loop0: detected capacity change from 0 to 512 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4185 at kernel/locking/lockdep.c:896 look_up_lock_class+0x134/0x13c Modules linked in: CPU: 1 PID: 4185 Comm: syz-executor254 Not tainted 5.15.118-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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 : ffff80001cf370c0 x29: ffff80001cf370c0 x28: dfff800000000000 x27: 0000000000000001 x26: ffff8000183e0d20 x25: ffff8000183e0000 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000000 x21: ffff80001850a661 x20: ffff0000dbfc3450 x19: ffff80001702f540 x18: 0000000000000000 x17: ff80800008d9cef4 x16: ffff8000082ea840 x15: 0000000020000080 x14: 1ffff0000291e06a x13: ffff80001cf37280 x12: dfff800000000000 x11: ffff8000082ede34 x10: ffff8000148f034c x9 : ffff8000171a7d00 x8 : ffff80001850a660 x7 : ffff800008dd7950 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+0x184/0x7620 kernel/locking/lockdep.c:4890 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 down_write_nested+0x118/0x26c kernel/locking/rwsem.c:1657 ext4_double_down_write_data_sem+0x3c/0x4c ext4_move_extents+0x2b0/0xb6c fs/ext4/move_extent.c:610 __ext4_ioctl fs/ext4/ioctl.c:987 [inline] ext4_ioctl+0x3314/0x6190 fs/ext4/ioctl.c:1273 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:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 5067 hardirqs last enabled at (5067): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (5066): [] kasan_quarantine_put+0x9c/0x204 mm/kasan/quarantine.c:204 softirqs last enabled at (5044): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (5042): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 66664e3e4a8206b6 ]---