./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1260834924 <...> Warning: Permanently added '10.128.0.189' (ED25519) to the list of known hosts. execve("./syz-executor1260834924", ["./syz-executor1260834924"], 0x7ffe003a6920 /* 10 vars */) = 0 brk(NULL) = 0x555556d8a000 brk(0x555556d8ad00) = 0x555556d8ad00 arch_prctl(ARCH_SET_FS, 0x555556d8a380) = 0 set_tid_address(0x555556d8a650) = 5065 set_robust_list(0x555556d8a660, 24) = 0 rseq(0x555556d8aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1260834924", 4096) = 28 getrandom("\x97\xc0\x38\xdc\x51\xfe\x77\xce", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d8ad00 brk(0x555556dabd00) = 0x555556dabd00 brk(0x555556dac000) = 0x555556dac000 mprotect(0x7fa7827be000, 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 [ 55.593912][ T5065] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 55.603421][ T5065] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5065, name: syz-executor126 [ 55.612896][ T5065] preempt_count: 1, expected: 0 [ 55.617749][ T5065] RCU nest depth: 0, expected: 0 [ 55.622688][ T5065] 3 locks held by syz-executor126/5065: [ 55.628209][ T5065] #0: ffff88807f8490a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 55.638558][ T5065] #1: ffff88807f849130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 55.649843][ T5065] #2: ffff88814b1133e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 55.658864][ T5065] irq event stamp: 4164 [ 55.662991][ T5065] hardirqs last enabled at (4163): [] _raw_spin_unlock_irq+0x23/0x50 [ 55.672685][ T5065] hardirqs last disabled at (4164): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 55.682555][ T5065] softirqs last enabled at (3706): [] __do_softirq+0x597/0x8de [ 55.691728][ T5065] softirqs last disabled at (3691): [] irq_exit_rcu+0xb7/0x120 [ 55.700819][ T5065] Preemption disabled at: [ 55.700825][ T5065] [<0000000000000000>] 0x0 [ 55.709533][ T5065] CPU: 1 PID: 5065 Comm: syz-executor126 Not tainted 6.7.0-rc2-syzkaller-00095-gd3fa86b1a7b4 #0 [ 55.719925][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 55.729978][ T5065] Call Trace: [ 55.733241][ T5065] [ 55.736164][ T5065] dump_stack_lvl+0xd9/0x1b0 [ 55.740740][ T5065] __might_resched+0x3c3/0x5e0 [ 55.745483][ T5065] ? preempt_count_sub+0x160/0x160 [ 55.750691][ T5065] ? add_lock_to_list+0x17d/0x380 [ 55.755724][ T5065] console_lock+0x34/0x150 [ 55.760128][ T5065] do_con_write+0x145/0x7f40 [ 55.764709][ T5065] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 55.770694][ T5065] ? preempt_count_sub+0x160/0x160 [ 55.775790][ T5065] ? reset_palette+0x2a0/0x2a0 [ 55.780538][ T5065] ? lock_acquire+0x1ae/0x520 [ 55.785200][ T5065] ? lock_sync+0x190/0x190 [ 55.789694][ T5065] ? do_raw_spin_lock+0x12e/0x2b0 [ 55.794697][ T5065] ? spin_bug+0x1d0/0x1d0 [ 55.799014][ T5065] con_write+0x23/0xb0 [ 55.803066][ T5065] gsmld_write+0xd0/0x150 [ 55.807377][ T5065] ? gsm_dlci_copy_config_values+0x300/0x300 [ 55.813337][ T5065] file_tty_write.constprop.0+0x519/0x9b0 [ 55.819041][ T5065] vfs_write+0x64f/0xdf0 [ 55.823264][ T5065] ? kernel_write+0x6c0/0x6c0 [ 55.827927][ T5065] ? __fget_light+0x1fc/0x260 [ 55.832589][ T5065] ksys_write+0x12f/0x250 [ 55.836898][ T5065] ? __ia32_sys_read+0xb0/0xb0 [ 55.841641][ T5065] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 55.847864][ T5065] do_syscall_64+0x40/0x110 [ 55.852353][ T5065] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 55.858235][ T5065] RIP: 0033:0x7fa78274b569 [ 55.862627][ 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 [ 55.882213][ T5065] RSP: 002b:00007fff5d9234e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 55.890617][ T5065] RAX: ffffffffffffffda RBX: 00007