syzbot


kernel BUG in gfs2_glock_nq (2)

Status: upstream: reported on 2022/05/26 14:43
Reported-by: syzbot+8187784791754d60479b@syzkaller.appspotmail.com
First crash: 188d, last: 103d
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 1d20h 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
upstream kernel BUG in gfs2_glock_nq (2) C error 19 1d03h 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
linux-4.19 kernel BUG at fs/gfs2/glock.c:LINE! 2 740d 773d 0/1 auto-closed as invalid on 2021/03/20 05:06

Sample crash report:
gfs2: pid: 8015
gfs2: lock type: 8 req lock state : 1
gfs2: G:  s:EX n:8/0 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20
gfs2:  H: s:EX f:cH e:0 p:8015 [syz-executor.1] gfs2_glock_nq_init fs/gfs2/glock.h:226 [inline]
gfs2:  H: s:EX f:cH e:0 p:8015 [syz-executor.1] do_sync+0x3f0/0xba0 fs/gfs2/quota.c:893
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1082!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 8015 Comm: syz-executor.1 Not tainted 4.14.290-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
task: ffff88808f58a0c0 task.stack: ffff888094f10000
RIP: 0010:add_to_queue fs/gfs2/glock.c:1082 [inline]
RIP: 0010:gfs2_glock_nq.cold+0x279/0x2d0 fs/gfs2/glock.c:1107
RSP: 0018:ffff888094f17a88 EFLAGS: 00010296
RAX: ffffed10129e2f32 RBX: ffff88809b4a57e0 RCX: 1ffff11011eb153d
RDX: 0000000000000000 RSI: 0000000000000005 RDI: ffffffff87c0d5d0
RBP: 0000000000001f4f R08: 0000000000000043 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809c156bf8
R13: ffff88809b4a57e0 R14: 0000000000000001 R15: 0000000000000000
FS:  000055555721a400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556e84708 CR3: 00000000a9821000 CR4: 00000000003406e0
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+0x3f8/0xba0 fs/gfs2/quota.c:893
 gfs2_quota_sync+0x4f1/0x690 fs/gfs2/quota.c:1299
 gfs2_sync_fs+0x40/0xa0 fs/gfs2/super.c:947
 __sync_filesystem fs/sync.c:39 [inline]
 sync_filesystem fs/sync.c:64 [inline]
 sync_filesystem+0xe2/0x230 fs/sync.c:48
 generic_shutdown_super+0x70/0x370 fs/super.c:432
 kill_block_super+0x95/0xe0 fs/super.c:1161
 gfs2_kill_sb+0x12c/0x1a0 fs/gfs2/ops_fstype.c:1409
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f882e6b06e7
RSP: 002b:00007ffe5b9e70f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f882e6b06e7
RDX: 00007ffe5b9e71ca RSI: 000000000000000a RDI: 00007ffe5b9e71c0
RBP: 00007ffe5b9e71c0 R08: 00000000ffffffff R09: 00007ffe5b9e6f90
R10: 000055555721b903 R11: 0000000000000246 R12: 00007f882e7082ce
R13: 00007ffe5b9e8280 R14: 000055555721b810 R15: 00007ffe5b9e82c0
Code: c1 ea 03 0f b6 04 02 84 c0 74 04 3c 03 7e 6c 8b 73 18 44 89 f2 48 c7 c7 a0 b3 c0 87 e8 25 83 f9 ff 4c 89 ee 31 ff e8 66 3c b1 fb <0f> 0b e8 5f 10 76 fa 4c 8b 04 24 e9 ac fd ff ff 31 ed e9 14 fe 
RIP: add_to_queue fs/gfs2/glock.c:1082 [inline] RSP: ffff888094f17a88
RIP: gfs2_glock_nq.cold+0x279/0x2d0 fs/gfs2/glock.c:1107 RSP: ffff888094f17a88
---[ end trace b6aeafb5de51bf47 ]---

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2022/08/19 02:16 linux-4.14.y b641242202ed 26a13b38 .config log report info kernel BUG in gfs2_glock_nq
ci2-linux-4-14 2022/05/26 14:43 linux-4.14.y 501eec4f9e13 3037caa9 .config log report info kernel BUG in gfs2_glock_nq
* Struck through repros no longer work on HEAD.