./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3895927207 <...> Warning: Permanently added '10.128.0.6' (ED25519) to the list of known hosts. execve("./syz-executor3895927207", ["./syz-executor3895927207"], 0x7fff2a9318e0 /* 10 vars */) = 0 brk(NULL) = 0x555556c67000 brk(0x555556c67d00) = 0x555556c67d00 arch_prctl(ARCH_SET_FS, 0x555556c67380) = 0 set_tid_address(0x555556c67650) = 5070 set_robust_list(0x555556c67660, 24) = 0 rseq(0x555556c67ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3895927207", 4096) = 28 getrandom("\x59\xc7\x7b\x96\x38\xb6\x2a\x63", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556c67d00 brk(0x555556c88d00) = 0x555556c88d00 brk(0x555556c89000) = 0x555556c89000 mprotect(0x7f44930f0000, 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/4:20", O_RDWR) = 3 ioctl(3, TIOCSETD, [21]) = 0 [ 54.881842][ T5070] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 54.891733][ T5070] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5070, name: syz-executor389 [ 54.901210][ T5070] preempt_count: 1, expected: 0 [ 54.906048][ T5070] RCU nest depth: 0, expected: 0 [ 54.911008][ T5070] 3 locks held by syz-executor389/5070: [ 54.916558][ T5070] #0: ffff88805742b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 54.926373][ T5070] #1: ffff88805742b130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 54.937689][ T5070] #2: ffff88807a3eb3e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 54.946836][ T5070] irq event stamp: 4460 [ 54.951077][ T5070] hardirqs last enabled at (4459): [] _raw_spin_unlock_irq+0x23/0x50 [ 54.960824][ T5070] hardirqs last disabled at (4460): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 54.970712][ T5070] softirqs last enabled at (4410): [] __do_softirq+0x597/0x8de [ 54.980003][ T5070] softirqs last disabled at (4399): [] irq_exit_rcu+0xb7/0x120 [ 54.989467][ T5070] Preemption disabled at: [ 54.989474][ T5070] [<0000000000000000>] 0x0 [ 54.998203][ T5070] CPU: 1 PID: 5070 Comm: syz-executor389 Not tainted 6.7.0-rc2-syzkaller #0 [ 55.006873][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 55.016932][ T5070] Call Trace: [ 55.020247][ T5070] [ 55.023216][ T5070] dump_stack_lvl+0xd9/0x1b0 [ 55.028544][ T5070] __might_resched+0x3c3/0x5e0 [ 55.033395][ T5070] ? preempt_count_sub+0x160/0x160 [ 55.038536][ T5070] ? add_lock_to_list+0x17d/0x380 [ 55.043593][ T5070] console_lock+0x34/0x150 [ 55.048012][ T5070] do_con_write+0x145/0x7f40 [ 55.052642][ T5070] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 55.058657][ T5070] ? preempt_count_sub+0x160/0x160 [ 55.063781][ T5070] ? reset_palette+0x2a0/0x2a0 [ 55.068548][ T5070] ? lock_acquire+0x1ae/0x520 [ 55.073465][ T5070] ? lock_sync+0x190/0x190 [ 55.078015][ T5070] ? do_raw_spin_lock+0x12e/0x2b0 [ 55.083069][ T5070] ? spin_bug+0x1d0/0x1d0 [ 55.087448][ T5070] con_write+0x23/0xb0 [ 55.091536][ T5070] gsmld_write+0xd0/0x150 [ 55.095866][ T5070] ? gsm_dlci_copy_config_values+0x300/0x300 [ 55.101853][ T5070] file_tty_write.constprop.0+0x519/0x9b0 [ 55.108028][ T5070] vfs_write+0x64f/0xdf0 [ 55.112275][ T5070] ? kernel_write+0x6c0/0x6c0 [ 55.117100][ T5070] ? __fget_light+0x1fc/0x260 [ 55.121898][ T5070] ksys_write+0x12f/0x250 [ 55.126262][ T5070] ? __ia32_sys_read+0xb0/0xb0 [ 55.131037][ T5070] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 55.137302][ T5070] do_syscall_64+0x40/0x110 [ 55.142209][ T5070] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 55.148322][ T5070] RIP: 0033:0x7f449307d569 [ 55.152866][ T5070] 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 [ 55.172589][ T5070] RSP: 002b:00007ffcb969db78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 55.181016][ T5070] RAX: f