------------[ cut here ]------------
WARNING: CPU: 1 PID: 11235 at kernel/locking/lockdep.c:896 look_up_lock_class+0xa0/0x120 kernel/locking/lockdep.c:895
Modules linked in:
CPU: 1 PID: 11235 Comm: syz-executor.4 Not tainted 5.15.151-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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 ef a8 8f 49 39 06 74 2a <0f> 0b eb 26 e8 a7 96 e8 f9 48 c7 c7 00 36 8b 8a 89 de e8 32 d5 fe
RSP: 0018:ffffc90003177630 EFLAGS: 00010002
RAX: ffffffff8fa8efc0 RBX: ffffffff8f94c500 RCX: ffff88803f1b1dc0
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff888072b32060
RBP: ffffc90003177730 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: 1ffff9200062eed4 R14: ffff888072b32060 R15: ffffffff914eec41
FS:  00007f03071e26c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb32e9de198 CR3: 000000001a0b1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0xa0/0x180 kernel/locking/rwsem.c:1657
 swap_inode_boot_loader fs/ext4/ioctl.c:176 [inline]
 __ext4_ioctl fs/ext4/ioctl.c:1056 [inline]
 ext4_ioctl+0x3dec/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+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f0308c82da9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f03071e20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0308db1050 RCX: 00007f0308c82da9
RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000006
RBP: 00007f0308ccf47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0308db1050 R15: 00007ffe65e8b378
 </TASK>