[....] Starting enhanced syslogd: rsyslogd[ 13.429013] audit: type=1400 audit(1547799255.463:4): avc: denied { syslog } for pid=1928 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[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.45' (ECDSA) to the list of known hosts. 2019/01/18 08:14:39 parsed 1 programs 2019/01/18 08:14:41 executed programs: 0 syzkaller login: [ 39.700138] netlink: 12 bytes leftover after parsing attributes in process `syz-executor4'. [ 39.720285] netlink: 12 bytes leftover after parsing attributes in process `syz-executor4'. [ 39.734077] ------------[ cut here ]------------ [ 39.738874] WARNING: CPU: 0 PID: 2252 at net/xfrm/xfrm_policy.c:770 xfrm_policy_insert+0x600/0xf20() [ 39.748178] Kernel panic - not syncing: panic_on_warn set ... [ 39.748178] [ 39.755518] CPU: 0 PID: 2252 Comm: syz-executor4 Not tainted 4.4.171+ #9 [ 39.755598] netlink: 12 bytes leftover after parsing attributes in process `syz-executor2'. [ 39.757244] netlink: 12 bytes leftover after parsing attributes in process `syz-executor2'. [ 39.757266] ------------[ cut here ]------------ [ 39.757277] WARNING: CPU: 1 PID: 2262 at net/xfrm/xfrm_policy.c:770 xfrm_policy_insert+0x600/0xf20() [ 39.757279] Modules linked in: [ 39.796376] 0000000000000000 b785d6042b40872c ffff8800b4d9f428 ffffffff81aaca21 [ 39.804451] 0000000000000000 ffffffff82835ee0 ffffffff82a9ae40 0000000000000302 [ 39.812472] ffffffff82547970 ffff8800b4d9f508 ffffffff813a46b2 0000000041b58ab3 [ 39.820459] Call Trace: [ 39.823063] [] dump_stack+0xc1/0x120 [ 39.828399] [] ? xfrm_policy_insert+0x600/0xf20 [ 39.834694] [] panic+0x1b9/0x37b [ 39.839682] [] ? add_taint.cold+0x16/0x16 [ 39.845477] [] ? __debug_object_init+0x193/0x880 [ 39.851972] [] ? warn_slowpath_common.cold+0x5/0x20 [ 39.858620] [] warn_slowpath_common.cold+0x20/0x20 [ 39.865244] [] warn_slowpath_null+0x2a/0x30 [ 39.871188] [] xfrm_policy_insert+0x600/0xf20 [ 39.877305] [] xfrm_add_policy+0x23c/0x4d0 [ 39.883162] [] ? xfrm_add_acquire+0x9c0/0x9c0 [ 39.889282] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 39.896180] [] ? nla_parse+0x15f/0x1c0 [ 39.901688] [] ? xfrm_add_acquire+0x9c0/0x9c0 [ 39.907806] [] xfrm_user_rcv_msg+0x37c/0x630 [ 39.913836] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 39.919869] [] ? trace_hardirqs_on+0x10/0x10 [ 39.925900] [] ? __lock_acquire+0xa4f/0x4f50 [ 39.931929] [] ? mutex_trylock+0x500/0x500 [ 39.937785] [] netlink_rcv_skb+0xd4/0x2e0 [ 39.943554] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 39.949590] [] xfrm_netlink_rcv+0x70/0x90 [ 39.955357] [] netlink_unicast+0x4d7/0x700 [ 39.961212] [] ? netlink_sendskb+0x60/0x60 [ 39.967072] [] netlink_sendmsg+0x6b6/0xc80 [ 39.972958] [] ? nlmsg_notify+0x170/0x170 [ 39.978781] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 39.985252] [] ? security_socket_sendmsg+0x8f/0xc0 [ 39.991803] [] ? nlmsg_notify+0x170/0x170 [ 39.997575] [] sock_sendmsg+0xbe/0x110 [ 40.003111] [] ___sys_sendmsg+0x769/0x890 [ 40.008882] [] ? copy_msghdr_from_user+0x550/0x550 [ 40.015430] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 40.022157] [] ? check_preemption_disabled+0x3c/0x200 [ 40.028969] [] ? check_preemption_disabled+0x3c/0x200 [ 40.035782] [] ? __fget+0x13b/0x370 [ 40.041031] [] ? __fget+0x162/0x370 [ 40.046284] [] ? __fget+0x47/0x370 [ 40.051444] [] ? __fget_light+0xa3/0x1f0 [ 40.057124] [] ? __fdget+0x1b/0x20 [ 40.062288] [] __sys_sendmsg+0xc5/0x160 [ 40.067885] [] ? SyS_shutdown+0x1a0/0x1a0 [ 40.073653] [] ? SyS_clock_gettime+0x118/0x1e0 [ 40.079853] [] ? SyS_clock_settime+0x220/0x220 [ 40.086067] [] SyS_sendmsg+0x2d/0x50 [ 40.091423] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 40.097992] CPU: 1 PID: 2262 Comm: syz-executor2 Not tainted 4.4.171+ #9 [ 40.104822] 0000000000000000 b1fd8651cf7bcf41 ffff8801d219f508 ffffffff81aaca21 [ 40.112877] 0000000000000000 0000000000000009 ffffffff82a9ae40 0000000000000302 [ 40.120920] ffffffff82547970 ffff8801d219f548 ffffffff810d3849 0000000000000246 [ 40.129019] Call Trace: [ 40.131585] [] dump_stack+0xc1/0x120 [ 40.136928] [] ? xfrm_policy_insert+0x600/0xf20 [ 40.143227] [] warn_slowpath_common+0xd9/0x120 [ 40.149440] [] warn_slowpath_null+0x2a/0x30 [ 40.155395] [] xfrm_policy_insert+0x600/0xf20 [ 40.161552] [] xfrm_add_policy+0x23c/0x4d0 [ 40.167419] [] ? xfrm_add_acquire+0x9c0/0x9c0 [ 40.173549] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 40.180461] [] ? nla_parse+0x15f/0x1c0 [ 40.185984] [] ? xfrm_add_acquire+0x9c0/0x9c0 [ 40.192123] [] xfrm_user_rcv_msg+0x37c/0x630 [ 40.198199] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 40.204244] [] ? trace_hardirqs_on+0x10/0x10 [ 40.210288] [] ? __lock_acquire+0xa4f/0x4f50 [ 40.216334] [] ? mutex_trylock+0x500/0x500 [ 40.222233] [] netlink_rcv_skb+0xd4/0x2e0 [ 40.228017] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 40.234061] [] xfrm_netlink_rcv+0x70/0x90 [ 40.239844] [] netlink_unicast+0x4d7/0x700 [ 40.245719] [] ? netlink_sendskb+0x60/0x60 [ 40.251604] [] netlink_sendmsg+0x6b6/0xc80 [ 40.257474] [] ? nlmsg_notify+0x170/0x170 [ 40.263263] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 40.269750] [] ? security_socket_sendmsg+0x8f/0xc0 [ 40.276317] [] ? nlmsg_notify+0x170/0x170 [ 40.282101] [] sock_sendmsg+0xbe/0x110 [ 40.287638] [] ___sys_sendmsg+0x769/0x890 [ 40.293436] [] ? copy_msghdr_from_user+0x550/0x550 [ 40.300000] [] ? __lock_acquire+0xa4f/0x4f50 [ 40.306048] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 40.312815] [] ? check_preemption_disabled+0x3c/0x200 [ 40.319679] [] ? check_preemption_disabled+0x3c/0x200 [ 40.326505] [] ? __fget+0x13b/0x370 [ 40.331772] [] ? __fget+0x162/0x370 [ 40.337048] [] ? __fget+0x47/0x370 [ 40.342222] [] ? __fget_light+0xa3/0x1f0 [ 40.347917] [] ? __fdget+0x1b/0x20 [ 40.353091] [] __sys_sendmsg+0xc5/0x160 [ 40.358697] [] ? SyS_shutdown+0x1a0/0x1a0 [ 40.364567] [] ? SyS_clock_gettime+0x118/0x1e0 [ 40.370784] [] ? SyS_clock_settime+0x220/0x220 [ 40.377005] [] SyS_sendmsg+0x2d/0x50 [ 40.382352] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 40.389231] Kernel Offset: disabled [ 40.392868] Rebooting in 86400 seconds..