./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2561656667 <...> Warning: Permanently added '10.128.0.92' (ED25519) to the list of known hosts. execve("./syz-executor2561656667", ["./syz-executor2561656667"], 0x7fffd8958600 /* 10 vars */) = 0 brk(NULL) = 0x5555556af000 brk(0x5555556afd00) = 0x5555556afd00 arch_prctl(ARCH_SET_FS, 0x5555556af380) = 0 set_tid_address(0x5555556af650) = 5066 set_robust_list(0x5555556af660, 24) = 0 rseq(0x5555556afca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2561656667", 4096) = 28 getrandom("\x32\xa8\xd1\x3b\x2d\xaf\x8c\xd1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555556afd00 brk(0x5555556d0d00) = 0x5555556d0d00 brk(0x5555556d1000) = 0x5555556d1000 mprotect(0x7fdd5a18c000, 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/4:1", O_RDWR) = 3 ioctl(3, TIOCSETD, [21]) = 0 openat(AT_FDCWD, "/dev/char/4:1", O_RDWR) = 4 [ 54.210155][ T5066] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 54.219737][ T5066] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5066, name: syz-executor256 [ 54.229187][ T5066] preempt_count: 1, expected: 0 [ 54.234023][ T5066] RCU nest depth: 0, expected: 0 [ 54.238937][ T5066] 3 locks held by syz-executor256/5066: [ 54.244465][ T5066] #0: ffff88806d9d90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 54.254237][ T5066] #1: ffff88806d9d9130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 54.265546][ T5066] #2: ffff8881417563e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 54.274594][ T5066] irq event stamp: 3674 [ 54.278753][ T5066] hardirqs last enabled at (3673): [] _raw_spin_unlock_irq+0x23/0x50 [ 54.288471][ T5066] hardirqs last disabled at (3674): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 54.298367][ T5066] softirqs last enabled at (3582): [] __do_softirq+0x597/0x8de [ 54.307564][ T5066] softirqs last disabled at (3565): [] irq_exit_rcu+0xb7/0x120 [ 54.316675][ T5066] Preemption disabled at: [ 54.316682][ T5066] [<0000000000000000>] 0x0 [ 54.325405][ T5066] CPU: 0 PID: 5066 Comm: syz-executor256 Not tainted 6.7.0-rc1-syzkaller-00012-g9bacdd8996c7 #0 [ 54.335810][ T5066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 54.345861][ T5066] Call Trace: [ 54.349139][ T5066] [ 54.352063][ T5066] dump_stack_lvl+0xd9/0x1b0 [ 54.356655][ T5066] __might_resched+0x3c3/0x5e0 [ 54.361418][ T5066] ? preempt_count_sub+0x160/0x160 [ 54.366528][ T5066] ? add_lock_to_list+0x17d/0x380 [ 54.371561][ T5066] console_lock+0x34/0x150 [ 54.375973][ T5066] do_con_write+0x145/0x7f40 [ 54.380564][ T5066] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 54.386548][ T5066] ? preempt_count_sub+0x160/0x160 [ 54.391655][ T5066] ? reset_palette+0x2a0/0x2a0 [ 54.396410][ T5066] ? lock_acquire+0x1ae/0x520 [ 54.401090][ T5066] ? lock_sync+0x190/0x190 [ 54.405507][ T5066] ? do_raw_spin_lock+0x12e/0x2b0 [ 54.410537][ T5066] ? spin_bug+0x1d0/0x1d0 [ 54.414862][ T5066] con_write+0x23/0xb0 [ 54.418928][ T5066] gsmld_write+0xd0/0x150 [ 54.423248][ T5066] ? gsm_dlci_copy_config_values+0x300/0x300 [ 54.429244][ T5066] file_tty_write.constprop.0+0x519/0x9b0 [ 54.434962][ T5066] vfs_write+0x64f/0xdf0 [ 54.439205][ T5066] ? kernel_write+0x6c0/0x6c0 [ 54.443882][ T5066] ? __fget_light+0x1fc/0x260 [ 54.448557][ T5066] ksys_write+0x12f/0x250 [ 54.452877][ T5066] ? __ia32_sys_read+0xb0/0xb0 [ 54.457633][ T5066] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 54.463876][ T5066] do_syscall_64+0x40/0x110 [ 54.468380][ T5066] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 54.474272][ T5066] RIP: 0033:0x7fdd5a119569 [ 54.478676][ T5066] 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 [ 54.498287][ T5066] RSP: 002b:00007ffde73cc0b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(4, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 54.506706][ T5066] RAX: ffffffffffffffda RBX: 00007ffd