syzbot


kernel BUG at fs/gfs2/glock.c:LINE!

Status: auto-closed as invalid on 2021/03/20 05:06
Reported-by: syzbot+62ae7f0d8c8345ab7244@syzkaller.appspotmail.com
First crash: 773d, last: 740d
similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 kernel BUG in gfs2_glock_nq 2 316d 360d 0/1 auto-closed as invalid on 2022/05/17 22:53
linux-4.19 kernel BUG in gfs2_glock_nq 1 596d 596d 0/1 auto-closed as invalid on 2021/08/11 04:31
linux-4.19 kernel BUG in gfs2_glock_nq (2) C error 16 1d19h 442d 0/1 upstream: reported C repro on 2021/09/14 01:12
upstream kernel BUG in gfs2_glock_nq 2 372d 361d 0/24 auto-closed as invalid on 2022/03/23 19:53
linux-4.14 kernel BUG in gfs2_glock_nq (2) 2 103d 188d 0/1 upstream: reported on 2022/05/26 14:43
upstream kernel BUG in gfs2_glock_nq (2) C error 19 1d02h 68d 0/24 upstream: reported C repro on 2022/09/23 06:12
linux-4.14 kernel BUG at fs/gfs2/glock.c:LINE! 3 672d 744d 0/1 auto-closed as invalid on 2021/05/27 07:56

Sample crash report:
gfs2: pid: 14393
gfs2: lock type: 8 req lock state : 1
gfs2: G:  s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20
gfs2:  H: s:EX f:cH e:0 p:14393 [syz-executor.4] gfs2_glock_nq_init fs/gfs2/glock.h:226 [inline]
gfs2:  H: s:EX f:cH e:0 p:14393 [syz-executor.4] do_sync+0x442/0xc90 fs/gfs2/quota.c:896
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1082!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 14393 Comm: syz-executor.4 Not tainted 4.19.158-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:add_to_queue fs/gfs2/glock.c:1082 [inline]
RIP: 0010:gfs2_glock_nq.cold+0x276/0x2d5 fs/gfs2/glock.c:1107
Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 6e 8b 73 18 44 89 ea 48 c7 c7 e0 28 a6 88 e8 2a 23 41 fe 48 8b 74 24 08 31 ff e8 9f 7e ff ff <0f> 0b e8 e8 50 8c fe 4c 8b 04 24 e9 aa fd ff ff 31 ed e9 12 fe ff
RSP: 0018:ffff8882272efa20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88801279ccf8 RCX: ffffffff830e34c3
RDX: 0000000000000000 RSI: ffffffff830e3512 RDI: ffffffff88a64bb0
RBP: 0000000000003839 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888098ae99f8
R13: 0000000000000001 R14: 0000000000000000 R15: ffff88808c81b380
FS:  0000000001bde940(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff0765ff9c CR3: 00000002199aa000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline]
 do_sync+0x44a/0xc90 fs/gfs2/quota.c:896
 gfs2_quota_sync+0x5d1/0x780 fs/gfs2/quota.c:1303
 gfs2_sync_fs+0x40/0xb0 fs/gfs2/super.c:957
 __sync_filesystem fs/sync.c:39 [inline]
 sync_filesystem+0x105/0x250 fs/sync.c:64
 generic_shutdown_super+0x70/0x370 fs/super.c:442
 kill_block_super+0x97/0xf0 fs/super.c:1185
 gfs2_kill_sb+0x12c/0x1a0 fs/gfs2/ops_fstype.c:1390
 deactivate_locked_super+0x94/0x160 fs/super.c:329
 deactivate_super+0x174/0x1a0 fs/super.c:360
 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608e7
Code: 64 89 04 25 d0 02 00 00 58 5f ff d0 48 89 c7 e8 2f be ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff076606a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000004608e7
RDX: 00000000004031f8 RSI: 0000000000000002 RDI: 00007fff07660750
RBP: 0000000000000066 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000005 R11: 0000000000000246 R12: 00007fff076617e0
R13: 0000000001bdfa60 R14: 0000000000000000 R15: 00007fff076617e0
Modules linked in:
---[ end trace c08ffaa2979da79b ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1082 [inline]
RIP: 0010:gfs2_glock_nq.cold+0x276/0x2d5 fs/gfs2/glock.c:1107
Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 6e 8b 73 18 44 89 ea 48 c7 c7 e0 28 a6 88 e8 2a 23 41 fe 48 8b 74 24 08 31 ff e8 9f 7e ff ff <0f> 0b e8 e8 50 8c fe 4c 8b 04 24 e9 aa fd ff ff 31 ed e9 12 fe ff
RSP: 0018:ffff8882272efa20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88801279ccf8 RCX: ffffffff830e34c3
RDX: 0000000000000000 RSI: ffffffff830e3512 RDI: ffffffff88a64bb0
RBP: 0000000000003839 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888098ae99f8
R13: 0000000000000001 R14: 0000000000000000 R15: ffff88808c81b380
FS:  0000000001bde940(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff0765ff9c CR3: 00000002199aa000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2020/11/20 05:05 linux-4.19.y 2c746135a12e 0767f13f .config log report info
ci2-linux-4-19 2020/10/18 03:58 linux-4.19.y ad326970d25c fea47c01 .config log report info
* Struck through repros no longer work on HEAD.