loop0: detected capacity change from 0 to 512
EXT4-fs (loop0): Encoding requested by superblock is unknown
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 10713 Comm: syz.0.1483 Not tainted 6.1.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b88/0x7680 kernel/locking/lockdep.c:5049
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 update_curr_rt+0x1c8/0x530 kernel/sched/rt.c:1079
 put_prev_task_rt+0x64/0x330 kernel/sched/rt.c:1836
 put_prev_task kernel/sched/sched.h:2213 [inline]
 put_prev_task_balance kernel/sched/core.c:5846 [inline]
 __pick_next_task kernel/sched/core.c:5881 [inline]
 pick_next_task kernel/sched/core.c:6376 [inline]
 __schedule+0x708/0x1d44 kernel/sched/core.c:6521
 preempt_schedule_common+0xf4/0x1e8 kernel/sched/core.c:6727
 preempt_schedule+0x64/0x84 kernel/sched/core.c:6751
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xa8/0xac kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 percpu_ref_kill_and_confirm+0xcc/0x150 lib/percpu-refcount.c:397
 percpu_ref_kill include/linux/percpu-refcount.h:149 [inline]
 blk_freeze_queue_start block/blk-mq.c:167 [inline]
 blk_freeze_queue+0x80/0x104 block/blk-mq.c:205
 blk_mq_freeze_queue+0x20/0x30 block/blk-mq.c:215
 __loop_clr_fd+0xc4/0x588 drivers/block/loop.c:1145
 loop_clr_fd drivers/block/loop.c:1252 [inline]
 lo_ioctl+0x1238/0x1d08 drivers/block/loop.c:1558
 blkdev_ioctl+0x408/0xb40 block/ioctl.c:619
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585