[....] Starting enhanced syslogd: rsyslogd[ 15.258891] audit: type=1400 audit(1556600459.233:4): avc: denied { syslog } for pid=1924 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.746890] netlink: 52 bytes leftover after parsing attributes in process `syz-executor595'. [ 43.755863] ------------[ cut here ]------------ [ 43.760667] WARNING: CPU: 0 PID: 2082 at net/xfrm/xfrm_user.c:2210 xfrm_add_acquire+0x7a1/0x9c0() [ 43.769695] BAD policy passed [ 43.772842] Kernel panic - not syncing: panic_on_warn set ... [ 43.772842] [ 43.780185] CPU: 0 PID: 2082 Comm: syz-executor595 Not tainted 4.4.174+ #4 [ 43.787173] 0000000000000000 8bc1737cd3d2297a ffff8801d3c5f3f0 ffffffff81aad1a1 [ 43.795204] ffff8801d3c5f540 ffffffff82835ee0 ffffffff82a9d500 00000000000008a2 [ 43.803193] ffffffff825836c1 ffff8801d3c5f4d0 ffffffff813a48c2 0000000041b58ab3 [ 43.811178] Call Trace: [ 43.813743] [] dump_stack+0xc1/0x120 [ 43.819085] [] ? xfrm_add_acquire+0x7a1/0x9c0 [ 43.825207] [] panic+0x1b9/0x37b [ 43.830202] [] ? add_taint.cold+0x16/0x16 [ 43.835977] [] ? vprintk_emit+0x248/0x820 [ 43.842058] [] ? warn_slowpath_common.cold+0x5/0x20 [ 43.848904] [] warn_slowpath_common.cold+0x20/0x20 [ 43.855461] [] warn_slowpath_fmt+0xbf/0x100 [ 43.861407] [] ? warn_slowpath_common+0x120/0x120 [ 43.867877] [] ? lockdep_init_map+0x114/0x1520 [ 43.874094] [] ? __raw_spin_lock_init+0x2d/0x100 [ 43.880485] [] xfrm_add_acquire+0x7a1/0x9c0 [ 43.886459] [] ? log_wakeup_reason.cold+0x145/0x145 [ 43.893106] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 43.899935] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 43.906947] [] ? xfrm_policy_construct+0x770/0x770 [ 43.913509] [] ? nla_parse+0x15f/0x1c0 [ 43.919024] [] ? xfrm_policy_construct+0x770/0x770 [ 43.925579] [] xfrm_user_rcv_msg+0x37c/0x630 [ 43.931637] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 43.937772] [] ? trace_hardirqs_on+0x10/0x10 [ 43.943846] [] ? __lock_acquire+0xa4f/0x4f50 [ 43.949891] [] ? mutex_trylock+0x500/0x500 [ 43.955757] [] netlink_rcv_skb+0xd4/0x2e0 [ 43.961537] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 43.967581] [] xfrm_netlink_rcv+0x70/0x90 [ 43.973365] [] netlink_unicast+0x4d7/0x700 [ 43.979320] [] ? netlink_sendskb+0x60/0x60 [ 43.985184] [] netlink_sendmsg+0x6b6/0xc80 [ 43.991049] [] ? nlmsg_notify+0x170/0x170 [ 43.996847] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 44.003334] [] ? security_socket_sendmsg+0x8f/0xc0 [ 44.009907] [] ? nlmsg_notify+0x170/0x170 [ 44.015682] [] sock_sendmsg+0xbe/0x110 [ 44.021198] [] ___sys_sendmsg+0x769/0x890 [ 44.026973] [] ? copy_msghdr_from_user+0x550/0x550 [ 44.033531] [] ? __alloc_pages_direct_compact+0x220/0x220 [ 44.040697] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 44.047427] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 44.054172] [] ? check_preemption_disabled+0x3c/0x200 [ 44.061100] [] ? check_preemption_disabled+0x3c/0x200 [ 44.067920] [] ? __fd_install+0x25b/0x640 [ 44.073857] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 44.080589] [] ? __fget_light+0xa3/0x1f0 [ 44.086298] [] ? __fdget+0x1b/0x20 [ 44.091469] [] __sys_sendmsg+0xc5/0x160 [ 44.097074] [] ? SyS_shutdown+0x1a0/0x1a0 [ 44.102849] [] ? retint_user+0x18/0x3c [ 44.108386] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 44.115202] [] SyS_sendmsg+0x2d/0x50 [ 44.120544] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 44.127430] Kernel Offset: disabled [ 44.131074] Rebooting in 86400 seconds..