Jérôme Glisse e153abc073 zram: pass down the bvec we need to read into in the work struct ...

When scheduling work item to read page we need to pass down the proper
bvec struct which points to the page to read into.  Before this patch it
uses a randomly initialized bvec (only if PAGE_SIZE != 4096) which is
wrong.

Note that without this patch on arch/kernel where PAGE_SIZE != 4096
userspace could read random memory through a zram block device (thought
userspace probably would have no control on the address being read).

Link: http://lkml.kernel.org/r/20190408183219.26377-1-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2019-04-26 09:18:05 -07:00

..

aoe

aoe: add __exit annotation

2018-12-16 09:01:38 -07:00

drbd

Merge tag 'for-4.21/block-20190102' of git://git.kernel.dk/linux-block

2019-01-02 18:49:58 -08:00

mtip32xx

Merge tag 'for-5.1/block-20190302' of git://git.kernel.dk/linux-block

2019-03-08 14:12:17 -08:00

paride

paride/pcd: Fix potential NULL pointer dereference and mem leak

2019-04-05 09:24:34 -06:00

rsxx

Merge tag 'pci-v4.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2018-10-25 06:50:48 -07:00

xen-blkback

xen/blkback: rework connect_ring() to avoid inconsistent xenstore 'ring-page-order' set by malicious blkfront

2019-02-24 10:17:56 -05:00

zram

zram: pass down the bvec we need to read into in the work struct

2019-04-26 09:18:05 -07:00

amiflop.c

block/amiflop: Don't log error message on invalid ioctl

2018-12-31 10:19:11 -07:00

ataflop.c

ataflop: implement mq_ops->commit_rqs() hook

2018-11-29 10:12:27 -07:00

brd.c

block: brd: associate with queue until adding disk

2018-11-01 19:59:51 -06:00

cryptoloop.c

block: cryptoloop: Remove VLA usage of skcipher

2018-09-28 12:46:07 +08:00

floppy.c

Merge tag 'for-5.1/block-20190302' of git://git.kernel.dk/linux-block

2019-03-08 14:12:17 -08:00

Kconfig

drivers/block: Remove DAC960 driver

2018-10-17 09:42:30 -06:00

loop.c

loop: access lo_backing_file only when the loop device is Lo_bound

2019-03-18 08:20:53 -06:00

loop.h

block/loop: Use global lock for ioctl() operation.

2018-11-08 06:30:11 -07:00

Makefile

drivers/block: Remove DAC960 driver

2018-10-17 09:42:30 -06:00

nbd.c

nbd: propagate genlmsg_reply return code

2019-02-28 14:06:37 -07:00

null_blk_main.c

null_blk: prevent crash from bad home_node value

2019-04-06 10:51:08 -06:00

null_blk_zoned.c

null_blk: Add conventional zone configuration for zoned support

2018-11-07 13:41:50 -07:00

null_blk.h

null_blk: add zoned config support information

2019-01-06 10:58:27 -07:00

pktcdvd.c

pktcdvd: remove queue_lock around blk_queue_max_hw_sectors

2018-11-16 09:16:59 -07:00

ps3disk.c

ps3disk: convert to blk-mq

2018-10-15 20:07:56 -06:00

ps3vram.c

block: genhd: add 'groups' argument to device_add_disk

2018-09-28 08:30:28 -06:00

rbd_types.h

…

rbd.c

rbd: drop wait_for_latest_osdmap()

2019-03-20 16:27:40 +01:00

skd_main.c

block: kill BLK_MQ_F_SG_MERGE

2019-02-15 08:40:12 -07:00

skd_s1120.h

…

sunvdc.c

block: sunvdc: don't run hw queue synchronously from irq context

2019-01-03 08:21:47 -07:00

swim3.c

block/swim3: Fix regression on PowerBook G3

2018-12-31 10:19:19 -07:00

swim_asm.S

…

swim.c

swim: convert to blk-mq

2018-10-16 09:49:18 -06:00

sx8.c

sx8: use a per-host tag_set

2018-11-09 08:14:14 -07:00

umem.c

block: remove the lock argument to blk_alloc_queue_node

2018-11-15 12:13:35 -07:00

umem.h

…

virtio_blk.c

virtio-blk: limit number of hw queues by nr_cpu_ids

2019-04-10 08:18:24 -06:00

xen-blkfront.c

block: kill BLK_MQ_F_SG_MERGE

2019-02-15 08:40:12 -07:00

xsysace.c

xsysace: Fix error handling in ace_setup

2019-04-06 10:51:12 -06:00

z2ram.c

Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2018-10-26 14:36:21 -07:00