EXT4-fs error (device loop2): ext4_acquire_dquot:6953: comm syz.2.1461: Failed to acquire dquot type 0
EXT4-fs (loop2): 1 truncate cleaned up
EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11821 at fs/ext4/ext4_jbd2.c:73 ext4_journal_check_start+0x1eb/0x250 fs/ext4/ext4_jbd2.c:73
Modules linked in:
CPU: 0 PID: 11821 Comm: syz.2.1461 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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 92 e8 59 ff 41 bf fb ff ff ff eb e5 e8 85 e8 59 ff <0f> 0b eb d6 e8 7c e8 59 ff 0f 0b 43 80 7c 25 00 00 0f 85 0b ff ff
RSP: 0018:ffffc900053774d8 EFLAGS: 00010283
RAX: ffffffff822d869b RBX: ffff88806c684000 RCX: 0000000000080000
RDX: ffffc9000bae9000 RSI: 000000000001481f RDI: 0000000000014820
RBP: 0000000000000345 R08: ffff88806c686417 R09: 1ffff1100d8d0c82
R10: dffffc0000000000 R11: ffffed100d8d0c83 R12: dffffc0000000000
R13: 1ffff1100d8d08c6 R14: ffff88806c684630 R15: 0000000000000001
FS:  00007f4bd9f496c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34f23ffc CR3: 0000000025e32000 CR4: 00000000003506f0
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:3801
 do_filp_open+0x1f2/0x430 fs/namei.c:3828
 do_open_execat+0x14c/0x400 fs/exec.c:924
 open_exec+0x40/0x60 fs/exec.c:955
 bm_register_write+0x1ef/0x1560 fs/binfmt_misc.c:775
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 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: 0033:0x7f4bd8f9e019
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:00007f4bd9f49028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4bd9225fa0 RCX: 00007f4bd8f9e019
RDX: 0000000000000068 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f4bd903500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4bd9226038 R14: 00007f4bd9225fa0 R15: 00007ffddaa79068
 </TASK>