[ 36.626295][ T26] audit: type=1800 audit(1555149036.755:27): pid=7564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 36.654082][ T26] audit: type=1800 audit(1555149036.755:28): pid=7564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 37.338916][ T26] audit: type=1800 audit(1555149037.525:29): pid=7564 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 [ 37.359425][ T26] audit: type=1800 audit(1555149037.525:30): pid=7564 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 '10.128.0.154' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.960755][ T7716] WARNING: CPU: 0 PID: 7716 at include/net/sock.h:666 smc_unhash_sk+0x1ea/0x260 [ 46.970114][ T7716] Kernel panic - not syncing: panic_on_warn set ... [ 46.976778][ T7716] CPU: 0 PID: 7716 Comm: syz-executor514 Not tainted 5.1.0-rc4+ #135 [ 46.984818][ T7716] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.994963][ T7716] Call Trace: [ 46.998247][ T7716] dump_stack+0x172/0x1f0 [ 47.002560][ T7716] ? smc_unhash_sk+0x150/0x260 [ 47.007328][ T7716] panic+0x2cb/0x65c [ 47.011214][ T7716] ? __warn_printk+0xf3/0xf3 [ 47.015862][ T7716] ? smc_unhash_sk+0x1ea/0x260 [ 47.020627][ T7716] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.027025][ T7716] ? __warn.cold+0x5/0x45 [ 47.031342][ T7716] ? __warn+0xe8/0x1d0 [ 47.035400][ T7716] ? smc_unhash_sk+0x1ea/0x260 [ 47.040149][ T7716] __warn.cold+0x20/0x45 [ 47.044383][ T7716] ? smc_unhash_sk+0x1ea/0x260 [ 47.049237][ T7716] report_bug+0x263/0x2b0 [ 47.053549][ T7716] do_error_trap+0x11b/0x200 [ 47.058216][ T7716] do_invalid_op+0x37/0x50 [ 47.063094][ T7716] ? smc_unhash_sk+0x1ea/0x260 [ 47.067854][ T7716] invalid_op+0x14/0x20 [ 47.071992][ T7716] RIP: 0010:smc_unhash_sk+0x1ea/0x260 [ 47.077343][ T7716] Code: ff ff ff ff e8 57 e6 95 fe e8 82 9e 92 fa 4c 89 ef e8 ca 21 38 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 66 9e 92 fa <0f> 0b eb 86 4c 89 e7 e8 9a e7 ca fa e9 5f ff ff ff e8 b0 e7 ca fa [ 47.096959][ T7716] RSP: 0018:ffff888085e3fbd8 EFLAGS: 00010293 [ 47.103032][ T7716] RAX: ffff888090874080 RBX: ffff8880914f9240 RCX: ffffffff86ddf01e [ 47.110984][ T7716] RDX: 0000000000000000 RSI: ffffffff86ddf09a RDI: 0000000000000005 [ 47.119024][ T7716] RBP: ffff888085e3fc08 R08: ffff888090874080 R09: ffffed101229f259 [ 47.126979][ T7716] R10: ffffed101229f258 R11: ffff8880914f92c3 R12: ffff8880914f92c0 [ 47.134941][ T7716] R13: ffffffff895353e0 R14: ffff8880914f9268 R15: 0000000000000001 [ 47.142909][ T7716] ? smc_unhash_sk+0x16e/0x260 [ 47.147659][ T7716] ? smc_unhash_sk+0x1ea/0x260 [ 47.152447][ T7716] ? smc_unhash_sk+0x1ea/0x260 [ 47.157211][ T7716] smc_release+0x337/0x820 [ 47.161616][ T7716] __sock_release+0xd3/0x2b0 [ 47.166206][ T7716] ? __sock_release+0x2b0/0x2b0 [ 47.171050][ T7716] sock_close+0x1b/0x30 [ 47.175292][ T7716] __fput+0x2e5/0x8d0 [ 47.179273][ T7716] ____fput+0x16/0x20 [ 47.183259][ T7716] task_work_run+0x14a/0x1c0 [ 47.187853][ T7716] do_exit+0x90a/0x2fa0 [ 47.191999][ T7716] ? __ia32_sys_accept+0x31/0xb0 [ 47.196927][ T7716] ? mm_update_next_owner+0x640/0x640 [ 47.202284][ T7716] ? tomoyo_path_unlink+0xc0/0xe0 [ 47.207292][ T7716] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.212736][ T7716] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.218176][ T7716] do_group_exit+0x135/0x370 [ 47.222769][ T7716] __x64_sys_exit_group+0x44/0x50 [ 47.227780][ T7716] do_syscall_64+0x103/0x610 [ 47.232633][ T7716] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.238506][ T7716] RIP: 0033:0x43ee18 [ 47.242475][ T7716] Code: Bad RIP value. [ 47.246521][ T7716] RSP: 002b:00007ffc9ebae588 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 47.255006][ T7716] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee18 [ 47.262982][ T7716] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 47.271115][ T7716] RBP: 00000000004be628 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 47.279175][ T7716] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000001 [ 47.287214][ T7716] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 47.296020][ T7716] Kernel Offset: disabled [ 47.300393][ T7716] Rebooting in 86400 seconds..