INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 4234 Comm: kworker/1:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events p9_write_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 assign_lock_key+0x1ec/0x200 kernel/locking/lockdep.c:937
 register_lock_class+0x21d/0x880 kernel/locking/lockdep.c:1250
 __lock_acquire+0x16f/0x7b50 kernel/locking/lockdep.c:4891
 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 gsmld_write+0x57/0x120 drivers/tty/n_gsm.c:3138
 do_tty_write drivers/tty/tty_io.c:1038 [inline]
 file_tty_write+0x50c/0x8a0 drivers/tty/tty_io.c:1110
 __kernel_write+0x522/0x980 fs/read_write.c:539
 kernel_write+0xcd/0x1f0 fs/read_write.c:568
 p9_fd_write net/9p/trans_fd.c:436 [inline]
 p9_write_work+0x574/0xce0 net/9p/trans_fd.c:487
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
usb 3-1: new high-speed USB device number 5 using dummy_hcd
usb 3-1: Using ep0 maxpacket: 16
usb 3-1: config index 0 descriptor too short (expected 16456, got 72)
usb 3-1: config 0 has an invalid interface number: 125 but max is 1
usb 3-1: config 0 has an invalid interface number: 125 but max is 1
usb 3-1: config 0 has an invalid interface number: 125 but max is 1
usb 3-1: config 0 has 1 interface, different from the descriptor's value: 2
usb 3-1: config 0 has no interface number 0
usb 3-1: config 0 interface 125 altsetting 4 endpoint 0x4 has invalid maxpacket 21760, setting to 64
usb 3-1: config 0 interface 125 altsetting 4 endpoint 0xB has invalid wMaxPacketSize 0
usb 3-1: config 0 interface 125 altsetting 4 endpoint 0x2 has invalid wMaxPacketSize 0
usb 3-1: config 0 interface 125 altsetting 1 has 0 endpoint descriptors, different from the interface descriptor's value: 1
usb 3-1: config 0 interface 125 has no altsetting 0
usb 3-1: config 0 interface 125 has no altsetting 2
usb 3-1: New USB device found, idVendor=050d, idProduct=0002, bcdDevice=23.27
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-1: Product: syz
usb 3-1: Manufacturer: syz
usb 3-1: SerialNumber: syz
usb 3-1: config 0 descriptor??
usb 3-1: selecting invalid altsetting 2
get_1284_register: usb error -71
usb 3-1: USB disconnect, device number 5