[....] Starting enhanced syslogd: rsyslogd[ 10.789713] audit: type=1400 audit(1514172022.084:5): avc: denied { syslog } for pid=2998 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: [ 15.813577] audit: type=1400 audit(1514172027.108:6): avc: denied { map } for pid=3137 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 'ci-upstream-mmots-kasan-gce-3,10.128.0.27' (ECDSA) to the list of known hosts. executing program [ 21.986797] audit: type=1400 audit(1514172033.281:7): avc: denied { map } for pid=3151 comm="syzkaller946932" path="/root/syzkaller946932213" 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 [ 21.990097] netlink: 'syzkaller946932': attribute type 46 has an invalid length. [ 21.990171] netlink: 'syzkaller946932': attribute type 46 has an invalid length. [ 21.990201] kasan: CONFIG_KASAN_INLINE enabled [ 21.990208] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.990216] general protection fault: 0000 [#1] SMP KASAN [ 21.990221] Dumping ftrace buffer: [ 21.990231] (ftrace buffer empty) [ 21.990233] Modules linked in: [ 21.990241] CPU: 1 PID: 3151 Comm: syzkaller946932 Not tainted 4.15.0-rc4-mm1+ #49 [ 21.990245] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.990259] RIP: 0010:__netlink_ns_capable+0x8b/0x120 [ 21.990262] RSP: 0018:ffff8801c928f3f8 EFLAGS: 00010206 [ 21.990268] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84444500 [ 21.990271] RDX: 000000000000007b RSI: ffffffff86510f40 RDI: 00000000000003d8 [ 21.990275] RBP: ffff8801c928f410 R08: 0000000000000000 R09: 1ffff10039251e55 [ 21.990279] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff86510f40 [ 21.990282] R13: 000000000000000c R14: 0000000000000010 R15: 0000000000000020 [ 21.990288] FS: 0000000001d1b880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 21.990291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.990295] CR2: 00005654378700d0 CR3: 00000001c95b6003 CR4: 00000000001606e0 [ 21.990301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.990304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.990306] Call Trace: [ 21.990315] netlink_ns_capable+0x26/0x30 [ 21.990323] get_target_net+0x9d/0x120 [ 21.990332] rtnl_dump_ifinfo+0x2e5/0xee0 [ 21.990349] ? rtnl_getlink+0x670/0x670 [ 21.990358] ? rcu_read_lock_sched_held+0x108/0x120 [ 21.990367] ? kmem_cache_alloc_node_trace+0x370/0x750 [ 21.990377] ? kasan_unpoison_shadow+0x35/0x50 [ 21.990418] ? wait_for_completion+0x770/0x770 [ 21.990432] netlink_dump+0x48c/0xce0 [ 21.990443] ? netlink_broadcast+0x50/0x50 [ 21.990457] __netlink_dump_start+0x4f0/0x6d0 [ 21.990469] rtnetlink_rcv_msg+0x7f0/0xb10 [ 21.990477] ? validate_linkmsg+0x8e0/0x8e0 [ 21.990483] ? rtnl_getlink+0x670/0x670 [ 21.990493] ? netlink_tap_init_net+0x350/0x350 [ 21.990503] netlink_rcv_skb+0x21e/0x460 [ 21.990509] ? validate_linkmsg+0x8e0/0x8e0 [ 21.990516] ? netlink_ack+0xa10/0xa10 [ 21.990525] ? netlink_skb_destructor+0x1d0/0x1d0 [ 21.990537] rtnetlink_rcv+0x1c/0x20 [ 21.990544] netlink_unicast+0x4be/0x6a0 [ 21.990555] ? netlink_attachskb+0x8a0/0x8a0 [ 21.990569] ? security_netlink_send+0x81/0xb0 [ 21.990578] netlink_sendmsg+0xa4a/0xe60 [ 21.990590] ? netlink_unicast+0x6a0/0x6a0 [ 21.990600] ? security_socket_sendmsg+0x89/0xb0 [ 21.990606] ? netlink_unicast+0x6a0/0x6a0 [ 21.990618] sock_sendmsg+0xca/0x110 [ 21.990626] SYSC_sendto+0x361/0x5c0 [ 21.990636] ? SYSC_connect+0x4a0/0x4a0 [ 21.990644] ? up_read+0x1a/0x40 [ 21.990652] ? __do_page_fault+0x3d6/0xc90 [ 21.990658] ? get_unused_fd_flags+0x190/0x190 [ 21.990673] ? sock_alloc_file+0x2a6/0x560 [ 21.990684] ? __alloc_fd+0x750/0x750 [ 21.990691] ? __do_page_fault+0xc90/0xc90 [ 21.990700] ? fd_install+0x4d/0x60 [ 21.990708] ? sock_map_fd+0x53/0x70 [ 21.990716] ? SyS_socket+0x12d/0x1d0 [ 21.990722] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 21.990734] SyS_sendto+0x40/0x50 [ 21.990744] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 21.990748] RIP: 0033:0x43fdd9 [ 21.990751] RSP: 002b:00007fffc619d938 EFLAGS: 00000203 ORIG_RAX: 000000000000002c [ 21.990757] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdd9 [ 21.990761] RDX: 0000000000000055 RSI: 000000002000ffab RDI: 0000000000000005 [ 21.990764] RBP: 00000000006ca018 R08: 0000000020000000 R09: 0000000000000000 [ 21.990768] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401740 [ 21.990771] R13: 00000000004017d0 R14: 0000000000000000 R15: 0000000000000000 [ 21.990785] Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 95 00 00 00 48 8b 5b 18 48 b8 00 00 00 00 00 fc ff df 48 8d bb d8 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 80 00 00 00 48 8b 9b d8 03 00 00 48 b8 00 00 [ 21.990896] RIP: __netlink_ns_capable+0x8b/0x120 RSP: ffff8801c928f3f8 [ 21.990905] ---[ end trace 65d8fae45ac4ce35 ]--- [ 21.990909] Kernel panic - not syncing: Fatal exception [ 22.013297] Dumping ftrace buffer: [ 22.013300] (ftrace buffer empty) [ 22.013303] Kernel Offset: disabled [ 22.429615] Rebooting in 86400 seconds..