[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.141' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.472458] ------------[ cut here ]------------ [ 33.477315] WARNING: CPU: 1 PID: 7979 at net/core/stream.c:212 sk_stream_kill_queues+0x2a3/0x380 [ 33.486312] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 33.486312] [ 33.494361] CPU: 1 PID: 7979 Comm: syz-executor753 Not tainted 4.14.307-syzkaller #0 [ 33.502226] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 33.511757] Call Trace: [ 33.514336] dump_stack+0x1b2/0x281 [ 33.517955] panic+0x21d/0x451 [ 33.521135] ? add_taint.cold+0x16/0x16 [ 33.525114] ? log_store.cold+0x16/0x16 [ 33.529080] ? sk_stream_kill_queues+0x2a3/0x380 [ 33.533831] check_panic_on_warn.cold+0x19/0x35 [ 33.538490] __warn+0xdf/0x1e0 [ 33.541692] ? ist_end_non_atomic+0x10/0x10 [ 33.546015] ? sk_stream_kill_queues+0x2a3/0x380 [ 33.550764] report_bug+0x208/0x250 [ 33.554390] do_error_trap+0x195/0x2d0 [ 33.558280] ? math_error+0x2d0/0x2d0 [ 33.562078] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.567310] ? debug_check_no_obj_freed+0x2c0/0x680 [ 33.572340] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.577237] invalid_op+0x1b/0x40 [ 33.580773] RIP: 0010:sk_stream_kill_queues+0x2a3/0x380 [ 33.586122] RSP: 0018:ffff88808f13f990 EFLAGS: 00010297 [ 33.591475] RAX: ffff888097d7a040 RBX: ffff88809815c040 RCX: 0000000000000000 [ 33.598942] RDX: 0000000000000000 RSI: ffff888097d7a8f0 RDI: ffff88809815c278 [ 33.606205] RBP: 0000000000000b00 R08: 0000000000000001 R09: 0000000000000000 [ 33.613548] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809815c230 [ 33.620803] R13: ffffffff8c9b7760 R14: ffffed101302b83b R15: ffff88809815c1d8 [ 33.628082] inet_csk_destroy_sock+0x171/0x400 [ 33.632665] tcp_done+0x1b8/0x210 [ 33.636111] tcp_rcv_state_process+0x1f0a/0x4af0 [ 33.640902] ? tcp_finish_connect+0x6c0/0x6c0 [ 33.645398] ? skb_clone+0x126/0x9a0 [ 33.649116] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 33.654560] ? memcpy+0x35/0x50 [ 33.657849] ? memcpy+0x35/0x50 [ 33.661122] ? skb_clone+0x6ac/0x9a0 [ 33.664824] tcp_v6_do_rcv+0x3d5/0x13e0 [ 33.668788] __release_sock+0x12a/0x350 [ 33.672754] tcp_close+0x548/0xed0 [ 33.676284] ? lock_acquire+0x170/0x3f0 [ 33.680250] ? ip_mc_drop_socket+0x16/0x220 [ 33.684562] inet_release+0xdf/0x1b0 [ 33.688261] inet6_release+0x4c/0x70 [ 33.691961] __sock_release+0xcd/0x2b0 [ 33.695835] ? __sock_release+0x2b0/0x2b0 [ 33.699974] sock_close+0x15/0x20 [ 33.703436] __fput+0x25f/0x7a0 [ 33.706707] task_work_run+0x11f/0x190 [ 33.710589] do_exit+0xa44/0x2850 [ 33.714120] ? __do_page_fault+0x571/0xad0 [ 33.718339] ? mm_update_next_owner+0x5b0/0x5b0 [ 33.722999] ? lock_downgrade+0x740/0x740 [ 33.727154] do_group_exit+0x100/0x2e0 [ 33.731033] SyS_exit_group+0x19/0x20 [ 33.734818] ? do_group_exit+0x2e0/0x2e0 [ 33.738880] do_syscall_64+0x1d5/0x640 [ 33.742768] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 33.747944] RIP: 0033:0x7fab93305c79 [ 33.751641] RSP: 002b:00007ffe10ab1948 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 33.759332] RAX: ffffffffffffffda RBX: 00007fab93379270 RCX: 00007fab93305c79 [ 33.766674] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 33.773950] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000001c [ 33.781380] R10: 0000000020000008 R11: 0000000000000246 R12: 00007fab93379270 [ 33.788633] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 33.796242] Kernel Offset: disabled [ 33.799913] Rebooting in 86400 seconds..