------------[ cut here ]------------
WARNING: CPU: 1 PID: 17713 at fs/ext4/ext4_jbd2.c:73 ext4_journal_check_start+0x1eb/0x250 fs/ext4/ext4_jbd2.c:73
Modules linked in:
CPU: 1 PID: 17713 Comm: syz.5.2792 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ext4_journal_check_start+0x1eb/0x250 fs/ext4/ext4_jbd2.c:73
Code: 48 83 c4 08 41 bf e2 ff ff ff 44 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e2 ef 59 ff 41 bf fb ff ff ff eb e5 e8 d5 ef 59 ff <0f> 0b eb d6 e8 cc ef 59 ff 0f 0b 43 80 7c 25 00 00 0f 85 0b ff ff
RSP: 0018:ffffc90003577758 EFLAGS: 00010287
RAX: ffffffff822cf59b RBX: ffff88807d966000 RCX: 0000000000080000
RDX: ffffc900123f9000 RSI: 0000000000005377 RDI: 0000000000005378
RBP: 0000000000000345 R08: ffff88802f1ea417 R09: 1ffff11005e3d482
R10: dffffc0000000000 R11: ffffed1005e3d483 R12: dffffc0000000000
R13: 1ffff1100fb2ccc6 R14: ffff88807d966630 R15: 0000000000000001
FS:  00007f21150836c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc8df77000 CR3: 00000000761f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 __ext4_journal_start_sb+0x147/0x560 fs/ext4/ext4_jbd2.c:105
 ext4_sample_last_mounted fs/ext4/file.c:837 [inline]
 ext4_file_open+0x53f/0x780 fs/ext4/file.c:866
 do_dentry_open+0x880/0x14b0 fs/open.c:929
 do_open fs/namei.c:3640 [inline]
 path_openat+0x284f/0x3270 fs/namei.c:3797
 do_filp_open+0x1f2/0x430 fs/namei.c:3824
 do_sys_openat2+0x134/0x1d0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_open fs/open.c:1445 [inline]
 __se_sys_open fs/open.c:1441 [inline]
 __x64_sys_open+0x11f/0x140 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f211419de59
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:00007f2115083028 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f2114426090 RCX: 00007f211419de59
RDX: 000000000000001a RSI: 0000000000101800 RDI: 0000200000000040
RBP: 00007f2114233e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2114426128 R14: 00007f2114426090 R15: 00007ffc4baad678
 </TASK>