BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5070, name: syz-executor299 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by syz-executor299/5070: #0: ffff888023d750a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffff888023d75130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:954 [inline] #1: ffff888023d75130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: iterate_tty_write drivers/tty/tty_io.c:973 [inline] #1: ffff888023d75130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 drivers/tty/tty_io.c:1096 #2: ffff8880262493e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 drivers/tty/n_gsm.c:3721 irq event stamp: 1904 hardirqs last enabled at (1903): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (1903): [] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 hardirqs last disabled at (1904): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1904): [] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162 softirqs last enabled at (1858): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (1858): [] __do_softirq+0x596/0x8de kernel/softirq.c:582 softirqs last disabled at (1849): [] invoke_softirq kernel/softirq.c:427 [inline] softirqs last disabled at (1849): [] __irq_exit_rcu kernel/softirq.c:632 [inline] softirqs last disabled at (1849): [] irq_exit_rcu+0xb9/0x120 kernel/softirq.c:644 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 5070 Comm: syz-executor299 Not tainted 6.7.0-next-20240119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:10176 console_lock+0x34/0x150 kernel/printk/printk.c:2634 do_con_write+0x149/0x7f50 drivers/tty/vt/vt.c:2862 con_write+0x23/0xc0 drivers/tty/vt/vt.c:3251 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:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6db/0x1100 fs/read_write.c:590 ksys_write+0x12f/0x260 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fa57f79dcb9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffea9381908 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa57f79dcb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fa57f8115f0 R08: 0000000000000006 R09: 0000000000000006 R10: 00007ffea9381616 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001