------------[ cut here ]------------
WARNING: CPU: 1 PID: 9178 at fs/ext4/ext4_jbd2.c:76 ext4_journal_check_start+0x24f/0x2b0 fs/ext4/ext4_jbd2.c:76
Modules linked in:
CPU: 1 UID: 0 PID: 9178 Comm: syz.5.764 Tainted: G        W           6.17.0-rc1-syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ext4_journal_check_start+0x24f/0x2b0 fs/ext4/ext4_jbd2.c:76
Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d6 42 5c ff 41 bf fb ff ff ff eb e0 e8 c9 42 5c ff eb d3 e8 c2 42 5c ff 90 <0f> 0b 90 eb c8 e8 b7 42 5c ff 90 0f 0b 90 43 80 7c 25 00 00 0f 85
RSP: 0018:ffffc9000cc8f578 EFLAGS: 00010283
RAX: ffffffff8262189e RBX: ffff8880300b4000 RCX: 0000000000080000
RDX: ffffc9001c301000 RSI: 0000000000000661 RDI: 0000000000000662
RBP: 0000000000000365 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1006016c71 R12: dffffc0000000000
R13: 1ffff110060168f4 R14: ffff8880300b47a0 R15: 0000000000000001
FS:  00007f088535d6c0(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdfe99c2000 CR3: 00000000364c6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __ext4_journal_start_sb+0x16b/0x5c0 fs/ext4/ext4_jbd2.c:108
 ext4_sample_last_mounted fs/ext4/file.c:869 [inline]
 ext4_file_open+0x732/0xa40 fs/ext4/file.c:901
 do_dentry_open+0x9ae/0x1350 fs/open.c:965
 vfs_open+0x3b/0x350 fs/open.c:1095
 do_open fs/namei.c:3887 [inline]
 path_openat+0x2ef1/0x3840 fs/namei.c:4046
 do_file_open_root+0x304/0x5a0 fs/namei.c:4098
 file_open_root+0x15d/0x1b0 fs/open.c:1414
 do_handle_open+0x7f2/0x890 fs/fhandle.c:413
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f088711ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f088535d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f0887346090 RCX: 00007f088711ebe9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f08871a1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0887346128 R14: 00007f0887346090 R15: 00007ffc7752f748
 </TASK>