./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2551623076 <...> Warning: Permanently added '10.128.1.83' (ED25519) to the list of known hosts. execve("./syz-executor2551623076", ["./syz-executor2551623076"], 0x7ffeaa895850 /* 10 vars */) = 0 brk(NULL) = 0x5555786c9000 brk(0x5555786c9d00) = 0x5555786c9d00 arch_prctl(ARCH_SET_FS, 0x5555786c9380) = 0 set_tid_address(0x5555786c9650) = 5071 set_robust_list(0x5555786c9660, 24) = 0 rseq(0x5555786c9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2551623076", 4096) = 28 getrandom("\x2a\x39\x4e\x88\xe2\x89\x3f\x74", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555786c9d00 brk(0x5555786ead00) = 0x5555786ead00 brk(0x5555786eb000) = 0x5555786eb000 mprotect(0x7f3939dcd000, 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 openat(AT_FDCWD, "/dev/char/4:21", O_RDWR) = 4 [ 75.601228][ T5071] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2653 [ 75.610831][ T5071] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5071, name: syz-executor255 [ 75.620328][ T5071] preempt_count: 1, expected: 0 [ 75.625192][ T5071] RCU nest depth: 0, expected: 0 [ 75.630131][ T5071] 3 locks held by syz-executor255/5071: [ 75.635677][ T5071] #0: ffff88802d1cc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 75.645505][ T5071] #1: ffff88802d1cc130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x1f3/0x9b0 [ 75.655826][ T5071] #2: ffff888043e913e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5f/0x130 [ 75.664940][ T5071] irq event stamp: 5088 [ 75.669101][ T5071] hardirqs last enabled at (5087): [] _raw_spin_unlock_irq+0x23/0x50 [ 75.678856][ T5071] hardirqs last disabled at (5088): [] _raw_spin_lock_irqsave+0xb0/0x120 [ 75.688856][ T5071] softirqs last enabled at (5024): [] __irq_exit_rcu+0xf2/0x1c0 [ 75.698147][ T5071] softirqs last disabled at (4995): [] __irq_exit_rcu+0xf2/0x1c0 [ 75.707439][ T5071] Preemption disabled at: [ 75.707451][ T5071] [<0000000000000000>] 0x0 [ 75.716183][ T5071] CPU: 0 PID: 5071 Comm: syz-executor255 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 75.726250][ T5071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 75.736304][ T5071] Call Trace: [ 75.739611][ T5071] [ 75.742546][ T5071] dump_stack_lvl+0x241/0x360 [ 75.747248][ T5071] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.752466][ T5071] ? __pfx__printk+0x10/0x10 [ 75.757092][ T5071] __might_resched+0x5d4/0x780 [ 75.761879][ T5071] ? __pfx___might_resched+0x10/0x10 [ 75.767180][ T5071] ? __pfx_validate_chain+0x10/0x10 [ 75.772395][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.777281][ T5071] ? stack_trace_save+0x118/0x1d0 [ 75.782330][ T5071] console_lock+0x20/0x1b0 [ 75.786765][ T5071] do_con_write+0x114/0x7820 [ 75.791371][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.796236][ T5071] ? lockdep_unlock+0x16a/0x300 [ 75.801121][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.805982][ T5071] ? mark_lock+0x2a4/0x350 [ 75.810414][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.815274][ T5071] ? __lock_acquire+0x1346/0x1fd0 [ 75.820335][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.825202][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.830069][ T5071] ? __pfx_do_con_write+0x10/0x10 [ 75.835107][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.839965][ T5071] ? do_raw_spin_lock+0x14f/0x370 [ 75.845016][ T5071] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 75.850411][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.855277][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.860138][ T5071] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 75.866054][ T5071] ? __pfx___mutex_trylock_common+0x10/0x10 [ 75.871969][ T5071] con_write+0x26/0x40 [ 75.876049][ T5071] gsmld_write+0x100/0x130 [ 75.880492][ T5071] ? __pfx_gsmld_write+0x10/0x10 [ 75.885445][ T5071] file_tty_write+0x551/0x9b0 [ 75.890152][ T5071] vfs_write+0xa86/0xcb0 [ 75.894425][ T5071] ? __pfx_vfs_write+0x10/0x10 [ 75.899219][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.904077][ T5071] ? lockdep_hardirqs_on+0x99/0x150 [ 75.909297][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.914159][ T5071] ? __fdget_pos+0x1a2/0x320 [ 75.918776][ T5071] ksys_write+0x1a0/0x2c0 [ 75.923127][ T5071] ? __pfx_ksys_write+0x10/0x10 [ 75.928000][ T5071] ? do_syscall_64+0x10a/0x240 [ 75.932771][ T5071] ? srso_return_thunk+0x5/0x5f [ 75.937631][ T5071] ? syscall_trace_enter+0x5f/0x150 [ 75.942845][ T5071] do_syscall_64+0xfd/0x240 [ 75.947362][ T5071] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 75.953295][ T5071] RIP: 0033:0x7f3939d5a569 [ 75.957720][ T5071] 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 [ 75.977332][ T5071] RSP: 002b:00007ffdd5ff10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.985755][ T5071] RAX: ffffffffffffffda RBX: 00007ffdd5ff1298 RCX: 00007f3939d5a569 [ 75.993733][ T5071] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 write(4, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 76.001706][ T