https://github.com/torvalds/linux
Revision 347e2233b7667e336d9f671f1a52dfa3f0416e2c authored by Trond Myklebust on 28 August 2013, 17:35:13 UTC, committed by Trond Myklebust on 28 August 2013, 19:43:43 UTC
Some architectures, such as ARM-32 do not return the same base address when you call kmap_atomic() twice on the same page. This causes problems for the memmove() call in the XDR helper routine "_shift_data_right_pages()", since it defeats the detection of overlapping memory ranges, and has been seen to corrupt memory. The fix is to distinguish between the case where we're doing an inter-page copy or not. In the former case of we know that the memory ranges cannot possibly overlap, so we can additionally micro-optimise by replacing memmove() with memcpy(). Reported-by: Mark Young <MYoung@nvidia.com> Reported-by: Matt Craighead <mcraighead@nvidia.com> Cc: Bruce Fields <bfields@fieldses.org> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Matt Craighead <mcraighead@nvidia.com>
1 parent fa8218d
Tip revision: 347e2233b7667e336d9f671f1a52dfa3f0416e2c authored by Trond Myklebust on 28 August 2013, 17:35:13 UTC
SUNRPC: Fix memory corruption issue on 32-bit highmem systems
SUNRPC: Fix memory corruption issue on 32-bit highmem systems
Tip revision: 347e223
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 28.8 KB |
| Makefile | -rw-r--r-- | 3.9 KB |
| aec62xx.c | -rw-r--r-- | 9.2 KB |
| ali14xx.c | -rw-r--r-- | 6.5 KB |
| alim15x3.c | -rw-r--r-- | 14.9 KB |
| amd74xx.c | -rw-r--r-- | 10.0 KB |
| atiixp.c | -rw-r--r-- | 5.5 KB |
| au1xxx-ide.c | -rw-r--r-- | 15.2 KB |
| buddha.c | -rw-r--r-- | 5.6 KB |
| cmd640.c | -rw-r--r-- | 22.4 KB |
| cmd64x.c | -rw-r--r-- | 12.0 KB |
| cs5520.c | -rw-r--r-- | 4.7 KB |
| cs5530.c | -rw-r--r-- | 8.1 KB |
| cs5535.c | -rw-r--r-- | 6.2 KB |
| cs5536.c | -rw-r--r-- | 7.7 KB |
| cy82c693.c | -rw-r--r-- | 6.3 KB |
| delkin_cb.c | -rw-r--r-- | 4.4 KB |
| dtc2278.c | -rw-r--r-- | 3.8 KB |
| falconide.c | -rw-r--r-- | 3.9 KB |
| gayle.c | -rw-r--r-- | 4.4 KB |
| hpt366.c | -rw-r--r-- | 41.9 KB |
| ht6560b.c | -rw-r--r-- | 10.4 KB |
| icside.c | -rw-r--r-- | 16.2 KB |
| ide-4drives.c | -rw-r--r-- | 1.5 KB |
| ide-acpi.c | -rw-r--r-- | 16.2 KB |
| ide-atapi.c | -rw-r--r-- | 17.7 KB |
| ide-cd.c | -rw-r--r-- | 45.9 KB |
| ide-cd.h | -rw-r--r-- | 3.5 KB |
| ide-cd_ioctl.c | -rw-r--r-- | 11.5 KB |
| ide-cd_verbose.c | -rw-r--r-- | 13.5 KB |
| ide-cs.c | -rw-r--r-- | 12.0 KB |
| ide-devsets.c | -rw-r--r-- | 3.8 KB |
| ide-disk.c | -rw-r--r-- | 19.3 KB |
| ide-disk.h | -rw-r--r-- | 666 bytes |
| ide-disk_ioctl.c | -rw-r--r-- | 957 bytes |
| ide-disk_proc.c | -rw-r--r-- | 4.6 KB |
| ide-dma-sff.c | -rw-r--r-- | 8.9 KB |
| ide-dma.c | -rw-r--r-- | 13.2 KB |
| ide-eh.c | -rw-r--r-- | 12.1 KB |
| ide-floppy.c | -rw-r--r-- | 14.4 KB |
| ide-floppy.h | -rw-r--r-- | 1.1 KB |
| ide-floppy_ioctl.c | -rw-r--r-- | 7.2 KB |
| ide-floppy_proc.c | -rw-r--r-- | 1.2 KB |
| ide-gd.c | -rw-r--r-- | 10.8 KB |
| ide-gd.h | -rw-r--r-- | 932 bytes |
| ide-generic.c | -rw-r--r-- | 3.9 KB |
| ide-h8300.c | -rw-r--r-- | 2.4 KB |
| ide-io-std.c | -rw-r--r-- | 6.4 KB |
| ide-io.c | -rw-r--r-- | 23.6 KB |
| ide-ioctls.c | -rw-r--r-- | 6.7 KB |
| ide-iops.c | -rw-r--r-- | 13.5 KB |
| ide-legacy.c | -rw-r--r-- | 1.3 KB |
| ide-lib.c | -rw-r--r-- | 4.4 KB |
| ide-park.c | -rw-r--r-- | 3.4 KB |
| ide-pci-generic.c | -rw-r--r-- | 6.0 KB |
| ide-pio-blacklist.c | -rw-r--r-- | 2.3 KB |
| ide-pm.c | -rw-r--r-- | 6.5 KB |
| ide-pnp.c | -rw-r--r-- | 2.6 KB |
| ide-probe.c | -rw-r--r-- | 37.4 KB |
| ide-proc.c | -rw-r--r-- | 19.3 KB |
| ide-scan-pci.c | -rw-r--r-- | 2.7 KB |
| ide-sysfs.c | -rw-r--r-- | 2.8 KB |
| ide-tape.c | -rw-r--r-- | 55.1 KB |
| ide-taskfile.c | -rw-r--r-- | 16.6 KB |
| ide-timings.c | -rw-r--r-- | 6.5 KB |
| ide-xfer-mode.c | -rw-r--r-- | 6.7 KB |
| ide.c | -rw-r--r-- | 10.4 KB |
| ide_platform.c | -rw-r--r-- | 3.5 KB |
| it8172.c | -rw-r--r-- | 5.1 KB |
| it8213.c | -rw-r--r-- | 5.5 KB |
| it821x.c | -rw-r--r-- | 20.4 KB |
| jmicron.c | -rw-r--r-- | 4.5 KB |
| macide.c | -rw-r--r-- | 3.0 KB |
| ns87415.c | -rw-r--r-- | 8.9 KB |
| opti621.c | -rw-r--r-- | 4.5 KB |
| palm_bk3710.c | -rw-r--r-- | 10.6 KB |
| pdc202xx_new.c | -rw-r--r-- | 14.5 KB |
| pdc202xx_old.c | -rw-r--r-- | 10.1 KB |
| piix.c | -rw-r--r-- | 14.0 KB |
| pmac.c | -rw-r--r-- | 45.7 KB |
| q40ide.c | -rw-r--r-- | 4.1 KB |
| qd65xx.c | -rw-r--r-- | 10.9 KB |
| qd65xx.h | -rw-r--r-- | 5.8 KB |
| rapide.c | -rw-r--r-- | 2.0 KB |
| rz1000.c | -rw-r--r-- | 2.3 KB |
| sc1200.c | -rw-r--r-- | 9.2 KB |
| scc_pata.c | -rw-r--r-- | 21.9 KB |
| serverworks.c | -rw-r--r-- | 12.6 KB |
| setup-pci.c | -rw-r--r-- | 16.6 KB |
| sgiioc4.c | -rw-r--r-- | 16.8 KB |
| siimage.c | -rw-r--r-- | 20.9 KB |
| sis5513.c | -rw-r--r-- | 18.1 KB |
| sl82c105.c | -rw-r--r-- | 9.4 KB |
| slc90e66.c | -rw-r--r-- | 4.8 KB |
| tc86c001.c | -rw-r--r-- | 7.5 KB |
| triflex.c | -rw-r--r-- | 3.8 KB |
| trm290.c | -rw-r--r-- | 10.8 KB |
| tx4938ide.c | -rw-r--r-- | 5.5 KB |
| tx4939ide.c | -rw-r--r-- | 17.1 KB |
| umc8672.c | -rw-r--r-- | 5.0 KB |
| via82cxxx.c | -rw-r--r-- | 14.7 KB |
Computing file changes ...
