[....] Starting enhanced syslogd: rsyslogd[ 13.298202] audit: type=1400 audit(1516307225.529:5): avc: denied { syslog } for pid=3497 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 syzkaller login: [ 19.343132] audit: type=1400 audit(1516307231.574:6): avc: denied { map } for pid=3636 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.15.246' (ECDSA) to the list of known hosts. executing program [ 25.592249] audit: type=1400 audit(1516307237.824:7): avc: denied { map } for pid=3650 comm="syzkaller270719" path="/root/syzkaller270719833" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 25.595234] kasan: CONFIG_KASAN_INLINE enabled [ 25.595246] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.595253] general protection fault: 0000 [#1] SMP KASAN [ 25.595258] Dumping ftrace buffer: [ 25.595261] (ftrace buffer empty) [ 25.595263] Modules linked in: [ 25.595271] CPU: 0 PID: 3650 Comm: syzkaller270719 Not tainted 4.15.0-rc8+ #268 [ 25.595275] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.595286] RIP: 0010:strlen+0x1f/0xa0 [ 25.595290] RSP: 0018:ffff8801bbe5f768 EFLAGS: 00010292 [ 25.595295] RAX: 0000000041b58ab3 RBX: ffff8801bcb05640 RCX: 000000000836b156 [ 25.595299] RDX: dffffc0000000000 RSI: ffff8801bc3657c0 RDI: 0000000041b58ab3 [ 25.595303] RBP: ffff8801bbe5f780 R08: 1ffff100377cbe55 R09: 0000000000000000 [ 25.595307] R10: ffff8801bbe5f770 R11: ffffed00377cbe40 R12: ffff8801bbe5f8a0 [ 25.595310] R13: 0000000041b58ab3 R14: 0000000000000040 R15: 1ffff100377cbef8 [ 25.595316] FS: 00000000024ed880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 25.595319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.595323] CR2: 0000000020007000 CR3: 00000001bc3ca003 CR4: 00000000001606f0 [ 25.595330] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.595333] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.595335] Call Trace: [ 25.595345] ? lock_acquire+0x1d5/0x580 [ 25.595353] netlink_ack+0x120/0xa10 [ 25.595363] ? netlink_sendmsg+0xe60/0xe60 [ 25.595371] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.595378] ? netlink_deliver_tap+0x171/0xcf0 [ 25.595387] ? rcu_note_context_switch+0x710/0x710 [ 25.595396] netlink_rcv_skb+0x2d1/0x400 [ 25.595402] ? genl_family_rcv_msg+0xfb0/0xfb0 [ 25.595409] ? netlink_ack+0xa10/0xa10 [ 25.595414] ? genl_rcv+0x19/0x40 [ 25.595422] ? __down_interruptible+0x6b0/0x6b0 [ 25.595429] ? netlink_skb_destructor+0x1d0/0x1d0 [ 25.595439] ? selinux_nlmsg_lookup+0x32b/0x430 [ 25.595447] genl_rcv+0x28/0x40 [ 25.595453] netlink_unicast+0x4ee/0x700 [ 25.595464] ? netlink_attachskb+0x8a0/0x8a0 [ 25.595474] ? security_netlink_send+0x81/0xb0 [ 25.595482] netlink_sendmsg+0xa4a/0xe60 [ 25.595493] ? netlink_unicast+0x700/0x700 [ 25.595503] ? security_socket_sendmsg+0x89/0xb0 [ 25.595509] ? netlink_unicast+0x700/0x700 [ 25.595517] sock_sendmsg+0xca/0x110 [ 25.595525] ___sys_sendmsg+0x767/0x8b0 [ 25.595535] ? copy_msghdr_from_user+0x590/0x590 [ 25.595548] ? __do_page_fault+0x5f7/0xc90 [ 25.595555] ? lock_downgrade+0x980/0x980 [ 25.595567] ? __fget_light+0x297/0x380 [ 25.595574] ? fget_raw+0x20/0x20 [ 25.595581] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.595587] ? vmacache_find+0x5f/0x280 [ 25.595599] ? up_read+0x1a/0x40 [ 25.595606] ? __do_page_fault+0x3d6/0xc90 [ 25.595612] ? lock_release+0xa40/0xa40 [ 25.595622] ? __fdget+0x18/0x20 [ 25.595632] __sys_sendmsg+0xe5/0x210 [ 25.595637] ? __sys_sendmsg+0xe5/0x210 [ 25.595645] ? SyS_shutdown+0x290/0x290 [ 25.595658] ? __do_page_fault+0xc90/0xc90 [ 25.595667] ? SyS_setsockopt+0x215/0x360 [ 25.595683] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.595693] SyS_sendmsg+0x2d/0x50 [ 25.595702] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 25.595707] RIP: 0033:0x43fdc9 [ 25.595710] RSP: 002b:00007ffddb0aa848 EFLAGS: 00000217 ORIG_RAX: 000000000000002e [ 25.595716] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdc9 [ 25.595719] RDX: 0000000000000000 RSI: 0000000020008000 RDI: 0000000000000003 [ 25.595723] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 25.595726] R10: 0000000000000004 R11: 0000000000000217 R12: 00000000004016f0 [ 25.595730] R13: 0000000000401780 R14: 0000000000000000 R15: 0000000000000000 [ 25.595743] Code: 37 ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 f9 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 48 89 f8 48 89 e5 41 54 53 48 83 ec 08 <0f> b6 14 11 48 89 f9 83 e1 07 38 ca 7f 04 84 d2 75 4b 80 38 00 [ 25.595856] RIP: strlen+0x1f/0xa0 RSP: ffff8801bbe5f768 [ 25.595864] ---[ end trace 05c364607f75beaf ]--- [ 25.595867] Kernel panic - not syncing: Fatal exception [ 25.620047] Dumping ftrace buffer: [ 25.620050] (ftrace buffer empty) [ 25.620053] Kernel Offset: disabled [ 26.020383] Rebooting in 86400 seconds..