general protection fault in jbd2_journal_dirty_metadata (2)

Status: fixed on 2026/07/15 08:27
Subsystems: ext4
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+98f651460e558a21baae@syzkaller.appspotmail.com
Fix commit: 8fc197cf366b jbd2: check for aborted handle in jbd2_journal_dirty_metadata()
First crash: 100d, last: 55d
Cause bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Patch Versions (1)
Version Stage Reported Report Link Job
1 moderation 2026/05/08 19:15 Discussion 9fdbcebe-429f-435d-b0ac-745149fbe5b1
▶ ▼ ✨ AI Jobs (10)
ID Workflow Result Correct Bug Created Started Finished Revision
bad2d86a assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ✅ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/25 19:49 2026/05/25 19:49 2026/05/25 20:47 c69befb3
fdc75d5f patch-iteration 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/10 23:24 2026/05/10 23:24 2026/05/10 23:27 29233ece
fa79e2cc patch-iteration ❓ general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/10 23:15 2026/05/10 23:15 2026/05/10 23:24 29233ece
477a1e77 patch-iteration 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/10 03:58 2026/05/10 03:58 2026/05/10 03:59 29233ece
3d7af723 patch-iteration 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/09 15:05 2026/05/09 15:05 2026/05/09 15:41 29233ece
2c1e0b0c patch-iteration 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/09 08:59 2026/05/09 08:59 2026/05/09 09:05 29233ece
357cf0d8 patch-iteration 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/09 07:58 2026/05/09 07:58 2026/05/09 07:59 29233ece
9fdbcebe patching ❓ general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/08 17:02 2026/05/08 17:02 2026/05/08 19:15 4951913a
93661df8 patching 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/08 07:29 2026/05/08 07:29 2026/05/08 08:34 5633175a
9e0f3db5 assessment-security 💥 general protection fault in jbd2_journal_dirty_metadata (2) 2026/05/08 05:46 2026/05/08 05:46 2026/05/08 07:29 5633175a
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[PATCH] jbd2: check for aborted handle in jbd2_journal_dirty_metadata() 6 (6) 2026/06/04 14:45
[syzbot] [ocfs2?] [ext4?] general protection fault in jbd2_journal_dirty_metadata (2) 0 (2) 2026/05/04 23:52
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in jbd2_journal_dirty_metadata ext4 2 syz 9 464d 469d 29/29 fixed on 2025/07/08 00:33
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/05/04 23:52 1h00m kartikey406@gmail.com patch upstream OK log

Sample crash report:
(syz.2.23,6028,0):__ocfs2_remove_xattr_range:786 ERROR: status = -30
(syz.2.23,6028,0):ocfs2_xattr_shrink_size:840 ERROR: status = -30
(syz.2.23,6028,0):__ocfs2_journal_access:724 ERROR: Error -30 getting 1 access to buffer!
(syz.2.23,6028,0):ocfs2_xa_prepare_entry:2182 ERROR: status = -30
(syz.2.23,6028,0):ocfs2_xa_set:2285 ERROR: status = -30
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 6028 Comm: syz.2.23 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:jbd2_journal_dirty_metadata+0x4a/0xd30 fs/jbd2/transaction.c:1520
Code: 00 fc ff df e8 07 27 29 ff 4c 89 fd 48 c1 ed 03 42 80 7c 35 00 00 74 08 4c 89 ff e8 f0 61 94 ff 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 d7 61 94 ff 48 89 1c 24 4c 8b 2b
RSP: 0018:ffffc90003766bc0 EFLAGS: 00010256
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888035c3dc40
RDX: 0000000000000000 RSI: ffff88805927b9f8 RDI: ffff888034ddbf20
RBP: 1ffff110069bb7e4 R08: ffffffff9030a1f7 R09: 1ffffffff206143e
R10: dffffc0000000000 R11: fffffbfff206143f R12: dffffc0000000000
R13: 1ffff920006ecd94 R14: dffffc0000000000 R15: ffff888034ddbf20
FS:  000055556c64d500(0000) GS:ffff888125290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ff9c72700 CR3: 000000007908f000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ocfs2_journal_dirty+0x130/0x700 fs/ocfs2/journal.c:831
 ocfs2_xa_journal_dirty fs/ocfs2/xattr.c:1483 [inline]
 ocfs2_xa_set+0x15e3/0x2ec0 fs/ocfs2/xattr.c:2294
 ocfs2_xattr_block_set+0x3e0/0x33c0 fs/ocfs2/xattr.c:3016
 __ocfs2_xattr_set_handle+0x6b3/0xf50 fs/ocfs2/xattr.c:3418
 ocfs2_xattr_set+0xf3f/0x13e0 fs/ocfs2/xattr.c:3681
 __vfs_setxattr+0x43c/0x480 fs/xattr.c:218
 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:252
 vfs_setxattr+0x163/0x360 fs/xattr.c:339
 do_setxattr fs/xattr.c:654 [inline]
 filename_setxattr+0x296/0x630 fs/xattr.c:682
 path_setxattrat+0x3eb/0x440 fs/xattr.c:726
 __do_sys_setxattr fs/xattr.c:760 [inline]
 __se_sys_setxattr fs/xattr.c:756 [inline]
 __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:756
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ff9d9cdd9
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:00007ffd9c92e118 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f8ffa015fa0 RCX: 00007f8ff9d9cdd9
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000200000000080
RBP: 00007f8ff9e32d69 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ffa015fac R14: 00007f8ffa015fa0 R15: 00007f8ffa015fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:jbd2_journal_dirty_metadata+0x4a/0xd30 fs/jbd2/transaction.c:1520
Code: 00 fc ff df e8 07 27 29 ff 4c 89 fd 48 c1 ed 03 42 80 7c 35 00 00 74 08 4c 89 ff e8 f0 61 94 ff 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 d7 61 94 ff 48 89 1c 24 4c 8b 2b
RSP: 0018:ffffc90003766bc0 EFLAGS: 00010256
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888035c3dc40
RDX: 0000000000000000 RSI: ffff88805927b9f8 RDI: ffff888034ddbf20
RBP: 1ffff110069bb7e4 R08: ffffffff9030a1f7 R09: 1ffffffff206143e
R10: dffffc0000000000 R11: fffffbfff206143f R12: dffffc0000000000
R13: 1ffff920006ecd94 R14: dffffc0000000000 R15: ffff888034ddbf20
FS:  000055556c64d500(0000) GS:ffff888125290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557909eb6950 CR3: 000000007908f000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	e8 07 27 29 ff       	call   0xff29270c
   5:	4c 89 fd             	mov    %r15,%rbp
   8:	48 c1 ed 03          	shr    $0x3,%rbp
   c:	42 80 7c 35 00 00    	cmpb   $0x0,0x0(%rbp,%r14,1)
  12:	74 08                	je     0x1c
  14:	4c 89 ff             	mov    %r15,%rdi
  17:	e8 f0 61 94 ff       	call   0xff94620c
  1c:	49 8b 1f             	mov    (%r15),%rbx
  1f:	48 89 d8             	mov    %rbx,%rax
  22:	48 c1 e8 03          	shr    $0x3,%rax
* 26:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2b:	74 08                	je     0x35
  2d:	48 89 df             	mov    %rbx,%rdi
  30:	e8 d7 61 94 ff       	call   0xff94620c
  35:	48 89 1c 24          	mov    %rbx,(%rsp)
  39:	4c 8b 2b             	mov    (%rbx),%r13

Crashes (28):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/01 08:01 upstream 08d0d3466664 753c55b9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-kasan-gce-root general protection fault in jbd2_journal_dirty_metadata
2026/05/01 06:59 upstream 08d0d3466664 753c55b9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-kasan-gce-root general protection fault in jbd2_journal_dirty_metadata
2026/05/01 05:55 upstream 08d0d3466664 753c55b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in jbd2_journal_dirty_metadata
2026/06/15 01:43 upstream e21ee273e6fa 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/06/08 21:27 upstream 2d3090a8aeb5 656e94c6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/06/08 02:27 upstream 33d8d8ec31b5 cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/06/05 06:04 upstream 9154c4af7829 197909be .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/06/01 15:04 upstream e43ffb69e043 8d8eeb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/29 15:32 upstream 8fde5d1d47f6 a3d70215 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/28 20:27 upstream eb3f4b7426cf 9a5a7e5e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/28 17:11 upstream eb3f4b7426cf 9a5a7e5e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/28 05:53 upstream eb3f4b7426cf 4c36e7e5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/23 12:26 upstream cca95436be15 c69befb3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/23 11:02 upstream cca95436be15 c69befb3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/22 20:43 upstream 6779b50faa56 e16cf9f3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/16 06:29 upstream d458a240344c 81fb92f3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/15 16:16 upstream 70eda68668d1 9cd3beaa .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/15 16:16 upstream 70eda68668d1 9cd3beaa .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/15 15:01 upstream 70eda68668d1 9cd3beaa .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/11 03:58 upstream aa54b1d27fe0 29233ece .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/10 23:34 upstream aa54b1d27fe0 29233ece .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/10 07:01 upstream 1bfaee9d3351 29233ece .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/08 02:51 upstream fcee7d82f27d e358bca5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/05 17:37 upstream a293ec25d59d 06e69a27 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/03 21:55 upstream f377d0025eb0 a0d91488 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/02 00:22 upstream 6fe0be6dc7fa 753c55b9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/01 15:24 upstream 26fd6bff2c05 753c55b9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
2026/05/01 12:27 upstream 26fd6bff2c05 753c55b9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in jbd2_journal_dirty_metadata
* Struck through repros no longer work on HEAD.