./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1664421258 <...> Warning: Permanently added '10.128.0.100' (ED25519) to the list of known hosts. execve("./syz-executor1664421258", ["./syz-executor1664421258"], 0x7ffdfb02a0e0 /* 10 vars */) = 0 brk(NULL) = 0x555555f86000 brk(0x555555f86d00) = 0x555555f86d00 arch_prctl(ARCH_SET_FS, 0x555555f86380) = 0 set_tid_address(0x555555f86650) = 5067 set_robust_list(0x555555f86660, 24) = 0 rseq(0x555555f86ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1664421258", 4096) = 28 getrandom("\x1c\xb4\x97\x3e\x14\x35\xef\xc8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555f86d00 brk(0x555555fa7d00) = 0x555555fa7d00 brk(0x555555fa8000) = 0x555555fa8000 mprotect(0x7f012391c000, 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 [ 54.703720][ T5067] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 54.713236][ T5067] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5067, name: syz-executor166 [ 54.722692][ T5067] preempt_count: 1, expected: 0 [ 54.727542][ T5067] RCU nest depth: 0, expected: 0 [ 54.732480][ T5067] 3 locks held by syz-executor166/5067: [ 54.738025][ T5067] #0: ffff88807d72f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 54.747778][ T5067] #1: ffff88807d72f130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 54.759059][ T5067] #2: ffff88814b7973e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 54.768096][ T5067] irq event stamp: 4084 [ 54.772220][ T5067] hardirqs last enabled at (4083): [] _raw_spin_unlock_irq+0x23/0x50 [ 54.781915][ T5067] hardirqs last disabled at (4084): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 54.791781][ T5067] softirqs last enabled at (3550): [] __do_softirq+0x597/0x8de [ 54.800961][ T5067] softirqs last disabled at (3539): [] irq_exit_rcu+0xb7/0x120 [ 54.810075][ T5067] Preemption disabled at: [ 54.810080][ T5067] [<0000000000000000>] 0x0 [ 54.818767][ T5067] CPU: 0 PID: 5067 Comm: syz-executor166 Not tainted 6.7.0-rc2-syzkaller-00265-gd2da77f431ac #0 [ 54.829153][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 54.839187][ T5067] Call Trace: [ 54.842445][ T5067] [ 54.845352][ T5067] dump_stack_lvl+0xd9/0x1b0 [ 54.849958][ T5067] __might_resched+0x3c3/0x5e0 [ 54.854731][ T5067] ? preempt_count_sub+0x160/0x160 [ 54.859836][ T5067] ? add_lock_to_list+0x17d/0x380 [ 54.864865][ T5067] console_lock+0x34/0x150 [ 54.869272][ T5067] do_con_write+0x145/0x7f40 [ 54.873864][ T5067] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 54.879846][ T5067] ? preempt_count_sub+0x160/0x160 [ 54.884952][ T5067] ? reset_palette+0x2a0/0x2a0 [ 54.889710][ T5067] ? lock_acquire+0x1ae/0x520 [ 54.894384][ T5067] ? lock_sync+0x190/0x190 [ 54.898799][ T5067] ? do_raw_spin_lock+0x12e/0x2b0 [ 54.903817][ T5067] ? spin_bug+0x1d0/0x1d0 [ 54.908142][ T5067] con_write+0x23/0xb0 [ 54.912208][ T5067] gsmld_write+0xd0/0x150 [ 54.916528][ T5067] ? gsm_dlci_copy_config_values+0x300/0x300 [ 54.922501][ T5067] file_tty_write.constprop.0+0x519/0x9b0 [ 54.928219][ T5067] vfs_write+0x64f/0xdf0 [ 54.932455][ T5067] ? kernel_write+0x6c0/0x6c0 [ 54.937131][ T5067] ? __fget_light+0x1fc/0x260 [ 54.941804][ T5067] ksys_write+0x12f/0x250 [ 54.946125][ T5067] ? __ia32_sys_read+0xb0/0xb0 [ 54.950883][ T5067] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 54.957120][ T5067] do_syscall_64+0x40/0x110 [ 54.961619][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 54.967513][ T5067] RIP: 0033:0x7f01238a9569 [ 54.971921][ T5067] 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 [ 54.991518][ T5067] RSP: 002b:00007ffd245164f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 54.999925][ T5067] RAX: ffffffffffffffda RBX: 00007ffd24516