syzbot

BUG: sleeping function called from invalid context at kernel/printk/printk.c:2598
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 4995, name: syz-executor424
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by syz-executor424/4995:
 #0: ffff88801b710098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffff88801b710130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:944 [inline]
 #1: ffff88801b710130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: do_tty_write drivers/tty/tty_io.c:967 [inline]
 #1: ffff88801b710130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x1f5/0x890 drivers/tty/tty_io.c:1089
 #2: ffff888012acc3e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5f/0x120 drivers/tty/n_gsm.c:3669
irq event stamp: 4386
hardirqs last  enabled at (4385): [<ffffffff8ab8bb63>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last  enabled at (4385): [<ffffffff8ab8bb63>] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202
hardirqs last disabled at (4386): [<ffffffff8ab8b7e0>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (4386): [<ffffffff8ab8b7e0>] _raw_spin_lock_irqsave+0xb0/0x120 kernel/locking/spinlock.c:162
softirqs last  enabled at (2296): [<ffffffff81549279>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last  enabled at (2296): [<ffffffff81549279>] __irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
softirqs last disabled at (2291): [<ffffffff81549279>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (2291): [<ffffffff81549279>] __irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 4995 Comm: syz-executor424 Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 __might_resched+0x5cf/0x780 kernel/sched/core.c:10153
 console_lock+0x1a/0x70 kernel/printk/printk.c:2598
 do_con_write+0x114/0x7890 drivers/tty/vt/vt.c:2863
 con_write+0x24/0x40 drivers/tty/vt/vt.c:3246
 gsmld_write+0xfd/0x120 drivers/tty/n_gsm.c:3672
 do_tty_write drivers/tty/tty_io.c:1018 [inline]
 file_tty_write+0x504/0x890 drivers/tty/tty_io.c:1089
 call_write_iter include/linux/fs.h:1868 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7ec/0xc10 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f991c034289
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8a67dd08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001