[....] Starting enhanced syslogd: rsyslogd[   12.800326] audit: type=1400 audit(1517734219.704:4): avc:  denied  { syslog } for  pid=3849 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 '10.128.0.61' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
Cannot find device "bridge0"
Cannot find device "bridge0"
Cannot find device "bridge0"
Cannot find device "bridge0"
Cannot find device "vcan0"
Cannot find device "vcan0"
Cannot find device "vcan0"
syzkaller login: [   93.500421] ip (4100) used greatest stack depth: 24592 bytes left
Cannot find device "vcan0"
RTNETLINK answers: Operation not supported
Cannot find device "gre0"
Cannot find device "gre0"
Cannot find device "gre0"
Cannot find device "gre0"
Cannot find device "gretap0"
Cannot find device "gretap0"
Cannot find device "gretap0"
Cannot find device "gretap0"
Cannot find device "ip_vti0"
Cannot find device "ip_vti0"
Cannot find device "ip_vti0"
Cannot find device "ip_vti0"
Cannot find device "ip6_vti0"
Cannot find device "ip6_vti0"
Cannot find device "ip6_vti0"
Cannot find device "ip6_vti0"
Cannot find device "ip6tnl0"
Cannot find device "ip6tnl0"
Cannot find device "ip6tnl0"
Cannot find device "ip6tnl0"
Cannot find device "ip6gre0"
Cannot find device "ip6gre0"
Cannot find device "ip6gre0"
Cannot find device "ip6gre0"
Cannot find device "ip6gretap0"
Cannot find device "ip6gretap0"
Cannot find device "ip6gretap0"
Cannot find device "ip6gretap0"
Cannot find device "erspan0"
Cannot find device "erspan0"
Cannot find device "erspan0"
Cannot find device "erspan0"
executing program
[   93.859470] BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller470645/4270
[   93.868206] caller is __this_cpu_preempt_check+0x1c/0x20
[   93.873649] CPU: 0 PID: 4270 Comm: syzkaller470645 Not tainted 4.9.79-g47af77b #26
[   93.881321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   93.890645]  ffff8801ce1a7490 ffffffff81d94b09 0000000000000000 ffffffff83c18800
[   93.898619]  ffffffff83f454c0 ffff8801cdec0000 0000000000000003 ffff8801ce1a74d0
[   93.906584]  ffffffff81dfc0e4 ffff8801ce1a74e8 ffffffff83f454c0 dffffc0000000000
[   93.914572] Call Trace:
[   93.917128]  [<ffffffff81d94b09>] dump_stack+0xc1/0x128
[   93.922463]  [<ffffffff81dfc0e4>] check_preemption_disabled+0x1d4/0x200
[   93.929185]  [<ffffffff81dfc14c>] __this_cpu_preempt_check+0x1c/0x20
[   93.935653]  [<ffffffff833fcdd8>] ipcomp_init_state+0x188/0x930
[   93.941682]  [<ffffffff81234b41>] ? __lock_is_held+0xa1/0xf0
[   93.947536]  [<ffffffff833691f0>] ipcomp4_init_state+0xb0/0x7d0
[   93.953561]  [<ffffffff833db4c7>] __xfrm_init_state+0x3e7/0xb30
[   93.959586]  [<ffffffff833fa626>] xfrm_add_sa+0x1916/0x2e40
[   93.965264]  [<ffffffff833f8d10>] ? xfrm_send_state_notify+0x17d0/0x17d0
[   93.972078]  [<ffffffff81e403d3>] ? nla_parse+0x213/0x260
[   93.977584]  [<ffffffff833f8d10>] ? xfrm_send_state_notify+0x17d0/0x17d0
[   93.984391]  [<ffffffff833eac73>] xfrm_user_rcv_msg+0x413/0x6a0
[   93.990425]  [<ffffffff833ea860>] ? xfrm_dump_sa_done+0xe0/0xe0
[   93.996454]  [<ffffffff8309537e>] netlink_rcv_skb+0x13e/0x370
[   94.002305]  [<ffffffff833ea860>] ? xfrm_dump_sa_done+0xe0/0xe0
[   94.008331]  [<ffffffff833e716f>] xfrm_netlink_rcv+0x6f/0x90
[   94.014097]  [<ffffffff83093f01>] netlink_unicast+0x511/0x750
[   94.019970]  [<ffffffff83093e2c>] ? netlink_unicast+0x43c/0x750
[   94.026005]  [<ffffffff830939f0>] ? netlink_attachskb+0x680/0x680
[   94.032227]  [<ffffffff83094a28>] netlink_sendmsg+0x8e8/0xc50
[   94.038083]  [<ffffffff83094140>] ? netlink_unicast+0x750/0x750
[   94.044111]  [<ffffffff81bf75cf>] ? selinux_socket_sendmsg+0x3f/0x50
[   94.050572]  [<ffffffff81bd60b9>] ? security_socket_sendmsg+0x89/0xb0
[   94.057123]  [<ffffffff83094140>] ? netlink_unicast+0x750/0x750
[   94.063152]  [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110
[   94.068656]  [<ffffffff82ed97a1>] ___sys_sendmsg+0x6d1/0x7e0
[   94.074425]  [<ffffffff82ed90d0>] ? copy_msghdr_from_user+0x550/0x550
[   94.080972]  [<ffffffff81465f97>] ? __lru_cache_add+0x187/0x250
[   94.086998]  [<ffffffff81dfbf4b>] ? check_preemption_disabled+0x3b/0x200
[   94.093818]  [<ffffffff815d1598>] ? __fget+0x228/0x3a0
[   94.099063]  [<ffffffff815d13b7>] ? __fget+0x47/0x3a0
[   94.104227]  [<ffffffff815d18d8>] ? __fget_light+0x188/0x1e0
[   94.109993]  [<ffffffff815d1948>] ? __fdget+0x18/0x20
[   94.115155]  [<ffffffff82edb7d6>] __sys_sendmsg+0xd6/0x190
[   94.120747]  [<ffffffff82edb700>] ? SyS_shutdown+0x1b0/0x1b0
[   94.126511]  [<ffffffff810de66c>] ? __do_page_fault+0x5ec/0xd40
[   94.132537]  [<ffffffff810de43d>] ? __do_page_fault+0x3bd/0xd40
[   94.138564]  [<ffffffff8123b63b>] ? trace_hardirqs_on_caller+0x38b/0x590
[   94.145368]  [<ffffffff82edb8bd>] SyS_sendmsg+0x2d/0x50
[   94.150709]  [<ffffffff838b346e>] entry_SYSCALL_64_fastpath+0x29/0xe8