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c3b92c8 Linux 3.1 24 October 2011, 07:10:05 UTC
6a05965 Merge git://git.infradead.org/iommu-2.6 * git://git.infradead.org/iommu-2.6: intel-iommu: fix superpage support in pfn_to_dma_pte() intel-iommu: set iommu_superpage on VM domains to lowest common denominator intel-iommu: fix return value of iommu_unmap() API MAINTAINERS: Update VT-d entry for drivers/pci -> drivers/iommu move intel-iommu: Export a flag indicating that the IOMMU is used for iGFX. intel-iommu: Workaround IOTLB hang on Ironlake GPU intel-iommu: Fix AB-BA lockdep report 24 October 2011, 05:08:24 UTC
15cc910 Merge branch 'for-linus' of http://people.redhat.com/agk/git/linux-dm * 'for-linus' of http://people.redhat.com/agk/git/linux-dm: dm kcopyd: fix job_pool leak 24 October 2011, 05:05:38 UTC
8548c84 x86: Fix S4 regression Commit 4b239f458 ("x86-64, mm: Put early page table high") causes a S4 regression since 2.6.39, namely the machine reboots occasionally at S4 resume. It doesn't happen always, overall rate is about 1/20. But, like other bugs, once when this happens, it continues to happen. This patch fixes the problem by essentially reverting the memory assignment in the older way. Signed-off-by: Takashi Iwai <tiwai@suse.de> Cc: <stable@kernel.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Yinghai Lu <yinghai.lu@oracle.com> [ We'll hopefully find the real fix, but that's too late for 3.1 now ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 24 October 2011, 04:55:20 UTC
d136f2e dm kcopyd: fix job_pool leak Fix memory leak introduced by commit a6e50b409d3f9e0833e69c3c9cca822e8fa4adbb (dm snapshot: skip reading origin when overwriting complete chunk). When allocating a set of jobs from kc->job_pool, job->master_job must be set (to point to itself) so that the mempool item gets freed when the master_job completes. master_job was introduced by commit c6ea41fbbe08f270a8edef99dc369faf809d1bd6 (dm kcopyd: preallocate sub jobs to avoid deadlock) Reported-by: Michael Leun <ml@newton.leun.net> Cc: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> 23 October 2011, 19:55:17 UTC
1bf1aac Merge branch 'samsung-fixes-4' of git://github.com/kgene/linux-samsung * 'samsung-fixes-4' of git://github.com/kgene/linux-samsung: ARM: S3C24XX: Fix s3c24xx build errors if !CONFIG_PM ARM: S5P: fix offset calculation on gpio-interrupt 23 October 2011, 07:44:40 UTC
5117cc2 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (w83627ehf) Fix negative 8-bit temperature values 23 October 2011, 07:43:31 UTC
fb630b9 ARM: S3C24XX: Fix s3c24xx build errors if !CONFIG_PM v2: - register_syscore_ops(&s3c24xx_irq_syscore_ops) does not need to be conditionally compiled out, it is already optimized out on !CONFIG_PM - fix also s3c2412 and s3c2416 affected by the same build issue v1: s3c2440.c fails to build if !CONFIG_PM because in such case s3c2410_pm_syscore_ops is not defined. Same error should happen also in s3c2410.c and s3c2442.c Signed-off-by: Domenico Andreoli <cavokz@gmail.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> 21 October 2011, 19:00:53 UTC
2efd7c0 Merge git://github.com/herbertx/crypto * git://github.com/herbertx/crypto: crypto: ghash - Avoid null pointer dereference if no key is set 21 October 2011, 14:02:18 UTC
62ddc00 Merge branch 'fix/hda' of git://github.com/tiwai/sound * 'fix/hda' of git://github.com/tiwai/sound: ALSA: HDA: conexant support for Lenovo T520/W520 ALSA: hda - Add position_fix quirk for Dell Inspiron 1010 21 October 2011, 14:01:21 UTC
7ed47b7 crypto: ghash - Avoid null pointer dereference if no key is set The ghash_update function passes a pointer to gf128mul_4k_lle which will be NULL if ghash_setkey is not called or if the most recent call to ghash_setkey failed to allocate memory. This causes an oops. Fix this up by returning an error code in the null case. This is trivially triggered from unprivileged userspace through the AF_ALG interface by simply writing to the socket without setting a key. The ghash_final function has a similar issue, but triggering it requires a memory allocation failure in ghash_setkey _after_ at least one successful call to ghash_update. BUG: unable to handle kernel NULL pointer dereference at 00000670 IP: [<d88c92d4>] gf128mul_4k_lle+0x23/0x60 [gf128mul] *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ghash_generic gf128mul algif_hash af_alg nfs lockd nfs_acl sunrpc bridge ipv6 stp llc Pid: 1502, comm: hashatron Tainted: G W 3.1.0-rc9-00085-ge9308cf #32 Bochs Bochs EIP: 0060:[<d88c92d4>] EFLAGS: 00000202 CPU: 0 EIP is at gf128mul_4k_lle+0x23/0x60 [gf128mul] EAX: d69db1f0 EBX: d6b8ddac ECX: 00000004 EDX: 00000000 ESI: 00000670 EDI: d6b8ddac EBP: d6b8ddc8 ESP: d6b8dda4 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process hashatron (pid: 1502, ti=d6b8c000 task=d6810000 task.ti=d6b8c000) Stack: 00000000 d69db1f0 00000163 00000000 d6b8ddc8 c101a520 d69db1f0 d52aa000 00000ff0 d6b8dde8 d88d310f d6b8a3f8 d52aa000 00001000 d88d502c d6b8ddfc 00001000 d6b8ddf4 c11676ed d69db1e8 d6b8de24 c11679ad d52aa000 00000000 Call Trace: [<c101a520>] ? kmap_atomic_prot+0x37/0xa6 [<d88d310f>] ghash_update+0x85/0xbe [ghash_generic] [<c11676ed>] crypto_shash_update+0x18/0x1b [<c11679ad>] shash_ahash_update+0x22/0x36 [<c11679cc>] shash_async_update+0xb/0xd [<d88ce0ba>] hash_sendpage+0xba/0xf2 [algif_hash] [<c121b24c>] kernel_sendpage+0x39/0x4e [<d88ce000>] ? 0xd88cdfff [<c121b298>] sock_sendpage+0x37/0x3e [<c121b261>] ? kernel_sendpage+0x4e/0x4e [<c10b4dbc>] pipe_to_sendpage+0x56/0x61 [<c10b4e1f>] splice_from_pipe_feed+0x58/0xcd [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10 [<c10b51f5>] __splice_from_pipe+0x36/0x55 [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10 [<c10b6383>] splice_from_pipe+0x51/0x64 [<c10b63c2>] ? default_file_splice_write+0x2c/0x2c [<c10b63d5>] generic_splice_sendpage+0x13/0x15 [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10 [<c10b527f>] do_splice_from+0x5d/0x67 [<c10b6865>] sys_splice+0x2bf/0x363 [<c129373b>] ? sysenter_exit+0xf/0x16 [<c104dc1e>] ? trace_hardirqs_on_caller+0x10e/0x13f [<c129370c>] sysenter_do_call+0x12/0x32 Code: 83 c4 0c 5b 5e 5f c9 c3 55 b9 04 00 00 00 89 e5 57 8d 7d e4 56 53 8d 5d e4 83 ec 18 89 45 e0 89 55 dc 0f b6 70 0f c1 e6 04 01 d6 <f3> a5 be 0f 00 00 00 4e 89 d8 e8 48 ff ff ff 8b 45 e0 89 da 0f EIP: [<d88c92d4>] gf128mul_4k_lle+0x23/0x60 [gf128mul] SS:ESP 0068:d6b8dda4 CR2: 0000000000000670 ---[ end trace 4eaa2a86a8e2da24 ]--- note: hashatron[1502] exited with preempt_count 1 BUG: scheduling while atomic: hashatron/1502/0x10000002 INFO: lockdep is turned off. [...] Signed-off-by: Nick Bowler <nbowler@elliptictech.com> Cc: stable@kernel.org [2.6.37+] Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 21 October 2011, 11:18:42 UTC
1052cff ARM: S5P: fix offset calculation on gpio-interrupt Offsets of the irq controller registers were calculated correctly only for first GPIO bank. This patch fixes calculation of the register offsets for all GPIO banks. Reported-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> 21 October 2011, 09:05:02 UTC
fd11e15 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: Add alignment flag to PCI expansion resources sparc: Avoid calling sigprocmask() sparc: Use set_current_blocked() sparc32,leon: SRMMU MMU Table probe fix 20 October 2011, 19:16:28 UTC
505f48b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: fib_rules: fix unresolved_rules counting r8169: fix wrong eee setting for rlt8111evl r8169: fix driver shutdown WoL regression. ehea: Change maintainer to me pptp: pptp_rcv_core() misses pskb_may_pull() call tproxy: copy transparent flag when creating a time wait pptp: fix skb leak in pptp_xmit() bonding: use local function pointer of bond->recv_probe in bond_handle_frame smsc911x: Add support for SMSC LAN89218 tg3: negate USE_PHYLIB flag check netconsole: enable netconsole can make net_device refcnt incorrent bluetooth: Properly clone LSM attributes to newly created child connections l2tp: fix a potential skb leak in l2tp_xmit_skb() bridge: fix hang on removal of bridge via netlink x25: Prevent skb overreads when checking call user data x25: Handle undersized/fragmented skbs x25: Validate incoming call user data lengths udplite: fast-path computation of checksum coverage IPVS netns shutdown/startup dead-lock netfilter: nf_conntrack: fix event flooding in GRE protocol tracker 20 October 2011, 19:15:20 UTC
133d324 hwmon: (w83627ehf) Fix negative 8-bit temperature values Since 8-bit temperature values are now handled in 16-bit struct members, values have to be cast to s8 for negative temperatures to be properly handled. This is broken since kernel version 2.6.39 (commit bce26c58df86599c9570cee83eac58bdaae760e4.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Guenter Roeck <guenter.roeck@ericsson.com> Cc: stable@kernel.org # 2.6.39+ Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> 20 October 2011, 14:17:08 UTC
486cf46 mm: fix race between mremap and removing migration entry I don't usually pay much attention to the stale "? " addresses in stack backtraces, but this lucky report from Pawel Sikora hints that mremap's move_ptes() has inadequate locking against page migration. 3.0 BUG_ON(!PageLocked(p)) in migration_entry_to_page(): kernel BUG at include/linux/swapops.h:105! RIP: 0010:[<ffffffff81127b76>] [<ffffffff81127b76>] migration_entry_wait+0x156/0x160 [<ffffffff811016a1>] handle_pte_fault+0xae1/0xaf0 [<ffffffff810feee2>] ? __pte_alloc+0x42/0x120 [<ffffffff8112c26b>] ? do_huge_pmd_anonymous_page+0xab/0x310 [<ffffffff81102a31>] handle_mm_fault+0x181/0x310 [<ffffffff81106097>] ? vma_adjust+0x537/0x570 [<ffffffff81424bed>] do_page_fault+0x11d/0x4e0 [<ffffffff81109a05>] ? do_mremap+0x2d5/0x570 [<ffffffff81421d5f>] page_fault+0x1f/0x30 mremap's down_write of mmap_sem, together with i_mmap_mutex or lock, and pagetable locks, were good enough before page migration (with its requirement that every migration entry be found) came in, and enough while migration always held mmap_sem; but not enough nowadays, when there's memory hotremove and compaction. The danger is that move_ptes() lets a migration entry dodge around behind remove_migration_pte()'s back, so it's in the old location when looking at the new, then in the new location when looking at the old. Either mremap's move_ptes() must additionally take anon_vma lock(), or migration's remove_migration_pte() must stop peeking for is_swap_entry() before it takes pagetable lock. Consensus chooses the latter: we prefer to add overhead to migration than to mremapping, which gets used by JVMs and by exec stack setup. Reported-and-tested-by: Paweł Sikora <pluto@agmk.net> Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 20 October 2011, 06:42:58 UTC
aad4564 sparc: Add alignment flag to PCI expansion resources Currently no type of alignment is specified for PCI expansion roms while parsing the openfirmware tree. This causes calls to pci_map_rom() to fail. IORESOURCE_SIZEALIGN is the default alignment used for rom resouces in pci/probe.c, and has been verified to work with various cards on a ultra 10. Signed-off-By: Kjetil Oftedal <oftedal@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 23:20:50 UTC
afaef73 fib_rules: fix unresolved_rules counting we should decrease ops->unresolved_rules when deleting a unresolved rule. Signed-off-by: Zheng Yan <zheng.z.yan@intel.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 23:17:41 UTC
1b23a3e r8169: fix wrong eee setting for rlt8111evl Correct the wrong parameter for setting EEE for RTL8111E-VL. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 22:48:17 UTC
649b3b8 r8169: fix driver shutdown WoL regression. Due to commit 92fc43b4159b518f5baae57301f26d770b0834c9 ("r8169: modify the flow of the hw reset."), rtl8169_hw_reset stomps during driver shutdown on RxConfig bits which are needed for WOL on some versions of the hardware. As these bits were formerly set from the r81{0x, 68}_pll_power_down methods, factor them out for use in the driver shutdown (rtl_shutdown) handler. I favored __rtl8169_get_wol() -hardware state indication- over RTL_FEATURE_WOL as the latter has become a good candidate for removal. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Cc: Hayes <hayeswang@realtek.com> Tested-by: Marc Ballarin <ballarin.marc@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 21:08:21 UTC
34b1901 ehea: Change maintainer to me Breno Leitao has passed the maintainership to me. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Cc: Breno Leitao <leitao@linux.vnet.ibm.com> Acked-by: Breno Leitão <leitao@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 20:01:20 UTC
e4fcd69 Merge branch 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus * 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus: [media] videodev: fix a NULL pointer dereference in v4l2_device_release() 19 October 2011, 13:44:11 UTC
f91f6cf Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon/kms/atom: fix handling of FB scratch indices drm/radeon/kms/DCE4.1: fix Select_CrtcSource EncodeMode setting for DP bridges (v2) drm/radeon/kms/DCE4.1: ss is not supported on the internal pplls drm/radeon/kms/DCE4.1: fix dig encoder to transmitter mapping ttm: Fix error-path using an uninitialized value 19 October 2011, 13:43:24 UTC
e58fced [media] videodev: fix a NULL pointer dereference in v4l2_device_release() The change in 8280b66 does not cover the case when v4l2_dev is already NULL, fix that. With a Kinect sensor, seen as an USB camera using GSPCA in this context, a NULL pointer dereference BUG can be triggered by just unplugging the device after the camera driver has been loaded. Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> 19 October 2011, 11:48:08 UTC
4399c8b intel-iommu: fix superpage support in pfn_to_dma_pte() If target_level == 0, current code breaks out of the while-loop if SUPERPAGE bit is set. We should also break out if PTE is not present. If we don't do this, KVM calls to iommu_iova_to_phys() will cause pfn_to_dma_pte() to create mapping for 4KiB pages. Signed-off-by: Allen Kay <allen.m.kay@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 19 October 2011, 11:06:22 UTC
8140a95 intel-iommu: set iommu_superpage on VM domains to lowest common denominator set dmar->iommu_superpage field to the smallest common denominator of super page sizes supported by all active VT-d engines. Initialize this field in intel_iommu_domain_init() API so intel_iommu_map() API will be able to use iommu_superpage field to determine the appropriate super page size to use. Signed-off-by: Allen Kay <allen.m.kay@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 19 October 2011, 11:06:20 UTC
292827c intel-iommu: fix return value of iommu_unmap() API iommu_unmap() API expects IOMMU drivers to return the actual page order of the address being unmapped. Previous code was just returning page order passed in from the caller. This patch fixes this problem. Signed-off-by: Allen Kay <allen.m.kay@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 19 October 2011, 11:06:18 UTC
3fb3961 MAINTAINERS: Update VT-d entry for drivers/pci -> drivers/iommu move Commit 166e9278a3f9 ("x86/ia64: intel-iommu: move to drivers/iommu/") moved the VT-d driver to drivers/iommu, but left the "F:" line in MAINTAINERS pointing to drivers/pci, which breaks scripts/get_maintainer.pl. Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 19 October 2011, 11:05:55 UTC
5a6e848 drm/radeon/kms/atom: fix handling of FB scratch indices FB scratch indices are dword indices, but we were treating them as byte indices. As such, we were getting the wrong FB scratch data for non-0 indices. Fix the indices and guard the indexing against indices larger than the scratch allocation. Fixes memory corruption on some boards if data was written past the end of the FB scratch array. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reported-by: Dave Airlie <airlied@redhat.com> Tested-by: Dave Airlie <airlied@redhat.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com> 19 October 2011, 08:47:47 UTC
4ea2739 pptp: pptp_rcv_core() misses pskb_may_pull() call e1000e uses paged frags, so any layer incorrectly pulling bytes from skb can trigger a BUG in skb_pull() [951.142737] [<ffffffff813d2f36>] skb_pull+0x15/0x17 [951.142737] [<ffffffffa0286824>] pptp_rcv_core+0x126/0x19a [pptp] [951.152725] [<ffffffff813d17c4>] sk_receive_skb+0x69/0x105 [951.163558] [<ffffffffa0286993>] pptp_rcv+0xc8/0xdc [pptp] [951.165092] [<ffffffffa02800a3>] gre_rcv+0x62/0x75 [gre] [951.165092] [<ffffffff81410784>] ip_local_deliver_finish+0x150/0x1c1 [951.177599] [<ffffffff81410634>] ? ip_local_deliver_finish+0x0/0x1c1 [951.177599] [<ffffffff81410846>] NF_HOOK.clone.7+0x51/0x58 [951.177599] [<ffffffff81410996>] ip_local_deliver+0x51/0x55 [951.177599] [<ffffffff814105b9>] ip_rcv_finish+0x31a/0x33e [951.177599] [<ffffffff8141029f>] ? ip_rcv_finish+0x0/0x33e [951.204898] [<ffffffff81410846>] NF_HOOK.clone.7+0x51/0x58 [951.214651] [<ffffffff81410bb5>] ip_rcv+0x21b/0x246 pptp_rcv_core() is a nice example of a function assuming everything it needs is available in skb head. Reported-by: Bradley Peterson <despite@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 07:50:43 UTC
58af19e tproxy: copy transparent flag when creating a time wait The transparent socket option setting was not copied to the time wait socket when an inet socket was being replaced by a time wait socket. This broke the --transparent option of the socket match and may have caused that FIN packets belonging to sockets in FIN_WAIT2 or TIME_WAIT state were being dropped by the packet filter. Signed-off-by: KOVACS Krisztian <hidden@balabit.hu> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 07:21:35 UTC
8bae8bd pptp: fix skb leak in pptp_xmit() In case we cant transmit skb, we must free it Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Dmitry Kozlov <xeb@mail.ru> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 06:39:43 UTC
4d97480 bonding: use local function pointer of bond->recv_probe in bond_handle_frame The bond->recv_probe is called in bond_handle_frame() when a packet is received, but bond_close() sets it to NULL. So, a panic occurs when both functions work in parallel. Why this happen: After null pointer check of bond->recv_probe, an sk_buff is duplicated and bond->recv_probe is called in bond_handle_frame. So, a panic occurs when bond_close() is called between the check and call of bond->recv_probe. Patch: This patch uses a local function pointer of bond->recv_probe in bond_handle_frame(). So, it can avoid the null pointer dereference. Signed-off-by: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com> Cc: Jay Vosburgh <fubar@us.ibm.com> Cc: Andy Gospodarek <andy@greyhouse.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 04:14:22 UTC
28c2137 smsc911x: Add support for SMSC LAN89218 LAN89218 is register compatible with LAN911x. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 04:01:01 UTC
e730c82 tg3: negate USE_PHYLIB flag check USE_PHYLIB flag in tg3_remove_one() is being checked incorrectly. This results tg3_phy_fini->phy_disconnect is never called and when tg3 module is removed. In my case this resulted in panics in phy_state_machine calling function phydev->adjust_link. So correct this check. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 03:59:33 UTC
d512348 netconsole: enable netconsole can make net_device refcnt incorrent There is no check if netconsole is enabled current. so when exec echo 1 > enabled; the reference of net_device will increment always. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Acked-by: Flavio Leitner <fbl@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 03:55:29 UTC
6230c9b bluetooth: Properly clone LSM attributes to newly created child connections The Bluetooth stack has internal connection handlers for all of the various Bluetooth protocols, and unfortunately, they are currently lacking the LSM hooks found in the core network stack's connection handlers. I say unfortunately, because this can cause problems for users who have have an LSM enabled and are using certain Bluetooth devices. See one problem report below: * http://bugzilla.redhat.com/show_bug.cgi?id=741703 In order to keep things simple at this point in time, this patch fixes the problem by cloning the parent socket's LSM attributes to the newly created child socket. If we decide we need a more elaborate LSM marking mechanism for Bluetooth (I somewhat doubt this) we can always revisit this decision in the future. Reported-by: James M. Cape <jcape@ignore-your.tv> Signed-off-by: Paul Moore <pmoore@redhat.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 03:36:43 UTC
835acf5 l2tp: fix a potential skb leak in l2tp_xmit_skb() l2tp_xmit_skb() can leak one skb if skb_cow_head() returns an error. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 03:32:00 UTC
1ce5cce bridge: fix hang on removal of bridge via netlink Need to cleanup bridge device timers and ports when being bridge device is being removed via netlink. This fixes the problem of observed when doing: ip link add br0 type bridge ip link set dev eth1 master br0 ip link set br0 up ip link del br0 which would cause br0 to hang in unregister_netdev because of leftover reference count. Reported-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> 19 October 2011, 03:24:16 UTC
bcd5cff cputimer: Cure lock inversion There's a lock inversion between the cputimer->lock and rq->lock; notably the two callchains involved are: update_rlimit_cpu() sighand->siglock set_process_cpu_timer() cpu_timer_sample_group() thread_group_cputimer() cputimer->lock thread_group_cputime() task_sched_runtime() ->pi_lock rq->lock scheduler_tick() rq->lock task_tick_fair() update_curr() account_group_exec() cputimer->lock Where the first one is enabling a CLOCK_PROCESS_CPUTIME_ID timer, and the second one is keeping up-to-date. This problem was introduced by e8abccb7193 ("posix-cpu-timers: Cure SMP accounting oddities"). Cure the problem by removing the cputimer->lock and rq->lock nesting, this leaves concurrent enablers doing duplicate work, but the time wasted should be on the same order otherwise wasted spinning on the lock and the greater-than assignment filter should ensure we preserve monotonicity. Reported-by: Dave Jones <davej@redhat.com> Reported-by: Simon Kirby <sim@hostway.ca> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: stable@kernel.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/1318928713.21167.4.camel@twins Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 18 October 2011, 09:36:59 UTC
a4863ca drm/radeon/kms/DCE4.1: fix Select_CrtcSource EncodeMode setting for DP bridges (v2) Settings in this table reflect the physical panel/connector rather than the internal dig encoding. v2: fix typo for DRM_MODE_CONNECTOR_VGA case. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> 18 October 2011, 09:16:55 UTC
09cc650 drm/radeon/kms/DCE4.1: ss is not supported on the internal pplls It's handled via external clock. It should already be protected by the external ss flag, but add an explicit check just in case. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> 18 October 2011, 09:16:33 UTC
3a6dea3 drm/radeon/kms/DCE4.1: fix dig encoder to transmitter mapping llano has fully routeable dig encoders similar to DCE3.2 while ontario has a hardcoded mapping similar to DCE4.0. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> 18 October 2011, 09:16:10 UTC
ca201c0 ALSA: HDA: conexant support for Lenovo T520/W520 This is patch for Conexant codec of Intel HDA driver, adding new quirk for Lenovo Thinkpad T520 and W520. Conexant autodetection works fine for T520 (similar subsystem ID is used also in W520 model) and detects more mixer features compared to generic (fallback) Lenovo quirk with hardcoded options in Conexant codec. Patch was activelly tested with Linux 3.0.4, 3.0.6 and 3.0.7 without any problems. Signed-off-by: Daniel Suchy <danny@danysek.cz> Cc: <stable@kernel.org> [3.0+] Signed-off-by: Takashi Iwai <tiwai@suse.de> 18 October 2011, 09:09:44 UTC
051a8cb ALSA: hda - Add position_fix quirk for Dell Inspiron 1010 The previous fix for the position-buffer check gives yet another regression on a Dell laptop. The safest fix right now is to add a static quirk for this device (and better to apply it for stable kernels too). Reported-by: Éric Piel <Eric.Piel@tremplin-utc.net> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> 18 October 2011, 08:44:05 UTC
e22469c ttm: Fix error-path using an uninitialized value Pointed out by Michel Daenzer. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com> 18 October 2011, 08:37:49 UTC
899e3ee Linux 3.1-rc10 18 October 2011, 04:06:23 UTC
ae2a458 Merge branch 'nf' of git://1984.lsi.us.es/net 17 October 2011, 23:38:03 UTC
7f81e25 x25: Prevent skb overreads when checking call user data x25_find_listener does not check that the amount of call user data given in the skb is big enough in per-socket comparisons, hence buffer overreads may occur. Fix this by adding a check. Signed-off-by: Matthew Daley <mattjd@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Andrew Hendry <andrew.hendry@gmail.com> Cc: stable <stable@kernel.org> Acked-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 17 October 2011, 23:31:40 UTC
cb101ed x25: Handle undersized/fragmented skbs There are multiple locations in the X.25 packet layer where a skb is assumed to be of at least a certain size and that all its data is currently available at skb->data. These assumptions are not checked, hence buffer overreads may occur. Use pskb_may_pull to check these minimal size assumptions and ensure that data is available at skb->data when necessary, as well as use skb_copy_bits where needed. Signed-off-by: Matthew Daley <mattjd@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Andrew Hendry <andrew.hendry@gmail.com> Cc: stable <stable@kernel.org> Acked-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 17 October 2011, 23:31:39 UTC
c7fd0d4 x25: Validate incoming call user data lengths X.25 call user data is being copied in its entirety from incoming messages without consideration to the size of the destination buffers, leading to possible buffer overflows. Validate incoming call user data lengths before these copies are performed. It appears this issue was noticed some time ago, however nothing seemed to come of it: see http://www.spinics.net/lists/linux-x25/msg00043.html and commit 8db09f26f912f7c90c764806e804b558da520d4f. Signed-off-by: Matthew Daley <mattjd@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Andrew Hendry <andrew.hendry@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> 17 October 2011, 23:31:39 UTC
f36c23b udplite: fast-path computation of checksum coverage Commit 903ab86d195cca295379699299c5fc10beba31c7 of 1 March this year ("udp: Add lockless transmit path") introduced a new fast TX path that broke the checksum coverage computation of UDP-lite, which so far depended on up->len (only set if the socket is locked and 0 in the fast path). Fixed by providing both fast- and slow-path computation of checksum coverage. The latter can be removed when UDP(-lite)v6 also uses a lockless transmit path. Reported-by: Thomas Volkert <thomas@homer-conferencing.com> Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net> 17 October 2011, 23:07:30 UTC
a84a79e Avoid using variable-length arrays in kernel/sys.c The size is always valid, but variable-length arrays generate worse code for no good reason (unless the function happens to be inlined and the compiler sees the length for the simple constant it is). Also, there seems to be some code generation problem on POWER, where Henrik Bakken reports that register r28 can get corrupted under some subtle circumstances (interrupt happening at the wrong time?). That all indicates some seriously broken compiler issues, but since variable length arrays are bad regardless, there's little point in trying to chase it down. "Just don't do that, then". Reported-by: Henrik Grindal Bakken <henribak@cisco.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 17 October 2011, 15:24:24 UTC
8bc03e8 Merge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: ARM: 7128/1: vic: Don't write to the read-only register VIC_IRQ_STATUS ARM: 7122/1: localtimer: add header linux/errno.h explicitly ARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9 ARM: 7113/1: mm: Align bank start to MAX_ORDER_NR_PAGES 16 October 2011, 20:08:27 UTC
f8be12d ARM: 7128/1: vic: Don't write to the read-only register VIC_IRQ_STATUS This is unneeded and causes an abort on the SPMP8000 platform. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Zoltan Devai <zoss@devai.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 15 October 2011, 10:04:22 UTC
bb1ac3e ARM: 7122/1: localtimer: add header linux/errno.h explicitly Per the text in Documentation/SubmitChecklist as below, we should explicitly have header linux/errno.h in localtimer.h for ENXIO reference. 1: If you use a facility then #include the file that defines/declares that facility. Don't depend on other header files pulling in ones that you use. Otherwise, we may run into some compiling error like the following one, if any file includes localtimer.h without CONFIG_LOCAL_TIMERS defined. arch/arm/include/asm/localtimer.h: In function ‘local_timer_setup’: arch/arm/include/asm/localtimer.h:53:10: error: ‘ENXIO’ undeclared (first use in this function) Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 15 October 2011, 10:04:22 UTC
29a541f ARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9 Using COHERENT_LINE_{MISS,HIT} for cache misses and references respectively is completely wrong. Instead, use the L1D events which are a better and more useful approximation despite ignoring instruction traffic. Reported-by: Alasdair Grant <alasdair.grant@arm.com> Reported-by: Matt Horsnell <matt.horsnell@arm.com> Reported-by: Michael Williams <michael.williams@arm.com> Cc: stable@kernel.org Cc: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 15 October 2011, 10:04:22 UTC
4c41042 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (w83627ehf) Properly report thermal diode sensors 14 October 2011, 20:29:09 UTC
c0771df intel-iommu: Export a flag indicating that the IOMMU is used for iGFX. We really don't want this to work in the general case; device drivers *shouldn't* care whether they are behind an IOMMU or not. But the integrated graphics is a special case, because the IOMMU and the GTT are all kind of smashed into one and generally horrifically buggy, so it's reasonable for the graphics driver to want to know when the IOMMU is active for the graphics hardware. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 14 October 2011, 19:59:46 UTC
6fbcfb3 intel-iommu: Workaround IOTLB hang on Ironlake GPU To work around a hardware issue, we have to submit IOTLB flushes while the graphics engine is idle. The graphics driver will (we hope) go to great lengths to ensure that it gets that right on the affected chipset(s)... so let's not screw it over by deferring the unmap and doing it later. That wouldn't be very helpful. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 14 October 2011, 19:51:44 UTC
e9308cf Merge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6 * 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6: gpio-pca953x: fix gpio_base gpio/omap: fix build error with certain OMAP1 configs 14 October 2011, 05:07:52 UTC
4800829 Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs * 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: revert to using a kthread for AIL pushing xfs: force the log if we encounter pinned buffers in .iop_pushbuf xfs: do not update xa_last_pushed_lsn for locked items 14 October 2011, 05:06:39 UTC
95bc156 Merge branch 'stable' of git://github.com/cmetcalf-tilera/linux-tile * 'stable' of git://github.com/cmetcalf-tilera/linux-tile: tile: revert change from <asm/atomic.h> to <linux/atomic.h> in asm files 14 October 2011, 04:59:11 UTC
2ad5311 Merge branch 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip * 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip: x86: Default to vsyscall=native for now 14 October 2011, 04:54:56 UTC
153b19a x86, mrst: use a temporary variable for SFI irq SFI tables reside in RAM and should not be modified once they are written. Current code went to set pentry->irq to zero which causes subsequent reads to fail with invalid SFI table checksum. This will break kexec as the second kernel fails to validate SFI tables. To fix this we use temporary variable for irq number. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 14 October 2011, 04:53:27 UTC
bf164c5 hwmon: (w83627ehf) Properly report thermal diode sensors The w83627ehf driver is improperly reporting thermal diode sensors as type 2, instead of 3. This caused "sensors" and possibly other monitoring tools to report these sensors as "transistor" instead of "thermal diode". Furthermore, diode subtype selection (CPU vs. external) is only supported by the original W83627EHF/EHG. All later models only support CPU diode type, and some (NCT6776F) don't even have the register in question so we should avoid reading from it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> 13 October 2011, 23:51:29 UTC
25fcf2b gpio-pca953x: fix gpio_base gpio_base was set to 0 if no system platform data or open firmware platform data was provided. This led to conflicts, if any other gpiochip with a gpiobase of 0 was instantiated already. Setting it to -1 will automatically use the first one available. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> 13 October 2011, 19:49:37 UTC
78a4315 gpio/omap: fix build error with certain OMAP1 configs With commit f64ad1a0e21a, "gpio/omap: cleanup _set_gpio_wakeup(), remove ifdefs", access to build time conditionally omitted 'suspend_wakeup' member of the 'gpio_bank' structure has been placed unconditionally in function _set_gpio_wakeup(), which is always built. This resulted in the driver compilation broken for certain OMAP1, i.e., non-OMAP16xx, configurations. Really required or not in previously excluded cases, define this structure member unconditionally as a fix. Tested with a custom OMAP1510 only configuration. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Acked-by: Kevin Hilman <khilman@ti.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> 13 October 2011, 17:48:25 UTC
d52104b tile: revert change from <asm/atomic.h> to <linux/atomic.h> in asm files The 32-bit TILEPro support uses some #defines in <asm/atomic_32.h> for atomic support routines in assembly. To make this more explicit, I've turned those includes into includes of <asm/atomic_32.h>, which should hopefully make it clear that they shouldn't be bombed into <linux/atomic.h> in any cleanups. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> 13 October 2011, 12:25:01 UTC
37cf951 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: mscan: too much data copied to CAN frame due to 16 bit accesses gro: refetch inet6_protos[] after pulling ext headers bnx2x: fix cl_id allocation for non-eth clients for NPAR mode mlx4_en: fix endianness with blue frame support 13 October 2011, 06:25:45 UTC
1d11360 ide: Fix file references in drivers/ide/ Fix file references in drivers/ide/ There are a lot of file references to now moved or deleted files in the whole tree, especially in documentation and Kconfig files. This patch fixes the references in drivers/ide/. Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 13 October 2011, 06:25:11 UTC
b2f9452 Merge branch 'btrfs-3.0' of git://github.com/chrismason/linux * 'btrfs-3.0' of git://github.com/chrismason/linux: Btrfs: make sure not to defrag extents past i_size Btrfs: fix recursive auto-defrag 13 October 2011, 06:20:40 UTC
27f20dc sparc: Avoid calling sigprocmask() Use set_current_blocked() instead. Signed-off-by: David S. Miller <davem@davemloft.net> 12 October 2011, 19:27:35 UTC
faddf59 sparc: Use set_current_blocked() As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Cc: Oleg Nesterov <oleg@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> 12 October 2011, 19:25:28 UTC
ae1d48b IPVS netns shutdown/startup dead-lock ip_vs_mutext is used by both netns shutdown code and startup and both implicit uses sk_lock-AF_INET mutex. cleanup CPU-1 startup CPU-2 ip_vs_dst_event() ip_vs_genl_set_cmd() sk_lock-AF_INET __ip_vs_mutex sk_lock-AF_INET __ip_vs_mutex * DEAD LOCK * A new mutex placed in ip_vs netns struct called sync_mutex is added. Comments from Julian and Simon added. This patch has been running for more than 3 month now and it seems to work. Ver. 3 IP_VS_SO_GET_DAEMON in do_ip_vs_get_ctl protected by sync_mutex instead of __ip_vs_mutex as sugested by Julian. Signed-off-by: Hans Schillstrom <hans@schillstrom.com> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> 12 October 2011, 16:32:15 UTC
0030807 xfs: revert to using a kthread for AIL pushing Currently we have a few issues with the way the workqueue code is used to implement AIL pushing: - it accidentally uses the same workqueue as the syncer action, and thus can be prevented from running if there are enough sync actions active in the system. - it doesn't use the HIGHPRI flag to queue at the head of the queue of work items At this point I'm not confident enough in getting all the workqueue flags and tweaks right to provide a perfectly reliable execution context for AIL pushing, which is the most important piece in XFS to make forward progress when the log fills. Revert back to use a kthread per filesystem which fixes all the above issues at the cost of having a task struct and stack around for each mounted filesystem. In addition this also gives us much better ways to diagnose any issues involving hung AIL pushing and removes a small amount of code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Stefan Priebe <s.priebe@profihost.ag> Tested-by: Stefan Priebe <s.priebe@profihost.ag> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com> 11 October 2011, 16:02:49 UTC
17b3847 xfs: force the log if we encounter pinned buffers in .iop_pushbuf We need to check for pinned buffers even in .iop_pushbuf given that inode items flush into the same buffers that may be pinned directly due operations on the unlinked inode list operating directly on buffers. To do this add a return value to .iop_pushbuf that tells the AIL push about this and use the existing log force mechanisms to unpin it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Stefan Priebe <s.priebe@profihost.ag> Tested-by: Stefan Priebe <s.priebe@profihost.ag> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com> 11 October 2011, 16:02:48 UTC
bc6e588 xfs: do not update xa_last_pushed_lsn for locked items If an item was locked we should not update xa_last_pushed_lsn and thus skip it when restarting the AIL scan as we need to be able to lock and write it out as soon as possible. Otherwise heavy lock contention might starve AIL pushing too easily, especially given the larger backoff once we moved xa_last_pushed_lsn all the way to the target lsn. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Stefan Priebe <s.priebe@profihost.ag> Tested-by: Stefan Priebe <s.priebe@profihost.ag> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com> 11 October 2011, 16:02:48 UTC
f7f43cc Btrfs: make sure not to defrag extents past i_size The btrfs file defrag code will loop through the extents and force COW on them. But there is a concurrent truncate in the middle of the defrag, it might end up defragging the same range over and over again. The problem is that writepage won't go through and do anything on pages past i_size, so the cow won't happen, so the file will appear to still be fragmented. defrag will end up hitting the same extents again and again. In the worst case, the truncate can actually live lock with the defrag because the defrag keeps creating new ordered extents which the truncate code keeps waiting on. The fix here is to make defrag check for i_size inside the main loop, instead of just once before the looping starts. Signed-off-by: Chris Mason <chris.mason@oracle.com> 11 October 2011, 15:45:55 UTC
2b66685 x86: Default to vsyscall=native for now This UML breakage: linux-2.6.30.1[3800] vsyscall fault (exploit attempt?) ip:ffffffffff600000 cs:33 sp:7fbfb9c498 ax:ffffffffff600000 si:0 di:606790 linux-2.6.30.1[3856] vsyscall fault (exploit attempt?) ip:ffffffffff600000 cs:33 sp:7fbfb13168 ax:ffffffffff600000 si:0 di:606790 Is caused by commit 3ae36655 ("x86-64: Rework vsyscall emulation and add vsyscall= parameter") - the vsyscall emulation code is not fully cooked yet as UML relies on some rather fragile SIGSEGV semantics. Linus suggested in https://lkml.org/lkml/2011/8/9/376 to default to vsyscall=native for now, this patch implements that. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Andrew Lutomirski <luto@mit.edu> Cc: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/20111005214047.GE14406@localhost.pp.htv.fi Signed-off-by: Ingo Molnar <mingo@elte.hu> 11 October 2011, 06:23:34 UTC
3e7abe2 intel-iommu: Fix AB-BA lockdep report When unbinding a device so that I could pass it through to a KVM VM, I got the lockdep report below. It looks like a legitimate lock ordering problem: - domain_context_mapping_one() takes iommu->lock and calls iommu_support_dev_iotlb(), which takes device_domain_lock (inside iommu->lock). - domain_remove_one_dev_info() starts by taking device_domain_lock then takes iommu->lock inside it (near the end of the function). So this is the classic AB-BA deadlock. It looks like a safe fix is to simply release device_domain_lock a bit earlier, since as far as I can tell, it doesn't protect any of the stuff accessed at the end of domain_remove_one_dev_info() anyway. BTW, the use of device_domain_lock looks a bit unsafe to me... it's at least not obvious to me why we aren't vulnerable to the race below: iommu_support_dev_iotlb() domain_remove_dev_info() lock device_domain_lock find info unlock device_domain_lock lock device_domain_lock find same info unlock device_domain_lock free_devinfo_mem(info) do stuff with info after it's free However I don't understand the locking here well enough to know if this is a real problem, let alone what the best fix is. Anyway here's the full lockdep output that prompted all of this: ======================================================= [ INFO: possible circular locking dependency detected ] 2.6.39.1+ #1 ------------------------------------------------------- bash/13954 is trying to acquire lock: (&(&iommu->lock)->rlock){......}, at: [<ffffffff812f6421>] domain_remove_one_dev_info+0x121/0x230 but task is already holding lock: (device_domain_lock){-.-...}, at: [<ffffffff812f6508>] domain_remove_one_dev_info+0x208/0x230 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (device_domain_lock){-.-...}: [<ffffffff8109ca9d>] lock_acquire+0x9d/0x130 [<ffffffff81571475>] _raw_spin_lock_irqsave+0x55/0xa0 [<ffffffff812f8350>] domain_context_mapping_one+0x600/0x750 [<ffffffff812f84df>] domain_context_mapping+0x3f/0x120 [<ffffffff812f9175>] iommu_prepare_identity_map+0x1c5/0x1e0 [<ffffffff81ccf1ca>] intel_iommu_init+0x88e/0xb5e [<ffffffff81cab204>] pci_iommu_init+0x16/0x41 [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff81ca3d3f>] kernel_init+0xe3/0x168 [<ffffffff8157ac24>] kernel_thread_helper+0x4/0x10 -> #0 (&(&iommu->lock)->rlock){......}: [<ffffffff8109bf3e>] __lock_acquire+0x195e/0x1e10 [<ffffffff8109ca9d>] lock_acquire+0x9d/0x130 [<ffffffff81571475>] _raw_spin_lock_irqsave+0x55/0xa0 [<ffffffff812f6421>] domain_remove_one_dev_info+0x121/0x230 [<ffffffff812f8b42>] device_notifier+0x72/0x90 [<ffffffff8157555c>] notifier_call_chain+0x8c/0xc0 [<ffffffff81089768>] __blocking_notifier_call_chain+0x78/0xb0 [<ffffffff810897b6>] blocking_notifier_call_chain+0x16/0x20 [<ffffffff81373a5c>] __device_release_driver+0xbc/0xe0 [<ffffffff81373ccf>] device_release_driver+0x2f/0x50 [<ffffffff81372ee3>] driver_unbind+0xa3/0xc0 [<ffffffff813724ac>] drv_attr_store+0x2c/0x30 [<ffffffff811e4506>] sysfs_write_file+0xe6/0x170 [<ffffffff8117569e>] vfs_write+0xce/0x190 [<ffffffff811759e4>] sys_write+0x54/0xa0 [<ffffffff81579a82>] system_call_fastpath+0x16/0x1b other info that might help us debug this: 6 locks held by bash/13954: #0: (&buffer->mutex){+.+.+.}, at: [<ffffffff811e4464>] sysfs_write_file+0x44/0x170 #1: (s_active#3){++++.+}, at: [<ffffffff811e44ed>] sysfs_write_file+0xcd/0x170 #2: (&__lockdep_no_validate__){+.+.+.}, at: [<ffffffff81372edb>] driver_unbind+0x9b/0xc0 #3: (&__lockdep_no_validate__){+.+.+.}, at: [<ffffffff81373cc7>] device_release_driver+0x27/0x50 #4: (&(&priv->bus_notifier)->rwsem){.+.+.+}, at: [<ffffffff8108974f>] __blocking_notifier_call_chain+0x5f/0xb0 #5: (device_domain_lock){-.-...}, at: [<ffffffff812f6508>] domain_remove_one_dev_info+0x208/0x230 stack backtrace: Pid: 13954, comm: bash Not tainted 2.6.39.1+ #1 Call Trace: [<ffffffff810993a7>] print_circular_bug+0xf7/0x100 [<ffffffff8109bf3e>] __lock_acquire+0x195e/0x1e10 [<ffffffff810972bd>] ? trace_hardirqs_off+0xd/0x10 [<ffffffff8109d57d>] ? trace_hardirqs_on_caller+0x13d/0x180 [<ffffffff8109ca9d>] lock_acquire+0x9d/0x130 [<ffffffff812f6421>] ? domain_remove_one_dev_info+0x121/0x230 [<ffffffff81571475>] _raw_spin_lock_irqsave+0x55/0xa0 [<ffffffff812f6421>] ? domain_remove_one_dev_info+0x121/0x230 [<ffffffff810972bd>] ? trace_hardirqs_off+0xd/0x10 [<ffffffff812f6421>] domain_remove_one_dev_info+0x121/0x230 [<ffffffff812f8b42>] device_notifier+0x72/0x90 [<ffffffff8157555c>] notifier_call_chain+0x8c/0xc0 [<ffffffff81089768>] __blocking_notifier_call_chain+0x78/0xb0 [<ffffffff810897b6>] blocking_notifier_call_chain+0x16/0x20 [<ffffffff81373a5c>] __device_release_driver+0xbc/0xe0 [<ffffffff81373ccf>] device_release_driver+0x2f/0x50 [<ffffffff81372ee3>] driver_unbind+0xa3/0xc0 [<ffffffff813724ac>] drv_attr_store+0x2c/0x30 [<ffffffff811e4506>] sysfs_write_file+0xe6/0x170 [<ffffffff8117569e>] vfs_write+0xce/0x190 [<ffffffff811759e4>] sys_write+0x54/0xa0 [<ffffffff81579a82>] system_call_fastpath+0x16/0x1b Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> 10 October 2011, 21:02:24 UTC
2a0f7f5 Btrfs: fix recursive auto-defrag Follow those steps: # mount -o autodefrag /dev/sda7 /mnt # dd if=/dev/urandom of=/mnt/tmp bs=200K count=1 # sync # dd if=/dev/urandom of=/mnt/tmp bs=8K count=1 conv=notrunc and then it'll go into a loop: writeback -> defrag -> writeback ... It's because writeback writes [8K, 200K] and then writes [0, 8K]. I tried to make writeback know if the pages are dirtied by defrag, but the patch was a bit intrusive. Here I simply set writeback_index when we defrag a file. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com> 10 October 2011, 19:43:34 UTC
a3a4bfd mscan: too much data copied to CAN frame due to 16 bit accesses Due to the 16 bit access to mscan registers there's too much data copied to the zero initialized CAN frame when having an odd number of bytes to copy. This patch ensures that only the requested bytes are copied by using an 8 bit access for the remaining byte. Reported-by: Andre Naujoks <nautsch@gmail.com> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: David S. Miller <davem@davemloft.net> 10 October 2011, 18:31:00 UTC
cdaf557 gro: refetch inet6_protos[] after pulling ext headers ipv6_gro_receive() doesn't update the protocol ops after pulling the ext headers. It looks like a typo. Signed-off-by: Zheng Yan <zheng.z.yan@intel.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 10 October 2011, 18:26:16 UTC
134d0f9 bnx2x: fix cl_id allocation for non-eth clients for NPAR mode There are some consolidations of NPAR configuration when FCoE and iSCSI L2 clients will get the same id, in this case FCoE ring will be non-functional. Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> 10 October 2011, 18:21:26 UTC
c5d6136 mlx4_en: fix endianness with blue frame support The doorbell register was being unconditionally swapped. In x86, that meant it was being swapped to BE and written to the descriptor and to memory, depending on the case of blue frame support or writing to doorbell register. On PPC, this meant it was being swapped to LE and then swapped back to BE while writing to the register. But in the blue frame case, it was being written as LE to the descriptor. The fix is not to swap doorbell unconditionally, write it to the register as BE and convert it to BE when writing it to the descriptor. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Reported-by: Richard Hendrickson <richhend@us.ibm.com> Cc: Eli Cohen <eli@dev.mellanox.co.il> Cc: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net> 10 October 2011, 18:10:37 UTC
65112dc Merge git://git.samba.org/sfrench/cifs-2.6 * git://git.samba.org/sfrench/cifs-2.6: [CIFS] Fix first time message on mount, ntlmv2 upgrade delayed to 3.2 10 October 2011, 02:53:11 UTC
bbf5e97 Merge branch 'fixes' of git://git.linaro.org/people/arnd/arm-soc * 'fixes' of git://git.linaro.org/people/arnd/arm-soc: ARM: mach-ux500: enable fix for ARM errata 754322 ARM: OMAP: musb: Remove a redundant omap4430_phy_init call in usb_musb_init ARM: OMAP: Fix i2c init for twl4030 ARM: OMAP4: MMC: fix power and audio issue, decouple USBC1 from MMC1 10 October 2011, 02:48:27 UTC
3faf12c ARM: tegra: fix compilation error due to mach/hardware.h removal This fixes a compilation error in cpu-tegra.c which was introduced in dc8d966bccde ("ARM: convert PCI defines to variables") which removed the now obsolete mach/hardware.h from the mach-tegra subtree. Signed-off-by: Marc Dietrich <marvin24@gmx.de> Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 10 October 2011, 02:46:25 UTC
84c8611 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon/kms: use hardcoded dig encoder to transmitter mapping for DCE4.1 drm/radeon/kms: fix dp_detect handling for DP bridge chips drm/radeon/kms: retry aux transactions if there are status flags 10 October 2011, 02:43:06 UTC
746fb63 MAINTAINERS: Update tegra maintainer information A couple of changes to the Tegra maintainership setup: I'm very glad to bring on Stephen Warren on board as a maintainer. The work he has done so far is excellent, and the fact that he works for Nvidia means he has long-term interest in the platform. Erik Gilling did an astounding amount of work on getting things up and running but has been a silent partner on the maintainership side for a while, and is stepping down. Thanks for your contributions so far, Erik. Finally, update the git URL since I'll take over running the main repo for a while. Overall maintainership model isn't changing much at this time: We'll all three review patches as appropriate, and one of us will collect the main repo (me at this time). Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Erik Gilling <konkers@android.com> Acked-by: Colin Cross <ccross@android.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 10 October 2011, 02:42:22 UTC
a24d025 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus * 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (29 commits) MIPS: Call oops_enter, oops_exit in die staging/octeon: Software should check the checksum of no tcp/udp packets MIPS: Octeon: Enable C0_UserLocal probing. MIPS: No branches in delay slots for huge pages in handle_tlbl MIPS: Don't clobber CP0_STATUS value for CONFIG_MIPS_MT_SMTC MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2) MIPS: Compat: Use 32-bit wrapper for compat_sys_futex. MIPS: Do not use EXTRA_CFLAGS MIPS: Alchemy: DB1200: Disable cascade IRQ in handler SERIAL: Lantiq: Set timeout in uart_port MIPS: Lantiq: Fix setting the PCI bus speed on AR9 MIPS: Lantiq: Fix external interrupt sources MIPS: tlbex: Fix build error in R3000 code. MIPS: Alchemy: Include Au1100 in PM code. MIPS: Alchemy: Fix typo in MAC0 registration MIPS: MSP71xx: Fix build error. MIPS: Handle __put_user() sleeping. MIPS: Allow forced irq threading MIPS: i8259: Mark cascade interrupt non-threaded ... 10 October 2011, 02:39:03 UTC
aab3a70 Merge branch 'omap/fixes-for-3.1' into fixes 08 October 2011, 20:21:07 UTC
9d1e397 [CIFS] Fix first time message on mount, ntlmv2 upgrade delayed to 3.2 Microsoft has a bug with ntlmv2 that requires use of ntlmssp, but we didn't get the required information on when/how to use ntlmssp to old (but once very popular) legacy servers (various NT4 fixpacks for example) until too late to merge for 3.1. Will upgrade to NTLMv2 in NTLMSSP in 3.2 Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> 08 October 2011, 01:17:56 UTC
f22ed71 sparc32,leon: SRMMU MMU Table probe fix The LEON MMU Model (SRMMU) does not implement MMu Table probing in hardware, instead it is implemented in software. However the software implementation does not return the PTE as it should which always results in INVALID entires and the PROM mappings are not inherited as they should during startup. The following patch removes the masking of the PTE. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net> 07 October 2011, 19:08:01 UTC
98e87d5 ARM: mach-ux500: enable fix for ARM errata 754322 This applies ARM errata fix 754322 for all ux500 platforms. Cc: stable@kernel.org Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> 07 October 2011, 15:38:35 UTC
3ee72ca Merge git://github.com/davem330/net * git://github.com/davem330/net: net: fix typos in Documentation/networking/scaling.txt bridge: leave carrier on for empty bridge netfilter: Use proper rwlock init function tcp: properly update lost_cnt_hint during shifting tcp: properly handle md5sig_pool references macvlan/macvtap: Fix unicast between macvtap interfaces in bridge mode 06 October 2011, 23:15:10 UTC
29cf7a3 x86/PCI: use host bridge _CRS info on ASUS M2V-MX SE In summary, this DMI quirk uses the _CRS info by default for the ASUS M2V-MX SE by turning on `pci=use_crs` and is similar to the quirk added by commit 2491762cfb47 ("x86/PCI: use host bridge _CRS info on ASRock ALiveSATA2-GLAN") whose commit message should be read for further information. Since commit 3e3da00c01d0 ("x86/pci: AMD one chain system to use pci read out res") Linux gives the following oops: parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE] HDA Intel 0000:20:01.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 HDA Intel 0000:20:01.0: setting latency timer to 64 BUG: unable to handle kernel paging request at ffffc90011c08000 IP: [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel] PGD 13781a067 PUD 13781b067 PMD 1300ba067 PTE 800000fd00000173 Oops: 0009 [#1] SMP last sysfs file: /sys/module/snd_pcm/initstate CPU 0 Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event tpm_tis tpm snd_seq tpm_bios psmouse parport_pc snd_timer snd_seq_device parport processor evdev snd i2c_viapro thermal_sys amd64_edac_mod k8temp i2c_core soundcore shpchp pcspkr serio_raw asus_atk0110 pci_hotplug edac_core button snd_page_alloc edac_mce_amd ext3 jbd mbcache sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod raid1 md_mod usbhid hid sg sd_mod crc_t10dif sr_mod cdrom ata_generic uhci_hcd sata_via pata_via libata ehci_hcd usbcore scsi_mod via_rhine mii nls_base [last unloaded: scsi_wait_scan] Pid: 1153, comm: work_for_cpu Not tainted 2.6.37-1-amd64 #1 M2V-MX SE/System Product Name RIP: 0010:[<ffffffffa0578402>] [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel] RSP: 0018:ffff88013153fe50 EFLAGS: 00010286 RAX: ffffc90011c08000 RBX: ffff88013029ec00 RCX: 0000000000000006 RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 RBP: ffff88013341d000 R08: 0000000000000000 R09: 0000000000000040 R10: 0000000000000286 R11: 0000000000003731 R12: ffff88013029c400 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88013341d090 FS: 0000000000000000(0000) GS:ffff8800bfc00000(0000) knlGS:00000000f7610ab0 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffc90011c08000 CR3: 0000000132f57000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process work_for_cpu (pid: 1153, threadinfo ffff88013153e000, task ffff8801303c86c0) Stack: 0000000000000005 ffffffff8123ad65 00000000000136c0 ffff88013029c400 ffff8801303c8998 ffff88013341d000 ffff88013341d090 ffff8801322d9dc8 ffff88013341d208 0000000000000000 0000000000000000 ffffffff811ad232 Call Trace: [<ffffffff8123ad65>] ? __pm_runtime_set_status+0x162/0x186 [<ffffffff811ad232>] ? local_pci_probe+0x49/0x92 [<ffffffff8105afc5>] ? do_work_for_cpu+0x0/0x1b [<ffffffff8105afc5>] ? do_work_for_cpu+0x0/0x1b [<ffffffff8105afd0>] ? do_work_for_cpu+0xb/0x1b [<ffffffff8105fd3f>] ? kthread+0x7a/0x82 [<ffffffff8100a824>] ? kernel_thread_helper+0x4/0x10 [<ffffffff8105fcc5>] ? kthread+0x0/0x82 [<ffffffff8100a820>] ? kernel_thread_helper+0x0/0x10 Code: f4 01 00 00 ef 31 f6 48 89 df e8 29 dd ff ff 85 c0 0f 88 2b 03 00 00 48 89 ef e8 b4 39 c3 e0 8b 7b 40 e8 fc 9d b1 e0 48 8b 43 38 <66> 8b 10 66 89 14 24 8b 43 14 83 e8 03 83 f8 01 77 32 31 d2 be RIP [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel] RSP <ffff88013153fe50> CR2: ffffc90011c08000 ---[ end trace 8d1f3ebc136437fd ]--- Trusting the ACPI _CRS information (`pci=use_crs`) fixes this problem. $ dmesg | grep -i crs # with the quirk PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug The match has to be against the DMI board entries though since the vendor entries are not populated. DMI: System manufacturer System Product Name/M2V-MX SE, BIOS 0304 10/30/2007 This quirk should be removed when `pci=use_crs` is enabled for machines from 2006 or earlier or some other solution is implemented. Using coreboot [1] with this board the problem does not exist but this quirk also does not affect it either. To be safe though the check is tightened to only take effect when the BIOS from American Megatrends is used. 15:13 < ruik> but coreboot does not need that 15:13 < ruik> because i have there only one root bus 15:13 < ruik> the audio is behind a bridge $ sudo dmidecode BIOS Information Vendor: American Megatrends Inc. Version: 0304 Release Date: 10/30/2007 [1] http://www.coreboot.org/ Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=30552 Cc: stable@kernel.org (2.6.34) Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: x86@kernel.org Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 06 October 2011, 23:10:37 UTC
186c6bb net: fix typos in Documentation/networking/scaling.txt The second hunk fixes rps_sock_flow_table but has to re-wrap the paragraph. Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 06 October 2011, 19:58:24 UTC
b64b73d bridge: leave carrier on for empty bridge This resolves a regression seen by some users of bridging. Some users use the bridge like a dummy device. They expect to be able to put an IPv6 address on the device with no ports attached. Although there are better ways of doing this, there is no reason to not allow it. Note: the bridge still will reflect the state of ports in the bridge if there are any added. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net> 06 October 2011, 19:26:50 UTC
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