./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2952927000 <...> Warning: Permanently added '10.128.1.161' (ED25519) to the list of known hosts. execve("./syz-executor2952927000", ["./syz-executor2952927000"], 0x7ffdf70b3f00 /* 10 vars */) = 0 brk(NULL) = 0x5555666e2000 brk(0x5555666e2d00) = 0x5555666e2d00 arch_prctl(ARCH_SET_FS, 0x5555666e2380) = 0 set_tid_address(0x5555666e2650) = 5056 set_robust_list(0x5555666e2660, 24) = 0 rseq(0x5555666e2ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2952927000", 4096) = 28 getrandom("\xa4\x70\x94\x4b\x13\x8d\x96\x49", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555666e2d00 brk(0x555566703d00) = 0x555566703d00 brk(0x555566704000) = 0x555566704000 mprotect(0x7faf768b7000, 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 [ 74.758514][ T5056] BUG: sleeping function called from invalid context at kernel/printk/printk.c:2634 [ 74.768124][ T5056] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5056, name: syz-executor295 [ 74.777604][ T5056] preempt_count: 1, expected: 0 [ 74.782459][ T5056] RCU nest depth: 0, expected: 0 [ 74.787391][ T5056] 3 locks held by syz-executor295/5056: [ 74.792933][ T5056] #0: ffff888022c2f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 74.802712][ T5056] #1: ffff888022c2f130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write+0x1f3/0x9b0 [ 74.813012][ T5056] #2: ffff88801c68e3e0 (&gsm->tx_lock){....}-{2:2}, at: gsmld_write+0x5f/0x130 [ 74.822109][ T5056] irq event stamp: 4166 [ 74.826265][ T5056] hardirqs last enabled at (4165): [] _raw_spin_unlock_irq+0x23/0x50 [ 74.836009][ T5056] hardirqs last disabled at (4166): [] _raw_spin_lock_irqsave+0xb0/0x120 [ 74.846000][ T5056] softirqs last enabled at (3962): [] __irq_exit_rcu+0xf2/0x1c0 [ 74.855285][ T5056] softirqs last disabled at (3947): [] __irq_exit_rcu+0xf2/0x1c0 [ 74.864613][ T5056] Preemption disabled at: [ 74.864623][ T5056] [<0000000000000000>] 0x0 [ 74.873377][ T5056] CPU: 0 PID: 5056 Comm: syz-executor295 Not tainted 6.8.0-syzkaller-01185-g855684c7d938 #0 [ 74.883468][ T5056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 74.893547][ T5056] Call Trace: [ 74.896847][ T5056] [ 74.899880][ T5056] dump_stack_lvl+0x1e7/0x2e0 [ 74.904587][ T5056] ? __pfx_dump_stack_lvl+0x10/0x10 [ 74.909805][ T5056] ? __pfx__printk+0x10/0x10 [ 74.914418][ T5056] __might_resched+0x5d4/0x780 [ 74.919202][ T5056] ? __pfx___might_resched+0x10/0x10 [ 74.924502][ T5056] ? __pfx_validate_chain+0x10/0x10 [ 74.929717][ T5056] ? stack_trace_save+0x118/0x1d0 [ 74.934772][ T5056] console_lock+0x20/0x1b0 [ 74.939208][ T5056] do_con_write+0x114/0x7820 [ 74.943820][ T5056] ? lockdep_unlock+0x16a/0x300 [ 74.948725][ T5056] ? mark_lock+0x2a4/0x350 [ 74.953163][ T5056] ? __lock_acquire+0x1346/0x1fd0 [ 74.958224][ T5056] ? __pfx_do_con_write+0x10/0x10 [ 74.963282][ T5056] ? do_raw_spin_lock+0x14f/0x370 [ 74.968332][ T5056] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 74.973735][ T5056] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 74.979652][ T5056] ? __pfx___mutex_trylock_common+0x10/0x10 [ 74.985575][ T5056] con_write+0x26/0x40 [ 74.989660][ T5056] gsmld_write+0xfe/0x130 [ 74.994040][ T5056] ? __pfx_gsmld_write+0x10/0x10 [ 74.998998][ T5056] file_tty_write+0x54f/0x9b0 [ 75.003700][ T5056] vfs_write+0xa84/0xcb0 [ 75.007978][ T5056] ? __pfx_vfs_write+0x10/0x10 [ 75.012775][ T5056] ? lockdep_hardirqs_on+0x99/0x150 [ 75.017991][ T5056] ? __fdget_pos+0x1a2/0x320 [ 75.022602][ T5056] ksys_write+0x1a0/0x2c0 [ 75.026951][ T5056] ? __pfx_ksys_write+0x10/0x10 [ 75.031814][ T5056] ? do_syscall_64+0x10a/0x240 [ 75.036602][ T5056] ? syscall_trace_enter+0x5f/0x150 [ 75.041817][ T5056] do_syscall_64+0xfb/0x240 [ 75.046344][ T5056] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 75.052258][ T5056] RIP: 0033:0x7faf76844569 [ 75.056687][ T5056] 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 [ 75.076408][ T5056] RSP: 002b:00007ffc0c7a11e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.084838][ T5056] RAX: ffffffffffffffda RBX: 00007ffc0c7a13b8 RCX: 00007faf76844569 [ 75.092825][ T5056] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 75.100809][ T5056] RBP: 00007faf768b7610 R08: 00007ffc0c7a13b8 R09: 00007ffc0c7a13b8 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 75.108792][