[....] Starting enhanced syslogd: rsyslogd[ 10.987094] audit: type=1400 audit(1513771112.841:5): avc: denied { syslog } for pid=2992 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: [ 13.181286] audit: type=1400 audit(1513771115.035:6): avc: denied { map } for pid=3130 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-kasan-gce-386-2,10.128.0.62' (ECDSA) to the list of known hosts. executing program executing program [ 19.344943] audit: type=1400 audit(1513771121.199:7): avc: denied { map } for pid=3144 comm="syzkaller571099" path="/root/syzkaller571099545" 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 [ 19.348051] netlink: 3 bytes leftover after parsing attributes in process `syzkaller571099'. [ 19.348123] netlink: 3 bytes leftover after parsing attributes in process `syzkaller571099'. [ 19.349474] netlink: 3 bytes leftover after parsing attributes in process `syzkaller571099'. [ 19.349617] netlink: 3 bytes leftover after parsing attributes in process `syzkaller571099'. [ 19.349636] kasan: CONFIG_KASAN_INLINE enabled [ 19.349643] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 19.349650] general protection fault: 0000 [#1] SMP KASAN [ 19.349655] Dumping ftrace buffer: [ 19.349659] (ftrace buffer empty) [ 19.349661] Modules linked in: [ 19.349669] CPU: 0 PID: 3144 Comm: syzkaller571099 Not tainted 4.15.0-rc4+ #139 [ 19.349673] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.349685] RIP: 0010:__netlink_ns_capable+0x8b/0x120 [ 19.349688] RSP: 0018:ffff8801c8d9ef10 EFLAGS: 00010206 [ 19.349694] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84344470 [ 19.349698] RDX: 000000000000007b RSI: ffffffff85f10980 RDI: 00000000000003d8 [ 19.349701] RBP: ffff8801c8d9ef28 R08: 0000000000000000 R09: 1ffff100391b3dc8 [ 19.349704] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff85f10980 [ 19.349707] R13: 000000000000000c R14: 0000000000000004 R15: 0000000000000011 [ 19.349713] FS: 0000000000000000(0000) GS:ffff8801db400000(0063) knlGS:0000000008d30840 [ 19.349717] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 19.349720] CR2: 0000000020151000 CR3: 00000001cb9ff005 CR4: 00000000001606f0 [ 19.349728] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.349731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.349733] Call Trace: [ 19.349741] netlink_ns_capable+0x26/0x30 [ 19.349750] get_target_net+0x9d/0x120 [ 19.349758] rtnl_dump_ifinfo+0x2da/0xec0 [ 19.349775] ? rtnl_getlink+0x650/0x650 [ 19.349784] ? rcu_read_lock_sched_held+0x108/0x120 [ 19.349793] ? kmem_cache_alloc_node_trace+0x370/0x750 [ 19.349802] ? kasan_unpoison_shadow+0x35/0x50 [ 19.349809] ? kasan_kmalloc+0xad/0xe0 [ 19.349819] ? __kmalloc_node_track_caller+0x47/0x70 [ 19.349854] ? find_held_lock+0x35/0x1d0 [ 19.349866] netlink_dump+0x48c/0xce0 [ 19.349876] ? netlink_broadcast+0x50/0x50 [ 19.349891] __netlink_dump_start+0x4f0/0x6d0 [ 19.349900] ? rtnl_getlink+0x650/0x650 [ 19.349907] rtnetlink_rcv_msg+0x977/0x1020 [ 19.349918] ? validate_linkmsg+0x8e0/0x8e0 [ 19.349927] ? check_noncircular+0x20/0x20 [ 19.349936] ? find_held_lock+0x35/0x1d0 [ 19.349946] ? rtnl_getlink+0x650/0x650 [ 19.349952] ? netlink_lookup+0x5f7/0xa90 [ 19.349959] ? lock_downgrade+0x980/0x980 [ 19.349968] ? find_held_lock+0x35/0x1d0 [ 19.349980] ? netlink_deliver_tap+0x148/0xcf0 [ 19.349987] ? lock_downgrade+0x980/0x980 [ 19.349996] ? lock_release+0xa40/0xa40 [ 19.350005] ? netlink_lookup+0x620/0xa90 [ 19.350021] ? rtnl_getlink+0x650/0x650 [ 19.350034] ? sock_has_perm+0x29c/0x400 [ 19.350042] netlink_rcv_skb+0x216/0x440 [ 19.350049] ? validate_linkmsg+0x8e0/0x8e0 [ 19.350057] ? netlink_ack+0xa10/0xa10 [ 19.350066] ? netlink_skb_destructor+0x1d0/0x1d0 [ 19.350075] ? selinux_nlmsg_lookup+0x32b/0x430 [ 19.350084] rtnetlink_rcv+0x1c/0x20 [ 19.350090] netlink_unicast+0x4e8/0x6f0 [ 19.350101] ? netlink_attachskb+0x8a0/0x8a0 [ 19.350111] ? security_netlink_send+0x81/0xb0 [ 19.350120] netlink_sendmsg+0xa4a/0xe60 [ 19.350132] ? netlink_unicast+0x6f0/0x6f0 [ 19.350142] ? security_socket_sendmsg+0x89/0xb0 [ 19.350149] ? netlink_unicast+0x6f0/0x6f0 [ 19.350158] sock_sendmsg+0xca/0x110 [ 19.350167] sock_write_iter+0x31a/0x5d0 [ 19.350176] ? sock_sendmsg+0x110/0x110 [ 19.350190] ? iov_iter_init+0xaf/0x1d0 [ 19.350205] __vfs_write+0x684/0x970 [ 19.350214] ? kernel_read+0x120/0x120 [ 19.350218] ? bpf_fd_pass+0x280/0x280 [ 19.350229] ? _cond_resched+0x14/0x30 [ 19.350239] ? selinux_file_permission+0x82/0x460 [ 19.350255] ? rw_verify_area+0xe5/0x2b0 [ 19.350261] ? __fdget_raw+0x20/0x20 [ 19.350269] vfs_write+0x189/0x510 [ 19.350279] SyS_write+0xef/0x220 [ 19.350286] ? __do_page_fault+0x3d6/0xc90 [ 19.350294] ? SyS_read+0x220/0x220 [ 19.350304] ? do_fast_syscall_32+0x156/0xf9d [ 19.350312] ? SyS_read+0x220/0x220 [ 19.350320] do_fast_syscall_32+0x3ee/0xf9d [ 19.350332] ? do_int80_syscall_32+0x9d0/0x9d0 [ 19.350338] ? kasan_check_read+0x11/0x20 [ 19.350346] ? syscall_return_slowpath+0x550/0x550 [ 19.350356] ? SyS_rt_sigaction+0x94/0x1b0 [ 19.350363] ? SyS_sigprocmask+0x4b0/0x4b0 [ 19.350368] ? SyS_read+0x184/0x220 [ 19.350374] ? retint_user+0x18/0x18 [ 19.350385] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 19.350397] entry_SYSENTER_compat+0x54/0x63 [ 19.350402] RIP: 0023:0xf7f30c79 [ 19.350405] RSP: 002b:00000000ffc501cc EFLAGS: 00000203 ORIG_RAX: 0000000000000004 [ 19.350411] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020151000 [ 19.350414] RDX: 000000000000001f RSI: 0000000000000167 RDI: 0000000000000010 [ 19.350417] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 [ 19.350420] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.350424] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.350438] 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 [ 19.350551] RIP: __netlink_ns_capable+0x8b/0x120 RSP: ffff8801c8d9ef10 [ 19.350577] ---[ end trace c42ccf7e6c664428 ]--- [ 19.350581] Kernel panic - not syncing: Fatal exception [ 19.371228] Dumping ftrace buffer: [ 19.371231] (ftrace buffer empty) [ 19.371233] Kernel Offset: disabled [ 19.910280] Rebooting in 86400 seconds..