BUG: sleeping function called from invalid context at kernel/printk/printk.c:2623 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 17434, name: syz-executor.2 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by syz-executor.2/17434: #0: ffff88805bc0d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffff88805bc0d130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:944 [inline] #1: ffff88805bc0d130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: do_tty_write drivers/tty/tty_io.c:967 [inline] #1: ffff88805bc0d130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x1f5/0x890 drivers/tty/tty_io.c:1089 #2: ffff888017fb13e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5b/0x120 drivers/tty/n_gsm.c:3060 irq event stamp: 632 hardirqs last enabled at (631): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (631): [] _raw_spin_unlock_irqrestore+0x8b/0x130 kernel/locking/spinlock.c:194 hardirqs last disabled at (632): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (632): [] _raw_spin_lock_irqsave+0xac/0x120 kernel/locking/spinlock.c:162 softirqs last enabled at (0): [] rcu_lock_acquire include/linux/rcupdate.h:350 [inline] softirqs last enabled at (0): [] rcu_read_lock include/linux/rcupdate.h:791 [inline] softirqs last enabled at (0): [] copy_process+0x9e1/0x4060 kernel/fork.c:2132 softirqs last disabled at (0): [<0000000000000000>] 0x0 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 17434 Comm: syz-executor.2 Not tainted 6.1.89-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+0x1e3/0x2cb lib/dump_stack.c:106 __might_resched+0x5cb/0x780 kernel/sched/core.c:9942 console_lock+0x1c/0x1c0 kernel/printk/printk.c:2623 do_con_write+0x110/0x7270 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:3063 do_tty_write drivers/tty/tty_io.c:1018 [inline] file_tty_write+0x504/0x890 drivers/tty/tty_io.c:1089 do_iter_write+0x6e6/0xc50 fs/read_write.c:861 iter_file_splice_write+0x830/0xfc0 fs/splice.c:685 do_splice_from fs/splice.c:763 [inline] direct_splice_actor+0xe3/0x1c0 fs/splice.c:950 splice_direct_to_actor+0x4c7/0xc30 fs/splice.c:896 do_splice_direct+0x2a5/0x3e0 fs/splice.c:1002 do_sendfile+0x61c/0xff0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64+0xfc/0x1e0 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fe77f07dea9 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:00007fe77fded0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fe77f1ac050 RCX: 00007fe77f07dea9 RDX: 0000000020000100 RSI: 0000000000000005 RDI: 0000000000000003 RBP: 00007fe77f0ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000220 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fe77f1ac050 R15: 00007ffff76e9c88