A deep dive to the page allocator is needed to find
out why the warning (not simply regular ENOMEM).
Edward.
On 01/06/2017 05:37 PM, Dušan Čolić wrote:
On Sun, Dec 25, 2016 at 4:32 PM, Dušan Čolić <dusanc@xxxxxxxxx> wrote:
On Sat, Dec 24, 2016 at 9:48 AM, Dušan Čolić <dusanc@xxxxxxxxx> wrote:
On Sun, Dec 18, 2016 at 2:46 PM, Dušan Čolić <dusanc@xxxxxxxxx> wrote:
That was it, no more BUG on mount.
I spoke prematurely.
Looks like I had 2 different BUGs on mount:
1. BUG when mounting partition with old disk format - that was solved
with 4.8.1 patch
2. BUG when mounting dismounted partition - this one is not solved
When I I get this BUG I do:
echo 1 > /proc/sys/vm/drop_caches
and everything works OK again.
With echo 1 > /proc/sys/vm/drop_caches added before mount to scripts
that I run daily on R4 partitions I had no occurence of this bug and
before I had it every day.
When partitions are mounted on boot they mount OK, but when system
finishes booting when I try to mount them I get this BUG:
Dec 24 09:41:21 krshina3 kernel: reiser4: md127: found disk format 4.0.1.
Dec 24 09:41:21 krshina3 kernel: mount: page allocation failure:
order:5, mode:0x26040c0(GFP_KERNEL|__GFP_COMP|__GFP_NOTRACK)
Dec 24 09:41:21 krshina3 kernel: CPU: 0 PID: 3859 Comm: mount Not
tainted 4.8.11-gentoo #5
Dec 24 09:41:21 krshina3 kernel: Hardware name: Gigabyte Technology
Co., Ltd. To be filled by O.E.M./B75-D3V, BIOS F5 07/04/2012
Dec 24 09:41:21 krshina3 kernel: 0000000000400000 ffff88007d0379b0
ffffffff814241c5 0000000000000005
Dec 24 09:41:21 krshina3 kernel: 0000000000000000 ffff88007d037a40
ffffffff811ab42a 026040c07d0379f0
Dec 24 09:41:21 krshina3 kernel: 0000000000000202 0000000000000004
00000040026040c0 ffff88007d037ad0
Dec 24 09:41:21 krshina3 kernel: Call Trace:
Dec 24 09:41:21 krshina3 kernel: [<ffffffff814241c5>] dump_stack+0x4d/0x68
Dec 24 09:41:21 krshina3 kernel: [<ffffffff811ab42a>]
warn_alloc_failed+0xba/0x160
Dec 24 09:41:21 krshina3 kernel: [<ffffffff811aa483>] ?
get_page_from_freelist+0x143/0xcf0
Dec 24 09:41:21 krshina3 kernel: [<ffffffff811ab863>]
__alloc_pages_nodemask+0x2f3/0xd40
Dec 24 09:41:21 krshina3 kernel: [<ffffffff810ca0d8>] ?
kmemcheck_pte_lookup+0x28/0x60
Dec 24 09:41:21 krshina3 kernel: [<ffffffff811fc28d>]
cache_alloc_refill+0xed/0x6a0
Dec 24 09:41:21 krshina3 kernel: [<ffffffff811fc189>]
kmem_cache_alloc+0xf9/0x110
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812a060f>]
znodes_tree_init+0x5f/0x210
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812ac8ee>]
reiser4_init_tree+0x8e/0x150
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81304a55>]
init_format_format40+0x345/0x790
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81229aa4>] ?
unlock_new_inode+0x64/0xa0
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812c4f3a>] fill_super+0x14a/0x300
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812c4df0>] ? reiser4_mount+0x20/0x20
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81233af2>] do_mount+0x1d2/0x1080
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812337f1>] ?
copy_mount_options+0x111/0x220
Dec 24 09:41:21 krshina3 kernel: [<ffffffff812337da>] ?
copy_mount_options+0xfa/0x220
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81234e46>] SyS_mount+0x66/0xb0
Dec 24 09:41:21 krshina3 kernel: [<ffffffff81a5765b>]
entry_SYSCALL_64_fastpath+0x13/0x8f
Dec 24 09:41:21 krshina3 kernel: Mem-Info:
Dec 24 09:41:21 krshina3 kernel: active_anon:453454
inactive_anon:113498 isolated_anon:0\x0a active_file:189238
inactive_file:800785 isolated_file:0\x0a unevictable:1866 dirty:1092
writeback:0 unstable:0\x0a slab_reclaimable:55782
slab_unreclaimable:60397\x0a mapped:20308 shmem:11803 pagetables:2738
bounce:0\x0a free:13271 free_pcp:0 free_cma:0
Dec 24 09:41:21 krshina3 kernel: Node 0 active_anon:1813816kB
inactive_anon:453992kB active_file:756952kB inactive_file:3203140kB
unevictable:7464kB isolated(anon):0kB isolated(file):0kB
mapped:81232kB dirty:4368kB writeback:0kB shmem:47212kB
writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
Dec 24 09:41:21 krshina3 kernel: DMA free:15896kB min:24kB low:36kB
high:48kB active_anon:0kB inactive_anon:0kB active_file:0kB
inactive_file:0kB unevictable:0kB writepending:0kB present:15984kB
managed:15900kB mlocked:0kB slab_reclaimable:0kB
slab_unreclaimable:4kB kernel_stack:0kB pagetables:0kB bounce:0kB
free_pcp:0kB local_pcp:0kB free_cma:0kB
Dec 24 09:41:21 krshina3 kernel: lowmem_reserve[]: 0 3191 6627 6627
Dec 24 09:41:21 krshina3 kernel: DMA32 free:22044kB min:5012kB
low:8280kB high:11548kB active_anon:810196kB inactive_anon:351420kB
active_file:172284kB inactive_file:1693924kB unevictable:0kB
writepending:2036kB present:3360704kB managed:3272764kB mlocked:0kB
slab_reclaimable:85100kB slab_unreclaimable:120576kB
kernel_stack:416kB pagetables:3108kB bounce:0kB free_pcp:0kB
local_pcp:0kB free_cma:0kB
Dec 24 09:41:21 krshina3 kernel: lowmem_reserve[]: 0 0 3435 3435
Dec 24 09:41:21 krshina3 kernel: Normal free:15144kB min:5392kB
low:8908kB high:12424kB active_anon:1003620kB inactive_anon:102572kB
active_file:584668kB inactive_file:1509216kB unevictable:7464kB
writepending:2332kB present:4691968kB managed:3517764kB mlocked:7464kB
slab_reclaimable:138028kB slab_unreclaimable:121008kB
kernel_stack:4608kB pagetables:7844kB bounce:0kB free_pcp:0kB
local_pcp:0kB free_cma:0kB
Dec 24 09:41:21 krshina3 kernel: lowmem_reserve[]: 0 0 0 0
Dec 24 09:41:21 krshina3 kernel: DMA: 2*4kB (U) 0*8kB 1*16kB (U)
0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U)
1*2048kB (M) 3*4096kB (M) = 15896kB
Dec 24 09:41:21 krshina3 kernel: DMA32: 909*4kB (M) 662*8kB (ME)
313*16kB (UME) 176*32kB (UME) 39*64kB (ME) 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 22068kB
Dec 24 09:41:21 krshina3 kernel: Normal: 1493*4kB (UM) 397*8kB (UME)
375*16kB (UME) 1*32kB (E) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB
0*2048kB 0*4096kB = 15180kB
Dec 24 09:41:21 krshina3 kernel: Node 0 hugepages_total=0
hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Dec 24 09:41:21 krshina3 kernel: 1003306 total pagecache pages
Dec 24 09:41:21 krshina3 kernel: 0 pages in swap cache
Dec 24 09:41:21 krshina3 kernel: Swap cache stats: add 0, delete 0, find 0/0
Dec 24 09:41:21 krshina3 kernel: Free swap = 9775420kB
Dec 24 09:41:21 krshina3 kernel: Total swap = 9775420kB
Dec 24 09:41:21 krshina3 kernel: 2017164 pages RAM
Dec 24 09:41:21 krshina3 kernel: 0 pages HighMem/MovableOnly
Dec 24 09:41:21 krshina3 kernel: 315557 pages reserved
Thanks a lot
Dushan
On Sun, Dec 18, 2016 at 1:44 PM, Edward Shishkin
<edward.shishkin@xxxxxxxxx> wrote:
Try this one in addition.
Thanks,
Edward.
On 12/18/2016 01:17 PM, Dušan Čolić wrote:
It's OK now, mounts read-only on error.
What about that BUG on mount?
On Sat, Dec 17, 2016 at 10:45 PM, Edward Shishkin
<edward.shishkin@xxxxxxxxx> wrote:
Please, check if this help.
Apply from reiser4 directory.
Thanks,
Edward.
On 12/17/2016 10:08 PM, Dušan Čolić wrote:
When mounting reiser4 partitions I get the following bug, but the
system keeps working, even as reiser4 remounted partition as read
only.
All R4 partitions are ccreg40.
Thanks
Dushan
cat /etc/fstab | grep -v "#"
/dev/sda1 /boot ext2 noauto,noatime 1 2
/dev/md123 none swap sw
0
0
/dev/sda2 / reiser4 noatime,onerror=remount-ro
0 0
/dev/md125 /mnt/backup reiser4
noatime,noauto,onerror=remount-ro 0 0
/dev/md126 /mnt/media reiser4
noatime,users,onerror=remount-ro 0 0
/dev/md127 /usr/portage reiser4
noatime,onerror=remount-ro 0 0
/dev/dvdrom /mnt/cdrom auto noauto,ro 0 0
shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
cat /proc/mdstat
Personalities : [raid1]
md122 : active raid1 sdc1[1] sdb1[0]
104320 blocks [2/2] [UU]
md123 : active raid1 sdc2[1] sdb2[0]
594304 blocks [2/2] [UU]
md124 : active raid1 sdc5[1] sdb5[0]
9775424 blocks [2/2] [UU]
md125 : active raid1 sdc6[1] sdb6[0]
68364480 blocks [2/2] [UU]
md126 : active raid1 sdc7[1] sdb7[0]
403110912 blocks [2/2] [UU]
md127 : active raid1 sdc8[1] sdb8[0]
6433920 blocks [2/2] [UU]
df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 37017728 30413152 6604576 83% /
tmpfs 680644 1012 679632 1% /run
dev 10240 0 10240 0% /dev
shm 3403212 1284 3401928 1% /dev/shm
cgroup_root 10240 0 10240 0% /sys/fs/cgroup
/dev/md126 383034100 350741596 32292504 92% /mnt/media
/dev/md127 6113484 5605344 508140 92% /usr/portage
none 3403212 12 3403200 1% /run/user/1001
none 3403212 0 3403212 0% /run/user/1000
/dev/md125 64959612 52568760 12390852 81% /mnt/backup
dmesg
[ 2.057469] reiser4[swapper/0(1)]: try_init_format40
(fs/reiser4/plugin/disk_format/disk_format40.c:303)[vpf-1364]:
NOTICE: Warning: mounting sda2 with fatal errors,
forcing read-only mount.
[ 2.060544] reiser4: sda2: found disk format 4.0.1.
[ 2.062410]
==================================================================
[ 2.063993] BUG: KASAN: use-after-free in
init_format_format40+0x401/0x750 at addr ffff8801d0fc0850
[ 2.065616] Read of size 4 by task swapper/0/1
[ 2.067228] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.11-gentoo
#3
[ 2.068857] Hardware name: Gigabyte Technology Co., Ltd. To be
filled by O.E.M./B75-D3V, BIOS F5 07/04/2012
[ 2.070566] ffff8801d08f4580 ffff8801d6327a20 ffffffff81424185
ffff8801d6000600
[ 2.072316] ffff8801d0fc0800 ffff8801d6327a48 ffffffff811ff90c
ffff8801d6327ad8
[ 2.074078] ffff8801d0fc0800 ffff8801d0fc0800 ffff8801d6327ac8
ffffffff811ffb79
[ 2.075861] Call Trace:
[ 2.077616] [<ffffffff81424185>] dump_stack+0x4d/0x68
[ 2.079402] [<ffffffff811ff90c>] kasan_object_err+0x1c/0x70
[ 2.081216] [<ffffffff811ffb79>] kasan_report_error+0x1c9/0x4b0
[ 2.083049] [<ffffffff812a10cf>] ? zget+0xdf/0x3c0
[ 2.084876] [<ffffffff811ffef4>] kasan_report+0x34/0x40
[ 2.086717] [<ffffffff81304b11>] ? init_format_format40+0x401/0x750
[ 2.088594] [<ffffffff811ff601>] __asan_load4+0x61/0x80
[ 2.090471] [<ffffffff81304b11>] init_format_format40+0x401/0x750
[ 2.092356] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 2.094224] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 2.096073] [<ffffffff812c4df0>] ? reiser4_mount+0x20/0x20
[ 2.097930] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 2.099785] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 2.101654] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 2.103528] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 2.105397] [<ffffffff811fe944>] ? kasan_check_write+0x14/0x20
[ 2.107295] [<ffffffff811c4624>] ? strndup_user+0x54/0x70
[ 2.109187] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 2.111089] [<ffffffff820a8759>] mount_block_root+0x171/0x3ac
[ 2.113023] [<ffffffff820a8a0b>] mount_root+0x77/0xd8
[ 2.114955] [<ffffffff820a8ba1>] prepare_namespace+0x135/0x16d
[ 2.116887] [<ffffffff820a84ec>] kernel_init_freeable+0x237/0x24b
[ 2.118811] [<ffffffff81a50e9e>] kernel_init+0xe/0x120
[ 2.120713] [<ffffffff81a5780f>] ret_from_fork+0x1f/0x40
[ 2.122618] [<ffffffff81a50e90>] ? rest_init+0x80/0x80
[ 2.124522] Object at ffff8801d0fc0800, in cache kmalloc-512 size:
512
[ 2.126453] Allocated:
[ 2.128364] PID = 1
[ 2.130261] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[ 2.132219] [<ffffffff811fe802>] kasan_kmalloc.part.5+0x62/0xf0
[ 2.134206] [<ffffffff811ff018>] kasan_kmalloc+0x78/0xa0
[ 2.136188] [<ffffffff813048bc>] init_format_format40+0x1ac/0x750
[ 2.138174] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 2.140144] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 2.142096] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 2.144055] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 2.146028] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 2.148016] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 2.150014] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 2.152026] [<ffffffff820a8759>] mount_block_root+0x171/0x3ac
[ 2.154055] [<ffffffff820a8a0b>] mount_root+0x77/0xd8
[ 2.156066] [<ffffffff820a8ba1>] prepare_namespace+0x135/0x16d
[ 2.158074] [<ffffffff820a84ec>] kernel_init_freeable+0x237/0x24b
[ 2.160079] [<ffffffff81a50e9e>] kernel_init+0xe/0x120
[ 2.162020] [<ffffffff81a5780f>] ret_from_fork+0x1f/0x40
[ 2.163918] Freed:
[ 2.165760] PID = 1
[ 2.167562] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[ 2.169376] [<ffffffff811feed7>] kasan_slab_free+0xb7/0x180
[ 2.171150] [<ffffffff811fd67b>] kfree+0x6b/0x90
[ 2.172895] [<ffffffff81304b09>] init_format_format40+0x3f9/0x750
[ 2.174616] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 2.176290] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 2.177962] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 2.179633] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 2.181273] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 2.182910] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 2.184541] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 2.186171] [<ffffffff820a8759>] mount_block_root+0x171/0x3ac
[ 2.187804] [<ffffffff820a8a0b>] mount_root+0x77/0xd8
[ 2.189430] [<ffffffff820a8ba1>] prepare_namespace+0x135/0x16d
[ 2.191056] [<ffffffff820a84ec>] kernel_init_freeable+0x237/0x24b
[ 2.192683] [<ffffffff81a50e9e>] kernel_init+0xe/0x120
[ 2.194296] [<ffffffff81a5780f>] ret_from_fork+0x1f/0x40
[ 2.195902] Memory state around the buggy address:
[ 2.197517] ffff8801d0fc0700: fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc fc
[ 2.199178] ffff8801d0fc0780: fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc fc
[ 2.200818] >ffff8801d0fc0800: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 2.202460] ^
[ 2.204114] ffff8801d0fc0880: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 2.205804] ffff8801d0fc0900: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 2.207471]
==================================================================
[ 2.209162] Disabling lock debugging due to kernel taint
[ 2.210933] reiser4: sda2: use 'fsck.reiser4 --fix' to complete
disk format upgrade.
[ 2.212696] usb 1-1.4: new high-speed USB device number 3 using
ehci-pci
[ 2.214507] usb 2-1.5: new full-speed USB device number 3 using
ehci-pci
[ 2.234910] hid-generic 0003:051D:0002.0002: device has no
listeners, quitting
[ 2.312037] reiser4: sda2: using Hybrid Transaction Model.
[ 2.313880] VFS: Mounted root (reiser4 filesystem) readonly on device
8:2.
[ 2.315949] Freeing unused kernel memory: 968K (ffffffff82086000 -
ffffffff82178000)
[ 2.317823] Write protecting the kernel read-only data: 16384k
[ 2.320900] Freeing unused kernel memory: 1636K (ffff880001a67000 -
ffff880001c00000)
[ 2.331114] Freeing unused kernel memory: 1848K (ffff880001e32000 -
ffff880002000000)
[ 2.334644] hub 1-1.4:1.0: USB hub found
[ 2.336766] hub 1-1.4:1.0: 2 ports detected
[ 2.624398] usb 1-1.4.2: new full-speed USB device number 4 using
ehci-pci
[ 5.221431] random: crng init done
[ 7.579186] Adding 594300k swap on /dev/md123. Priority:-1
extents:1 across:594300k
[ 7.661464] reiser4: md126: found disk format 4.0.1.
[ 7.661541]
==================================================================
[ 7.661546] BUG: KASAN: use-after-free in
init_format_format40+0x401/0x750 at addr ffff8801cfaf1350
[ 7.661548] Read of size 4 by task mount/1662
[ 7.661551] CPU: 0 PID: 1662 Comm: mount Tainted: G B
4.8.11-gentoo #3
[ 7.661552] Hardware name: Gigabyte Technology Co., Ltd. To be
filled by O.E.M./B75-D3V, BIOS F5 07/04/2012
[ 7.661553] ffff8801ceef3580 ffff8801cf087b28 ffffffff81424185
ffff8801d6000600
[ 7.661556] ffff8801cfaf1300 ffff8801cf087b50 ffffffff811ff90c
ffff8801cf087be0
[ 7.661559] ffff8801cfaf1300 ffff8801cfaf1300 ffff8801cf087bd0
ffffffff811ffb79
[ 7.661561] Call Trace:
[ 7.661565] [<ffffffff81424185>] dump_stack+0x4d/0x68
[ 7.661569] [<ffffffff811ff90c>] kasan_object_err+0x1c/0x70
[ 7.661571] [<ffffffff811ffb79>] kasan_report_error+0x1c9/0x4b0
[ 7.661574] [<ffffffff812a10cf>] ? zget+0xdf/0x3c0
[ 7.661577] [<ffffffff811ffef4>] kasan_report+0x34/0x40
[ 7.661580] [<ffffffff81304b11>] ? init_format_format40+0x401/0x750
[ 7.661582] [<ffffffff811ff601>] __asan_load4+0x61/0x80
[ 7.661585] [<ffffffff81304b11>] init_format_format40+0x401/0x750
[ 7.661588] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 7.661591] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 7.661593] [<ffffffff812c4df0>] ? reiser4_mount+0x20/0x20
[ 7.661594] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 7.661597] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 7.661600] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 7.661602] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 7.661604] [<ffffffff812337f1>] ? copy_mount_options+0x111/0x220
[ 7.661606] [<ffffffff812337da>] ? copy_mount_options+0xfa/0x220
[ 7.661608] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 7.661613] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 7.661614] Object at ffff8801cfaf1300, in cache kmalloc-512 size:
512
[ 7.661615] Allocated:
[ 7.661615] PID = 1662
[ 7.661616] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[ 7.661620] [<ffffffff811fe802>] kasan_kmalloc.part.5+0x62/0xf0
[ 7.661622] [<ffffffff811ff018>] kasan_kmalloc+0x78/0xa0
[ 7.661625] [<ffffffff813048bc>] init_format_format40+0x1ac/0x750
[ 7.661628] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 7.661630] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 7.661632] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 7.661634] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 7.661637] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 7.661639] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 7.661641] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 7.661643] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 7.661646] Freed:
[ 7.661646] PID = 1662
[ 7.661647] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[ 7.661649] [<ffffffff811feed7>] kasan_slab_free+0xb7/0x180
[ 7.661652] [<ffffffff811fd67b>] kfree+0x6b/0x90
[ 7.661654] [<ffffffff81304b09>] init_format_format40+0x3f9/0x750
[ 7.661657] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 7.661659] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 7.661662] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 7.661664] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 7.661666] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 7.661668] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 7.661670] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 7.661672] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 7.661675] Memory state around the buggy address:
[ 7.661677] ffff8801cfaf1200: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 7.661679] ffff8801cfaf1280: fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc fc
[ 7.661681] >ffff8801cfaf1300: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 7.661681] ^
[ 7.661683] ffff8801cfaf1380: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 7.661684] ffff8801cfaf1400: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 7.661685]
==================================================================
[ 10.972840] rcu-perf:rcu_perf_writer 0 has 100 measurements
[ 11.016722] rcu-perf:Test complete
[ 26.835385] reiser4: md126: using Hybrid Transaction Model.
[ 26.857910] reiser4: md127: found disk format 4.0.1.
[ 26.857995]
==================================================================
[ 26.858002] BUG: KASAN: use-after-free in
init_format_format40+0x401/0x750 at addr ffff8801cbf560d0
[ 26.858003] Read of size 4 by task mount/1662
[ 26.858006] CPU: 0 PID: 1662 Comm: mount Tainted: G B
4.8.11-gentoo #3
[ 26.858007] Hardware name: Gigabyte Technology Co., Ltd. To be
filled by O.E.M./B75-D3V, BIOS F5 07/04/2012
[ 26.858009] ffff8801b9ded5c0 ffff8801cf087b28 ffffffff81424185
ffff8801d6000600
[ 26.858012] ffff8801cbf56080 ffff8801cf087b50 ffffffff811ff90c
ffff8801cf087be0
[ 26.858014] ffff8801cbf56080 ffff8801cbf56080 ffff8801cf087bd0
ffffffff811ffb79
[ 26.858017] Call Trace:
[ 26.858020] [<ffffffff81424185>] dump_stack+0x4d/0x68
[ 26.858024] [<ffffffff811ff90c>] kasan_object_err+0x1c/0x70
[ 26.858027] [<ffffffff811ffb79>] kasan_report_error+0x1c9/0x4b0
[ 26.858029] [<ffffffff812a10cf>] ? zget+0xdf/0x3c0
[ 26.858032] [<ffffffff811ffef4>] kasan_report+0x34/0x40
[ 26.858035] [<ffffffff81304b11>] ? init_format_format40+0x401/0x750
[ 26.858038] [<ffffffff811ff601>] __asan_load4+0x61/0x80
[ 26.858040] [<ffffffff81304b11>] init_format_format40+0x401/0x750
[ 26.858043] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 26.858046] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 26.858048] [<ffffffff812c4df0>] ? reiser4_mount+0x20/0x20
[ 26.858050] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 26.858052] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 26.858055] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 26.858057] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 26.858059] [<ffffffff812337da>] ? copy_mount_options+0xfa/0x220
[ 26.858061] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 26.858065] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 26.858067] Object at ffff8801cbf56080, in cache kmalloc-512 size:
512
[ 26.858067] Allocated:
[ 26.858068] PID = 1662
[ 26.858069] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[ 26.858072] [<ffffffff811fe802>] kasan_kmalloc.part.5+0x62/0xf0
[ 26.858075] [<ffffffff811ff018>] kasan_kmalloc+0x78/0xa0
[ 26.858077] [<ffffffff813048bc>] init_format_format40+0x1ac/0x750
[ 26.858080] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 26.858082] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 26.858085] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 26.858087] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 26.858089] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 26.858091] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 26.858093] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 26.858095] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 26.858098] Freed:
[ 26.858099] PID = 1662
[ 26.858099] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[ 26.858102] [<ffffffff811feed7>] kasan_slab_free+0xb7/0x180
[ 26.858104] [<ffffffff811fd67b>] kfree+0x6b/0x90
[ 26.858107] [<ffffffff81304b09>] init_format_format40+0x3f9/0x750
[ 26.858109] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[ 26.858111] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[ 26.858114] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[ 26.858116] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[ 26.858118] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[ 26.858120] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[ 26.858122] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[ 26.858124] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 26.858128] Memory state around the buggy address:
[ 26.858130] ffff8801cbf55f80: fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc fc
[ 26.858131] ffff8801cbf56000: fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc fc
[ 26.858133] >ffff8801cbf56080: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 26.858134] ^
[ 26.858135] ffff8801cbf56100: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 26.858137] ffff8801cbf56180: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 26.858137]
==================================================================
[ 27.199941] reiser4: md127: using Hybrid Transaction Model.
[33530.203469] reiser4[mount(11677)]: try_init_format40
(fs/reiser4/plugin/disk_format/disk_format40.c:303)[vpf-1364]:
NOTICE: Warning: mounting md125 with fatal errors,
forcing read-only mount.
[33530.203480] reiser4: md125: found disk format 4.0.1.
[33530.203564]
==================================================================
[33530.203570] BUG: KASAN: use-after-free in
init_format_format40+0x401/0x750 at addr ffff88013164d810
[33530.203571] Read of size 4 by task mount/11677
[33530.203574] CPU: 0 PID: 11677 Comm: mount Tainted: G B
4.8.11-gentoo #3
[33530.203575] Hardware name: Gigabyte Technology Co., Ltd. To be
filled by O.E.M./B75-D3V, BIOS F5 07/04/2012
[33530.203577] ffff88000e65ce80 ffff88000da87b28 ffffffff81424185
ffff8801d6000600
[33530.203580] ffff88013164d7c0 ffff88000da87b50 ffffffff811ff90c
ffff88000da87be0
[33530.203582] ffff88013164d7c0 ffff88013164d7c0 ffff88000da87bd0
ffffffff811ffb79
[33530.203585] Call Trace:
[33530.203588] [<ffffffff81424185>] dump_stack+0x4d/0x68
[33530.203592] [<ffffffff811ff90c>] kasan_object_err+0x1c/0x70
[33530.203595] [<ffffffff811ffb79>] kasan_report_error+0x1c9/0x4b0
[33530.203597] [<ffffffff812a10cf>] ? zget+0xdf/0x3c0
[33530.203600] [<ffffffff811ffef4>] kasan_report+0x34/0x40
[33530.203603] [<ffffffff81304b11>] ? init_format_format40+0x401/0x750
[33530.203605] [<ffffffff811ff601>] __asan_load4+0x61/0x80
[33530.203608] [<ffffffff81304b11>] init_format_format40+0x401/0x750
[33530.203610] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[33530.203613] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[33530.203615] [<ffffffff812c4df0>] ? reiser4_mount+0x20/0x20
[33530.203617] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[33530.203620] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[33530.203622] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[33530.203625] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[33530.203627] [<ffffffff812337f1>] ? copy_mount_options+0x111/0x220
[33530.203629] [<ffffffff812337da>] ? copy_mount_options+0xfa/0x220
[33530.203631] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[33530.203635] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[33530.203637] Object at ffff88013164d7c0, in cache kmalloc-512 size:
512
[33530.203637] Allocated:
[33530.203638] PID = 11677
[33530.203639] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[33530.203642] [<ffffffff811fe802>] kasan_kmalloc.part.5+0x62/0xf0
[33530.203645] [<ffffffff811ff018>] kasan_kmalloc+0x78/0xa0
[33530.203647] [<ffffffff813048bc>] init_format_format40+0x1ac/0x750
[33530.203650] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[33530.203652] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[33530.203654] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[33530.203656] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[33530.203659] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[33530.203661] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[33530.203663] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[33530.203665] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[33530.203668] Freed:
[33530.203669] PID = 11677
[33530.203669] [<ffffffff8109f536>] save_stack_trace+0x26/0x50
[33530.203671] [<ffffffff811feed7>] kasan_slab_free+0xb7/0x180
[33530.203674] [<ffffffff811fd67b>] kfree+0x6b/0x90
[33530.203676] [<ffffffff81304b09>] init_format_format40+0x3f9/0x750
[33530.203679] [<ffffffff812c4f3a>] fill_super+0x14a/0x300
[33530.203681] [<ffffffff81209b6f>] mount_bdev+0x1bf/0x200
[33530.203683] [<ffffffff812c4de0>] reiser4_mount+0x10/0x20
[33530.203685] [<ffffffff81209dfe>] mount_fs+0x2e/0xe0
[33530.203688] [<ffffffff81231a96>] vfs_kern_mount+0x66/0x190
[33530.203690] [<ffffffff81233af2>] do_mount+0x1d2/0x1080
[33530.203692] [<ffffffff81234e46>] SyS_mount+0x66/0xb0
[33530.203694] [<ffffffff81a5761b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[33530.203697] Memory state around the buggy address:
[33530.203699] ffff88013164d700: fc fc fc fc fc fc fc fc fc fc fc fc
fc fc fc fc
[33530.203701] ffff88013164d780: fc fc fc fc fc fc fc fc fb fb fb fb
fb fb fb fb
[33530.203703] >ffff88013164d800: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[33530.203703] ^
[33530.203705] ffff88013164d880: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[33530.203707] ffff88013164d900: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[33530.203707]
==================================================================
[33533.485380] reiser4: md125: using Hybrid Transaction Model.
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