BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5966, name: syz-executor.3
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by syz-executor.3/5966:
 #0: ffff88802bb0f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffff88802bb0f130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:954 [inline]
 #1: ffff88802bb0f130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: iterate_tty_write drivers/tty/tty_io.c:973 [inline]
 #1: ffff88802bb0f130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 drivers/tty/tty_io.c:1096
 #2: ffff8880288463e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 drivers/tty/n_gsm.c:3721
irq event stamp: 2860
hardirqs last  enabled at (2859): [<ffffffff8adf7032>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (2859): [<ffffffff8adf7032>] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194
hardirqs last disabled at (2860): [<ffffffff8adf6d42>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (2860): [<ffffffff8adf6d42>] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162
softirqs last  enabled at (2744): [<ffffffff8152ee1e>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last  enabled at (2744): [<ffffffff8152ee1e>] handle_softirqs+0x5be/0x8f0 kernel/softirq.c:582
softirqs last disabled at (2709): [<ffffffff8152f86b>] __do_softirq kernel/softirq.c:588 [inline]
softirqs last disabled at (2709): [<ffffffff8152f86b>] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last disabled at (2709): [<ffffffff8152f86b>] __irq_exit_rcu kernel/softirq.c:637 [inline]
softirqs last disabled at (2709): [<ffffffff8152f86b>] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 2 PID: 5966 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-09699-geb6a9339efeb #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:10196
 console_lock+0x1b/0xa0 kernel/printk/printk.c:2659
 do_con_write+0x154/0x7d00 drivers/tty/vt/vt.c:3056
 con_write+0x23/0xb0 drivers/tty/vt/vt.c:3434
 gsmld_write+0xd2/0x150 drivers/tty/n_gsm.c:3724
 iterate_tty_write drivers/tty/tty_io.c:1021 [inline]
 file_tty_write.constprop.0+0x518/0x9b0 drivers/tty/tty_io.c:1096
 call_write_iter include/linux/fs.h:2120 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x6b6/0x1120 fs/read_write.c:590
 ksys_write+0x12f/0x260 fs/read_write.c:643
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72ff579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5ef15ac EFLAGS: 00000292 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 0000000020000bc0
RDX: 00000000000004b0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi