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fea7a08 Linus Torvalds 22 August 2012, 20:29:06 UTC Linux 3.6-rc3 22 August 2012, 20:29:06 UTC
4ff63e4 Linus Torvalds 22 August 2012, 17:45:13 UTC Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux Pull drm fixes from Dave Airlie: "Intel: edid fixes, power consumption fix, s/r fix, haswell fix Radeon: BIOS loading fixes for UEFI and Thunderbolt machines, better MSAA validation, lockup timeout fixes, modesetting fixes One udl dpms fix, one vmwgfx fix, a couple of trivial core changes. There is an export added to ACPI as part of the radeon bios fixes. I've also included the fbcon flashing cursor vs deinit race fix, that seems the simplest place to start" Trivial conflict in drivers/video/console/fbcon.c due to me having already applied the fbcon flashing cursor vs deinit race fix, and Dave had added a comment in there too. * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits) fbcon: fix race condition between console lock and cursor timer (v1.1) drm: Add missing static storage class specifiers in drm_proc.c file drm/udl: dpms off the crtc when disabled. drm: Remove two unused fields from struct drm_display_mode drm: stop vmgfx driver explosion drm/radeon/ss: use num_crtc rather than hardcoded 6 Revert "drm/radeon: fix bo creation retry path" drm/i915: use hsw rps tuning values everywhere on gen6+ drm/radeon: split ATRM support out from the ATPX handler (v3) drm/radeon: convert radeon vfct code to use acpi_get_table_with_size ACPI: export symbol acpi_get_table_with_size drm/radeon: implement ACPI VFCT vbios fetch (v3) drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping drm/radeon: fix checking of MSAA renderbuffers on r600-r700 drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700 drm/radeon: init lockup timeout on ring init drm/radeon: avoid turning off spread spectrum for used pll drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads drm/i915: extract connector update from intel_ddc_get_modes() for reuse drm/i915: fix hsw uncached pte ... 22 August 2012, 17:45:13 UTC
0923699 Linus Torvalds 22 August 2012, 17:42:30 UTC Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target fixes from Nicholas Bellinger: "The executive summary includes: - Post-merge review comments for tcm_vhost (MST + nab) - Avoid debugging overhead when not debugging for tcm-fc(FCoE) (MDR) - Fix NULL pointer dereference bug on alloc_page failulre (Yi Zou) - Fix REPORT_LUNs regression bug with pSCSI export (AlexE + nab) - Fix regression bug with handling of zero-length data CDBs (nab) - Fix vhost_scsi_target structure alignment (MST) Thanks again to everyone who contributed a bugfix patch, gave review feedback on tcm_vhost code, and/or reported a bug during their own testing over the last weeks. There is one other outstanding bug reported by Roland recently related to SCSI transfer length overflow handling, for which the current proposed bugfix has been left in queue pending further testing with other non iscsi-target based fabric drivers. As the patch is verified with loopback (local SGL memory from SCSI LLD) + tcm_qla2xxx (TCM allocated SGL memory mapped to PCI HW) fabric ports, it will be included into the next 3.6-rc-fixes PULL request." * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target: Remove unused se_cmd.cmd_spdtl tcm_fc: rcu_deref outside rcu lock/unlock section tcm_vhost: Fix vhost_scsi_target structure alignment target: Fix regression bug with handling of zero-length data CDBs target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough tcm_vhost: Change vhost_scsi_target->vhost_wwpn to char * target: fix NULL pointer dereference bug alloc_page() fails to get memory tcm_fc: Avoid debug overhead when not debugging tcm_vhost: Post-merge review changes requested by MST tcm_vhost: Fix incorrect IS_ERR() usage in vhost_scsi_map_iov_to_sgl 22 August 2012, 17:42:30 UTC
2e2d8c9 Linus Torvalds 22 August 2012, 17:41:36 UTC Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux Pull i2c-embedded fixes from Wolfram Sang: "Some bugfixes for the "embedded" part of the I2C subsystem. The fixes affect mostly drivers which have been largely reworked lately and where regressions appeared." * 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux: i2c: tegra: protect suspend/resume callbacks with CONFIG_PM_SLEEP i2c: diolan-u2c: Fix master_xfer return code I2C: OMAP: xfer: fix runtime PM get/put balance on error i2c: nomadik: Add default configuration into the Nomadik I2C driver 22 August 2012, 17:41:36 UTC
fec3c03 Linus Torvalds 22 August 2012, 17:27:12 UTC Merge tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm Pull pwm fixes from Thierry Reding: "These patches fix the Samsung PWM driver and perform some minor cleanups like fixing checkpatch and sparse warnings. Two redundant error messages are removed and the Kconfig help text for the PWM subsystem is made more descriptive." * tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm: pwm: Improve Kconfig help text pwm: core: Fix coding style issues pwm: vt8500: Fix coding style issue pwm: Remove a redundant error message when devm_request_and_ioremap fails pwm: samsung: add missing device pointer to struct pwm_chip pwm: Add missing static storage class specifiers in core.c file 22 August 2012, 17:27:12 UTC
f753c4e Linus Torvalds 22 August 2012, 16:58:05 UTC Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull ceph fixes from Sage Weil: "Jim's fix closes a narrow race introduced with the msgr changes. One fix resolves problems with debugfs initialization that Yan found when multiple client instances are created (e.g., two clusters mounted, or rbd + cephfs), another one fixes problems with mounting a nonexistent server subdirectory, and the last one fixes a divide by zero error from unsanitized ioctl input that Dan Carpenter found." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: avoid divide by zero in __validate_layout() libceph: avoid truncation due to racing banners ceph: tolerate (and warn on) extraneous dentry from mds libceph: delay debugfs initialization until we learn global_id 22 August 2012, 16:58:05 UTC
ad746be Linus Torvalds 22 August 2012, 16:57:25 UTC Merge tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs Pull NFS client bugfixes from Trond Myklebust: - NFSv3 mounts need to fail if the FSINFO rpc call fails - Ensure that the NFS commit cache gets torn down when we unload the NFS module. - Fix memory scribble issues when interrupting a LAYOUTGET rpc call - Fix NFSv4 legacy idmapper regressions - Fix issues with the NFSv4 getacl command - Fix a regression when using the legacy "mount -t nfs4" * tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv3: Ensure that do_proc_get_root() reports errors correctly NFSv4: Ensure that nfs4_alloc_client cleans up on error. NFS: return -ENOKEY when the upcall fails to map the name NFS: Clear key construction data if the idmap upcall fails NFSv4: Don't use private xdr_stream fields in decode_getacl NFSv4: Fix the acl cache size calculation NFSv4: Fix pointer arithmetic in decode_getacl NFS: Alias the nfs module to nfs4 NFS: Fix a regression when loading the NFS v4 module NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done pnfs-obj: Better IO pattern in case of unaligned offset NFS41: add pg_layout_private to nfs_pageio_descriptor pnfs: nfs4_proc_layoutget returns void pnfs: defer release of pages in layoutget nfs: tear down caches in nfs_init_writepagecache when allocation fails 22 August 2012, 16:57:25 UTC
467e9e5 Linus Torvalds 22 August 2012, 16:56:06 UTC Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull assorted fixes - mostly vfs - from Al Viro: "Assorted fixes, with an unexpected detour into vfio refcounting logics (fell out when digging in an analog of eventpoll race in there)." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: task_work: add a scheduling point in task_work_run() fs: fix fs/namei.c kernel-doc warnings eventpoll: use-after-possible-free in epoll_create1() vfio: grab vfio_device reference *before* exposing the sucker via fd_install() vfio: get rid of vfio_device_put()/vfio_group_get_device* races vfio: get rid of open-coding kref_put_mutex introduce kref_put_mutex() vfio: don't dereference after kfree... mqueue: lift mnt_want_write() outside ->i_mutex, clean up a bit 22 August 2012, 16:56:06 UTC
88ec278 Eric Dumazet 21 August 2012, 13:05:14 UTC task_work: add a scheduling point in task_work_run() It seems commit 4a9d4b02 (switch fput to task_work_add) reintroduced the problem addressed in commit 944be0b2 (close_files(): add scheduling point) If a server process with a lot of files (say 2 million tcp sockets) is killed, we can spend a lot of time in task_work_run() and trigger a soft lockup. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:31:05 UTC
5585263 Randy Dunlap 19 August 2012, 00:39:25 UTC fs: fix fs/namei.c kernel-doc warnings Fix kernel-doc warnings in fs/namei.c: Warning(fs/namei.c:360): No description found for parameter 'inode' Warning(fs/namei.c:672): No description found for parameter 'nd' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:30:10 UTC
9802274 Al Viro 18 August 2012, 02:42:36 UTC eventpoll: use-after-possible-free in epoll_create1() As soon as we'd installed the file into descriptor table, it can get closed by another thread. Freeing ep in process... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:26:55 UTC
31605de Al Viro 18 August 2012, 01:32:56 UTC vfio: grab vfio_device reference *before* exposing the sucker via fd_install() It's not critical (anymore) since another thread closing the file will block on ->device_lock before it gets to dropping the final reference, but it's definitely cleaner that way... Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:26:42 UTC
90b1253 Al Viro 18 August 2012, 01:29:06 UTC vfio: get rid of vfio_device_put()/vfio_group_get_device* races we really need to make sure that dropping the last reference happens under the group->device_lock; otherwise a loop (under device_lock) might find vfio_device instance that is being freed right now, has already dropped the last reference and waits on device_lock to exclude the sucker from the list. Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:26:13 UTC
6d2cd3c Al Viro 18 August 2012, 01:27:32 UTC vfio: get rid of open-coding kref_put_mutex Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:25:19 UTC
8ad5db8 Al Viro 18 August 2012, 00:10:46 UTC introduce kref_put_mutex() equivalent of mutex_lock(mutex); if (!kref_put(kref, release)) mutex_unlock(mutex); Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:24:41 UTC
934ad4c Al Viro 17 August 2012, 23:49:09 UTC vfio: don't dereference after kfree... Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 22 August 2012, 14:23:04 UTC
d8636a2 Dave Airlie 21 August 2012, 06:29:47 UTC fbcon: fix race condition between console lock and cursor timer (v1.1) So we've had a fair few reports of fbcon handover breakage between efi/vesafb and i915 surface recently, so I dedicated a couple of days to finding the problem. Essentially the last thing we saw was the conflicting framebuffer message and that was all. So after much tracing with direct netconsole writes (printks under console_lock not so useful), I think I found the race. Thread A (driver load) Thread B (timer thread) unbind_con_driver -> | bind_con_driver -> | vc->vc_sw->con_deinit -> | fbcon_deinit -> | console_lock() | | | | fbcon_flashcursor timer fires | console_lock() <- blocked for A | | fbcon_del_cursor_timer -> del_timer_sync (BOOM) Of course because all of this is under the console lock, we never see anything, also since we also just unbound the active console guess what we never see anything. Hopefully this fixes the problem for anyone seeing vesafb->kms driver handoff. v1.1: add comment suggestion from Alan. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com> 22 August 2012, 04:00:35 UTC
23dcfa6 Linus Torvalds 22 August 2012, 00:22:22 UTC Merge branch 'akpm' (Andrew's patch-bomb) Merge fixes from Andrew Morton. Random drivers and some VM fixes. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (17 commits) mm: compaction: Abort async compaction if locks are contended or taking too long mm: have order > 0 compaction start near a pageblock with free pages rapidio/tsi721: fix unused variable compiler warning rapidio/tsi721: fix inbound doorbell interrupt handling drivers/rtc/rtc-rs5c348.c: fix hour decoding in 12-hour mode mm: correct page->pfmemalloc to fix deactivate_slab regression drivers/rtc/rtc-pcf2123.c: initialize dynamic sysfs attributes mm/compaction.c: fix deferring compaction mistake drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources string: do not export memweight() to userspace hugetlb: update hugetlbpage.txt checkpatch: add control statement test to SINGLE_STATEMENT_DO_WHILE_MACRO mm: hugetlbfs: correctly populate shared pmd cciss: fix incorrect scsi status reporting Documentation: update mount option in filesystem/vfat.txt mm: change nr_ptes BUG_ON to WARN_ON cs5535-clockevt: typo, it's MFGPT, not MFPGT 22 August 2012, 00:22:22 UTC
a484147 Linus Torvalds 21 August 2012, 23:54:38 UTC Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: "For bug fixes, at soc_camera, si470x, uvcvideo, iguanaworks IR driver, radio_shark Kbuild fixes, and at the V4L2 core (radio fixes)." * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] media: soc_camera: don't clear pix->sizeimage in JPEG mode [media] media: mx2_camera: Fix clock handling for i.MX27 [media] video: mx2_camera: Use clk_prepare_enable/clk_disable_unprepare [media] video: mx1_camera: Use clk_prepare_enable/clk_disable_unprepare [media] media: mx3_camera: buf_init() add buffer state check [media] radio-shark2: Only compile led support when CONFIG_LED_CLASS is set [media] radio-shark: Only compile led support when CONFIG_LED_CLASS is set [media] radio-shark*: Call cancel_work_sync from disconnect rather then release [media] radio-shark*: Remove work-around for dangling pointer in usb intfdata [media] Add USB dependency for IguanaWorks USB IR Transceiver [media] Add missing logging for rangelow/high of hwseek [media] VIDIOC_ENUM_FREQ_BANDS fix [media] mem2mem_testdev: fix querycap regression [media] si470x: v4l2-compliance fixes [media] DocBook: Remove a spurious character [media] uvcvideo: Reset the bytesused field when recycling an erroneous buffer 21 August 2012, 23:54:38 UTC
8f8ba75 Linus Torvalds 21 August 2012, 23:46:08 UTC Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net Pull networking update from David Miller: "A couple weeks of bug fixing in there. The largest chunk is all the broken crap Amerigo Wang found in the netpoll layer." 1) netpoll and it's users has several serious bugs: a) uses GFP_KERNEL with locks held b) interfaces requiring interrupts disabled are called with them enabled c) and vice versa d) VLAN tag demuxing, as per all other RX packet input paths, is not applied All from Amerigo Wang. 2) Hopefully cure the ipv4 mapped ipv6 address TCP early demux bugs for good, from Neal Cardwell. 3) Unlike AF_UNIX, AF_PACKET sockets don't set a default credentials when the user doesn't specify one explicitly during sendmsg(). Instead we attach an empty (zero) SCM credential block which is definitely not what we want. Fix from Eric Dumazet. 4) IPv6 illegally invokes netdevice notifiers with RCU lock held, fix from Ben Hutchings. 5) inet_csk_route_child_sock() checks wrong inet options pointer, fix from Christoph Paasch. 6) When AF_PACKET is used for transmit, packet loopback doesn't behave properly when a socket fanout is enabled, from Eric Leblond. 7) On bluetooth l2cap channel create failure, we leak the socket, from Jaganath Kanakkassery. 8) Fix all the netprio file handling bugs found by Al Viro, from John Fastabend. 9) Several error return and NULL deref bug fixes in networking drivers from Julia Lawall. 10) A large smattering of struct padding et al. kernel memory leaks to userspace found of Mathias Krause. 11) Conntrack expections in netfilter can access an uninitialized timer, fix from Pablo Neira Ayuso. 12) Several netfilter SIP tracker bug fixes from Patrick McHardy. 13) IPSEC ipv6 routes are not initialized correctly all the time, resulting in an OOPS in inet_putpeer(). Also from Patrick McHardy. 14) Bridging does rcu_dereference() outside of RCU protected area, from Stephen Hemminger. 15) Fix routing cache removal performance regression when looking up output routes that have a local destination. From Zheng Yan. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits) af_netlink: force credentials passing [CVE-2012-3520] ipv4: fix ip header ident selection in __ip_make_skb() ipv4: Use newinet->inet_opt in inet_csk_route_child_sock() tcp: fix possible socket refcount problem net: tcp: move sk_rx_dst_set call after tcp_create_openreq_child() net/core/dev.c: fix kernel-doc warning netconsole: remove a redundant netconsole_target_put() net: ipv6: fix oops in inet_putpeer() net/stmmac: fix issue of clk_get for Loongson1B. caif: Do not dereference NULL in chnl_recv_cb() af_packet: don't emit packet on orig fanout group drivers/net/irda: fix error return code drivers/net/wan/dscc4.c: fix error return code drivers/net/wimax/i2400m/fw.c: fix error return code smsc75xx: add missing entry to MAINTAINERS net: qmi_wwan: new devices: UML290 and K5006-Z net: sh_eth: Add eth support for R8A7779 device netdev/phy: skip disabled mdio-mux nodes dt: introduce for_each_available_child_of_node, of_get_next_available_child net: netprio: fix cgrp create and write priomap race ... 21 August 2012, 23:46:08 UTC
c67fe37 Mel Gorman 21 August 2012, 23:16:17 UTC mm: compaction: Abort async compaction if locks are contended or taking too long Jim Schutt reported a problem that pointed at compaction contending heavily on locks. The workload is straight-forward and in his own words; The systems in question have 24 SAS drives spread across 3 HBAs, running 24 Ceph OSD instances, one per drive. FWIW these servers are dual-socket Intel 5675 Xeons w/48 GB memory. I've got ~160 Ceph Linux clients doing dd simultaneously to a Ceph file system backed by 12 of these servers. Early in the test everything looks fine procs -------------------memory------------------ ---swap-- -----io---- --system-- -----cpu------- r b swpd free buff cache si so bi bo in cs us sy id wa st 31 15 0 287216 576 38606628 0 0 2 1158 2 14 1 3 95 0 0 27 15 0 225288 576 38583384 0 0 18 2222016 203357 134876 11 56 17 15 0 28 17 0 219256 576 38544736 0 0 11 2305932 203141 146296 11 49 23 17 0 6 18 0 215596 576 38552872 0 0 7 2363207 215264 166502 12 45 22 20 0 22 18 0 226984 576 38596404 0 0 3 2445741 223114 179527 12 43 23 22 0 and then it goes to pot procs -------------------memory------------------ ---swap-- -----io---- --system-- -----cpu------- r b swpd free buff cache si so bi bo in cs us sy id wa st 163 8 0 464308 576 36791368 0 0 11 22210 866 536 3 13 79 4 0 207 14 0 917752 576 36181928 0 0 712 1345376 134598 47367 7 90 1 2 0 123 12 0 685516 576 36296148 0 0 429 1386615 158494 60077 8 84 5 3 0 123 12 0 598572 576 36333728 0 0 1107 1233281 147542 62351 7 84 5 4 0 622 7 0 660768 576 36118264 0 0 557 1345548 151394 59353 7 85 4 3 0 223 11 0 283960 576 36463868 0 0 46 1107160 121846 33006 6 93 1 1 0 Note that system CPU usage is very high blocks being written out has dropped by 42%. He analysed this with perf and found perf record -g -a sleep 10 perf report --sort symbol --call-graph fractal,5 34.63% [k] _raw_spin_lock_irqsave | |--97.30%-- isolate_freepages | compaction_alloc | unmap_and_move | migrate_pages | compact_zone | compact_zone_order | try_to_compact_pages | __alloc_pages_direct_compact | __alloc_pages_slowpath | __alloc_pages_nodemask | alloc_pages_vma | do_huge_pmd_anonymous_page | handle_mm_fault | do_page_fault | page_fault | | | |--87.39%-- skb_copy_datagram_iovec | | tcp_recvmsg | | inet_recvmsg | | sock_recvmsg | | sys_recvfrom | | system_call | | __recv | | | | | --100.00%-- (nil) | | | --12.61%-- memcpy --2.70%-- [...] There was other data but primarily it is all showing that compaction is contended heavily on the zone->lock and zone->lru_lock. commit [b2eef8c0: mm: compaction: minimise the time IRQs are disabled while isolating pages for migration] noted that it was possible for migration to hold the lru_lock for an excessive amount of time. Very broadly speaking this patch expands the concept. This patch introduces compact_checklock_irqsave() to check if a lock is contended or the process needs to be scheduled. If either condition is true then async compaction is aborted and the caller is informed. The page allocator will fail a THP allocation if compaction failed due to contention. This patch also introduces compact_trylock_irqsave() which will acquire the lock only if it is not contended and the process does not need to schedule. Reported-by: Jim Schutt <jaschut@sandia.gov> Tested-by: Jim Schutt <jaschut@sandia.gov> Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
de74f1c Mel Gorman 21 August 2012, 23:16:15 UTC mm: have order > 0 compaction start near a pageblock with free pages Commit 7db8889ab05b ("mm: have order > 0 compaction start off where it left") introduced a caching mechanism to reduce the amount work the free page scanner does in compaction. However, it has a problem. Consider two process simultaneously scanning free pages C Process A M S F |---------------------------------------| Process B M FS C is zone->compact_cached_free_pfn S is cc->start_pfree_pfn M is cc->migrate_pfn F is cc->free_pfn In this diagram, Process A has just reached its migrate scanner, wrapped around and updated compact_cached_free_pfn accordingly. Simultaneously, Process B finishes isolating in a block and updates compact_cached_free_pfn again to the location of its free scanner. Process A moves to "end_of_zone - one_pageblock" and runs this check if (cc->order > 0 && (!cc->wrapped || zone->compact_cached_free_pfn > cc->start_free_pfn)) pfn = min(pfn, zone->compact_cached_free_pfn); compact_cached_free_pfn is above where it started so the free scanner skips almost the entire space it should have scanned. When there are multiple processes compacting it can end in a situation where the entire zone is not being scanned at all. Further, it is possible for two processes to ping-pong update to compact_cached_free_pfn which is just random. Overall, the end result wrecks allocation success rates. There is not an obvious way around this problem without introducing new locking and state so this patch takes a different approach. First, it gets rid of the skip logic because it's not clear that it matters if two free scanners happen to be in the same block but with racing updates it's too easy for it to skip over blocks it should not. Second, it updates compact_cached_free_pfn in a more limited set of circumstances. If a scanner has wrapped, it updates compact_cached_free_pfn to the end of the zone. When a wrapped scanner isolates a page, it updates compact_cached_free_pfn to point to the highest pageblock it can isolate pages from. If a scanner has not wrapped when it has finished isolated pages it checks if compact_cached_free_pfn is pointing to the end of the zone. If so, the value is updated to point to the highest pageblock that pages were isolated from. This value will not be updated again until a free page scanner wraps and resets compact_cached_free_pfn. This is not optimal and it can still race but the compact_cached_free_pfn will be pointing to or very near a pageblock with free pages. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
9a9a9a7 Alexandre Bounine 21 August 2012, 23:16:12 UTC rapidio/tsi721: fix unused variable compiler warning Fix unused variable compiler warning when built with CONFIG_RAPIDIO_DEBUG option off. This patch is applicable to kernel versions starting from v3.2 Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
3670e7e Alexandre Bounine 21 August 2012, 23:16:11 UTC rapidio/tsi721: fix inbound doorbell interrupt handling Make sure that there is no doorbell messages left behind due to disabled interrupts during inbound doorbell processing. The most common case for this bug is loss of rionet JOIN messages in systems with three or more rionet participants and MSI or MSI-X enabled. As result, requests for packet transfers may finish with "destination unreachable" error message. This patch is applicable to kernel versions starting from v3.2. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
7dbfb31 Atsushi Nemoto 21 August 2012, 23:16:10 UTC drivers/rtc/rtc-rs5c348.c: fix hour decoding in 12-hour mode Correct the offset by subtracting 20 from tm_hour before taking the modulo 12. [ "Why 20?" I hear you ask. Or at least I did. Here's the reason why: RS5C348_BIT_PM is 32, and is - stupidly - included in the RS5C348_HOURS_MASK define. So it's really subtracting out that bit to get "hour+12". But then because it does things modulo 12, it needs to add the 12 in again afterwards anyway. This code is confused. It would be much clearer if RS5C348_HOURS_MASK just didn't include the RS5C348_BIT_PM bit at all, then it wouldn't need to do the silly subtract either. Whatever. It's all just math, the end result is the same. - Linus ] Reported-by: James Nute <newten82@gmail.com> Tested-by: James Nute <newten82@gmail.com> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
b121186 Alex Shi 21 August 2012, 23:16:08 UTC mm: correct page->pfmemalloc to fix deactivate_slab regression Commit cfd19c5a9ecf ("mm: only set page->pfmemalloc when ALLOC_NO_WATERMARKS was used") tried to narrow down page->pfmemalloc setting, but it missed some places the pfmemalloc should be set. So, in __slab_alloc, the unalignment pfmemalloc and ALLOC_NO_WATERMARKS cause incorrect deactivate_slab() on our core2 server: 64.73% fio [kernel.kallsyms] [k] _raw_spin_lock | --- _raw_spin_lock | |---0.34%-- deactivate_slab | __slab_alloc | kmem_cache_alloc | | That causes our fio sync write performance to have a 40% regression. Move the checking in get_page_from_freelist() which resolves this issue. Signed-off-by: Alex Shi <alex.shi@intel.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: David Miller <davem@davemloft.net Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Sage Weil <sage@inktank.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
5ed12f1 Ilya Shchepetkov 21 August 2012, 23:16:06 UTC drivers/rtc/rtc-pcf2123.c: initialize dynamic sysfs attributes Dynamically allocated sysfs attributes must be initialized using sysfs_attr_init(), otherwise lockdep complains: BUG: key <address> not in .data! Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Ilya Shchepetkov <shchepetkov@ispras.ru> Cc: Chris Verges <chrisv@cyberswitching.com> Cc: Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
c81758f Minchan Kim 21 August 2012, 23:16:03 UTC mm/compaction.c: fix deferring compaction mistake Commit aff622495c9a ("vmscan: only defer compaction for failed order and higher") fixed bad deferring policy but made mistake about checking compact_order_failed in __compact_pgdat(). So it can't update compact_order_failed with the new order. This ends up preventing correct operation of policy deferral. This patch fixes it. Signed-off-by: Minchan Kim <minchan@kernel.org> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
7838f99 Robin Holt 21 August 2012, 23:16:02 UTC drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources On many of our larger systems, CPU 0 has had all of its IRQ resources consumed before XPC loads. Worst cases on machines with multiple 10 GigE cards and multiple IB cards have depleted the entire first socket of IRQs. This patch makes selecting the node upon which IRQs are allocated (as well as all the other GRU Message Queue structures) specifiable as a module load param and has a default behavior of searching all nodes/cpus for an available resources. [akpm@linux-foundation.org: fix build: include cpu.h and module.h] Signed-off-by: Robin Holt <holt@sgi.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
c3a5ce0 WANG Cong 21 August 2012, 23:16:00 UTC string: do not export memweight() to userspace Fix the following warning: usr/include/linux/string.h:8: userspace cannot reference function or variable defined in the kernel Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Acked-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
d46f3d8 Zhouping Liu 21 August 2012, 23:15:57 UTC hugetlb: update hugetlbpage.txt Commit f0f57b2b1488 ("mm: move hugepage test examples to tools/testing/selftests/vm") moved map_hugetlb.c, hugepage-shm.c and hugepage-mmap.c tests into tools/testing/selftests/vm/ directory, but it didn't update hugetlbpage.txt Signed-off-by: Zhouping Liu <sanweidaying@gmail.com> Acked-by: Dave Young <dyoung@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:03 UTC
ac8e97f Joe Perches 21 August 2012, 23:15:53 UTC checkpatch: add control statement test to SINGLE_STATEMENT_DO_WHILE_MACRO Commit b13edf7ff2dd ("checkpatch: add checks for do {} while (0) macro misuses") added a test that is overly simplistic for single statement macros. Macros that start with control tests should be enclosed in a do {} while (0) loop. Add the necessary control tests to the check. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Andy Whitcroft <apw@canonical.com> Tested-by: Franz Schrober <franzschrober@yahoo.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:02 UTC
eb48c07 Michal Hocko 21 August 2012, 23:15:52 UTC mm: hugetlbfs: correctly populate shared pmd Each page mapped in a process's address space must be correctly accounted for in _mapcount. Normally the rules for this are straightforward but hugetlbfs page table sharing is different. The page table pages at the PMD level are reference counted while the mapcount remains the same. If this accounting is wrong, it causes bugs like this one reported by Larry Woodman: kernel BUG at mm/filemap.c:135! invalid opcode: 0000 [#1] SMP CPU 22 Modules linked in: bridge stp llc sunrpc binfmt_misc dcdbas microcode pcspkr acpi_pad acpi] Pid: 18001, comm: mpitest Tainted: G W 3.3.0+ #4 Dell Inc. PowerEdge R620/07NDJ2 RIP: 0010:[<ffffffff8112cfed>] [<ffffffff8112cfed>] __delete_from_page_cache+0x15d/0x170 Process mpitest (pid: 18001, threadinfo ffff880428972000, task ffff880428b5cc20) Call Trace: delete_from_page_cache+0x40/0x80 truncate_hugepages+0x115/0x1f0 hugetlbfs_evict_inode+0x18/0x30 evict+0x9f/0x1b0 iput_final+0xe3/0x1e0 iput+0x3e/0x50 d_kill+0xf8/0x110 dput+0xe2/0x1b0 __fput+0x162/0x240 During fork(), copy_hugetlb_page_range() detects if huge_pte_alloc() shared page tables with the check dst_pte == src_pte. The logic is if the PMD page is the same, they must be shared. This assumes that the sharing is between the parent and child. However, if the sharing is with a different process entirely then this check fails as in this diagram: parent | ------------>pmd src_pte----------> data page ^ other--------->pmd--------------------| ^ child-----------| dst_pte For this situation to occur, it must be possible for Parent and Other to have faulted and failed to share page tables with each other. This is possible due to the following style of race. PROC A PROC B copy_hugetlb_page_range copy_hugetlb_page_range src_pte == huge_pte_offset src_pte == huge_pte_offset !src_pte so no sharing !src_pte so no sharing (time passes) hugetlb_fault hugetlb_fault huge_pte_alloc huge_pte_alloc huge_pmd_share huge_pmd_share LOCK(i_mmap_mutex) find nothing, no sharing UNLOCK(i_mmap_mutex) LOCK(i_mmap_mutex) find nothing, no sharing UNLOCK(i_mmap_mutex) pmd_alloc pmd_alloc LOCK(instantiation_mutex) fault UNLOCK(instantiation_mutex) LOCK(instantiation_mutex) fault UNLOCK(instantiation_mutex) These two processes are not poing to the same data page but are not sharing page tables because the opportunity was missed. When either process later forks, the src_pte == dst pte is potentially insufficient. As the check falls through, the wrong PTE information is copied in (harmless but wrong) and the mapcount is bumped for a page mapped by a shared page table leading to the BUG_ON. This patch addresses the issue by moving pmd_alloc into huge_pmd_share which guarantees that the shared pud is populated in the same critical section as pmd. This also means that huge_pte_offset test in huge_pmd_share is serialized correctly now which in turn means that the success of the sharing will be higher as the racing tasks see the pud and pmd populated together. Race identified and changelog written mostly by Mel Gorman. {akpm@linux-foundation.org: attempt to make the huge_pmd_share() comment comprehensible, clean up coding style] Reported-by: Larry Woodman <lwoodman@redhat.com> Tested-by: Larry Woodman <lwoodman@redhat.com> Reviewed-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Ken Chen <kenchen@google.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:02 UTC
b0cf0b1 Stephen M. Cameron 21 August 2012, 23:15:49 UTC cciss: fix incorrect scsi status reporting Delete code which sets SCSI status incorrectly as it's already been set correctly above this incorrect code. The bug was introduced in 2009 by commit b0e15f6db111 ("cciss: fix typo that causes scsi status to be lost.") Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by: Roel van Meer <roel.vanmeer@bokxing.nl> Tested-by: Roel van Meer <roel.vanmeer@bokxing.nl> Cc: Jens Axboe <axboe@kernel.dk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:02 UTC
d65226e Namjae Jeon 21 August 2012, 23:15:46 UTC Documentation: update mount option in filesystem/vfat.txt Update two mount options(discard, nfs) in vfat.txt. Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:02 UTC
f9aed62 Hugh Dickins 21 August 2012, 23:15:45 UTC mm: change nr_ptes BUG_ON to WARN_ON Occasionally an isolated BUG_ON(mm->nr_ptes) gets reported, indicating that not all the page tables allocated could be found and freed when exit_mmap() tore down the user address space. There's usually nothing we can say about it, beyond that it's probably a sign of some bad memory or memory corruption; though it might still indicate a bug in vma or page table management (and did recently reveal a race in THP, fixed a few months ago). But one overdue change we can make is from BUG_ON to WARN_ON. It's fairly likely that the system will crash shortly afterwards in some other way (for example, the BUG_ON(page_mapped(page)) in __delete_from_page_cache(), once an inode mapped into the lost page tables gets evicted); but might tell us more before that. Change the BUG_ON(page_mapped) to WARN_ON too? Later perhaps: I'm less eager, since that one has several times led to fixes. Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:02 UTC
61e01be Jens Rottmann 21 August 2012, 23:15:43 UTC cs5535-clockevt: typo, it's MFGPT, not MFPGT Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 23:45:02 UTC
27fc4f1 Sachin Kamat 01 August 2012, 11:45:30 UTC drm: Add missing static storage class specifiers in drm_proc.c file Fixes the following sparse warning: drivers/gpu/drm/drm_proc.c:92:5: warning: symbol 'drm_proc_create_files' was not declared. Should it be static? drivers/gpu/drm/drm_proc.c:175:5: warning: symbol 'drm_proc_remove_files' was not declared. Should it be static? Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Dave Airlie <airlied@redhat.com> 21 August 2012, 23:30:00 UTC
d5c2c20 Dave Airlie 17 August 2012, 02:55:48 UTC drm/udl: dpms off the crtc when disabled. This turns off the crtc when its been disabled, fixes it not turning off properly the whole time. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> 21 August 2012, 23:27:47 UTC
04ccfe7 Damien Lespiau 17 August 2012, 14:20:02 UTC drm: Remove two unused fields from struct drm_display_mode Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com> 21 August 2012, 23:27:27 UTC
f5869a8 Alan Cox 20 August 2012, 14:44:52 UTC drm: stop vmgfx driver explosion If you do a page flip with no flags set then event is NULL. If event is NULL then the vmw_gfx driver likes to go digging into NULL and extracts NULL->base.file_priv. On a modern kernel with NULL mapping protection it's just another oops, without it there are some "intriguing" possibilities. What it should do is an open question but that for the driver owners to sort out. Signed-off-by: Alan Cox <alan@linux.intel.com> Reviewed-by: Jakob Bornecrantz <jakob@vmware.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com> 21 August 2012, 23:26:50 UTC
85119c1 Dave Airlie 21 August 2012, 23:19:40 UTC Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes Daniel writes: " Nothing too major: - A few fixes around the edid handling from Jani, also fixing a regression in 3.5 due to us using gmbus by default. - Fixup hsw uncached pte flags. - Fix suspend/resume crash when using hw contexts, from Ben. - Try to tune gpu turbo a bit better, seems to help with some oddball power regressions." * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: use hsw rps tuning values everywhere on gen6+ drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads drm/i915: extract connector update from intel_ddc_get_modes() for reuse drm/i915: fix hsw uncached pte drm/i915/contexts: fix list corruption drm/i915: fix EDID memory leak in SDVO 21 August 2012, 23:19:40 UTC
e2be2cd Dave Airlie 21 August 2012, 23:18:49 UTC Merge branch 'drm-fixes-3.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes Alex writes: "This is the current set of radeon fixes for 3.6. Nothing too major. Highlights: - fix vbios fetch on pure uefi systems - fix vbios fetch on thunderbolt systems - MSAA fixes - lockup timeout fix - modesetting fix" * 'drm-fixes-3.6' of git://people.freedesktop.org/~agd5f/linux: drm/radeon/ss: use num_crtc rather than hardcoded 6 Revert "drm/radeon: fix bo creation retry path" drm/radeon: split ATRM support out from the ATPX handler (v3) drm/radeon: convert radeon vfct code to use acpi_get_table_with_size ACPI: export symbol acpi_get_table_with_size drm/radeon: implement ACPI VFCT vbios fetch (v3) drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping drm/radeon: fix checking of MSAA renderbuffers on r600-r700 drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700 drm/radeon: init lockup timeout on ring init drm/radeon: avoid turning off spread spectrum for used pll 21 August 2012, 23:18:49 UTC
45f2e08 Sage Weil 21 August 2012, 19:11:51 UTC ceph: avoid divide by zero in __validate_layout() If "l->stripe_unit" is zero the the mod on the next line will cause a divide by zero bug. This comes from the copy_from_user() in ceph_ioctl_set_layout_policy(). Passing 0 is valid, though (it means "do not change") so avoid the % check in that case. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> 21 August 2012, 22:55:28 UTC
6d4221b Jim Schutt 10 August 2012, 17:37:38 UTC libceph: avoid truncation due to racing banners Because the Ceph client messenger uses a non-blocking connect, it is possible for the sending of the client banner to race with the arrival of the banner sent by the peer. When ceph_sock_state_change() notices the connect has completed, it schedules work to process the socket via con_work(). During this time the peer is writing its banner, and arrival of the peer banner races with con_work(). If con_work() calls try_read() before the peer banner arrives, there is nothing for it to do, after which con_work() calls try_write() to send the client's banner. In this case Ceph's protocol negotiation can complete succesfully. The server-side messenger immediately sends its banner and addresses after accepting a connect request, *before* actually attempting to read or verify the banner from the client. As a result, it is possible for the banner from the server to arrive before con_work() calls try_read(). If that happens, try_read() will read the banner and prepare protocol negotiation info via prepare_write_connect(). prepare_write_connect() calls con_out_kvec_reset(), which discards the as-yet-unsent client banner. Next, con_work() calls try_write(), which sends the protocol negotiation info rather than the banner that the peer is expecting. The result is that the peer sees an invalid banner, and the client reports "negotiation failed". Fix this by moving con_out_kvec_reset() out of prepare_write_connect() to its callers at all locations except the one where the banner might still need to be sent. [elder@inktak.com: added note about server-side behavior] Signed-off-by: Jim Schutt <jaschut@sandia.gov> Reviewed-by: Alex Elder <elder@inktank.com> 21 August 2012, 22:55:27 UTC
6c5e50f Sage Weil 21 August 2012, 22:55:25 UTC ceph: tolerate (and warn on) extraneous dentry from mds If the MDS gives us a dentry and we weren't prepared to handle it, WARN_ON_ONCE instead of crashing. Reported-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> 21 August 2012, 22:55:25 UTC
5317670 Alex Deucher 21 August 2012, 22:52:56 UTC drm/radeon/ss: use num_crtc rather than hardcoded 6 When checking if a pll is in use. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 21 August 2012, 22:52:56 UTC
e0e3cea Eric Dumazet 21 August 2012, 06:21:17 UTC af_netlink: force credentials passing [CVE-2012-3520] Pablo Neira Ayuso discovered that avahi and potentially NetworkManager accept spoofed Netlink messages because of a kernel bug. The kernel passes all-zero SCM_CREDENTIALS ancillary data to the receiver if the sender did not provide such data, instead of not including any such data at all or including the correct data from the peer (as it is the case with AF_UNIX). This bug was introduced in commit 16e572626961 (af_unix: dont send SCM_CREDENTIALS by default) This patch forces passing credentials for netlink, as before the regression. Another fix would be to not add SCM_CREDENTIALS in netlink messages if not provided by the sender, but it might break some programs. With help from Florian Weimer & Petr Matousek This issue is designated as CVE-2012-3520 Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Petr Matousek <pmatouse@redhat.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net> 21 August 2012, 21:53:01 UTC
a9915a1 Eric Dumazet 20 August 2012, 07:26:45 UTC ipv4: fix ip header ident selection in __ip_make_skb() Christian Casteyde reported a kmemcheck 32-bit read from uninitialized memory in __ip_select_ident(). It turns out that __ip_make_skb() called ip_select_ident() before properly initializing iph->daddr. This is a bug uncovered by commit 1d861aa4b3fb (inet: Minimize use of cached route inetpeer.) Addresses https://bugzilla.kernel.org/show_bug.cgi?id=46131 Reported-by: Christian Casteyde <casteyde.christian@free.fr> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net> 21 August 2012, 21:51:06 UTC
1a7b27c Christoph Paasch 20 August 2012, 02:52:09 UTC ipv4: Use newinet->inet_opt in inet_csk_route_child_sock() Since 0e734419923bd ("ipv4: Use inet_csk_route_child_sock() in DCCP and TCP."), inet_csk_route_child_sock() is called instead of inet_csk_route_req(). However, after creating the child-sock in tcp/dccp_v4_syn_recv_sock(), ireq->opt is set to NULL, before calling inet_csk_route_child_sock(). Thus, inside inet_csk_route_child_sock() opt is always NULL and the SRR-options are not respected anymore. Packets sent by the server won't have the correct destination-IP. This patch fixes it by accessing newinet->inet_opt instead of ireq->opt inside inet_csk_route_child_sock(). Reported-by: Luca Boccassi <luca.boccassi@gmail.com> Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net> 21 August 2012, 21:49:11 UTC
144d56e Eric Dumazet 20 August 2012, 00:22:46 UTC tcp: fix possible socket refcount problem Commit 6f458dfb40 (tcp: improve latencies of timer triggered events) added bug leading to following trace : [ 2866.131281] IPv4: Attempt to release TCP socket in state 1 ffff880019ec0000 [ 2866.131726] [ 2866.132188] ========================= [ 2866.132281] [ BUG: held lock freed! ] [ 2866.132281] 3.6.0-rc1+ #622 Not tainted [ 2866.132281] ------------------------- [ 2866.132281] kworker/0:1/652 is freeing memory ffff880019ec0000-ffff880019ec0a1f, with a lock still held there! [ 2866.132281] (sk_lock-AF_INET-RPC){+.+...}, at: [<ffffffff81903619>] tcp_sendmsg+0x29/0xcc6 [ 2866.132281] 4 locks held by kworker/0:1/652: [ 2866.132281] #0: (rpciod){.+.+.+}, at: [<ffffffff81083567>] process_one_work+0x1de/0x47f [ 2866.132281] #1: ((&task->u.tk_work)){+.+.+.}, at: [<ffffffff81083567>] process_one_work+0x1de/0x47f [ 2866.132281] #2: (sk_lock-AF_INET-RPC){+.+...}, at: [<ffffffff81903619>] tcp_sendmsg+0x29/0xcc6 [ 2866.132281] #3: (&icsk->icsk_retransmit_timer){+.-...}, at: [<ffffffff81078017>] run_timer_softirq+0x1ad/0x35f [ 2866.132281] [ 2866.132281] stack backtrace: [ 2866.132281] Pid: 652, comm: kworker/0:1 Not tainted 3.6.0-rc1+ #622 [ 2866.132281] Call Trace: [ 2866.132281] <IRQ> [<ffffffff810bc527>] debug_check_no_locks_freed+0x112/0x159 [ 2866.132281] [<ffffffff818a0839>] ? __sk_free+0xfd/0x114 [ 2866.132281] [<ffffffff811549fa>] kmem_cache_free+0x6b/0x13a [ 2866.132281] [<ffffffff818a0839>] __sk_free+0xfd/0x114 [ 2866.132281] [<ffffffff818a08c0>] sk_free+0x1c/0x1e [ 2866.132281] [<ffffffff81911e1c>] tcp_write_timer+0x51/0x56 [ 2866.132281] [<ffffffff81078082>] run_timer_softirq+0x218/0x35f [ 2866.132281] [<ffffffff81078017>] ? run_timer_softirq+0x1ad/0x35f [ 2866.132281] [<ffffffff810f5831>] ? rb_commit+0x58/0x85 [ 2866.132281] [<ffffffff81911dcb>] ? tcp_write_timer_handler+0x148/0x148 [ 2866.132281] [<ffffffff81070bd6>] __do_softirq+0xcb/0x1f9 [ 2866.132281] [<ffffffff81a0a00c>] ? _raw_spin_unlock+0x29/0x2e [ 2866.132281] [<ffffffff81a1227c>] call_softirq+0x1c/0x30 [ 2866.132281] [<ffffffff81039f38>] do_softirq+0x4a/0xa6 [ 2866.132281] [<ffffffff81070f2b>] irq_exit+0x51/0xad [ 2866.132281] [<ffffffff81a129cd>] do_IRQ+0x9d/0xb4 [ 2866.132281] [<ffffffff81a0a3ef>] common_interrupt+0x6f/0x6f [ 2866.132281] <EOI> [<ffffffff8109d006>] ? sched_clock_cpu+0x58/0xd1 [ 2866.132281] [<ffffffff81a0a172>] ? _raw_spin_unlock_irqrestore+0x4c/0x56 [ 2866.132281] [<ffffffff81078692>] mod_timer+0x178/0x1a9 [ 2866.132281] [<ffffffff818a00aa>] sk_reset_timer+0x19/0x26 [ 2866.132281] [<ffffffff8190b2cc>] tcp_rearm_rto+0x99/0xa4 [ 2866.132281] [<ffffffff8190dfba>] tcp_event_new_data_sent+0x6e/0x70 [ 2866.132281] [<ffffffff8190f7ea>] tcp_write_xmit+0x7de/0x8e4 [ 2866.132281] [<ffffffff818a565d>] ? __alloc_skb+0xa0/0x1a1 [ 2866.132281] [<ffffffff8190f952>] __tcp_push_pending_frames+0x2e/0x8a [ 2866.132281] [<ffffffff81904122>] tcp_sendmsg+0xb32/0xcc6 [ 2866.132281] [<ffffffff819229c2>] inet_sendmsg+0xaa/0xd5 [ 2866.132281] [<ffffffff81922918>] ? inet_autobind+0x5f/0x5f [ 2866.132281] [<ffffffff810ee7f1>] ? trace_clock_local+0x9/0xb [ 2866.132281] [<ffffffff8189adab>] sock_sendmsg+0xa3/0xc4 [ 2866.132281] [<ffffffff810f5de6>] ? rb_reserve_next_event+0x26f/0x2d5 [ 2866.132281] [<ffffffff8103e6a9>] ? native_sched_clock+0x29/0x6f [ 2866.132281] [<ffffffff8103e6f8>] ? sched_clock+0x9/0xd [ 2866.132281] [<ffffffff810ee7f1>] ? trace_clock_local+0x9/0xb [ 2866.132281] [<ffffffff8189ae03>] kernel_sendmsg+0x37/0x43 [ 2866.132281] [<ffffffff8199ce49>] xs_send_kvec+0x77/0x80 [ 2866.132281] [<ffffffff8199cec1>] xs_sendpages+0x6f/0x1a0 [ 2866.132281] [<ffffffff8107826d>] ? try_to_del_timer_sync+0x55/0x61 [ 2866.132281] [<ffffffff8199d0d2>] xs_tcp_send_request+0x55/0xf1 [ 2866.132281] [<ffffffff8199bb90>] xprt_transmit+0x89/0x1db [ 2866.132281] [<ffffffff81999bcd>] ? call_connect+0x3c/0x3c [ 2866.132281] [<ffffffff81999d92>] call_transmit+0x1c5/0x20e [ 2866.132281] [<ffffffff819a0d55>] __rpc_execute+0x6f/0x225 [ 2866.132281] [<ffffffff81999bcd>] ? call_connect+0x3c/0x3c [ 2866.132281] [<ffffffff819a0f33>] rpc_async_schedule+0x28/0x34 [ 2866.132281] [<ffffffff810835d6>] process_one_work+0x24d/0x47f [ 2866.132281] [<ffffffff81083567>] ? process_one_work+0x1de/0x47f [ 2866.132281] [<ffffffff819a0f0b>] ? __rpc_execute+0x225/0x225 [ 2866.132281] [<ffffffff81083a6d>] worker_thread+0x236/0x317 [ 2866.132281] [<ffffffff81083837>] ? process_scheduled_works+0x2f/0x2f [ 2866.132281] [<ffffffff8108b7b8>] kthread+0x9a/0xa2 [ 2866.132281] [<ffffffff81a12184>] kernel_thread_helper+0x4/0x10 [ 2866.132281] [<ffffffff81a0a4b0>] ? retint_restore_args+0x13/0x13 [ 2866.132281] [<ffffffff8108b71e>] ? __init_kthread_worker+0x5a/0x5a [ 2866.132281] [<ffffffff81a12180>] ? gs_change+0x13/0x13 [ 2866.308506] IPv4: Attempt to release TCP socket in state 1 ffff880019ec0000 [ 2866.309689] ============================================================================= [ 2866.310254] BUG TCP (Not tainted): Object already free [ 2866.310254] ----------------------------------------------------------------------------- [ 2866.310254] The bug comes from the fact that timer set in sk_reset_timer() can run before we actually do the sock_hold(). socket refcount reaches zero and we free the socket too soon. timer handler is not allowed to reduce socket refcnt if socket is owned by the user, or we need to change sk_reset_timer() implementation. We should take a reference on the socket in case TCP_DELACK_TIMER_DEFERRED or TCP_DELACK_TIMER_DEFERRED bit are set in tsq_flags Also fix a typo in tcp_delack_timer(), where TCP_WRITE_TIMER_DEFERRED was used instead of TCP_DELACK_TIMER_DEFERRED. For consistency, use same socket refcount change for TCP_MTU_REDUCED_DEFERRED, even if not fired from a timer. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Tested-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 21 August 2012, 21:42:23 UTC
af74115 Roland Dreier 16 August 2012, 04:24:52 UTC target: Remove unused se_cmd.cmd_spdtl This was originally for helping fabrics to determine overflow/underflow status, and has been superceeded by SCF_OVERFLOW_BIT + SCF_UNDERFLOW_BIT. Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 21 August 2012, 21:27:35 UTC
1456c75 Linus Torvalds 21 August 2012, 19:25:24 UTC Merge branch 'audit-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull audit-tree fixes from Miklos Szeredi: "The audit subsystem maintainers (Al and Eric) are not responding to repeated resends. Eric did ack them a while ago, but no response since then. So I'm sending these directly to you." * 'audit-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: audit: clean up refcounting in audit-tree audit: fix refcounting in audit-tree audit: don't free_chunk() after fsnotify_add_mark() 21 August 2012, 19:25:24 UTC
a6b881a Linus Torvalds 21 August 2012, 17:08:39 UTC Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu Pull m68knommu arch fixes from Greg Ungerer: "This contains 2 fixes. One fixes compilation of ColdFire clk code, the other makes sure we use the generic atomic64 support on all m68k targets." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: select CONFIG_GENERIC_ATOMIC64 for all m68k CPU types m68knommu: select CONFIG_HAVE_CLK for ColdFire CPU types 21 August 2012, 17:08:39 UTC
8f6c1ca Linus Torvalds 21 August 2012, 17:07:41 UTC Merge tag 'pinctrl-fixes-v3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control fixes from Linus Walleij: - Fixed Nomadik errorpath - Fixed documentation spelling errors - Forward-declare struct device in a header file - Remove some extraneous code lines when getting pinctrl states - Correct the i.MX51 configure register number - Fix the Nomadik keypad function group list * tag 'pinctrl-fixes-v3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl/nomadik: add kp_b_2 keyboard function group list pinctrl: imx51: fix .conf_reg of MX51_PAD_SD2_CMD__CSPI_MOSI trivial: pinctrl core: remove extraneous code lines pinctrl: header: trivial: declare struct device Documentation/pinctrl.txt: Fix some misspelled macros pinctrl/nomadik: fix null in irqdomain errorpath 21 August 2012, 17:07:41 UTC
4459f39 Linus Torvalds 21 August 2012, 16:17:05 UTC Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This update became slightly bigger than usual for rc3, but most of the commits are small and trivial. A large chunk is found for HD-audio ca0132 codec, which is mostly a clean up of the specific code, to make SPDIF working properly, and also in the new ASoC Arizona driver. One important fix is for usb-audio Oops fix since 3.5. We still see some EHCI related bandwidth problem, but usb-audio should be more stabilized now. Other than that, a Kconfig fix is spread over files, and various HD-audio and ASoC fixes as usual, in addition to Julia's error path fixes." * tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (42 commits) ALSA: snd-als100: fix suspend/resume ALSA: hda - Fix leftover codec->power_transition ALSA: hda - don't create dysfunctional mixer controls for ca0132 ALSA: sound/ppc/snd_ps3.c: fix error return code ALSA: sound/pci/rme9652/hdspm.c: fix error return code ALSA: sound/pci/sis7019.c: fix error return code ALSA: sound/pci/ctxfi/ctatc.c: fix error return code ALSA: sound/atmel/ac97c.c: fix error return code ALSA: sound/atmel/abdac.c: fix error return code ALSA: fix pcm.h kernel-doc warning and notation sound: oss/sb_audio: prevent divide by zero bug ASoC: wm9712: Fix inverted capture volume ASoC: wm9712: Fix microphone source selection ASoC: wm5102: Remove DRC2 ALSA: hda - Don't send invalid volume knob command on IDT 92hd75bxx ALSA: usb-audio: Fix scheduling-while-atomic bug in PCM capture stream ALSA: lx6464es: Add a missing error check ALSA: hda - Fix 'Beep Playback Switch' with no underlying mute switch ASoC: jack: Always notify full jack status ASoC: wm5110: Add missing input PGA routes ... 21 August 2012, 16:17:05 UTC
f341861 Eric Dumazet 21 August 2012, 13:05:14 UTC task_work: add a scheduling point in task_work_run() It seems commit 4a9d4b024a31 ("switch fput to task_work_add") re- introduced the problem addressed in 944be0b22472 ("close_files(): add scheduling point") If a server process with a lot of files (say 2 million tcp sockets) is killed, we can spend a lot of time in task_work_run() and trigger a soft lockup. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 16:11:44 UTC
ec5da7f Dave Airlie 21 August 2012, 06:40:07 UTC fbcon: fix race condition between console lock and cursor timer So we've had a fair few reports of fbcon handover breakage between efi/vesafb and i915 surface recently, so I dedicated a couple of days to finding the problem. Essentially the last thing we saw was the conflicting framebuffer message and that was all. So after much tracing with direct netconsole writes (printks under console_lock not so useful), I think I found the race. Thread A (driver load) Thread B (timer thread) unbind_con_driver -> | bind_con_driver -> | vc->vc_sw->con_deinit -> | fbcon_deinit -> | console_lock() | | | | fbcon_flashcursor timer fires | console_lock() <- blocked for A | | fbcon_del_cursor_timer -> del_timer_sync (BOOM) Of course because all of this is under the console lock, we never see anything, also since we also just unbound the active console guess what we never see anything. Hopefully this fixes the problem for anyone seeing vesafb->kms driver handoff. Signed-off-by: David Airlie <airlied@redhat.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: stable@vger.kernel.org Tested-by: Josh Boyer <jwboyer@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 21 August 2012, 16:08:50 UTC
676bc2e Alex Deucher 21 August 2012, 13:55:01 UTC Revert "drm/radeon: fix bo creation retry path" This reverts commit d1c7871ddb1f588b8eb35affd9ee1a3d5e11cd0c. ttm_bo_init() destroys the BO on failure. So this patch makes the retry path work with freed memory. This ends up causing kernel panics when this path is hit. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 21 August 2012, 13:55:01 UTC
53e1719 Ondrej Zary 20 August 2012, 19:50:13 UTC ALSA: snd-als100: fix suspend/resume snd_card_als100_probe() does not set pcm field in struct snd_sb. As a result, PCM is not suspended and applications don't know that they need to resume the playback. Tested with Labway A381-F20 card (ALS120). Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> 21 August 2012, 05:29:40 UTC
9160338 Linus Torvalds 20 August 2012, 23:42:41 UTC Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "Here are two patches from Rafael Wysocki. One fixes an EHCI-related hibernation crash on ASUS boxes. We fixed a similar suspend issue in v3.6-rc1, and this applies the same fix to the hibernate path. The other fixes D3/D3cold/D4 messages related to the D3cold support we merged in v3.6-rc1." (Removed redundant top non-fast-forward merge commit from pulled branch) * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: EHCI: Fix crash during hibernation on ASUS computers PCI / PM: Fix D3/D3cold/D4 messages printed by acpi_pci_set_power_state() 20 August 2012, 23:42:41 UTC
3b31fe9 Linus Torvalds 20 August 2012, 22:26:28 UTC Merge tag 'please-pull-ia64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull config cleanup for ia64 from Tony Luck: "Clean out references to dead CONFIG_MISC_DEVICES option" * tag 'please-pull-ia64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: [IA64] defconfig: Remove CONFIG_MISC_DEVICES 20 August 2012, 22:26:28 UTC
08a1620 Denis Efremov 18 August 2012, 12:10:31 UTC tcm_fc: rcu_deref outside rcu lock/unlock section Use rcu_dereference_protected in order to prevent lockdep complaint. Sequel of the patch 863555be Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Denis Efremov <yefremov.denis@gmail.com> Acked-by: Mark D. Rustad <mark.d.rustad@intel.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 20 August 2012, 21:52:15 UTC
6de7145 Michael S. Tsirkin 18 August 2012, 22:44:09 UTC tcm_vhost: Fix vhost_scsi_target structure alignment Here TRANSPORT_IQN_LEN is 224, which is a multiple of 4. Since vhost_tpgt is 2 bytes and abi_version is 4, the total size would be 230. But gcc needs struct size be aligned to first field size, which is 4 bytes, so it pads the structure by extra 2 bytes to the total of 232. This padding is very undesirable in an ABI: - it can not be initialized easily - it can not be checked easily - it can leak information between kernel and userspace Simplest solution is probably just to make the padding explicit. (v2: Add check for zero'ed backend->reserved field for VHOST_SCSI_SET_ENDPOINT and VHOST_SCSI_CLEAR_ENDPOINT ops as requested by MST) Reported-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 20 August 2012, 21:52:11 UTC
10c63c9 Linus Torvalds 20 August 2012, 20:14:22 UTC Merge tag 'usb-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull more USB patches from Greg Kroah-Hartman: "Here are 10 more USB patches for 3.6-rc3. They all fix reported problems (build problems for one of them, and easily repeatable oopses for the others.) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'usb-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: gpu/mfd/usb: Fix USB randconfig problems USB: CDC ACM: Fix NULL pointer dereference USB: emi62: remove __devinit* from the struct usb_device_id table USB: winbond: remove __devinit* from the struct usb_device_id table USB: vt6656: remove __devinit* from the struct usb_device_id table USB: rtl8187: remove __devinit* from the struct usb_device_id table USB: p54usb: remove __devinit* from the struct usb_device_id table USB: spca506: remove __devinit* from the struct usb_device_id table USB: jl2005bcd: remove __devinit* from the struct usb_device_id table USB: smsusb: remove __devinit* from the struct usb_device_id table 20 August 2012, 20:14:22 UTC
c3e2f79 Linus Torvalds 20 August 2012, 20:13:47 UTC Merge tag 'driver-core-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull one more driver core fix from Greg Kroah-Hartman: "Here is one fix for the dmesg line corruption problem that the previous set of patches caused. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'driver-core-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: dyndbg: fix for SOH in logging messages 20 August 2012, 20:13:47 UTC
b0fbfb0 Linus Torvalds 20 August 2012, 20:12:41 UTC Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86 Pull x86 platform driver update from Matthew Garrett: "Some small updates for a few drivers, and some hardware enablement for new Ideapads and the gmux hardware in the latest Macs. This code won't run on older devices and has been well tested on new ones, so low risk of regressions." * 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: ideapad: add Lenovo IdeaPad Z570 support (part 3) ideapad: add Lenovo IdeaPad Z570 support (part 2) ideapad: add Lenovo IdeaPad Z570 support (part 1) classmate-laptop: always call input_sync() after input_report_switch() thinkpad-acpi: recognize latest V-Series using DMI_BIOS_VENDOR dell-laptop: Fixed typo in touchpad LED quirk vga_switcheroo: Don't require handler init callback vga_switcheroo: Remove assumptions about registration/unregistration ordering apple-gmux: Add display mux support apple-gmux: Fix kconfig dependencies asus-wmi: record wlan status while controlled by userapp apple_gmux: Fix ACPI video unregister apple_gmux: Add support for newer hardware gmux: Add generic write32 function 20 August 2012, 20:12:41 UTC
807b516 Linus Torvalds 20 August 2012, 20:11:00 UTC Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull a hwmon fix from Guenter Roeck: "One patch with section conflict fixes." * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: sections: Fix section conflicts in drivers/hwmon 20 August 2012, 20:11:00 UTC
8a6b521 Linus Torvalds 20 August 2012, 20:05:27 UTC Merge tag 'spi-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc Pull spi fixes from Mark Brown: "Grant is still away so another pull request with some fairly minor fixes, the most notable of which are several fixes for some common error patterns with the reference counting spi_master_get/put do." * tag 'spi-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: spi/coldfire-qspi: Drop extra calls to spi_master_get in suspend/resume functions spi: spi-coldfire-qspi: Drop extra spi_master_put in device remove function spi/pl022: fix spi-pl022 pm enable at probe spi/bcm63xx: Ensure that memory is freed only after it is no longer used spi: omap2-mcspi: Fix the error handling in probe spi/s3c64xx: Add missing static storage class specifiers 20 August 2012, 20:05:27 UTC
7c3ea48 Fabio Estevam 18 August 2012, 16:23:49 UTC [IA64] defconfig: Remove CONFIG_MISC_DEVICES commit 7c5763b845 (drivers:misc: Remove MISC_DEVICES config option) removed CONFIG_MISC_DEVICES option, so remove the occurrences from the config files as well. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Tony Luck <tony.luck@intel.com> 20 August 2012, 20:04:29 UTC
fd4d332 Linus Torvalds 20 August 2012, 19:59:51 UTC Merge tag 'regulator-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "A bunch of fixes which are a combination of minor fixes that have been shaken down due to greater testing exposure, the biggest block of which are for the Palmas driver which hadn't had all the changes required for mainline properly tested when it was merged." * tag 'regulator-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: twl-regulator: fix up VINTANA1/VINTANA2 regulator: core: request only valid gpio pins for regulator enable regulator: twl: Remove references to the twl4030 regulator regulator: gpio-regulator: Split setting of voltages and currents regulator: ab3100: add missing voltage table regulator: anatop: Fix wrong mask used in anatop_get_voltage_sel regulator: tps6586x: correct vin pin for sm0/sm1/sm2 regulator: palmas: Fix palmas_probe error handling regulator: palmas: Call palmas_ldo_[read|write] in palmas_ldo_init regulator: palmas: Fix regmap offsets for PALMAS_REG_SMPS10 vsel_reg regulator: palmas: Fix calculating selector in palmas_map_voltage_ldo 20 August 2012, 19:59:51 UTC
d408ea2 Linus Torvalds 20 August 2012, 19:59:08 UTC Merge tag 'iommu-fixes-v3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU fixes from Joerg Roedel: "Two fixes are necessary. One patch fixes a boot crash on MacBook Air with interrupt remapping enabled and the other patch fixes a regression (which causes a boot crash on AMD IOMMUv2 systems too) in the init code of the AMD IOMMU driver." * tag 'iommu-fixes-v3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/amd: Fix wrong check for ARRAY_SIZE() irq_remap: disable IRQ remapping if any IOAPIC lacks an IOMMU 20 August 2012, 19:59:08 UTC
535b6c5 Takashi Iwai 20 August 2012, 19:25:22 UTC ALSA: hda - Fix leftover codec->power_transition When the codec turn-on operation is canceled by the immediate power-on, the driver left the power_transition flag as is. This caused the persistent avoidance of power-save behavior. Cc: <stable@vger.kernel.org> [v3.5+] Signed-off-by: Takashi Iwai <tiwai@suse.de> 20 August 2012, 19:25:22 UTC
f0b433e Takashi Iwai 20 August 2012, 19:26:04 UTC Merge tag 'asoc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Additional updates for 3.6 A batch more bugfixes, all driver-specific and fairly small and unremarkable in a global context. The biggest batch are for the newly added Arizona drivers. 20 August 2012, 19:26:04 UTC
8f057d7 Guenter Roeck 20 August 2012, 18:23:16 UTC gpu/mfd/usb: Fix USB randconfig problems Fix config warning: warning: ( ... && DRM_USB) selects USB which has unmet direct dependencies (USB_SUPPORT && USB_ARCH_HAS_HCD) and build error: ERROR: "usb_speed_string" [drivers/usb/core/usbcore.ko] undefined! by adding the missing dependency on USB_ARCH_HAS_HCD to DRM_UDL and DRM_USB. This exposes: drivers/video/Kconfig:36:error: recursive dependency detected! drivers/video/Kconfig:36: symbol FB is selected by DRM_KMS_HELPER drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by DRM_UDL drivers/gpu/drm/udl/Kconfig:1: symbol DRM_UDL depends on USB_ARCH_HAS_HCD drivers/usb/Kconfig:78: symbol USB_ARCH_HAS_HCD depends on USB_ARCH_HAS_OHCI drivers/usb/Kconfig:16: symbol USB_ARCH_HAS_OHCI depends on I2C drivers/i2c/Kconfig:5: symbol I2C is selected by FB_DDC drivers/video/Kconfig:86: symbol FB_DDC is selected by FB_CYBER2000_DDC drivers/video/Kconfig:385: symbol FB_CYBER2000_DDC depends on FB_CYBER2000 drivers/video/Kconfig:373: symbol FB_CYBER2000 depends on FB which is due to drivers/usb/Kconfig: config USB_ARCH_HAS_OHCI ... default y if ARCH_PNX4008 && I2C Fix by dropping I2C from the above dependency; logic is that this is not a platform dependency but a configuration dependency: the _architecture_ still supports USB even is I2C is not selected. This exposes: drivers/video/Kconfig:36:error: recursive dependency detected! drivers/video/Kconfig:36: symbol FB is selected by DRM_KMS_HELPER drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by DRM_UDL drivers/gpu/drm/udl/Kconfig:1: symbol DRM_UDL depends on USB_ARCH_HAS_HCD drivers/usb/Kconfig:78: symbol USB_ARCH_HAS_HCD depends on USB_ARCH_HAS_OHCI drivers/usb/Kconfig:17: symbol USB_ARCH_HAS_OHCI depends on MFD_TC6393XB drivers/mfd/Kconfig:396: symbol MFD_TC6393XB depends on GPIOLIB drivers/gpio/Kconfig:35: symbol GPIOLIB is selected by FB_VIA drivers/video/Kconfig:1560: symbol FB_VIA depends on FB which can be fixed by having MFD_TC6393XB select GPIOLIB instead of depending on it. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 20 August 2012, 18:52:41 UTC
1ee9ae3 Daniel Vetter 15 August 2012, 08:41:45 UTC drm/i915: use hsw rps tuning values everywhere on gen6+ James Bottomley reported [1] a massive power regression, due to the enabling of semaphores by default in 3.5. A workaround for him is to again disable semaphores. And indeed, his system has a very hard time to enter rc6 with semaphores enabled. Ben Widawsky run around with a kill-a-watt a lot and noticed: - There are indeed a few rare systems that seem to have a hard time entering rc6 when desktop-idle. - One machine, The Indestructible Toshiba regressed in this behaviour between 3.5 and 3.6 in a merge commit! So rc6 behaviour with the current setting seems to be highly timing dependent and not robust at all. - The behaviour James reported wrt semaphores seems to be a freak timing thing that only happens on his specific machine, confirming that enabling semaphores shouldn't reduce rc6 residency. Now furthermore the Google ChromeOS guys reported [2] a while ago that at least on some machines a simply a blinking cursor can keep the gpu turbo at the highest frequency. This is because the current rps limits used on snb/ivb are highly asymmetric. On the theory that gpu turbo and rc6 tuning values are related, we've tried whether the much saner looking (since much less asymmetric) rps tuning values used for hsw would also help entering rc6 more robustly. And it seems to mostly work, and we don't really have the resources to through-roughly tune things in any better way: The values from the ChromeOS ppl seem to fare a bit worse for James' machine, so I guess we better stick with something vpg (the gpu hw/windows group) provided, hoping that they've done their jobs. Reference[1]: http://lists.freedesktop.org/archives/dri-devel/2012-July/025675.html Reference[2]: http://lists.freedesktop.org/archives/intel-gfx/2012-July/018692.html Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=53393 Tested-by: Ben Widawsky <ben@bwidawsk.net> Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> 20 August 2012, 18:49:19 UTC
c71a355 Linus Torvalds 20 August 2012, 17:36:18 UTC Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar. A x32 socket ABI fix with a -stable backport tag among other fixes. * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x32: Use compat shims for {g,s}etsockopt Revert "x86-64/efi: Use EFI to deal with platform wall clock" x86, apic: fix broken legacy interrupts in the logical apic mode x86, build: Globally set -fno-pic x86, avx: don't use avx instructions with "noxsave" boot param 20 August 2012, 17:36:18 UTC
53795ce Linus Torvalds 20 August 2012, 17:35:05 UTC Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Ingo Molnar. * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched: Fix migration thread runtime bogosity sched,rt: fix isolated CPUs leaving root_task_group indefinitely throttled sched,cgroup: Fix up task_groups list sched: fix divide by zero at {thread_group,task}_times sched, cgroup: Reduce rq->lock hold times for large cgroup hierarchies 20 August 2012, 17:35:05 UTC
f78602a Linus Torvalds 20 August 2012, 17:34:21 UTC Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 perf fixes from Ingo Molnar. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: disable PEBS on a guest entry. perf/x86: Add Intel Westmere-EX uncore support perf/x86: Fixes for Nehalem-EX uncore driver perf, x86: Fix uncore_types_exit section mismatch 20 August 2012, 17:34:21 UTC
fb34438 Linus Torvalds 20 August 2012, 17:30:57 UTC Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull a mutex fix from Ingo Molnar. Fix the fastpath_lock failure contention flag for xchg-based mutexes. * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: mutex: Place lock in contended state after fastpath_lock failure 20 August 2012, 17:30:57 UTC
0e665d5 Al Viro 20 August 2012, 14:28:00 UTC vfs: missed source of ->f_pos races compat_sys_{read,write}v() need the same "pass a copy of file->f_pos" thing as sys_{read,write}{,v}(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 20 August 2012, 17:11:47 UTC
d1c338a Sage Weil 19 August 2012, 19:29:16 UTC libceph: delay debugfs initialization until we learn global_id The debugfs directory includes the cluster fsid and our unique global_id. We need to delay the initialization of the debug entry until we have learned both the fsid and our global_id from the monitor or else the second client can't create its debugfs entry and will fail (and multiple client instances aren't properly reflected in debugfs). Reported by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Yehuda Sadeh <yehuda@inktank.com> 20 August 2012, 17:03:15 UTC
0866004 Trond Myklebust 20 August 2012, 16:42:15 UTC NFSv3: Ensure that do_proc_get_root() reports errors correctly If the rpc call to NFS3PROC_FSINFO fails, then we need to report that error so that the mount fails. Otherwise we can end up with a superblock with completely unusable values for block sizes, maxfilesize, etc. Reported-by: Yuanming Chen <hikvision_linux@163.com> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> 20 August 2012, 16:52:42 UTC
0c7bbeb Maxim Mikityanskiy 06 July 2012, 08:08:11 UTC ideapad: add Lenovo IdeaPad Z570 support (part 3) The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special keys working, adds possibility to control fan like Windows does, controls Touchpad Disabled LED, toggles touchpad state via keyboard controller and corrects touchpad behavior on resume from suspend. It is new, modified version of patch. Now it does not depend on psmouse and does not need patching of input subsystem. Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com> This is the part 3 for fan control Signed-off-by: Ike Panhc <ike.pan@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> 20 August 2012, 16:44:41 UTC
07a4a4f Maxim Mikityanskiy 06 July 2012, 08:08:00 UTC ideapad: add Lenovo IdeaPad Z570 support (part 2) The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special keys working, adds possibility to control fan like Windows does, controls Touchpad Disabled LED, toggles touchpad state via keyboard controller and corrects touchpad behavior on resume from suspend. It is new, modified version of patch. Now it does not depend on psmouse and does not need patching of input subsystem. Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com> This is part 2 for touchpad toggle Signed-off-by: Ike Panhc <ike.pan@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> 20 August 2012, 16:44:34 UTC
296f9fe Maxim Mikityanskiy 06 July 2012, 08:07:50 UTC ideapad: add Lenovo IdeaPad Z570 support (part 1) The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special keys working, adds possibility to control fan like Windows does, controls Touchpad Disabled LED, toggles touchpad state via keyboard controller and corrects touchpad behavior on resume from suspend. It is new, modified version of patch. Now it does not depend on psmouse and does not need patching of input subsystem. Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com> This is part 1 for special button handling. Signed-off-by: Ike Panhc <ike.pan@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> 20 August 2012, 16:35:30 UTC
7653f6f Trond Myklebust 20 August 2012, 16:12:29 UTC NFSv4: Ensure that nfs4_alloc_client cleans up on error. Any pointer that was allocated through nfs_alloc_client() needs to be freed via a call to nfs_free_client(). Reported-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> 20 August 2012, 16:12:29 UTC
c61e277 Alex Deucher 16 August 2012, 19:39:09 UTC drm/radeon: split ATRM support out from the ATPX handler (v3) There are systems that use ATRM, but not ATPX. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=41265 V2: fix #ifdefs as per Greg's comments V3: fix it harder Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 20 August 2012, 15:13:05 UTC
7c3906d Alex Deucher 20 August 2012, 15:06:21 UTC drm/radeon: convert radeon vfct code to use acpi_get_table_with_size Allows us to verify the table size. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 20 August 2012, 15:13:05 UTC
4f81f98 Alex Deucher 20 August 2012, 14:57:22 UTC ACPI: export symbol acpi_get_table_with_size We need it in the radeon drm module to fetch and verify the vbios image on UEFI systems. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 20 August 2012, 15:13:04 UTC
268ba0a David Lamparter 16 August 2012, 19:45:20 UTC drm/radeon: implement ACPI VFCT vbios fetch (v3) This is required for pure UEFI systems. The vbios is stored in ACPI rather than at the legacy vga location. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=26891 V2: fix #ifdefs as per Greg's comments V3: fix it harder Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Cc: stable@vger.kernel.org 20 August 2012, 15:09:50 UTC
52e9b39 Tvrtko Ursulin 20 August 2012, 14:16:04 UTC drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping There is a more recent APU stepping with a new PCI ID shipping in the same board by Fujitsu which needs the same quirk to correctly mark the back plane connectors. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org 20 August 2012, 15:09:50 UTC
fcdeefe Marek Olšák 19 August 2012, 19:23:26 UTC drm/radeon: fix checking of MSAA renderbuffers on r600-r700 The MSAA checking was mostly unimplemented on r600-r700. The userspace submits GPU commands and the kernel driver computes how much memory the GPU will access and checks if it's all within buffer bounds the userspace allocated. This patch fixes the computations of the size of MSAA surfaces in memory. Signed-off-by: Marek Olšák <maraeo@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 20 August 2012, 15:09:49 UTC
c116cc9 Marek Olšák 19 August 2012, 00:22:09 UTC drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700 MSAA is impossible without them. Signed-off-by: Marek Olšák <maraeo@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> 20 August 2012, 15:09:49 UTC
48c0ac9 Christian König 20 August 2012, 13:38:47 UTC drm/radeon: init lockup timeout on ring init Reset the lockup timeout on ring (re-)initialisation. Otherwise we get error messages like this on gpu resets: [ 1559.949177] radeon 0000:01:00.0: GPU lockup CP stall for more than 1482270msec Signed-off-by: Christian König <deathsimple@vodafone.de> cc: stable@vger.kernel.org Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> 20 August 2012, 15:09:48 UTC
5efcc76 Jerome Glisse 17 August 2012, 18:40:04 UTC drm/radeon: avoid turning off spread spectrum for used pll If spread spectrum is enabled and in use for a given pll we should not turn it off as it will lead to turning off display for crtc that use the pll (this behavior was observed on chelsea edp). Signed-off-by: Jerome Glisse <jglisse@redhat.com> Cc: stable@vger.kernel.org Reviewed-by: Alex Deucher <alexander.deucher@amd.com> 20 August 2012, 15:09:48 UTC
fae6ef8 Neal Cardwell 19 August 2012, 03:30:38 UTC net: tcp: move sk_rx_dst_set call after tcp_create_openreq_child() This commit removes the sk_rx_dst_set calls from tcp_create_openreq_child(), because at that point the icsk_af_ops field of ipv6_mapped TCP sockets has not been set to its proper final value. Instead, to make sure we get the right sk_rx_dst_set variant appropriate for the address family of the new connection, we have tcp_v{4,6}_syn_recv_sock() directly call the appropriate function shortly after the call to tcp_create_openreq_child() returns. This also moves inet6_sk_rx_dst_set() to avoid a forward declaration with the new approach. Signed-off-by: Neal Cardwell <ncardwell@google.com> Reported-by: Artem Savkov <artem.savkov@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 20 August 2012, 10:03:33 UTC
3de7a37 Randy Dunlap 18 August 2012, 14:36:44 UTC net/core/dev.c: fix kernel-doc warning Fix kernel-doc warning: Warning(net/core/dev.c:5745): No description found for parameter 'dev' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net> 20 August 2012, 10:00:55 UTC
72d3eb1 Amerigo Wang 18 August 2012, 07:02:20 UTC netconsole: remove a redundant netconsole_target_put() This netconsole_target_put() is obviously redundant, and it causes a kernel segfault when removing a bridge device which has netconsole running on it. This is caused by: commit 8d8fc29d02a33e4bd5f4fa47823c1fd386346093 Author: Amerigo Wang <amwang@redhat.com> Date: Thu May 19 21:39:10 2011 +0000 netpoll: disable netpoll when enslave a device Cc: David Miller <davem@davemloft.net> (for all 3.x stable releases) Cc: stable@vger.kernel.org Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> 20 August 2012, 09:59:49 UTC
b817bf5 Thierry Reding 16 August 2012, 06:01:21 UTC pwm: Improve Kconfig help text The Kconfig help text should help the user understand what functionality is provided by an option. This is especially true for new subsystems. An improved help text is provided by this commit in the hopes of clarifying the usefulness of the PWM framework. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Borislav Petkov <bp@alien8.de> 20 August 2012, 09:58:43 UTC
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