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kernel BUG in gfs2_jindex_free (2)

Status: upstream: reported C repro on 2025/06/13 11:37
Subsystems: gfs2
[Documentation on labels]
Reported-by: syzbot+150563285f78ac3e9bd4@syzkaller.appspotmail.com
First crash: 264d, last: 4h04m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (6)
Title Replies (including bot) Last reply
[syzbot] Monthly gfs2 report (Feb 2026) 0 (1) 2026/02/18 13:20
[syzbot] Monthly gfs2 report (Jan 2026) 0 (1) 2026/01/19 08:18
[syzbot] Monthly gfs2 report (Dec 2025) 0 (1) 2025/12/18 10:06
[syzbot] Monthly gfs2 report (Nov 2025) 0 (1) 2025/11/17 07:50
[syzbot] Monthly gfs2 report (Oct 2025) 0 (1) 2025/10/16 08:36
[syzbot] [gfs2?] kernel BUG in gfs2_jindex_free (2) 0 (3) 2025/09/09 23:23
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in gfs2_jindex_free gfs2 -1 5 376d 373d 0/29 auto-obsoleted due to no activity on 2025/04/18 13:10
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/09/04 16:44 3h27m retest repro linux-next OK log

Sample crash report:
R13: 00007f5010631f90 R14: 000000000001d53e R15: 00007fff7fa1e3c0
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/super.c:76!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5932 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:gfs2_jindex_free+0x44e/0x450 fs/gfs2/super.c:76
Code: 23 22 ed fc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c e2 fd ff ff e8 c2 92 0c fe e9 d8 fd ff ff e8 58 02 8a 07 e8 a3 6c 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:ffffc90003227bc0 EFLAGS: 00010293
RAX: ffffffff84231f0d RBX: dead000000000122 RCX: ffff88802737dac0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc90003227c80 R08: ffff88803295ce37 R09: 1ffff1100652b9c6
R10: dffffc0000000000 R11: ffffed100652b9c7 R12: ffff88803295c908
R13: dffffc0000000000 R14: ffff8880690ee800 R15: ffff8880690ee878
FS:  0000555592a5c500(0000) GS:ffff888125464000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e1eaffee48 CR3: 000000007ca1d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_put_super+0x7d9/0x860 fs/gfs2/super.c:638
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f501059d9d7
Code: a2 c7 05 1c ed 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:00007fff7fa1d238 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5010631f90 RCX: 00007f501059d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff7fa1d2f0
RBP: 00007fff7fa1d2f0 R08: 00007fff7fa1e2f0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7fa1e380
R13: 00007f5010631f90 R14: 000000000001d53e R15: 00007fff7fa1e3c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_jindex_free+0x44e/0x450 fs/gfs2/super.c:76
Code: 23 22 ed fc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c e2 fd ff ff e8 c2 92 0c fe e9 d8 fd ff ff e8 58 02 8a 07 e8 a3 6c 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:ffffc90003227bc0 EFLAGS: 00010293
RAX: ffffffff84231f0d RBX: dead000000000122 RCX: ffff88802737dac0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc90003227c80 R08: ffff88803295ce37 R09: 1ffff1100652b9c6
R10: dffffc0000000000 R11: ffffed100652b9c7 R12: ffff88803295c908
R13: dffffc0000000000 R14: ffff8880690ee800 R15: ffff8880690ee878
FS:  0000555592a5c500(0000) GS:ffff888125564000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e1eb0090f0 CR3: 000000007ca1d000 CR4: 0000000000350ef0

Crashes (1221):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/27 00:42 upstream f4d0ec0aa20d ffa54287 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/27 09:03 upstream 3f4a08e64442 a2f13f71 .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_jindex_free
2026/02/07 06:47 upstream 2687c848e578 f20fc9f9 .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_jindex_free
2025/12/23 19:20 upstream b927546677c8 d1b870e1 .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_jindex_free
2025/12/23 18:17 upstream b927546677c8 d1b870e1 .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_jindex_free
2025/12/23 17:13 upstream b927546677c8 d1b870e1 .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_jindex_free
2025/12/23 15:56 upstream b927546677c8 d1b870e1 .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_jindex_free
2025/12/23 14:41 upstream b927546677c8 d1b870e1 .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_jindex_free
2025/12/05 04:27 upstream 6dfafbd0299a d1b870e1 .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_jindex_free
2025/12/05 03:22 upstream 6dfafbd0299a d1b870e1 .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_jindex_free
2025/09/09 23:22 upstream 9dd1835ecda5 fdeaa69b .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/01/04 14:04 linux-next cc3aa43b44bd d6526ea3 .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_jindex_free
2025/12/08 02:06 linux-next 6987d58a9cbc d6526ea3 .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_jindex_free
2025/12/07 19:00 linux-next 6987d58a9cbc d6526ea3 .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_jindex_free
2025/12/07 03:41 linux-next 6987d58a9cbc d6526ea3 .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_jindex_free
2025/11/25 19:57 linux-next 92fd6e84175b 64219f15 .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_jindex_free
2025/10/12 07:44 linux-next 2b763d465239 ff1712fe .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_jindex_free
2025/10/12 03:48 linux-next 2b763d465239 ff1712fe .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_jindex_free
2025/10/05 07:06 linux-next 47a8d4b89844 49379ee0 .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_jindex_free
2026/02/28 02:02 upstream a75cb869a8cc 2cf092b8 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/26 13:10 upstream d9d32e5bd5a4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/22 02:51 upstream d79526b89571 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/09 08:06 upstream e98f34af6116 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in gfs2_jindex_free
2026/02/27 18:58 upstream a75cb869a8cc 2cf092b8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/26 06:49 upstream d9d32e5bd5a4 e0f78d93 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/25 16:39 upstream 7dff99b35460 c162cde9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/25 06:58 upstream 7dff99b35460 787dfb7c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/24 20:29 upstream 7dff99b35460 96b1aa46 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/24 03:34 upstream 7dff99b35460 41d2fa6a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/24 02:23 upstream 7dff99b35460 41d2fa6a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/22 22:25 upstream 189f164e573e 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/22 13:31 upstream 32a92f8c8932 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/21 09:00 upstream a95f71ad3e2e 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/20 08:13 upstream 8bf22c33e7a1 17d780d6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/17 08:46 upstream 970296997869 e439b951 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/16 21:35 upstream 0f2acd3148e0 5d52cba5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2025/06/09 11:34 upstream 19272b37aa4f 4826c28e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_jindex_free
2026/02/28 21:45 linux-next 3fa5e5702a82 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/28 06:08 linux-next 3fa5e5702a82 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/28 01:37 linux-next 3fa5e5702a82 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/27 04:20 linux-next 7d6661873f6b a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/26 16:29 linux-next 877552aa8758 ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/26 03:29 linux-next 877552aa8758 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/25 20:30 linux-next 877552aa8758 df2e85d4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/25 14:49 linux-next 3ef088b0c577 df2e85d4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/25 02:45 linux-next 3ef088b0c577 787dfb7c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/24 18:41 linux-next 3ef088b0c577 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/24 14:22 linux-next 779cae956c83 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/23 14:33 linux-next d4906ae14a5f 305c0ec5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/22 09:02 linux-next d4906ae14a5f 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/22 08:50 linux-next d4906ae14a5f 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/20 19:48 linux-next d4906ae14a5f 741f5161 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/20 14:59 linux-next 44982d352c33 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/20 14:55 linux-next 44982d352c33 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/20 05:36 linux-next 44982d352c33 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/19 19:01 linux-next 44982d352c33 73a252ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/19 17:14 linux-next 44982d352c33 73a252ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/19 03:45 linux-next 50f68cc7be0a 746545b8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/18 15:31 linux-next 50f68cc7be0a 77d4d919 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/17 20:26 linux-next fe9e3edb6a21 39751c21 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/17 17:34 linux-next fe9e3edb6a21 e439b951 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/17 06:44 linux-next 350adaf7fde9 e439b951 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/16 19:43 linux-next 350adaf7fde9 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2026/02/16 18:14 linux-next 350adaf7fde9 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
2025/08/20 23:49 linux-next 5303936d609e bd178e57 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root kernel BUG in gfs2_jindex_free
* Struck through repros no longer work on HEAD.