kernel BUG in gfs2_glock_nq

Status: upstream: reported C repro on 2025/06/22 16:51
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+e41682c0c00227f58699@syzkaller.appspotmail.com
First crash: 463d, last: 3d07h
Fix commit to backport (bisect log) :
tree: upstream
commit ae9f3bd8259a0a8f67be2420e66bb05fbb95af48
Author: Andreas Gruenbacher <agruenba@redhat.com>
Date: Sat Apr 5 22:31:37 2025 +0000

  gfs2: replace sd_aspace with sd_inode

  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/06/25 linux-6.6.y (ToT) 6282921b6825 C [report] kernel BUG in gfs2_glock_nq
2025/06/25 upstream (ToT) c4dce0c094a8 C Didn't crash
▶ ▼ Similar bugs (9)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 kernel BUG in gfs2_glock_nq -1 2 1715d 1759d 0/1 auto-closed as invalid on 2022/05/17 22:53
linux-4.19 kernel BUG in gfs2_glock_nq -1 1 1995d 1995d 0/1 auto-closed as invalid on 2021/08/11 04:31
linux-4.19 kernel BUG in gfs2_glock_nq (2) gfs2 -1 syz, C error 52 1302d 1841d 0/1 upstream: reported C repro on 2021/09/14 01:12
upstream kernel BUG in gfs2_glock_nq gfs2 -1 2 1770d 1760d 0/29 auto-closed as invalid on 2022/03/23 19:53
linux-6.1 kernel BUG in gfs2_glock_nq origin:upstream missing-backport -1 syz, C inconclusive 5212 2h09m 1297d 0/3 upstream: reported C repro on 2023/03/12 01:31
linux-4.14 kernel BUG in gfs2_glock_nq (2) gfs2 -1 syz, C 7 1306d 1587d 0/1 upstream: reported C repro on 2022/05/26 14:43
upstream kernel BUG in gfs2_glock_nq (2) prio:low gfs2 -1 syz, C error 1484 3h19m 1467d 0/29 upstream: reported C repro on 2022/09/23 06:12
linux-5.15 kernel BUG in gfs2_glock_nq origin:upstream -1 syz, C error 1853 6d05h 1296d 0/3 upstream: reported C repro on 2023/03/12 21:28
linux-4.14 kernel BUG at fs/gfs2/glock.c:LINE! -1 3 2071d 2143d 0/1 auto-closed as invalid on 2021/05/27 07:56
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2026/03/19 20:22 11m hellouser819@gmail.com linux-6.6.y error
2026/03/19 16:34 57m hellouser819@gmail.com linux-6.6.y error
2025/08/12 13:16 14m sumanth.gavini@yahoo.com patch linux-6.6.y report log
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/07/12 13:20 6h01m fix candidate upstream OK (1) job log

Sample crash report:
gfs2: fsid=syz:syz.0: lock type: 8 req lock state : 1
gfs2: fsid=syz:syz.0: new: gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
gfs2: fsid=syz:syz.0: pid: 5885
gfs2: fsid=syz:syz.0: lock type: 8 req lock state : 1
gfs2: fsid=syz:syz.0: G:  s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:6 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:5885 [syz-executor] gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1605!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5885 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:add_to_queue fs/gfs2/glock.c:1605 [inline]
RIP: 0010:gfs2_glock_nq+0x113b/0x1420 fs/gfs2/glock.c:1630
Code: 2b cd 35 fe 41 0f b7 0e 48 c7 c7 c0 b2 0f 8b 4c 89 e6 89 da e8 c6 50 d1 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 15 70 ff ff <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 45 f1 ff ff 4c 89 f7
RSP: 0018:ffffc900032479f8 EFLAGS: 00010246
RAX: 677086977b4e4700 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52000648f34
RBP: ffff88805dd83be0 R08: ffffffff8e8b19af R09: 0000000000000000
R10: fffff52000648ef0 R11: fffffbfff1d16336 R12: ffff88802570d280
R13: ffff888075de3818 R14: ffff888075de385a R15: ffff888075de3822
FS:  0000555579546500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8943254000 CR3: 0000000026bc9000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:253 [inline]
 do_sync+0x407/0xe50 fs/gfs2/quota.c:912
 gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0xea/0x220 fs/sync.c:56
 generic_shutdown_super+0x6f/0x2b0 fs/super.c:666
 kill_block_super+0x44/0x90 fs/super.c:1660
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x43b/0x4d0 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4339b9e097
Code: a2 c7 05 5c 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc48a9a9d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4339c321ca RCX: 00007f4339b9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc48a9aa90
RBP: 00007ffc48a9aa90 R08: 00007ffc48a9ba90 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc48a9bb20
R13: 00007f4339c321ca R14: 0000000000019ac4 R15: 00007ffc48a9bb60
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1605 [inline]
RIP: 0010:gfs2_glock_nq+0x113b/0x1420 fs/gfs2/glock.c:1630
Code: 2b cd 35 fe 41 0f b7 0e 48 c7 c7 c0 b2 0f 8b 4c 89 e6 89 da e8 c6 50 d1 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 15 70 ff ff <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 45 f1 ff ff 4c 89 f7
RSP: 0018:ffffc900032479f8 EFLAGS: 00010246
RAX: 677086977b4e4700 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52000648f34
RBP: ffff88805dd83be0 R08: ffffffff8e8b19af R09: 0000000000000000
R10: fffff52000648ef0 R11: fffffbfff1d16336 R12: ffff88802570d280
R13: ffff888075de3818 R14: ffff888075de385a R15: ffff888075de3822
FS:  0000555579546500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8943254000 CR3: 0000000026bc9000 CR4: 00000000003506e0

Crashes (1338):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/14 16:02 linux-6.6.y 3b9f64db0496 6ccb967e .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/01/25 06:42 linux-6.6.y cbb31f77b879 40acda8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/10/09 07:35 linux-6.6.y e617101e5626 7e2882b3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/06/22 18:48 linux-6.6.y 6282921b6825 d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/26 08:57 linux-6.6.y 79643295eba1 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/25 02:50 linux-6.6.y 79643295eba1 f281d9d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/24 07:35 linux-6.6.y 79643295eba1 0281b448 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/24 02:20 linux-6.6.y 79643295eba1 0281b448 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/22 21:09 linux-6.6.y 79643295eba1 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/22 05:07 linux-6.6.y 79643295eba1 e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/22 01:38 linux-6.6.y 79643295eba1 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/21 11:26 linux-6.6.y 79643295eba1 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/17 17:54 linux-6.6.y 79643295eba1 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/17 09:42 linux-6.6.y 79643295eba1 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/17 09:31 linux-6.6.y 79643295eba1 95928915 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/12 04:44 linux-6.6.y 8b73de7da85f 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/11 15:14 linux-6.6.y 8b73de7da85f b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/11 15:08 linux-6.6.y 8b73de7da85f b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/10 15:01 linux-6.6.y 8b73de7da85f 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/09 21:09 linux-6.6.y 8b73de7da85f 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/09 08:18 linux-6.6.y 8b73de7da85f 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/08 19:58 linux-6.6.y 8b73de7da85f 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/07 16:11 linux-6.6.y 8b73de7da85f 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/06 14:02 linux-6.6.y 8b73de7da85f 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/06 14:00 linux-6.6.y 8b73de7da85f 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/04 13:26 linux-6.6.y 8b73de7da85f f65209a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/04 10:18 linux-6.6.y 8b73de7da85f f65209a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/03 21:04 linux-6.6.y 8b73de7da85f 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/03 07:45 linux-6.6.y 8b73de7da85f 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/02 23:31 linux-6.6.y 8b73de7da85f 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/02 19:04 linux-6.6.y 8b73de7da85f 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/02 13:08 linux-6.6.y a4a971135a2f 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/01 22:31 linux-6.6.y a4a971135a2f 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/09/01 14:35 linux-6.6.y a4a971135a2f 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/31 19:57 linux-6.6.y a4a971135a2f 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/27 16:54 linux-6.6.y 93e0c9521fa8 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/26 16:14 linux-6.6.y dc6160265ffc a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/26 03:54 linux-6.6.y dc6160265ffc 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 15:53 linux-6.6.y dc6160265ffc a9a1fc32 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 11:05 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 10:52 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 10:40 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 10:29 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 10:24 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/25 00:02 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/24 11:50 linux-6.6.y dc6160265ffc b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/23 02:28 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/23 02:16 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/21 21:48 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/17 15:06 linux-6.6.y d27334b2888c 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/08/14 19:36 linux-6.6.y d27334b2888c 6f9b3e89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/07/31 04:22 linux-6.6.y a1153c0deb44 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/07/29 22:18 linux-6.6.y ae068b676196 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/07/29 15:50 linux-6.6.y c5596480c50e 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/07/29 02:20 linux-6.6.y c5596480c50e 19622d9d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/06/22 16:51 linux-6.6.y 6282921b6825 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
* Struck through repros no longer work on HEAD.