BUG: sleeping function called from invalid context at kernel/printk/printk.c:2549 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 13723, name: syz-executor.4 3 locks held by syz-executor.4/13723: #0: ffff88807940b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffff88807940b130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:961 [inline] #1: ffff88807940b130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: do_tty_write drivers/tty/tty_io.c:984 [inline] #1: ffff88807940b130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x24f/0x920 drivers/tty/tty_io.c:1110 #2: ffff88805ed60398 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5b/0x120 drivers/tty/n_gsm.c:2926 irq event stamp: 254 hardirqs last enabled at (253): [] syscall_enter_from_user_mode+0x2e/0x230 kernel/entry/common.c:107 hardirqs last disabled at (254): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (254): [] _raw_spin_lock_irqsave+0xac/0x120 kernel/locking/spinlock.c:162 softirqs last enabled at (68): [] do_ipv6_setsockopt net/ipv6/ipv6_sockglue.c:982 [inline] softirqs last enabled at (68): [] ipv6_setsockopt+0x2f1f/0x43a0 net/ipv6/ipv6_sockglue.c:1006 softirqs last disabled at (66): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (66): [] release_sock+0x2c/0x1c0 net/core/sock.c:3263 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 13723 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 ___might_sleep+0x547/0x6a0 kernel/sched/core.c:9626 console_lock+0x18/0x70 kernel/printk/printk.c:2549 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:2929 do_tty_write drivers/tty/tty_io.c:1038 [inline] file_tty_write+0x561/0x920 drivers/tty/tty_io.c:1110 call_write_iter include/linux/fs.h:2148 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xacf/0xe50 fs/read_write.c:594 ksys_write+0x1a2/0x2c0 fs/read_write.c:647 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+0x61/0xcb RIP: 0033:0x7f3df73c9da9 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:00007f3df594a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3df74f7f80 RCX: 00007f3df73c9da9 RDX: 0000000000000018 RSI: 0000000020000100 RDI: 0000000000000007 RBP: 00007f3df741647a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f3df74f7f80 R15: 00007ffcb593a758