BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 17581 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c 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:3777 [inline]
 validate_chain kernel/locking/lockdep.c:3798 [inline]
 __lock_acquire+0x1864/0x6634 kernel/locking/lockdep.c:5063
 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5676
 _raw_spin_lock_nested+0x5c/0x78 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested kernel/sched/core.c:538 [inline]
 raw_spin_rq_lock kernel/sched/sched.h:1362 [inline]
 rq_lock kernel/sched/sched.h:1652 [inline]
 ttwu_queue kernel/sched/core.c:3903 [inline]
 try_to_wake_up+0x3f0/0xcb4 kernel/sched/core.c:4228
 wake_up_process kernel/sched/core.c:4362 [inline]
 wake_up_q+0x98/0x108 kernel/sched/core.c:1010
 rwsem_wake+0xec/0x164 kernel/locking/rwsem.c:1225
 __up_write kernel/locking/rwsem.c:1379 [inline]
 up_write+0x2dc/0x5c0 kernel/locking/rwsem.c:1626
 kernfs_remove_by_name_ns+0x124/0x184 fs/kernfs/dir.c:1671
 kernfs_remove_by_name include/linux/kernfs.h:622 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0xf4/0x278 fs/sysfs/group.c:288
 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:312
 device_remove_groups drivers/base/core.c:2759 [inline]
 device_remove_attrs+0x188/0x238 drivers/base/core.c:2973
 device_del+0x578/0x990 drivers/base/core.c:3899
 netdev_unregister_kobject+0x13c/0x204 net/core/net-sysfs.c:1985
 unregister_netdevice_many_notify+0x1300/0x1900 net/core/dev.c:11051
 unregister_netdevice_many net/core/dev.c:11077 [inline]
 unregister_netdevice_queue+0x2bc/0x310 net/core/dev.c:10960
 unregister_netdevice include/linux/netdevice.h:3075 [inline]
 nsim_destroy+0x58/0x164 drivers/net/netdevsim/netdev.c:382
 __nsim_dev_port_del+0x14c/0x1b0 drivers/net/netdevsim/dev.c:1433
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1445 [inline]
 nsim_dev_reload_destroy+0x238/0x434 drivers/net/netdevsim/dev.c:1663
 nsim_drv_remove+0x64/0x16c drivers/net/netdevsim/dev.c:1679
 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:246
 device_remove drivers/base/dd.c:547 [inline]
 __device_release_driver drivers/base/dd.c:1279 [inline]
 device_release_driver_internal+0x3d4/0x6e4 drivers/base/dd.c:1305
 device_release_driver+0x28/0x38 drivers/base/dd.c:1328
 bus_remove_device+0x294/0x384 drivers/base/bus.c:531
 device_del+0x580/0x990 drivers/base/core.c:3900
 device_unregister+0x2c/0xc8 drivers/base/core.c:3943
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
 del_device_store+0x288/0x330 drivers/net/netdevsim/bus.c:219
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x1f8/0x274 fs/sysfs/file.c:140
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 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