linux_dsm_epyc7002/drivers/block
Weijie Yang c406515239 zram: avoid kunmap_atomic() of a NULL pointer
zram could kunmap_atomic() a NULL pointer in a rare situation: a zram
page becomes a full-zeroed page after a partial write io.  The current
code doesn't handle this case and performs kunmap_atomic() on a NULL
pointer, which panics the kernel.

This patch fixes this issue.

Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Weijie Yang <weijie.yang.kh@gmail.com>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-11-13 16:17:05 -08:00
..
aoe
drbd drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks 2014-09-18 09:00:17 -06:00
mtip32xx Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block 2014-10-18 12:12:45 -07:00
paride Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block 2014-10-18 11:53:51 -07:00
rsxx Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block 2014-10-18 12:12:45 -07:00
xen-blkback Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block 2014-10-18 12:12:45 -07:00
zram zram: avoid kunmap_atomic() of a NULL pointer 2014-11-13 16:17:05 -08:00
amiflop.c
ataflop.c
brd.c brd: add ram disk visibility option 2014-08-21 20:42:01 -05:00
cciss_cmd.h
cciss_scsi.c
cciss_scsi.h
cciss.c block: use pci_zalloc_consistent 2014-08-08 15:57:28 -07:00
cciss.h
cpqarray.c
cpqarray.h
cryptoloop.c
DAC960.c block: use pci_zalloc_consistent 2014-08-08 15:57:28 -07:00
DAC960.h
floppy.c
hd.c block: hd: remove deprecated IRQF_DISABLED 2014-10-01 08:16:07 -06:00
ida_cmd.h
ida_ioctl.h
Kconfig
loop.c
loop.h
Makefile
mg_disk.c
nbd.c block: disable entropy contributions for nonrot devices 2014-10-04 10:55:32 -06:00
null_blk.c null_blk: Cleanup error recovery in null_add_dev() 2014-10-22 07:59:25 -06:00
nvme-core.c block: disable entropy contributions for nonrot devices 2014-10-04 10:55:32 -06:00
nvme-scsi.c
osdblk.c
pktcdvd.c block,scsi: fixup blk_get_request dead queue scenarios 2014-08-28 10:03:46 -06:00
ps3disk.c
ps3vram.c
rbd_types.h
rbd.c rbd: Fix error recovery in rbd_obj_read_sync() 2014-10-30 13:11:51 +03:00
skd_main.c block: disable entropy contributions for nonrot devices 2014-10-04 10:55:32 -06:00
skd_s1120.h
smart1,2.h
sunvdc.c sunvdc: don't call VD_OP_GET_VTOC 2014-10-31 15:49:45 -04:00
swim3.c
swim_asm.S
swim.c
sx8.c block,scsi: fixup blk_get_request dead queue scenarios 2014-08-28 10:03:46 -06:00
umem.c
umem.h
virtio_blk.c Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block 2014-10-18 11:53:51 -07:00
xen-blkfront.c Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block 2014-10-18 12:12:45 -07:00
xsysace.c block: systemace: Remove .owner field for driver 2014-08-21 20:37:54 -05:00
z2ram.c