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: 62d, last: 32d
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 152d 248d 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 53d 260d 0/29 upstream: reported C repro on 2025/06/20 06:44
upstream kernel BUG in __gfs2_glock_put gfs2 -1 3 739d 743d 0/29 auto-obsoleted due to no activity on 2024/06/06 08:03
linux-6.1 kernel BUG in __gfs2_glock_put (2) -1 102 8d23h 67d 0/3 upstream: reported on 2025/12/30 10:11
linux-6.6 kernel BUG in __gfs2_glock_put -1 219 189d 247d 0/2 auto-obsoleted due to no activity on 2025/11/08 04:20

Sample crash report:
gfs2: fsid=syz:syz.0: can't get resource index inode: -2
gfs2: fsid=syz:syz.0: G:  s:UN n:2/249e f:n 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: 0 PID: 13944 Comm: syz.2.3581 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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 50 83 de fd e9 cb fe ff ff e8 46 83 de fd 31 ff 48 89 de ba 01 00 00 00 e8 77 de ff ff <0f> 0b e8 30 83 de fd 31 f6 65 ff 0d 3f 24 5b 7c 40 0f 94 c5 40 0f
RSP: 0018:ffffc9000383f568 EFLAGS: 00010246
RAX: 2ecb3a812c60ae00 RBX: ffff88805df9a4f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52000707ea0
RBP: 1ffff11005dcd015 R08: 0000000000000004 R09: 0000000000000004
R10: fffff52000707e5c R11: fffff52000707dc1 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88802ee68000 R15: ffff88805df9a7e8
FS:  00007fc4ce6cd6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8c759e6000 CR3: 0000000056dad000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 gfs2_glock_put_eventually fs/gfs2/super.c:1273 [inline]
 gfs2_evict_inode+0x68d/0x1350 fs/gfs2/super.c:1555
 evict+0x4ca/0x8d0 fs/inode.c:705
 uninit_statfs fs/gfs2/ops_fstype.c:729 [inline]
 init_journal+0x84d/0x2330 fs/gfs2/ops_fstype.c:857
 init_inodes+0xcf/0x320 fs/gfs2/ops_fstype.c:926
 gfs2_fill_super+0x17bc/0x1f30 fs/gfs2/ops_fstype.c:1266
 get_tree_bdev+0x3f3/0x520 fs/super.c:1591
 gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1344
 vfs_get_tree+0x8c/0x280 fs/super.c:1764
 do_new_mount+0x24b/0xa40 fs/namespace.c:3386
 do_mount fs/namespace.c:3726 [inline]
 __do_sys_mount fs/namespace.c:3935 [inline]
 __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc4cd79c14a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fc4ce6cce58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc4ce6ccee0 RCX: 00007fc4cd79c14a
RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007fc4ce6ccea0
RBP: 0000200000037f40 R08: 00007fc4ce6ccee0 R09: 0000000000000400
R10: 0000000000000400 R11: 0000000000000246 R12: 0000200000037f80
R13: 00007fc4ce6ccea0 R14: 0000000000037f9a R15: 0000200000000380
 </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 50 83 de fd e9 cb fe ff ff e8 46 83 de fd 31 ff 48 89 de ba 01 00 00 00 e8 77 de ff ff <0f> 0b e8 30 83 de fd 31 f6 65 ff 0d 3f 24 5b 7c 40 0f 94 c5 40 0f
RSP: 0018:ffffc9000383f568 EFLAGS: 00010246
RAX: 2ecb3a812c60ae00 RBX: ffff88805df9a4f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52000707ea0
RBP: 1ffff11005dcd015 R08: 0000000000000004 R09: 0000000000000004
R10: fffff52000707e5c R11: fffff52000707dc1 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88802ee68000 R15: ffff88805df9a7e8
FS:  00007fc4ce6cd6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97df7e1198 CR3: 0000000056dad000 CR4: 00000000003506f0

Crashes (102):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/03 09:31 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_put
2026/02/02 21:03 linux-6.6.y 2cf6f68313dc d78927dd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/02/02 21:01 linux-6.6.y 2cf6f68313dc d78927dd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/02/02 08:49 linux-6.6.y 2cf6f68313dc 018ebef2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/02/01 00:43 linux-6.6.y 2cf6f68313dc 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/31 12:25 linux-6.6.y 2cf6f68313dc afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/30 23:59 linux-6.6.y 2cf6f68313dc c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/30 10:48 linux-6.6.y 2cf6f68313dc bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in __gfs2_glock_put
2026/01/30 10:43 linux-6.6.y 2cf6f68313dc 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 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
2026/01/04 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.