BUG: sleeping function called from invalid context at kernel/printk/printk.c:2565 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 3552, name: syz-executor128 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by syz-executor128/3552: #0: ffff88807edf8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffff88807edf8130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:944 [inline] #1: ffff88807edf8130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: do_tty_write drivers/tty/tty_io.c:967 [inline] #1: ffff88807edf8130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x1f5/0x890 drivers/tty/tty_io.c:1089 #2: ffff888019ad83e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5b/0x120 drivers/tty/n_gsm.c:3056 irq event stamp: 612 hardirqs last enabled at (611): [] exc_page_fault+0x4e0/0x790 arch/x86/mm/fault.c:1578 hardirqs last disabled at (612): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (612): [] _raw_spin_lock_irqsave+0xac/0x120 kernel/locking/spinlock.c:162 softirqs last enabled at (118): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (118): [] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 softirqs last disabled at (69): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (69): [] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 3552 Comm: syz-executor128 Not tainted 6.1.28-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 __might_resched+0x5cb/0x780 kernel/sched/core.c:9941 console_lock+0x16/0x70 kernel/printk/printk.c:2565 do_con_write+0x110/0x7260 drivers/tty/vt/vt.c:2908 con_write+0x20/0x40 drivers/tty/vt/vt.c:3295 gsmld_write+0xf9/0x120 drivers/tty/n_gsm.c:3059 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:2205 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fed5a2700e9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0ca00118 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fed5a2700e9 RDX: 0000000000000078 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 0000000000000000 R08: 000000000000000d R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fed5a233630 R13: 0000000000000000 R14: 00007ffd0ca00140 R15: 00007ffd0ca00130