AuxXxilium/linux_dsm_epyc7002
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1addb798e9
linux_dsm_epyc7002/drivers/block
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David Disseldorp 1addb798e9 null_blk: fix dev->badblocks leak 
null_alloc_dev() allocates memory for dev->badblocks, but cleanup
currently only occurs in the configfs release codepath, missing a number
of other places.

This bug was found running the blktests block/010 test, alongside
kmemleak:
rapido1:/blktests# ./check block/010
...
rapido1:/blktests# echo scan > /sys/kernel/debug/kmemleak
[  306.966708] kmemleak: 32 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
rapido1:/blktests# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff88001f86d000 (size 4096):
  comm "modprobe", pid 231, jiffies 4294892415 (age 318.252s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814b0379>] kmemleak_alloc+0x49/0xa0
    [<ffffffff810f180f>] kmem_cache_alloc+0x9f/0xe0
    [<ffffffff8124e45f>] badblocks_init+0x2f/0x60
    [<ffffffffa0019fae>] 0xffffffffa0019fae
    [<ffffffffa0021273>] nullb_device_badblocks_store+0x63/0x130 [null_blk]
    [<ffffffff810004cd>] do_one_initcall+0x3d/0x170
    [<ffffffff8109fe0d>] do_init_module+0x56/0x1e9
    [<ffffffff8109ebd7>] load_module+0x1c47/0x26a0
    [<ffffffff8109f819>] SyS_finit_module+0xa9/0xd0
    [<ffffffff814b4f60>] entry_SYSCALL_64_fastpath+0x13/0x94

Fixes: 2f54a613c9 ("nullb: badbblocks support")
Reviewed-by: Shaohua Li <shli@fb.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-22 08:43:11 -07:00
..
aoe block/aoe: Convert timers to use timer_setup() 2017-11-14 20:11:57 -07:00
drbd Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
mtip32xx Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
paride Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
rsxx block: pass in queue to inflight accounting 2017-08-09 13:09:16 -06:00
xen-blkback Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block 2017-09-07 11:59:42 -07:00
zram drivers/block/zram/zram_drv.c: make zram_page_end_io() static 2017-11-15 18:21:05 -08:00
amiflop.c amifloppy: Convert timers to use timer_setup() 2017-11-14 20:11:57 -07:00
ataflop.c timer: Remove expires and data arguments from DEFINE_TIMER 2017-10-05 15:01:20 +02:00
brd.c libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
cryptoloop.c block: cryptoloop - Fix build warning 2017-09-26 07:41:22 -06:00
DAC960.c block: DAC960: shut up format-overflow warning 2017-07-29 09:00:03 -06:00
DAC960.h
floppy.c block/floppy: Convert callback to pass timer_list 2017-11-14 20:10:35 -07:00
Kconfig libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
loop.c block: fix a build error 2017-09-26 12:07:24 -06:00
loop.h block/loop: make loop cgroup aware 2017-09-26 07:41:22 -06:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nbd.c Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
null_blk.c null_blk: fix dev->badblocks leak 2017-11-22 08:43:11 -07:00
pktcdvd.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
ps3disk.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00
ps3vram.c block/ps3vram: Check return of ps3vram_cache_init 2017-08-17 23:03:44 +10:00
rbd_types.h rbd: RBD_V{1,2}_DATA_FORMAT macros 2017-02-20 12:16:15 +01:00
rbd.c rbd: use GFP_NOIO for parent stat and data requests 2017-11-09 09:32:53 +01:00
skd_main.c Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
skd_s1120.h skd: Use __packed only when needed 2017-08-18 08:45:29 -06:00
smart1,2.h fix typos 'comamnd' -> 'command' in comments 2011-02-02 11:31:21 +01:00
sunvdc.c sunvdc: prevent sunvdc panic when mpgroup disk added to guest domain 2017-08-09 22:22:32 -07:00
swim3.c block: swim3: Convert timers to use timer_setup() 2017-11-14 20:11:57 -07:00
swim_asm.S m68k: mac - Add SWIM floppy support 2009-03-26 21:15:27 +01:00
swim.c block: don't set bounce limit in blk_init_queue 2017-06-27 12:13:45 -06:00
sx8.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00
umem.c blk: remove bio_set arg from blk_queue_split() 2017-06-18 12:40:59 -06:00
umem.h
virtio_blk.c virtio_blk: Fix an SG_IO regression 2017-10-27 08:23:21 -06:00
xen-blkfront.c Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block 2017-09-07 11:59:42 -07:00
xsysace.c block: don't set bounce limit in blk_init_queue 2017-06-27 12:13:45 -06:00
z2ram.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00