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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: 240d, last: 5h38m
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 1491d 1535d 0/1 auto-closed as invalid on 2022/05/17 22:53
linux-4.19 kernel BUG in gfs2_glock_nq -1 1 1771d 1771d 0/1 auto-closed as invalid on 2021/08/11 04:31
linux-4.19 kernel BUG in gfs2_glock_nq (2) gfs2 -1 C error 52 1078d 1617d 0/1 upstream: reported C repro on 2021/09/14 01:12
upstream kernel BUG in gfs2_glock_nq gfs2 -1 2 1547d 1536d 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 C inconclusive 3624 5h41m 1073d 0/3 upstream: reported C repro on 2023/03/12 01:31
linux-4.14 kernel BUG in gfs2_glock_nq (2) gfs2 -1 C 7 1082d 1363d 0/1 upstream: reported C repro on 2022/05/26 14:43
upstream kernel BUG in gfs2_glock_nq (2) gfs2 -1 C error 1444 3d17h 1243d 0/29 upstream: reported C repro on 2022/09/23 06:12
linux-5.15 kernel BUG in gfs2_glock_nq origin:upstream -1 C error 1444 2d09h 1072d 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 1847d 1919d 0/1 auto-closed as invalid on 2021/05/27 07:56
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
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: G:  s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:8 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:5878 [syz-executor] gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1587!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5878 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:add_to_queue fs/gfs2/glock.c:1587 [inline]
RIP: 0010:gfs2_glock_nq+0x113b/0x1420 fs/gfs2/glock.c:1612
Code: 7b 42 36 fe 41 0f b7 0e 48 c7 c7 c0 a5 0f 8b 4c 89 e6 89 da e8 06 94 cf 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 b5 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:ffffc900033679f8 EFLAGS: 00010246
RAX: 022dc30304855c00 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff5200066cf34
RBP: ffff88805f046920 R08: ffffffff8e8ad9ef R09: 0000000000000000
R10: fffff5200066cef0 R11: fffffbfff1d15b3e R12: ffff8880258a9280
R13: ffff888023f2ec18 R14: ffff888023f2ec5a R15: ffff888023f2ec22
FS:  00005555693fa500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555569415a28 CR3: 000000002bc8a000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:252 [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: 0033:0x7f2437d9bf17
Code: a2 c7 05 7c 96 24 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:00007ffd630850e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f2437e0471f RCX: 00007f2437d9bf17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd630851a0
RBP: 00007ffd630851a0 R08: 00007ffd630861a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd63086230
R13: 00007f2437e0471f R14: 000000000001434c R15: 00007ffd63086270
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1587 [inline]
RIP: 0010:gfs2_glock_nq+0x113b/0x1420 fs/gfs2/glock.c:1612
Code: 7b 42 36 fe 41 0f b7 0e 48 c7 c7 c0 a5 0f 8b 4c 89 e6 89 da e8 06 94 cf 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 b5 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:ffffc900033679f8 EFLAGS: 00010246
RAX: 022dc30304855c00 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff5200066cf34
RBP: ffff88805f046920 R08: ffffffff8e8ad9ef R09: 0000000000000000
R10: fffff5200066cef0 R11: fffffbfff1d15b3e R12: ffff8880258a9280
R13: ffff888023f2ec18 R14: ffff888023f2ec5a R15: ffff888023f2ec22
FS:  00005555693fa500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555569415a28 CR3: 000000002bc8a000 CR4: 00000000003506e0

Crashes (655):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2026/02/17 15:29 linux-6.6.y 56865d9b7074 06ec4f7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/17 04:50 linux-6.6.y 56865d9b7074 e439b951 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/17 04:47 linux-6.6.y 56865d9b7074 e439b951 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/16 14:38 linux-6.6.y ae462074fde3 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/16 10:23 linux-6.6.y ae462074fde3 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/16 10:23 linux-6.6.y ae462074fde3 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/16 01:23 linux-6.6.y 1b4ef5214f17 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/15 15:50 linux-6.6.y 1b4ef5214f17 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/15 07:15 linux-6.6.y 1b4ef5214f17 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/13 17:17 linux-6.6.y 1b4ef5214f17 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/13 04:57 linux-6.6.y 1b4ef5214f17 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/13 04:57 linux-6.6.y 1b4ef5214f17 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/12 16:07 linux-6.6.y 1b4ef5214f17 504cb1bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/12 00:14 linux-6.6.y 1b4ef5214f17 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/12 00:14 linux-6.6.y 1b4ef5214f17 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/11 14:22 linux-6.6.y 1b4ef5214f17 75707236 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/11 12:04 linux-6.6.y c56aaf1a85ae 75707236 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/11 11:54 linux-6.6.y c56aaf1a85ae 75707236 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/11 09:10 linux-6.6.y c56aaf1a85ae 441e25b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/10 23:35 linux-6.6.y c56aaf1a85ae 441e25b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/10 23:35 linux-6.6.y c56aaf1a85ae 441e25b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/10 11:22 linux-6.6.y c56aaf1a85ae 91d776d3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/09 22:54 linux-6.6.y c56aaf1a85ae 4ab09a02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/09 18:10 linux-6.6.y c56aaf1a85ae df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/09 10:45 linux-6.6.y c56aaf1a85ae df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/07 17:57 linux-6.6.y c56aaf1a85ae 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/07 00:04 linux-6.6.y c56aaf1a85ae f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/07 00:01 linux-6.6.y c56aaf1a85ae f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/06 17:20 linux-6.6.y c56aaf1a85ae 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/06 11:53 linux-6.6.y 2cf6f68313dc 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/06 11:50 linux-6.6.y 2cf6f68313dc 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/05 21:53 linux-6.6.y 2cf6f68313dc f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/05 12:03 linux-6.6.y 2cf6f68313dc 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/05 09:45 linux-6.6.y 2cf6f68313dc 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/05 09:42 linux-6.6.y 2cf6f68313dc 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/05 07:26 linux-6.6.y 2cf6f68313dc ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/04 22:08 linux-6.6.y 2cf6f68313dc ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/04 13:43 linux-6.6.y 2cf6f68313dc ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/04 07:44 linux-6.6.y 2cf6f68313dc 42b01fab .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/03 21:34 linux-6.6.y 2cf6f68313dc 42b01fab .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/03 09:14 linux-6.6.y 2cf6f68313dc 6df4c87a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2026/02/03 09:10 linux-6.6.y 2cf6f68313dc 6df4c87a .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.