------------[ cut here ]------------
WARNING: CPU: 0 PID: 5540 at kernel/locking/lockdep.c:896 look_up_lock_class+0xa0/0x120 kernel/locking/lockdep.c:895
Modules linked in:
CPU: 0 PID: 5540 Comm: syz.0.342 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:look_up_lock_class+0xa0/0x120 kernel/locking/lockdep.c:895
Code: 00 48 85 db 74 4c 4c 39 7b 40 74 05 48 8b 1b eb eb 48 8b 83 b0 00 00 00 49 3b 46 18 74 36 48 c7 c0 c0 2f 2d 90 49 39 06 74 2a <0f> 0b eb 26 e8 a7 09 d2 f9 48 c7 c7 80 4b 8b 8a 89 de e8 89 cf fe
RSP: 0018:ffffc9000111f510 EFLAGS: 00010006
RAX: ffffffff902d2fc0 RBX: ffffffff90153c00 RCX: ffff88807e183b80
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff88807383c840
RBP: ffffc9000111f610 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: 1ffff92000223eb0 R14: ffff88807383c840 R15: ffffffff96991c81
FS:  00007f7e473646c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5c2ff742d8 CR3: 0000000066b0a000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 register_lock_class+0x100/0x9a0 kernel/locking/lockdep.c:1245
 __lock_acquire+0xd7/0x1ff0 kernel/locking/lockdep.c:4891
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 down_write_nested+0x3b/0x60 kernel/locking/rwsem.c:1667
 ext4_move_extents+0x3a1/0xe50 fs/ext4/move_extent.c:609
 __ext4_ioctl fs/ext4/ioctl.c:990 [inline]
 ext4_ioctl+0x2fcb/0x5b80 fs/ext4/ioctl.c:1276
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7e48eebff9
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:00007f7e47364038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7e490a3f80 RCX: 00007f7e48eebff9
RDX: 0000000020000000 RSI: 00000000c028660f RDI: 0000000000000004
RBP: 00007f7e48f5e296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7e490a3f80 R15: 00007ffdf6c4a938
 </TASK>