[....] Starting enhanced syslogd: rsyslogd[ 11.605334] audit: type=1400 audit(1515594817.890:5): avc: denied { syslog } for pid=3346 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: [ 18.690517] audit: type=1400 audit(1515594824.975:6): avc: denied { map } for pid=3488 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program [ 26.507048] audit: type=1400 audit(1515594832.791:7): avc: denied { map } for pid=3503 comm="syzkaller517016" path="/root/syzkaller517016890" 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 [ 26.511931] tc_ctl_action: received NO action attribs [ 26.512083] WARNING: CPU: 1 PID: 3503 at net/netlink/af_netlink.c:2398 netlink_ack+0x625/0xa10 [ 26.512086] Kernel panic - not syncing: panic_on_warn set ... [ 26.512086] [ 26.512091] CPU: 1 PID: 3503 Comm: syzkaller517016 Not tainted 4.15.0-rc6-mm1+ #52 [ 26.512094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.512097] Call Trace: [ 26.512106] dump_stack+0x194/0x257 [ 26.512114] ? arch_local_irq_restore+0x53/0x53 [ 26.512124] ? vsnprintf+0x1ed/0x1900 [ 26.512137] panic+0x1e4/0x41c [ 26.512142] ? refcount_error_report+0x214/0x214 [ 26.512150] ? show_regs_print_info+0x18/0x18 [ 26.512162] ? __warn+0x1c1/0x200 [ 26.512169] ? netlink_ack+0x625/0xa10 [ 26.512173] __warn+0x1dc/0x200 [ 26.512178] ? netlink_ack+0x625/0xa10 [ 26.512186] report_bug+0x211/0x2d0 [ 26.512197] fixup_bug.part.11+0x37/0x80 [ 26.512202] do_error_trap+0x2d7/0x3e0 [ 26.512210] ? math_error+0x400/0x400 [ 26.512219] ? __alloc_skb+0x57e/0x780 [ 26.512227] ? skb_copy_and_csum_dev+0x370/0x370 [ 26.512238] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.512247] do_invalid_op+0x1b/0x20 [ 26.512253] invalid_op+0x22/0x40 [ 26.512257] RIP: 0010:netlink_ack+0x625/0xa10 [ 26.512260] RSP: 0018:ffff8801cfdb7790 EFLAGS: 00010293 [ 26.512265] RAX: ffff8801bf8ba080 RBX: ffff8801c07ae080 RCX: ffffffff845abfb5 [ 26.512267] RDX: 0000000000000000 RSI: ffff8801c02aa370 RDI: ffff8801c07ae158 [ 26.512270] RBP: ffff8801cfdb7848 R08: ffffed0039bd65ad R09: ffffed0039bd65ad [ 26.512273] R10: 0000000000000003 R11: ffffed0039bd65ac R12: ffff8801c02aa340 [ 26.512276] R13: ffff8801cdeb2d40 R14: ffff8801bfda9c80 R15: 1ffff10039fb6ef8 [ 26.512287] ? netlink_ack+0x625/0xa10 [ 26.512303] ? netlink_sendmsg+0xe60/0xe60 [ 26.512311] ? netlink_tap_init_net+0x350/0x350 [ 26.512320] netlink_rcv_skb+0x375/0x470 [ 26.512329] ? validate_linkmsg+0x8e0/0x8e0 [ 26.512336] ? netlink_ack+0xa10/0xa10 [ 26.512344] ? netlink_skb_destructor+0x1d0/0x1d0 [ 26.512356] rtnetlink_rcv+0x1c/0x20 [ 26.512361] netlink_unicast+0x4c4/0x6b0 [ 26.512372] ? netlink_attachskb+0x8a0/0x8a0 [ 26.512386] netlink_sendmsg+0xa4a/0xe60 [ 26.512397] ? netlink_unicast+0x6b0/0x6b0 [ 26.512410] ? security_socket_sendmsg+0x89/0xb0 [ 26.512415] ? netlink_unicast+0x6b0/0x6b0 [ 26.512424] sock_sendmsg+0xca/0x110 [ 26.512431] ___sys_sendmsg+0x767/0x8b0 [ 26.512441] ? copy_msghdr_from_user+0x590/0x590 [ 26.512471] ? __fget_light+0x297/0x380 [ 26.512479] ? fget_raw+0x20/0x20 [ 26.512488] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 26.512492] ? vmacache_find+0x5f/0x280 [ 26.512506] ? up_read+0x1a/0x40 [ 26.512514] ? __do_page_fault+0x3d6/0xc90 [ 26.512520] ? lock_release+0xa40/0xa40 [ 26.512531] ? __fdget+0x18/0x20 [ 26.512540] __sys_sendmsg+0xe5/0x210 [ 26.512544] ? __sys_sendmsg+0xe5/0x210 [ 26.512551] ? SyS_shutdown+0x290/0x290 [ 26.512558] ? __do_page_fault+0xc90/0xc90 [ 26.512566] ? SyS_setsockopt+0x215/0x360 [ 26.512582] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.512592] SyS_sendmsg+0x2d/0x50 [ 26.512599] entry_SYSCALL_64_fastpath+0x23/0x9a [ 26.512603] RIP: 0033:0x440c39 [ 26.512605] RSP: 002b:00007ffc233bff48 EFLAGS: 00000217 ORIG_RAX: 000000000000002e [ 26.512609] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440c39 [ 26.512612] RDX: 0000000000008800 RSI: 00000000201dcfc8 RDI: 0000000000000003 [ 26.512614] RBP: 00000000006cb018 R08: 0000000000000000 R09: 0000000000000000 [ 26.512617] R10: 0000000000000004 R11: 0000000000000217 R12: 00000000004025a0 [ 26.512619] R13: 0000000000402630 R14: 0000000000000000 R15: 0000000000000000 [ 26.532977] Dumping ftrace buffer: [ 26.533149] (ftrace buffer empty) [ 26.533151] Kernel Offset: disabled [ 26.887640] Rebooting in 86400 seconds..