[....] Starting enhanced syslogd: rsyslogd[ 13.051951] audit: type=1400 audit(1516629779.248:5): avc: denied { syslog } for pid=3503 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: [ 17.546245] audit: type=1400 audit(1516629783.743:6): avc: denied { map } for pid=3643 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 '10.128.0.9' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 43.591819] audit: type=1400 audit(1516629809.788:7): avc: denied { map } for pid=3661 comm="syzkaller881172" path="/root/syzkaller881172713" 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 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 43.855422] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 44.217536] ------------[ cut here ]------------ [ 44.223053] Driver BUG [ 44.223170] WARNING: CPU: 1 PID: 3661 at net/core/xdp.c:22 xdp_rxq_info_unreg+0xc1/0xf0 [ 44.233753] Kernel panic - not syncing: panic_on_warn set ... [ 44.233753] [ 44.241097] CPU: 1 PID: 3661 Comm: syzkaller881172 Not tainted 4.15.0-rc8+ #202 [ 44.248515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.257856] Call Trace: [ 44.260425] dump_stack+0x194/0x257 [ 44.264028] ? arch_local_irq_restore+0x53/0x53 [ 44.268675] ? vsnprintf+0x1ed/0x1900 [ 44.272456] panic+0x1e4/0x41c [ 44.275625] ? refcount_error_report+0x214/0x214 [ 44.280355] ? show_regs_print_info+0x18/0x18 [ 44.284842] ? __warn+0x1c1/0x200 [ 44.288278] ? xdp_rxq_info_unreg+0xc1/0xf0 [ 44.292577] __warn+0x1dc/0x200 [ 44.295836] ? console_unlock+0x983/0xd80 [ 44.299963] ? xdp_rxq_info_unreg+0xc1/0xf0 [ 44.304263] report_bug+0x211/0x2d0 [ 44.307872] fixup_bug.part.11+0x37/0x80 [ 44.311919] do_error_trap+0x2d7/0x3e0 [ 44.315785] ? __down_trylock_console_sem+0x10d/0x1e0 [ 44.320952] ? math_error+0x400/0x400 [ 44.324726] ? vprintk_emit+0x3ea/0x590 [ 44.328692] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.333512] do_invalid_op+0x1b/0x20 [ 44.337200] invalid_op+0x22/0x40 [ 44.340637] RIP: 0010:xdp_rxq_info_unreg+0xc1/0xf0 [ 44.345538] RSP: 0018:ffff8801bc62ee78 EFLAGS: 00010282 [ 44.350875] RAX: dffffc0000000008 RBX: ffff8801d950b1c0 RCX: ffffffff8159f28e [ 44.358118] RDX: 0000000000000000 RSI: 1ffff100378c5d8a RDI: 0000000000000293 [ 44.365360] RBP: ffff8801bc62ee90 R08: 1ffff100378c5d4c R09: 0000000000000000 [ 44.372604] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d950b1cc [ 44.379848] R13: 0000000000000002 R14: 00000000000003e8 R15: 0000000000000000 [ 44.387107] ? vprintk_func+0x5e/0xc0 [ 44.390890] ? xdp_rxq_info_unreg+0xc1/0xf0 [ 44.395190] tun_cleanup_tx_ring.part.47+0x236/0x450 [ 44.400263] ? tun_queue_purge+0x20b/0x410 [ 44.404483] tun_detach_all+0x4fd/0xbf0 [ 44.408437] ? tun_chr_close+0x60/0x60 [ 44.412300] ? lock_downgrade+0x980/0x980 [ 44.416447] ? mark_held_locks+0xaf/0x100 [ 44.420574] ? __local_bh_enable_ip+0x121/0x230 [ 44.425228] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 44.430219] ? dev_mc_flush+0x32/0x40 [ 44.433992] ? trace_hardirqs_on+0xd/0x10 [ 44.438110] ? __local_bh_enable_ip+0x121/0x230 [ 44.442757] tun_net_uninit+0x15/0x20 [ 44.446571] rollback_registered_many+0x9a8/0xe20 [ 44.451392] ? tun_detach_all+0xbf0/0xbf0 [ 44.455513] ? dev_xdp_uninstall+0x310/0x310 [ 44.459897] ? print_irqtrace_events+0x270/0x270 [ 44.464632] ? print_irqtrace_events+0x270/0x270 [ 44.469356] ? __lock_acquire+0x664/0x3e00 [ 44.473581] ? check_noncircular+0x20/0x20 [ 44.477792] ? print_irqtrace_events+0x270/0x270 [ 44.482528] ? lock_acquire+0x1d5/0x580 [ 44.486474] ? lock_acquire+0x1d5/0x580 [ 44.490423] ? rtnetlink_rcv_msg+0x508/0xb10 [ 44.494813] unregister_netdevice_many.part.118+0x87/0x420 [ 44.500414] ? unregister_netdev+0x30/0x30 [ 44.504622] ? unregister_netdevice_queue+0x290/0x5f0 [ 44.509786] ? rollback_registered+0x3c0/0x3c0 [ 44.514345] ? __mutex_lock+0x16f/0x1a80 [ 44.518377] ? rtnetlink_rcv_msg+0x508/0xb10 [ 44.522764] unregister_netdevice_many+0xbb/0x100 [ 44.527592] ? unregister_netdevice_many.part.118+0x420/0x420 [ 44.533452] ? validate_nla+0x209/0x6e0 [ 44.537405] ? rollback_registered+0x3c0/0x3c0 [ 44.541974] rtnl_delete_link+0x10f/0x170 [ 44.546107] ? rtnl_link_ops_get+0xb0/0xb0 [ 44.550327] ? full_name_hash+0x9b/0xe0 [ 44.554280] ? __dev_get_by_name+0xfe/0x150 [ 44.558577] rtnl_dellink+0x2d5/0x7e0 [ 44.562352] ? check_noncircular+0x20/0x20 [ 44.566566] ? rtnl_get_link+0x2b0/0x2b0 [ 44.570606] ? check_noncircular+0x20/0x20 [ 44.574855] ? ns_capable_common+0xcf/0x160 [ 44.579164] rtnetlink_rcv_msg+0x57f/0xb10 [ 44.583376] ? rtnl_get_link+0x2b0/0x2b0 [ 44.587409] ? validate_linkmsg+0x8e0/0x8e0 [ 44.591710] ? __might_fault+0x110/0x1d0 [ 44.595751] netlink_rcv_skb+0x14b/0x380 [ 44.599789] ? validate_linkmsg+0x8e0/0x8e0 [ 44.604086] ? netlink_ack+0xa10/0xa10 [ 44.607949] ? netlink_skb_destructor+0x1d0/0x1d0 [ 44.612775] rtnetlink_rcv+0x1c/0x20 [ 44.616467] netlink_unicast+0x4c4/0x6b0 [ 44.620506] ? netlink_attachskb+0x8a0/0x8a0 [ 44.624899] ? security_netlink_send+0x81/0xb0 [ 44.629463] netlink_sendmsg+0xa4a/0xe60 [ 44.633507] ? netlink_unicast+0x6b0/0x6b0 [ 44.637719] ? security_socket_sendmsg+0x89/0xb0 [ 44.642448] ? netlink_unicast+0x6b0/0x6b0 [ 44.646660] sock_sendmsg+0xca/0x110 [ 44.650349] ___sys_sendmsg+0x767/0x8b0 [ 44.654300] ? copy_msghdr_from_user+0x590/0x590 [ 44.659039] ? __do_page_fault+0x5f7/0xc90 [ 44.663247] ? lock_downgrade+0x980/0x980 [ 44.667375] ? __fget_light+0x297/0x380 [ 44.671321] ? fget_raw+0x20/0x20 [ 44.674754] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 44.679306] ? vmacache_find+0x5f/0x280 [ 44.683251] ? vmacache_update+0xfe/0x130 [ 44.687375] ? up_read+0x1a/0x40 [ 44.690716] ? __do_page_fault+0x3d6/0xc90 [ 44.694923] ? get_unused_fd_flags+0x190/0x190 [ 44.699482] ? __fdget+0x18/0x20 [ 44.702831] __sys_sendmsg+0xe5/0x210 [ 44.706605] ? __sys_sendmsg+0xe5/0x210 [ 44.710559] ? SyS_shutdown+0x290/0x290 [ 44.714511] ? __do_page_fault+0xc90/0xc90 [ 44.718738] ? fd_install+0x4d/0x60 [ 44.722350] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 44.727360] SyS_sendmsg+0x2d/0x50 [ 44.730901] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 44.735646] RIP: 0033:0x445189 [ 44.738812] RSP: 002b:00007fff8d14a8c8 EFLAGS: 00000207 ORIG_RAX: 000000000000002e [ 44.746506] RAX: ffffffffffffffda RBX: 00000000004a6a32 RCX: 0000000000445189 [ 44.753749] RDX: 0000000020000040 RSI: 000000002001bfc8 RDI: 0000000000000004 [ 44.761007] RBP: 00007fff8d14a9d8 R08: 0000000000000000 R09: 0000000000000000 [ 44.768252] R10: 0000000000000000 R11: 0000000000000207 R12: 00007fff8d14a9d8 [ 44.775494] R13: 0000000000402650 R14: 0000000000000000 R15: 0000000000000000 [ 44.783431] Dumping ftrace buffer: [ 44.787060] (ftrace buffer empty) [ 44.790758] Kernel Offset: disabled [ 44.794366] Rebooting in 86400 seconds..