[ 85.426096][ T27] audit: type=1800 audit(1582863303.546:26): pid=9640 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 86.418959][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 86.418971][ T27] audit: type=1800 audit(1582863304.556:29): pid=9640 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 86.445657][ T27] audit: type=1800 audit(1582863304.556:30): pid=9640 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 94.935542][ T9794] ------------[ cut here ]------------ [ 94.941147][ T9794] WARNING: CPU: 1 PID: 9794 at net/core/stream.c:208 sk_stream_kill_queues+0x40d/0x590 [ 94.950762][ T9794] Kernel panic - not syncing: panic_on_warn set ... [ 94.957342][ T9794] CPU: 1 PID: 9794 Comm: syz-executor860 Not tainted 5.6.0-rc3-syzkaller #0 [ 94.966138][ T9794] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.976240][ T9794] Call Trace: [ 94.979574][ T9794] dump_stack+0x197/0x210 [ 94.983909][ T9794] ? sk_stream_kill_queues+0x350/0x590 [ 94.989404][ T9794] panic+0x2e3/0x75c [ 94.993336][ T9794] ? add_taint.cold+0x16/0x16 [ 94.998010][ T9794] ? printk+0xba/0xed [ 95.001979][ T9794] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 95.007448][ T9794] ? __warn.cold+0x14/0x3e [ 95.011916][ T9794] ? __warn+0xd9/0x1cf [ 95.016031][ T9794] ? sk_stream_kill_queues+0x40d/0x590 [ 95.021489][ T9794] __warn.cold+0x2f/0x3e [ 95.026418][ T9794] ? report_bug.cold+0x63/0xb2 [ 95.031169][ T9794] ? sk_stream_kill_queues+0x40d/0x590 [ 95.036675][ T9794] report_bug+0x289/0x300 [ 95.041131][ T9794] do_error_trap+0x11b/0x200 [ 95.045721][ T9794] do_invalid_op+0x37/0x50 [ 95.050132][ T9794] ? sk_stream_kill_queues+0x40d/0x590 [ 95.055582][ T9794] invalid_op+0x23/0x30 [ 95.059723][ T9794] RIP: 0010:sk_stream_kill_queues+0x40d/0x590 [ 95.065772][ T9794] Code: 48 c1 ea 03 0f b6 04 02 84 c0 74 04 3c 03 7e 41 44 8b a3 f8 01 00 00 e9 5f ff ff ff e8 9c 3e 40 fb 0f 0b eb 96 e8 93 3e 40 fb <0f> 0b eb a1 e8 8a 3e 40 fb 0f 0b e9 9f fe ff ff 4c 89 ef e8 0b e4 [ 95.085368][ T9794] RSP: 0018:ffffc90002147b30 EFLAGS: 00010293 [ 95.091457][ T9794] RAX: ffff88809375a000 RBX: 0000000000000000 RCX: ffffffff8635485d [ 95.099422][ T9794] RDX: 0000000000000000 RSI: ffffffff863548bd RDI: 0000000000000005 [ 95.107386][ T9794] RBP: ffffc90002147b70 R08: ffff88809375a000 R09: ffffed1015d2707c [ 95.115383][ T9794] R10: ffffed1015d2707b R11: ffff8880ae9383db R12: 0000000000000fe3 [ 95.123386][ T9794] R13: ffff88808d750238 R14: ffffffff8c406240 R15: ffff88808d750178 [ 95.131446][ T9794] ? sk_stream_kill_queues+0x3ad/0x590 [ 95.136920][ T9794] ? sk_stream_kill_queues+0x40d/0x590 [ 95.142383][ T9794] inet_csk_destroy_sock+0x1b7/0x4c0 [ 95.147661][ T9794] tcp_close+0xe17/0x12b0 [ 95.151993][ T9794] inet_release+0xed/0x200 [ 95.156448][ T9794] __sock_release+0xce/0x280 [ 95.161047][ T9794] sock_close+0x1e/0x30 [ 95.165196][ T9794] __fput+0x2ff/0x890 [ 95.169166][ T9794] ? __sock_release+0x280/0x280 [ 95.174005][ T9794] ____fput+0x16/0x20 [ 95.178012][ T9794] task_work_run+0x145/0x1c0 [ 95.182639][ T9794] do_exit+0xba9/0x2f50 [ 95.186827][ T9794] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.193075][ T9794] ? mm_update_next_owner+0x7c0/0x7c0 [ 95.198438][ T9794] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 95.204413][ T9794] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.209893][ T9794] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.215385][ T9794] do_group_exit+0x135/0x360 [ 95.220001][ T9794] __x64_sys_exit_group+0x44/0x50 [ 95.225071][ T9794] do_syscall_64+0xfa/0x790 [ 95.229571][ T9794] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.235448][ T9794] RIP: 0033:0x43eff8 [ 95.239329][ T9794] Code: Bad RIP value. [ 95.243373][ T9794] RSP: 002b:00007ffe4d2d02b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 95.251802][ T9794] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043eff8 [ 95.259765][ T9794] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 95.267728][ T9794] RBP: 00000000004be808 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 95.275722][ T9794] R10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000000001 [ 95.283686][ T9794] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 95.292918][ T9794] Kernel Offset: disabled [ 95.297306][ T9794] Rebooting in 86400 seconds..