BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 9470 Comm: syz.9.1302 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b30/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0xcc/0x13c kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:388 [inline]
 pm_runtime_set_memalloc_noio+0x48/0x200 drivers/base/power/runtime.c:226
 netdev_unregister_kobject+0x134/0x204 net/core/net-sysfs.c:1978
 unregister_netdevice_many+0x121c/0x17d0 net/core/dev.c:11161
 unregister_netdevice_queue net/core/dev.c:11067 [inline]
 unregister_netdevice include/linux/netdevice.h:3020 [inline]
 unregister_netdev+0x150/0x1c4 net/core/dev.c:11193
 slcan_close+0x118/0x150 drivers/net/can/slcan.c:663
 tty_ldisc_close drivers/tty/tty_ldisc.c:474 [inline]
 tty_ldisc_kill+0x188/0x2fc drivers/tty/tty_ldisc.c:629
 tty_ldisc_release+0x224/0x258 drivers/tty/tty_ldisc.c:803
 tty_release_struct+0x34/0xd4 drivers/tty/tty_io.c:1708
 tty_release+0xa9c/0x132c drivers/tty/tty_io.c:1880
 __fput+0x1c0/0x7f8 fs/file_table.c:311
 ____fput+0x20/0x30 fs/file_table.c:339
 task_work_run+0x12c/0x1e0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584