BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 9766 Comm: syz.9.1168 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868
 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:382
 raw_spin_rq_lock_nested+0x2c/0x44 kernel/sched/core.c:667
 raw_spin_rq_lock kernel/sched/sched.h:1653 [inline]
 rq_lock kernel/sched/sched.h:1991 [inline]
 __schedule+0x39c/0x2d80 kernel/sched/core.c:7108
 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7413
 preempt_schedule+0x60/0x78 kernel/sched/core.c:7437
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
 _raw_spin_unlock_irqrestore+0x94/0x98 kernel/locking/spinlock.c:198
 spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
 __wake_up_common_lock+0x5c/0x78 kernel/sched/wait.c:127
 __wake_up_sync_key+0x20/0x2c kernel/sched/wait.c:192
 sock_def_readable+0x208/0x6f4 net/core/sock.c:3659
 __netlink_sendskb+0xa8/0xd0 net/netlink/af_netlink.c:1264
 netlink_broadcast_deliver net/netlink/af_netlink.c:1400 [inline]
 do_one_broadcast net/netlink/af_netlink.c:1494 [inline]
 netlink_broadcast_filtered+0x940/0xd58 net/netlink/af_netlink.c:1539
 netlink_broadcast+0x50/0x68 net/netlink/af_netlink.c:1563
 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline]
 kobject_uevent_net_broadcast+0x33c/0x53c lib/kobject_uevent.c:410
 kobject_uevent_env+0x518/0x944 lib/kobject_uevent.c:611
 drm_sysfs_lease_event+0x10c/0x158 drivers/gpu/drm/drm_sysfs.c:430
 drm_lease_destroy+0x284/0x380 drivers/gpu/drm/drm_lease.c:293
 drm_master_destroy drivers/gpu/drm/drm_auth.c:409 [inline]
 kref_put include/linux/kref.h:65 [inline]
 drm_master_put+0xf4/0x208 drivers/gpu/drm/drm_auth.c:427
 drm_master_release+0x234/0x2d0 drivers/gpu/drm/drm_auth.c:362
 drm_file_free+0x610/0x864 drivers/gpu/drm/drm_file.c:264
 drm_close_helper+0x15c/0x178 drivers/gpu/drm/drm_file.c:290
 drm_release+0x168/0x284 drivers/gpu/drm/drm_file.c:438
 __fput+0x338/0x74c fs/file_table.c:512
 ____fput+0x20/0x30 fs/file_table.c:540
 task_work_run+0x1cc/0x25c kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x10c/0x17c kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 arm64_syscall_exit_to_user_mode arch/arm64/kernel/entry-common.c:88 [inline]
 el0_svc+0x18c/0x260 arch/arm64/kernel/entry-common.c:739
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:757
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590