hid-generic 0000:0000:0000.0001: unknown main item tag 0x0 hid-generic 0000:0000:0000.0001: hidraw0: HID v0.00 Device [syz1] on syz0 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: events uhid_device_add_worker 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+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 __wake_up_common_lock kernel/sched/wait.c:124 [inline] __wake_up_sync_key+0x3c/0x18c kernel/sched/wait.c:192 sock_def_readable+0x200/0x5b4 net/core/sock.c:3542 __netlink_sendskb net/netlink/af_netlink.c:1265 [inline] netlink_broadcast_deliver net/netlink/af_netlink.c:1401 [inline] do_one_broadcast net/netlink/af_netlink.c:1490 [inline] netlink_broadcast_filtered+0xbcc/0x1164 net/netlink/af_netlink.c:1535 netlink_broadcast+0x50/0x68 net/netlink/af_netlink.c:1559 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline] kobject_uevent_net_broadcast+0x33c/0x548 lib/kobject_uevent.c:410 kobject_uevent_env+0x528/0x884 lib/kobject_uevent.c:608 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:656 driver_bound+0x104/0x1a4 drivers/base/dd.c:422 really_probe+0x6d0/0x944 drivers/base/dd.c:709 __driver_probe_device+0x180/0x2d4 drivers/base/dd.c:801 driver_probe_device+0x78/0x330 drivers/base/dd.c:831 __device_attach_driver+0x290/0x4e0 drivers/base/dd.c:959 bus_for_each_drv+0x220/0x2b4 drivers/base/bus.c:462 __device_attach+0x26c/0x388 drivers/base/dd.c:1031 device_initial_probe+0x24/0x34 drivers/base/dd.c:1080 bus_probe_device+0x178/0x240 drivers/base/bus.c:537 device_add+0x71c/0xa60 drivers/base/core.c:3689 hid_add_device+0x310/0x4c8 drivers/hid/hid-core.c:2923 uhid_device_add_worker+0x4c/0xf8 drivers/hid/uhid.c:73 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844