kernel BUG in gfs2_quota_cleanup (3)

Status: upstream: reported C repro on 2025/11/27 17:40
Subsystems: gfs2
Labels: prio:normal
[Documentation on labels]
Reported-by: syzbot+af4d53576692f8956fd6@syzkaller.appspotmail.com
First crash: 302d, last: 2d05h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
c13c411b assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ✅ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ kernel BUG in gfs2_quota_cleanup (3) 2026/05/31 02:04 2026/05/31 02:04 2026/05/31 02:56 6b4a8443
ad42cae4 assessment-security 💥 kernel BUG in gfs2_quota_cleanup (3) 2026/05/14 13:36 2026/05/14 13:36 2026/05/14 13:37 6ccb967e
▶ ▼ Discussions (6)
Title Replies (including bot) Last reply
[syzbot] Monthly gfs2 report (Aug 2026) 0 (1) 2026/08/25 12:32
[syzbot] Monthly gfs2 report (Jul 2026) 0 (1) 2026/07/25 04:32
[syzbot] Monthly gfs2 report (Jun 2026) 0 (1) 2026/06/23 20:32
[syzbot] Monthly gfs2 report (May 2026) 0 (1) 2026/05/23 12:32
[syzbot] [gfs2?] kernel BUG in gfs2_quota_cleanup (3) 1 (3) 2025/11/29 12:06
[PATCH] gfs2: replace BUG_ON with WARN_ON_ONCE in gfs2_quota_cleanup 2 (2) 2025/11/28 06:07
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in gfs2_quota_cleanup (2) gfs2 -1 2 464d 478d 0/29 auto-obsoleted due to no activity on 2025/09/22 04:04
upstream kernel BUG in gfs2_quota_cleanup gfs2 -1 syz, C done 4 1007d 1107d 25/29 fixed on 2024/01/30 15:47
▶ ▼ Last patch testing requests (4)
Created Duration User Patch Repo Result
2025/12/08 04:19 18m retest repro linux-next report log
2025/12/08 04:19 27m retest repro linux-next report log
2025/12/08 04:19 54m retest repro linux-next report log
2025/11/29 10:11 1h15m ssranevjti@gmail.com patch upstream OK log

Sample crash report:
R13: 00007f42f6216038 R14: 00007f42f6215fa0 R15: 00007ffe01899008
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:1521!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5536 Comm: syz.0.21 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:gfs2_quota_cleanup+0x75e/0x760 fs/gfs2/quota.c:1520
Code: ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b fd ff ff 4c 89 f7 e8 12 29 0e fe e9 4e fd ff ff e8 e8 34 8c 07 e8 a3 5c a2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc900037efa40 EFLAGS: 00010293
RAX: ffffffff84234c7d RBX: 0000000000000002 RCX: ffff88803506a4c0
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc900037efb50 R08: ffff888011bc40af R09: 1ffff11002378815
R10: dffffc0000000000 R11: ffffed1002378816 R12: 1ffff920006fdf4c
R13: ffff888012556800 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f42f6e616c0(0000) GS:ffff88808ca58000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d1b152000 CR3: 0000000011b30000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_make_fs_ro+0x2a0/0x320 fs/gfs2/super.c:568
 gfs2_reconfigure+0x6a5/0xb20 fs/gfs2/ops_fstype.c:1594
 reconfigure_super+0x227/0x8a0 fs/super.c:1080
 do_remount fs/namespace.c:3391 [inline]
 path_mount+0xdc5/0x10e0 fs/namespace.c:4151
 do_mount fs/namespace.c:4172 [inline]
 __do_sys_mount fs/namespace.c:4361 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4338
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f42f5f9c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f42f6e61028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f42f6215fa0 RCX: 00007f42f5f9c799
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f42f6032bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000003376039 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f42f6216038 R14: 00007f42f6215fa0 R15: 00007ffe01899008
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_quota_cleanup+0x75e/0x760 fs/gfs2/quota.c:1520
Code: ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b fd ff ff 4c 89 f7 e8 12 29 0e fe e9 4e fd ff ff e8 e8 34 8c 07 e8 a3 5c a2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc900037efa40 EFLAGS: 00010293
RAX: ffffffff84234c7d RBX: 0000000000000002 RCX: ffff88803506a4c0
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc900037efb50 R08: ffff888011bc40af R09: 1ffff11002378815
R10: dffffc0000000000 R11: ffffed1002378816 R12: 1ffff920006fdf4c
R13: ffff888012556800 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f42f6e616c0(0000) GS:ffff88808ca58000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d1b152000 CR3: 0000000011b30000 CR4: 0000000000352ef0

Crashes (168):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/04 09:08 upstream 0031c06807cf 4180d919 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2025/11/24 03:11 linux-next d724c6f85e80 4fb8ef37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2025/11/23 20:32 linux-next d724c6f85e80 4fb8ef37 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2025/11/24 00:30 linux-next d724c6f85e80 4fb8ef37 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2026/08/18 01:47 upstream 8d3ae59288f1 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2026/08/08 22:16 upstream a59f57e2aa12 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2026/07/17 14:11 upstream fce2dfa773ce 7f27c57a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2026/07/17 01:41 upstream 37e2f878a7a6 8f30cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2026/07/17 01:32 upstream 37e2f878a7a6 8f30cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_quota_cleanup
2026/03/30 18:19 upstream 7aaa8047eafd 458630d8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in gfs2_quota_cleanup
2026/09/19 17:05 upstream 40288c9206c1 853b104b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/18 17:08 upstream 5dd1818b15d9 853b104b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/17 20:37 upstream 4982d3552a3b 4a607247 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/17 12:53 upstream 238650ef6c7c 4a607247 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/15 10:25 upstream 587858367581 81a27d1a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/14 10:02 upstream 704340f1cd0d 70a60e12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/14 05:12 upstream d681d7ef617e 70a60e12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/12 14:10 upstream 5225b8eec4c9 70a60e12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/12 07:40 upstream 827751b699b7 70a60e12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/09/04 06:49 upstream 8ab1afb2eb24 801f0966 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/08/30 16:11 upstream 08dbfad3f504 2f52988a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/08/13 07:51 upstream 3d6d817622b0 359b2492 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/08/01 02:49 upstream a2cf4ef33184 e611ffe1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/19 05:17 upstream f2ec6312bf71 72524a66 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/13 16:36 upstream a13c140cc289 a870962e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/06 15:44 upstream 8cdeaa50eae8 88b240e4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/04 08:53 upstream 71dfdfb0209b fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/03 18:19 upstream d2c9a99135da aa437a8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/02 12:40 upstream 4a50a141f05a 27192279 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/02 08:10 upstream 4a50a141f05a 27192279 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/01 15:14 upstream 665159e24674 5fb9973c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/01 04:37 upstream dc59e4fea9d8 00a5cf1c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/07/01 02:03 upstream dc59e4fea9d8 00a5cf1c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/30 02:36 upstream dc59e4fea9d8 fff8d0a0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/29 21:12 upstream dc59e4fea9d8 6a0c72dc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/29 12:13 upstream dc59e4fea9d8 6a0c72dc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/28 10:04 upstream 780d569e6c4b fb92f11c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/28 07:22 upstream 780d569e6c4b fb92f11c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/27 01:54 upstream 51cb1aa1250c fb92f11c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/24 17:33 upstream 840ef6c78e6a c1da772e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/24 05:37 upstream f31c00c377cc 042555ff .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/22 00:46 upstream 8cd8cf7a07e5 43bfcdb0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/20 02:47 upstream a975094bf98c 43bfcdb0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/17 08:14 upstream 6b5a2b7d9bc1 62cc6db3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/15 20:55 upstream 95e56f0f293e c700a26e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/15 03:30 upstream e21ee273e6fa 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/15 01:00 upstream e21ee273e6fa 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/12 08:10 upstream 2b414a95b8f7 e93da63e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/09 07:08 upstream 2d3090a8aeb5 656e94c6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/07 05:12 upstream 8e65320d91cd cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/07 04:06 upstream 8e65320d91cd cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/06 19:06 upstream 8e65320d91cd cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/06 15:41 upstream 8e65320d91cd cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/06/05 04:23 upstream 9154c4af7829 197909be .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_quota_cleanup
2026/04/15 03:06 linux-next e6efabc0afca e2e976a8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_quota_cleanup
* Struck through repros no longer work on HEAD.