BUG: sleeping function called from invalid context at kernel/printk/printk.c:2674 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 12956, name: syz-executor.2 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by syz-executor.2/12956: #0: ffff888068e910a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffff888068e91130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:954 [inline] #1: ffff888068e91130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: iterate_tty_write drivers/tty/tty_io.c:973 [inline] #1: ffff888068e91130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x1f3/0x9b0 drivers/tty/tty_io.c:1096 #2: ffff88807d8583e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5f/0x130 drivers/tty/n_gsm.c:3721 irq event stamp: 1506 hardirqs last enabled at (1505): [] syscall_enter_from_user_mode include/linux/entry-common.h:197 [inline] hardirqs last enabled at (1505): [] do_syscall_64+0xb6/0x240 arch/x86/entry/common.c:79 hardirqs last disabled at (1506): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1506): [] _raw_spin_lock_irqsave+0xb0/0x120 kernel/locking/spinlock.c:162 softirqs last enabled at (452): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (452): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (452): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (321): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (321): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (321): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 12956 Comm: syz-executor.2 Not tainted 6.9.0-rc6-next-20240503-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 __might_resched+0x5d4/0x780 kernel/sched/core.c:10196 console_lock+0x20/0x1b0 kernel/printk/printk.c:2674 do_con_write+0x154/0x4c30 drivers/tty/vt/vt.c:3056 con_write+0x26/0x40 drivers/tty/vt/vt.c:3434 gsmld_write+0xfe/0x130 drivers/tty/n_gsm.c:3724 iterate_tty_write drivers/tty/tty_io.c:1021 [inline] file_tty_write+0x54f/0x9b0 drivers/tty/tty_io.c:1096 do_iter_readv_writev+0x5a4/0x800 vfs_writev+0x395/0xbe0 fs/read_write.c:971 do_writev+0x1b1/0x350 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd2e767dca9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd2e837a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007fd2e77abf80 RCX: 00007fd2e767dca9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007fd2e76c947e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd2e77abf80 R15: 00007ffec3f948a8