./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4097733293 <...> Warning: Permanently added '10.128.0.200' (ED25519) to the list of known hosts. execve("./syz-executor4097733293", ["./syz-executor4097733293"], 0x7ffc76086cb0 /* 10 vars */) = 0 brk(NULL) = 0x555555acf000 brk(0x555555acfd00) = 0x555555acfd00 arch_prctl(ARCH_SET_FS, 0x555555acf380) = 0 set_tid_address(0x555555acf650) = 5065 set_robust_list(0x555555acf660, 24) = 0 rseq(0x555555acfca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4097733293", 4096) = 28 getrandom("\x8f\x2b\xbe\x85\x5e\x82\x4f\x12", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555acfd00 brk(0x555555af0d00) = 0x555555af0d00 brk(0x555555af1000) = 0x555555af1000 mprotect(0x7f3c98abc000, 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 [ 55.862248][ T5065] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 55.871775][ T5065] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5065, name: syz-executor409 [ 55.881236][ T5065] preempt_count: 1, expected: 0 [ 55.886075][ T5065] RCU nest depth: 0, expected: 0 [ 55.890995][ T5065] 3 locks held by syz-executor409/5065: [ 55.896523][ T5065] #0: ffff888078c550a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 55.906286][ T5065] #1: ffff888078c55130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 55.917591][ T5065] #2: ffff8881476793e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 55.926637][ T5065] irq event stamp: 4186 [ 55.930773][ T5065] hardirqs last enabled at (4185): [] _raw_spin_unlock_irq+0x23/0x50 [ 55.940498][ T5065] hardirqs last disabled at (4186): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 55.950378][ T5065] softirqs last enabled at (4172): [] __do_softirq+0x597/0x8de [ 55.959563][ T5065] softirqs last disabled at (4167): [] irq_exit_rcu+0xb7/0x120 [ 55.968659][ T5065] Preemption disabled at: [ 55.968665][ T5065] [<0000000000000000>] 0x0 [ 55.977366][ T5065] CPU: 1 PID: 5065 Comm: syz-executor409 Not tainted 6.7.0-rc1-syzkaller-00139-g6bc40e44f1dd #0 [ 55.987759][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 55.997802][ T5065] Call Trace: [ 56.001074][ T5065] [ 56.003997][ T5065] dump_stack_lvl+0xd9/0x1b0 [ 56.008580][ T5065] __might_resched+0x3c3/0x5e0 [ 56.013336][ T5065] ? preempt_count_sub+0x160/0x160 [ 56.018435][ T5065] ? add_lock_to_list+0x17d/0x380 [ 56.023460][ T5065] console_lock+0x34/0x150 [ 56.027878][ T5065] do_con_write+0x145/0x7f40 [ 56.032464][ T5065] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 56.038440][ T5065] ? preempt_count_sub+0x160/0x160 [ 56.043540][ T5065] ? reset_palette+0x2a0/0x2a0 [ 56.048297][ T5065] ? lock_acquire+0x1ae/0x520 [ 56.052972][ T5065] ? lock_sync+0x190/0x190 [ 56.057390][ T5065] ? do_raw_spin_lock+0x12e/0x2b0 [ 56.062403][ T5065] ? spin_bug+0x1d0/0x1d0 [ 56.066727][ T5065] con_write+0x23/0xb0 [ 56.070787][ T5065] gsmld_write+0xd0/0x150 [ 56.075103][ T5065] ? gsm_dlci_copy_config_values+0x300/0x300 [ 56.081077][ T5065] file_tty_write.constprop.0+0x519/0x9b0 [ 56.086793][ T5065] vfs_write+0x64f/0xdf0 [ 56.091028][ T5065] ? kernel_write+0x6c0/0x6c0 [ 56.095704][ T5065] ? __fget_light+0x1fc/0x260 [ 56.100369][ T5065] ksys_write+0x12f/0x250 [ 56.104688][ T5065] ? __ia32_sys_read+0xb0/0xb0 [ 56.109441][ T5065] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 56.115677][ T5065] do_syscall_64+0x40/0x110 [ 56.120173][ T5065] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 56.126066][ T5065] RIP: 0033:0x7f3c98a49569 [ 56.130467][ T5065] 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 [ 56.150071][ T5065] RSP: 002b:00007fff1ca6d7a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 56.158469][ T5065] RAX: ffffffffffffffda RBX: 00007fff1ca