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: 25 Comm: kworker/1:1 Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events p9_write_work
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 assign_lock_key+0x1e4/0x1f0 kernel/locking/lockdep.c:937
 register_lock_class+0x148/0x6a4 kernel/locking/lockdep.c:1250
 __lock_acquire+0x184/0x7638 kernel/locking/lockdep.c:4891
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xc4/0x14c kernel/locking/spinlock.c:162
 gsmld_write+0x60/0x164 drivers/tty/n_gsm.c:2929
 do_tty_write drivers/tty/tty_io.c:1038 [inline]
 file_tty_write+0x44c/0x758 drivers/tty/tty_io.c:1110
 tty_write+0x48/0x58 drivers/tty/tty_io.c:1131
 __kernel_write+0x488/0x8b0 fs/read_write.c:539
 kernel_write+0xe0/0x1ec fs/read_write.c:568
 p9_fd_write net/9p/trans_fd.c:436 [inline]
 p9_write_work+0x488/0xcfc net/9p/trans_fd.c:487
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
BUG: sleeping function called from invalid context at kernel/printk/printk.c:2555
in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 25, name: kworker/1:1
INFO: lockdep is turned off.
irq event stamp: 169198
hardirqs last  enabled at (169197): [<ffff800011a6b934>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (169197): [<ffff800011a6b934>] _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194
hardirqs last disabled at (169198): [<ffff800011a6b410>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (169198): [<ffff800011a6b410>] _raw_spin_lock_irqsave+0xfc/0x14c kernel/locking/spinlock.c:162
softirqs last  enabled at (168242): [<ffff80000a982f80>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (168238): [<ffff80000a982f4c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
Preemption disabled at:
[<ffff80000b40ee94>] gsmld_write+0x60/0x164 drivers/tty/n_gsm.c:2929
CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events p9_write_work
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 ___might_sleep+0x380/0x4dc kernel/sched/core.c:9626
 __might_sleep+0x98/0xf0 kernel/sched/core.c:9580
 console_lock+0x30/0x16c kernel/printk/printk.c:2555
 do_con_write+0x110/0x5934 drivers/tty/vt/vt.c:2908
 con_write+0x34/0x58 drivers/tty/vt/vt.c:3295
 gsmld_write+0x108/0x164 drivers/tty/n_gsm.c:2932
 do_tty_write drivers/tty/tty_io.c:1038 [inline]
 file_tty_write+0x44c/0x758 drivers/tty/tty_io.c:1110
 tty_write+0x48/0x58 drivers/tty/tty_io.c:1131
 __kernel_write+0x488/0x8b0 fs/read_write.c:539
 kernel_write+0xe0/0x1ec fs/read_write.c:568
 p9_fd_write net/9p/trans_fd.c:436 [inline]
 p9_write_work+0x488/0xcfc net/9p/trans_fd.c:487
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870