./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2642664556 <...> Warning: Permanently added '10.128.0.136' (ED25519) to the list of known hosts. execve("./syz-executor2642664556", ["./syz-executor2642664556"], 0x7ffdb866c1c0 /* 10 vars */) = 0 brk(NULL) = 0x55555618b000 brk(0x55555618bd00) = 0x55555618bd00 arch_prctl(ARCH_SET_FS, 0x55555618b380) = 0 set_tid_address(0x55555618b650) = 5069 set_robust_list(0x55555618b660, 24) = 0 rseq(0x55555618bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2642664556", 4096) = 28 getrandom("\x01\x16\xcd\x9b\x36\xe2\xce\xa1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555618bd00 brk(0x5555561acd00) = 0x5555561acd00 brk(0x5555561ad000) = 0x5555561ad000 mprotect(0x7efd86f5a000, 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 [ 54.265824][ T5069] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 54.275377][ T5069] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5069, name: syz-executor264 [ 54.284812][ T5069] preempt_count: 1, expected: 0 [ 54.289637][ T5069] RCU nest depth: 0, expected: 0 [ 54.294550][ T5069] 3 locks held by syz-executor264/5069: [ 54.300076][ T5069] #0: ffff88801ca890a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 54.309840][ T5069] #1: ffff88801ca89130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x293/0x9b0 [ 54.321134][ T5069] #2: ffff88807d5dc3e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x62/0x150 [ 54.330181][ T5069] irq event stamp: 4206 [ 54.334317][ T5069] hardirqs last enabled at (4205): [] _raw_spin_unlock_irq+0x23/0x50 [ 54.344035][ T5069] hardirqs last disabled at (4206): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 54.354011][ T5069] softirqs last enabled at (3926): [] irq_exit_rcu+0xb7/0x120 [ 54.363115][ T5069] softirqs last disabled at (3915): [] irq_exit_rcu+0xb7/0x120 [ 54.372219][ T5069] Preemption disabled at: [ 54.372226][ T5069] [<0000000000000000>] 0x0 [ 54.380945][ T5069] CPU: 1 PID: 5069 Comm: syz-executor264 Not tainted 6.6.0-syzkaller-16201-gb57b17e88bf5 #0 [ 54.390999][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 54.401042][ T5069] Call Trace: [ 54.404310][ T5069] [ 54.407229][ T5069] dump_stack_lvl+0xd9/0x1b0 [ 54.411819][ T5069] __might_resched+0x3c3/0x5e0 [ 54.416571][ T5069] ? add_lock_to_list+0x17d/0x380 [ 54.421613][ T5069] ? preempt_count_sub+0x150/0x150 [ 54.426716][ T5069] ? lockdep_unlock+0x11b/0x290 [ 54.431564][ T5069] console_lock+0x34/0x150 [ 54.435979][ T5069] do_con_write+0x145/0x7f40 [ 54.440566][ T5069] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 54.446543][ T5069] ? __might_fault+0x13f/0x1a0 [ 54.451304][ T5069] ? preempt_count_sub+0x150/0x150 [ 54.456408][ T5069] ? reset_palette+0x2a0/0x2a0 [ 54.461160][ T5069] ? lock_acquire+0x1ae/0x510 [ 54.465849][ T5069] ? lock_sync+0x190/0x190 [ 54.470258][ T5069] ? do_raw_spin_lock+0x12e/0x2b0 [ 54.475277][ T5069] ? spin_bug+0x1d0/0x1d0 [ 54.479601][ T5069] ? file_tty_write.constprop.0+0x293/0x9b0 [ 54.485487][ T5069] con_write+0x23/0xb0 [ 54.489553][ T5069] gsmld_write+0xd0/0x150 [ 54.493872][ T5069] ? gsm_dlci_copy_config_values+0x300/0x300 [ 54.499843][ T5069] file_tty_write.constprop.0+0x519/0x9b0 [ 54.505572][ T5069] vfs_write+0x64f/0xdf0 [ 54.509811][ T5069] ? kernel_write+0x6c0/0x6c0 [ 54.514481][ T5069] ? find_held_lock+0x2d/0x110 [ 54.519242][ T5069] ? reacquire_held_locks+0x4b0/0x4b0 [ 54.524606][ T5069] ? __fget_light+0x1fc/0x260 [ 54.529279][ T5069] ksys_write+0x12f/0x250 [ 54.533600][ T5069] ? __ia32_sys_read+0xb0/0xb0 [ 54.538354][ T5069] ? lockdep_hardirqs_on+0x7d/0x100 [ 54.543538][ T5069] ? _raw_spin_unlock_irq+0x2e/0x50 [ 54.548726][ T5069] ? ptrace_notify+0xf4/0x130 [ 54.553395][ T5069] do_syscall_64+0x3f/0x110 [ 54.557912][ T5069] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 54.563796][ T5069] RIP: 0033:0x7efd86ee7569 [ 54.568196][ T5069] 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 [ 54.589178][ T5069] RSP: 002b:00007ffeccc449c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 54.597581][ T5069] RAX: ffffffffffffffda RBX: 00007ffeccc44b98 RCX: 00007efd86ee7569 [ 54.605548][ T5069] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 54.613529][ T5069] RBP: 00007efd86f5a610 R