[....] Starting enhanced syslogd: rsyslogd[ 14.028901] audit: type=1400 audit(1516879748.526:5): avc: denied { syslog } for pid=3508 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: [ 17.720009] audit: type=1400 audit(1516879752.217:6): avc: denied { map } for pid=3647 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 '10.128.15.226' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 23.986787] audit: type=1400 audit(1516879758.484:7): avc: denied { map } for pid=3661 comm="syzkaller028085" path="/root/syzkaller028085351" 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 [ 24.256437] 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 [ 24.589530] WARNING: CPU: 1 PID: 3661 at mm/slab_common.c:971 kmalloc_slab+0x5d/0x70 [ 24.597443] Kernel panic - not syncing: panic_on_warn set ... [ 24.597443] [ 24.604782] CPU: 1 PID: 3661 Comm: syzkaller028085 Not tainted 4.15.0-rc9+ #279 [ 24.612203] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.621537] Call Trace: [ 24.624115] dump_stack+0x194/0x257 [ 24.627728] ? arch_local_irq_restore+0x53/0x53 [ 24.632377] ? vsnprintf+0x1ed/0x1900 [ 24.636156] panic+0x1e4/0x41c [ 24.639323] ? refcount_error_report+0x214/0x214 [ 24.644602] ? show_regs_print_info+0x18/0x18 [ 24.649084] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.654090] ? __warn+0x1c1/0x200 [ 24.657519] ? kmalloc_slab+0x5d/0x70 [ 24.661293] __warn+0x1dc/0x200 [ 24.664548] ? kmalloc_slab+0x5d/0x70 [ 24.668330] report_bug+0x211/0x2d0 [ 24.671945] fixup_bug.part.11+0x37/0x80 [ 24.675993] do_error_trap+0x2d7/0x3e0 [ 24.679854] ? netlink_sendmsg+0xa4a/0xe60 [ 24.684061] ? sock_sendmsg+0xca/0x110 [ 24.687930] ? ___sys_sendmsg+0x767/0x8b0 [ 24.692065] ? math_error+0x400/0x400 [ 24.695841] ? check_noncircular+0x20/0x20 [ 24.700050] ? print_irqtrace_events+0x270/0x270 [ 24.704790] ? __lock_is_held+0xb6/0x140 [ 24.708829] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.713654] do_invalid_op+0x1b/0x20 [ 24.717345] invalid_op+0x22/0x40 [ 24.720774] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 24.725154] RSP: 0018:ffff8801d9a8e940 EFLAGS: 00010246 [ 24.730493] RAX: 0000000000000000 RBX: 00000007fffffff8 RCX: ffffffff83b2f03f [ 24.737748] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000007fffffff8 [ 24.744993] RBP: ffff8801d9a8e940 R08: 1ffff1003b351c9b R09: 0000000000000000 [ 24.752239] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 24.759482] R13: 0000000000000000 R14: 00000000014080c0 R15: ffff8801d578e780 [ 24.766744] ? tun_device_event+0x3bf/0xcb0 [ 24.771048] __kmalloc+0x25/0x760 [ 24.774481] ? tun_device_event+0x3d3/0xcb0 [ 24.778956] tun_device_event+0x3d3/0xcb0 [ 24.783081] ? sel_netif_destroy+0x250/0x250 [ 24.787474] ? lockdep_rtnl_is_held+0x1a/0x30 [ 24.791949] notifier_call_chain+0x136/0x2c0 [ 24.796337] ? raw_notifier_chain_unregister+0x1b0/0x1b0 [ 24.801771] ? rtnl_is_locked+0x54/0xb0 [ 24.805720] ? rtnl_kfree_skbs+0x70/0x70 [ 24.810293] raw_notifier_call_chain+0x2d/0x40 [ 24.814853] call_netdevice_notifiers_info+0x32/0x60 [ 24.819948] call_netdevice_notifiers+0xac/0x100 [ 24.824690] ? call_netdevice_notifiers_info+0x60/0x60 [ 24.829953] do_setlink+0xc10/0x3b30 [ 24.833641] ? __lock_acquire+0x664/0x3e00 [ 24.837867] ? print_irqtrace_events+0x270/0x270 [ 24.842600] ? rtnl_fdb_del+0xb20/0xb20 [ 24.846551] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 24.851717] ? print_irqtrace_events+0x270/0x270 [ 24.856453] ? print_irqtrace_events+0x270/0x270 [ 24.861183] ? print_irqtrace_events+0x270/0x270 [ 24.865913] ? lock_pin_lock+0x360/0x360 [ 24.869954] ? print_irqtrace_events+0x270/0x270 [ 24.874684] ? __lock_acquire+0x664/0x3e00 [ 24.878902] ? __put_compound_page+0xb0/0xb0 [ 24.883306] ? print_irqtrace_events+0x270/0x270 [ 24.888046] ? print_irqtrace_events+0x270/0x270 [ 24.892775] ? __lock_acquire+0x664/0x3e00 [ 24.896994] ? rtnl_is_locked+0x54/0xb0 [ 24.900942] ? validate_linkmsg+0x5f0/0x8e0 [ 24.905241] ? rtnl_calcit.isra.25+0x4f0/0x4f0 [ 24.909801] ? netdev_master_upper_dev_get+0x157/0x200 [ 24.915073] ? __dev_get_by_flags+0x180/0x180 [ 24.919559] rtnl_newlink+0xf5a/0x1ab0 [ 24.923423] ? __mutex_lock+0x16f/0x1a80 [ 24.927467] ? lock_downgrade+0x980/0x980 [ 24.931603] ? rtnl_link_unregister+0x330/0x330 [ 24.936256] ? avc_has_extended_perms+0x12c0/0x12c0 [ 24.941269] ? check_noncircular+0x20/0x20 [ 24.945521] ? __lock_is_held+0xb6/0x140 [ 24.949564] ? rtnl_link_unregister+0x330/0x330 [ 24.954211] rtnetlink_rcv_msg+0x733/0x1020 [ 24.958513] ? validate_linkmsg+0x8e0/0x8e0 [ 24.962814] ? check_noncircular+0x20/0x20 [ 24.967028] ? find_held_lock+0x35/0x1d0 [ 24.971076] ? netlink_lookup+0x5f7/0xa90 [ 24.975198] ? lock_downgrade+0x980/0x980 [ 24.979332] ? find_held_lock+0x35/0x1d0 [ 24.983372] ? rtnl_link_unregister+0x330/0x330 [ 24.988014] ? netlink_deliver_tap+0x148/0xcf0 [ 24.992569] ? lock_downgrade+0x980/0x980 [ 24.996694] ? lock_release+0xa40/0xa40 [ 25.000641] ? netlink_lookup+0x620/0xa90 [ 25.004767] ? rtnl_link_unregister+0x330/0x330 [ 25.009419] ? netlink_deliver_tap+0x171/0xcf0 [ 25.013983] netlink_rcv_skb+0x14b/0x380 [ 25.018020] ? validate_linkmsg+0x8e0/0x8e0 [ 25.022320] ? netlink_ack+0xa10/0xa10 [ 25.026195] ? netlink_skb_destructor+0x1d0/0x1d0 [ 25.031017] rtnetlink_rcv+0x1c/0x20 [ 25.034707] netlink_unicast+0x4ee/0x700 [ 25.038746] ? netlink_attachskb+0x8a0/0x8a0 [ 25.043132] ? security_netlink_send+0x81/0xb0 [ 25.047688] netlink_sendmsg+0xa4a/0xe60 [ 25.051817] ? netlink_unicast+0x700/0x700 [ 25.056029] ? security_socket_sendmsg+0x89/0xb0 [ 25.060758] ? netlink_unicast+0x700/0x700 [ 25.064981] sock_sendmsg+0xca/0x110 [ 25.068669] ___sys_sendmsg+0x767/0x8b0 [ 25.072620] ? copy_msghdr_from_user+0x590/0x590 [ 25.077374] ? __do_page_fault+0x5f7/0xc90 [ 25.081608] ? lock_downgrade+0x980/0x980 [ 25.085750] ? __fget_light+0x297/0x380 [ 25.089697] ? fget_raw+0x20/0x20 [ 25.093123] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.097678] ? vmacache_find+0x5f/0x280 [ 25.101647] ? up_read+0x1a/0x40 [ 25.104990] ? __do_page_fault+0x3d6/0xc90 [ 25.109205] ? get_unused_fd_flags+0x190/0x190 [ 25.113765] ? __fdget+0x18/0x20 [ 25.117112] __sys_sendmsg+0xe5/0x210 [ 25.120888] ? __sys_sendmsg+0xe5/0x210 [ 25.124837] ? SyS_shutdown+0x290/0x290 [ 25.128788] ? __do_page_fault+0xc90/0xc90 [ 25.133004] ? fd_install+0x4d/0x60 [ 25.136619] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.141789] SyS_sendmsg+0x2d/0x50 [ 25.145305] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 25.150032] RIP: 0033:0x445369 [ 25.153194] RSP: 002b:00007ffd2b808168 EFLAGS: 00000207 ORIG_RAX: 000000000000002e [ 25.161048] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000445369 [ 25.168302] RDX: 0000000000000000 RSI: 0000000020504000 RDI: 0000000000000004 [ 25.175559] RBP: 00007ffd2b808288 R08: 0000000000000000 R09: 0000000000000000 [ 25.182801] R10: 0000000000000000 R11: 0000000000000207 R12: 00007ffd2b808288 [ 25.190043] R13: 0000000000402830 R14: 0000000000000000 R15: 0000000000000000 [ 25.197890] Dumping ftrace buffer: [ 25.201509] (ftrace buffer empty) [ 25.205195] Kernel Offset: disabled [ 25.208811] Rebooting in 86400 seconds..