[....] Starting enhanced syslogd: rsyslogd[ 13.191361] audit: type=1400 audit(1568433488.185:4): avc: denied { syslog } for pid=1920 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] 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 '10.128.0.188' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 48.156705] netlink: 12 bytes leftover after parsing attributes in process `syz-executor903'. [ 48.168745] netlink: 12 bytes leftover after parsing attributes in process `syz-executor903'. [ 48.179655] ------------[ cut here ]------------ [ 48.184413] WARNING: CPU: 1 PID: 2086 at net/xfrm/xfrm_policy.c:770 xfrm_policy_insert+0x600/0xf20() [ 48.193814] Kernel panic - not syncing: panic_on_warn set ... [ 48.193814] [ 48.201291] CPU: 1 PID: 2086 Comm: syz-executor903 Not tainted 4.4.174+ #4 [ 48.208277] 0000000000000000 201083044d439bc8 ffff8801cf147428 ffffffff81aad1a1 [ 48.216272] 0000000000000000 ffffffff82835ee0 ffffffff82a9b140 0000000000000302 [ 48.224272] ffffffff82548f00 ffff8801cf147508 ffffffff813a48c2 0000000041b58ab3 [ 48.232332] Call Trace: [ 48.234897] [] dump_stack+0xc1/0x120 [ 48.240241] [] ? xfrm_policy_insert+0x600/0xf20 [ 48.246541] [] panic+0x1b9/0x37b [ 48.251535] [] ? add_taint.cold+0x16/0x16 [ 48.257309] [] ? __debug_object_init+0x193/0x880 [ 48.263689] [] ? warn_slowpath_common.cold+0x5/0x20 [ 48.270329] [] warn_slowpath_common.cold+0x20/0x20 [ 48.276886] [] warn_slowpath_null+0x2a/0x30 [ 48.282832] [] xfrm_policy_insert+0x600/0xf20 [ 48.288952] [] xfrm_add_policy+0x23c/0x4d0 [ 48.294812] [] ? xfrm_add_acquire+0x9c0/0x9c0 [ 48.300932] [] ? validate_nla+0x1c0/0x4d0 [ 48.306705] [] ? nla_parse+0x15f/0x1c0 [ 48.312223] [] ? xfrm_add_acquire+0x9c0/0x9c0 [ 48.318341] [] xfrm_user_rcv_msg+0x37c/0x630 [ 48.324376] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 48.330409] [] ? trace_hardirqs_on+0x10/0x10 [ 48.336458] [] ? __lock_acquire+0xa4f/0x4f50 [ 48.342492] [] ? mutex_trylock+0x500/0x500 [ 48.348358] [] netlink_rcv_skb+0xd4/0x2e0 [ 48.354134] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 48.360170] [] xfrm_netlink_rcv+0x70/0x90 [ 48.365946] [] netlink_unicast+0x4d7/0x700 [ 48.371815] [] ? netlink_sendskb+0x60/0x60 [ 48.377674] [] netlink_sendmsg+0x6b6/0xc80 [ 48.383537] [] ? nlmsg_notify+0x170/0x170 [ 48.389309] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 48.395789] [] ? security_socket_sendmsg+0x8f/0xc0 [ 48.402342] [] ? nlmsg_notify+0x170/0x170 [ 48.408117] [] sock_sendmsg+0xbe/0x110 [ 48.413637] [] ___sys_sendmsg+0x769/0x890 [ 48.419428] [] ? copy_msghdr_from_user+0x550/0x550 [ 48.425983] [] ? trace_hardirqs_on+0x10/0x10 [ 48.432029] [] ? check_preemption_disabled+0x3c/0x200 [ 48.438840] [] ? check_preemption_disabled+0x3c/0x200 [ 48.445656] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 48.452382] [] ? check_preemption_disabled+0x3c/0x200 [ 48.459208] [] ? check_preemption_disabled+0x3c/0x200 [ 48.466022] [] ? __fd_install+0x220/0x640 [ 48.471793] [] ? __fd_install+0x25b/0x640 [ 48.477564] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 48.484298] [] ? __fget_light+0xa3/0x1f0 [ 48.489991] [] ? __fdget+0x1b/0x20 [ 48.495171] [] __sys_sendmsg+0xc5/0x160 [ 48.500770] [] ? SyS_shutdown+0x1a0/0x1a0 [ 48.506543] [] ? move_addr_to_kernel+0x60/0x60 [ 48.512752] [] SyS_sendmsg+0x2d/0x50 [ 48.518091] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 48.525197] Kernel Offset: disabled [ 48.528861] Rebooting in 86400 seconds..