syzbot


kernel BUG in __gfs2_glock_put (2)

Status: upstream: reported on 2026/01/04 15:38
Reported-by: syzbot+f67d11b09b95f77dda6c@syzkaller.appspotmail.com
First crash: 25d, last: 2h12m
Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in __gfs2_glock_put -1 138 115d 211d 0/3 auto-obsoleted due to no activity on 2025/12/15 10:53
upstream kernel BUG in __gfs2_glock_put (2) gfs2 -1 C 502 16d 223d 0/29 upstream: reported C repro on 2025/06/20 06:44
upstream kernel BUG in __gfs2_glock_put gfs2 -1 3 702d 706d 0/29 auto-obsoleted due to no activity on 2024/06/06 08:03
linux-6.1 kernel BUG in __gfs2_glock_put (2) -1 59 13h18m 30d 0/3 upstream: reported on 2025/12/30 10:11
linux-6.6 kernel BUG in __gfs2_glock_put -1 219 152d 210d 0/2 auto-obsoleted due to no activity on 2025/11/08 04:20

Sample crash report:
gfs2: fsid=syz:syz.s: G:  s:UN n:2/81a f: t:UN d:EX/0 a:0 v:0 r:-128 m:20 p:1
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:302!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8374 Comm: kworker/1:2H Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: glock_workqueue glock_work_func
RIP: 0010:__gfs2_glock_put+0x369/0x3c0 fs/gfs2/glock.c:302
Code: 8b 3f 48 89 de e8 07 0f ff ff eb 25 e8 20 89 de fd e9 cb fe ff ff e8 16 89 de fd 31 ff 48 89 de ba 01 00 00 00 e8 77 de ff ff <0f> 0b e8 00 89 de fd 31 f6 65 ff 0d 9f 2b 5b 7c 40 0f 94 c5 40 0f
RSP: 0018:ffffc9001a14fb88 EFLAGS: 00010246
RAX: 817b88f2e208cc00 RBX: ffff888020f89520 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52003429f64
RBP: 1ffff1100fe85015 R08: ffffc9001a14f427 R09: 0000000000000000
R10: fffff52003429f20 R11: fffff52003429e85 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807f428000 R15: ffff888020f89810
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f323d217dac CR3: 000000005ecf2000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:2634 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2711
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__gfs2_glock_put+0x369/0x3c0 fs/gfs2/glock.c:302
Code: 8b 3f 48 89 de e8 07 0f ff ff eb 25 e8 20 89 de fd e9 cb fe ff ff e8 16 89 de fd 31 ff 48 89 de ba 01 00 00 00 e8 77 de ff ff <0f> 0b e8 00 89 de fd 31 f6 65 ff 0d 9f 2b 5b 7c 40 0f 94 c5 40 0f
RSP: 0018:ffffc9001a14fb88 EFLAGS: 00010246
RAX: 817b88f2e208cc00 RBX: ffff888020f89520 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52003429f64
RBP: 1ffff1100fe85015 R08: ffffc9001a14f427 R09: 0000000000000000
R10: fffff52003429f20 R11: fffff52003429e85 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807f428000 R15: ffff888020f89810
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f323d217dac CR3: 000000005ecf2000 CR4: 00000000003506e0

Crashes (77):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/29 23:36 linux-6.6.y cbb31f77b879 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/29 11:04 linux-6.6.y cbb31f77b879 aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/28 23:13 linux-6.6.y cbb31f77b879 0adc945e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/27 22:32 linux-6.6.y cbb31f77b879 3029c699 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/27 10:31 linux-6.6.y cbb31f77b879 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/27 10:30 linux-6.6.y cbb31f77b879 9a514c2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/26 22:43 linux-6.6.y cbb31f77b879 efb3e894 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/26 10:18 linux-6.6.y cbb31f77b879 a4c52dd6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/25 21:08 linux-6.6.y cbb31f77b879 55756628 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/24 09:58 linux-6.6.y cbb31f77b879 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/23 21:49 linux-6.6.y cbb31f77b879 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/23 21:48 linux-6.6.y cbb31f77b879 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/23 21:48 linux-6.6.y cbb31f77b879 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/23 09:57 linux-6.6.y cbb31f77b879 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/23 09:55 linux-6.6.y cbb31f77b879 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 17:02 linux-6.6.y cbb31f77b879 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 17:02 linux-6.6.y cbb31f77b879 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 17:02 linux-6.6.y cbb31f77b879 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 17:00 linux-6.6.y cbb31f77b879 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 04:56 linux-6.6.y cbb31f77b879 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 04:55 linux-6.6.y cbb31f77b879 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 04:55 linux-6.6.y cbb31f77b879 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/22 04:55 linux-6.6.y cbb31f77b879 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/21 16:37 linux-6.6.y cbb31f77b879 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/21 16:36 linux-6.6.y cbb31f77b879 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/21 16:36 linux-6.6.y cbb31f77b879 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/21 16:34 linux-6.6.y cbb31f77b879 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/21 04:52 linux-6.6.y cbb31f77b879 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/21 04:45 linux-6.6.y cbb31f77b879 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/20 09:48 linux-6.6.y cbb31f77b879 06648d9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/20 09:47 linux-6.6.y cbb31f77b879 06648d9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/20 09:44 linux-6.6.y cbb31f77b879 06648d9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/19 21:38 linux-6.6.y cbb31f77b879 572effc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/19 09:35 linux-6.6.y cbb31f77b879 a9fc5226 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/19 09:28 linux-6.6.y cbb31f77b879 a9fc5226 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/19 09:28 linux-6.6.y cbb31f77b879 a9fc5226 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/17 16:37 linux-6.6.y cbb31f77b879 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/17 16:37 linux-6.6.y cbb31f77b879 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/17 16:36 linux-6.6.y cbb31f77b879 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/17 16:36 linux-6.6.y cbb31f77b879 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/16 21:50 linux-6.6.y c596736dadab 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/16 21:50 linux-6.6.y c596736dadab 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/16 21:50 linux-6.6.y c596736dadab 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/16 21:50 linux-6.6.y c596736dadab 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/16 21:50 linux-6.6.y c596736dadab 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/11 15:34 linux-6.6.y c596736dadab d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/11 15:33 linux-6.6.y c596736dadab d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/11 15:33 linux-6.6.y c596736dadab d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/11 15:33 linux-6.6.y c596736dadab d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/05 00:06 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/04 15:38 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
* Struck through repros no longer work on HEAD.