hid-generic 0000:0000:0000.0001: unknown main item tag 0x0
hid-generic 0000:0000:0000.0001: hidraw0: <UNKNOWN> HID v0.00 Device [syz1] on syz0
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 22 Comm: kworker/1:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: events uhid_device_add_worker
Call trace:
 dump_backtrace+0x1c0/0x1ec 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:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 fs_reclaim_acquire+0xc4/0x124 mm/page_alloc.c:4765
 might_alloc include/linux/sched/mm.h:271 [inline]
 slab_pre_alloc_hook mm/slab.h:710 [inline]
 slab_alloc_node mm/slub.c:3279 [inline]
 kmem_cache_alloc_node+0x64/0x33c mm/slub.c:3404
 __alloc_skb+0x128/0x714 net/core/skbuff.c:505
 alloc_skb include/linux/skbuff.h:1303 [inline]
 alloc_uevent_skb+0x78/0x1e0 lib/kobject_uevent.c:290
 uevent_net_broadcast_untagged lib/kobject_uevent.c:326 [inline]
 kobject_uevent_net_broadcast+0x2c4/0x528 lib/kobject_uevent.c:409
 kobject_uevent_env+0x52c/0x850 lib/kobject_uevent.c:608
 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:657
 driver_bound+0x150/0x264 drivers/base/dd.c:420
 really_probe+0x748/0xacc drivers/base/dd.c:689
 __driver_probe_device+0x1c8/0x358 drivers/base/dd.c:805
 driver_probe_device+0x78/0x324 drivers/base/dd.c:835
 __device_attach_driver+0x290/0x4d4 drivers/base/dd.c:963
 bus_for_each_drv+0x154/0x1e4 drivers/base/bus.c:429
 __device_attach+0x2ac/0x3dc drivers/base/dd.c:1035
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1084
 bus_probe_device+0xbc/0x1c4 drivers/base/bus.c:489
 device_add+0xb04/0xefc drivers/base/core.c:3712
 hid_add_device+0x310/0x4c4 drivers/hid/hid-core.c:2801
 uhid_device_add_worker+0x4c/0xf8 drivers/hid/uhid.c:73
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850