------------[ cut here ]------------
WARNING: CPU: 0 PID: 6473 at kernel/locking/lockdep.c:896 look_up_lock_class+0x134/0x13c
Modules linked in:
CPU: 0 PID: 6473 Comm: syz.4.602 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : look_up_lock_class+0x134/0x13c
lr : look_up_lock_class+0x74/0x13c
sp : ffff8000206b7140
x29: ffff8000206b7140 x28: dfff800000000000 x27: 0000000000000001
x26: ffff80001b7d4d20 x25: ffff80001b7d4000 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000000 x21: ffff80001b8fe661
x20: ffff0000e03a3450 x19: ffff80001735ae40 x18: 0000000000000000
x17: 0000000000000002 x16: ffff8000082ec988 x15: 0000000020000000
x14: 1ffff0000296c06c x13: ffff8000206b7300 x12: dfff800000000000
x11: ffff8000082efed8 x10: ffff800014b6035c x9 : ffff800017478d00
x8 : ffff80001b8fe660 x7 : ffff800008deb88c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000001
Call trace:
 look_up_lock_class+0x134/0x13c
 register_lock_class+0x90/0x6a4 kernel/locking/lockdep.c:1245
 __lock_acquire+0x184/0x7638 kernel/locking/lockdep.c:4891
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623
 down_write_nested+0xc0/0x130 kernel/locking/rwsem.c:1667
 ext4_double_down_write_data_sem+0x3c/0x4c
 ext4_move_extents+0x2b4/0xb4c fs/ext4/move_extent.c:609
 __ext4_ioctl fs/ext4/ioctl.c:990 [inline]
 ext4_ioctl+0x32f8/0x61bc fs/ext4/ioctl.c:1276
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 79
hardirqs last  enabled at (79): [<ffff8000088d6820>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (78): [<ffff8000088d67e0>] kasan_quarantine_put+0x9c/0x204 mm/kasan/quarantine.c:204
softirqs last  enabled at (8): [<ffff8000080308b0>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (6): [<ffff80000803087c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace b458cf1de515dd85 ]---