[....] Starting enhanced syslogd: rsyslogd[ 10.124417] audit: type=1400 audit(1515809233.468:4): avc: denied { syslog } for pid=3177 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.203' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 19.707809] ------------[ cut here ]------------ [ 19.708563] WARNING: CPU: 0 PID: 3327 at net/core/sock_reuseport.c:118 reuseport_add_sock+0x54b/0x650 [ 19.710172] socket already in reuseport group[ 19.711187] Kernel panic - not syncing: panic_on_warn set ... [ 19.711187] [ 19.712418] CPU: 0 PID: 3327 Comm: syzkaller221554 Not tainted 4.9.76-g8e170a5 #21 [ 19.713468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.714741] ffff8801cd53fa68 ffffffff81d93149 ffffffff83a47180 ffff8801cd53fb40 [ 19.715900] ffffffff83eea700 ffffffff82f9bbeb 0000000000000009 ffff8801cd53fb30 [ 19.717075] ffffffff8142e371 0000000041b58ab3 ffffffff84189678 ffffffff8142e1b5 [ 19.718224] Call Trace: [ 19.718588] [] dump_stack+0xc1/0x128 [ 19.719312] [] ? reuseport_add_sock+0x54b/0x650 [ 19.720145] [] panic+0x1bc/0x3a8 [ 19.720847] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 19.721925] [] ? vprintk_emit+0x3ad/0x750 [ 19.722702] [] ? __warn+0x1a9/0x1e0 [ 19.723485] [] ? reuseport_add_sock+0x54b/0x650 [ 19.724326] [] __warn+0x1c4/0x1e0 [ 19.725060] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 19.725991] [] warn_slowpath_fmt+0xc4/0x110 [ 19.726790] [] ? __warn+0x1e0/0x1e0 [ 19.727492] [] ? reuseport_add_sock+0x52c/0x650 [ 19.731351] [] reuseport_add_sock+0x54b/0x650 [ 19.737461] [] ? trace_hardirqs_on+0xd/0x10 [ 19.743407] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 19.749700] [] ? _raw_read_unlock_bh+0x30/0x40 [ 19.755899] [] __inet_hash+0x5c0/0x900 [ 19.761406] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 19.768222] [] ? udp4_seq_show+0x500/0x500 [ 19.777033] [] inet_hash+0x68/0xa0 [ 19.782190] [] inet_csk_listen_start+0x2b9/0x360 [ 19.788562] [] inet_listen+0x12c/0x2e0 [ 19.794076] [] SyS_listen+0x188/0x260 [ 19.800189] [] ? SyS_bind+0x30/0x30 [ 19.805436] [] ? __do_page_fault+0x3bd/0xd40 [ 19.811462] [] ? do_fast_syscall_32+0xcf/0x890 [ 19.817658] [] ? SyS_bind+0x30/0x30 [ 19.822907] [] do_fast_syscall_32+0x2f7/0x890 [ 19.829018] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 19.835652] [] entry_SYSENTER_compat+0x74/0x83 [ 19.842764] Dumping ftrace buffer: [ 19.846323] (ftrace buffer empty) [ 19.850004] Kernel Offset: disabled [ 19.853605] Rebooting in 86400 seconds..