./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3953462081 <...> Warning: Permanently added '10.128.0.50' (ED25519) to the list of known hosts. execve("./syz-executor3953462081", ["./syz-executor3953462081"], 0x7fffcae04d70 /* 10 vars */) = 0 brk(NULL) = 0x555556d5f000 brk(0x555556d5fd00) = 0x555556d5fd00 arch_prctl(ARCH_SET_FS, 0x555556d5f380) = 0 set_tid_address(0x555556d5f650) = 5071 set_robust_list(0x555556d5f660, 24) = 0 rseq(0x555556d5fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3953462081", 4096) = 28 getrandom("\x42\x1f\x1f\x12\x68\x26\x9a\x5a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d5fd00 brk(0x555556d80d00) = 0x555556d80d00 brk(0x555556d81000) = 0x555556d81000 mprotect(0x7f2a84c24000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/char/4:21", O_RDWR) = 3 ioctl(3, TIOCSETD, [21]) = 0 openat(AT_FDCWD, "/dev/char/4:21", O_RDWR) = 4 [ 59.541561][ T5071] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 59.551122][ T5071] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5071, name: syz-executor395 [ 59.560572][ T5071] preempt_count: 1, expected: 0 [ 59.565412][ T5071] RCU nest depth: 0, expected: 0 [ 59.570336][ T5071] 3 locks held by syz-executor395/5071: [ 59.575863][ T5071] #0: ffff88807e5980a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 59.585625][ T5071] #1: ffff88807e598130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 59.596928][ T5071] #2: ffff888016acd3e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 59.605974][ T5071] irq event stamp: 4312 [ 59.610150][ T5071] hardirqs last enabled at (4311): [] _raw_spin_unlock_irq+0x23/0x50 [ 59.619980][ T5071] hardirqs last disabled at (4312): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 59.630006][ T5071] softirqs last enabled at (4220): [] __do_softirq+0x597/0x8de [ 59.639259][ T5071] softirqs last disabled at (4215): [] irq_exit_rcu+0xb7/0x120 [ 59.648427][ T5071] Preemption disabled at: [ 59.648440][ T5071] [<0000000000000000>] 0x0 [ 59.657245][ T5071] CPU: 0 PID: 5071 Comm: syz-executor395 Not tainted 6.7.0-rc1-syzkaller-00139-g6bc40e44f1dd #0 [ 59.667713][ T5071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 59.677784][ T5071] Call Trace: [ 59.681063][ T5071] [ 59.684024][ T5071] dump_stack_lvl+0xd9/0x1b0 [ 59.688637][ T5071] __might_resched+0x3c3/0x5e0 [ 59.693386][ T5071] ? preempt_count_sub+0x160/0x160 [ 59.698478][ T5071] ? add_lock_to_list+0x17d/0x380 [ 59.703492][ T5071] console_lock+0x34/0x150 [ 59.707889][ T5071] do_con_write+0x145/0x7f40 [ 59.712472][ T5071] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 59.718446][ T5071] ? preempt_count_sub+0x160/0x160 [ 59.723554][ T5071] ? reset_palette+0x2a0/0x2a0 [ 59.728339][ T5071] ? lock_acquire+0x1ae/0x520 [ 59.733122][ T5071] ? lock_sync+0x190/0x190 [ 59.737581][ T5071] ? do_raw_spin_lock+0x12e/0x2b0 [ 59.742591][ T5071] ? spin_bug+0x1d0/0x1d0 [ 59.746909][ T5071] con_write+0x23/0xb0 [ 59.750968][ T5071] gsmld_write+0xd0/0x150 [ 59.755277][ T5071] ? gsm_dlci_copy_config_values+0x300/0x300 [ 59.761246][ T5071] file_tty_write.constprop.0+0x519/0x9b0 [ 59.766956][ T5071] vfs_write+0x64f/0xdf0 [ 59.771190][ T5071] ? kernel_write+0x6c0/0x6c0 [ 59.775860][ T5071] ? __fget_light+0x1fc/0x260 [ 59.780522][ T5071] ksys_write+0x12f/0x250 [ 59.784836][ T5071] ? __ia32_sys_read+0xb0/0xb0 [ 59.789584][ T5071] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 59.795818][ T5071] do_syscall_64+0x40/0x110 [ 59.800310][ T5071] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 59.806192][ T5071] RIP: 0033:0x7f2a84bb1569 [ 59.810605][ T5071] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 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 [ 59.830271][ T5071] RSP: 002b:00007ffe20f8f828 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(4, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 59.838725][ T5071] RAX: ffffffffffffffda RBX: 00