[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 18.951825] audit: type=1400 audit(1517936443.313:6): avc: denied { map } for pid=4155 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 34.426499] audit: type=1400 audit(1517936458.788:7): avc: denied { map } for pid=4171 comm="syzkaller580740" path="/root/syzkaller580740725" 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 [ 34.691559] 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 [ 35.018336] WARNING: CPU: 0 PID: 4171 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70 [ 35.026331] Kernel panic - not syncing: panic_on_warn set ... [ 35.026331] [ 35.033669] CPU: 0 PID: 4171 Comm: syzkaller580740 Not tainted 4.15.0+ #299 [ 35.040740] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.050074] Call Trace: [ 35.052644] dump_stack+0x194/0x257 [ 35.056252] ? arch_local_irq_restore+0x53/0x53 [ 35.060901] ? vsnprintf+0x1ed/0x1900 [ 35.064691] panic+0x1e4/0x41c [ 35.067858] ? refcount_error_report+0x214/0x214 [ 35.072588] ? show_regs_print_info+0x18/0x18 [ 35.077058] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.082052] ? __warn+0x1c1/0x200 [ 35.085484] ? kmalloc_slab+0x5d/0x70 [ 35.089258] __warn+0x1dc/0x200 [ 35.092511] ? kmalloc_slab+0x5d/0x70 [ 35.096287] report_bug+0x211/0x2d0 [ 35.099894] fixup_bug.part.11+0x37/0x80 [ 35.103928] do_error_trap+0x2d7/0x3e0 [ 35.107787] ? netlink_sendmsg+0xa4a/0xe60 [ 35.111996] ? sock_sendmsg+0xca/0x110 [ 35.115853] ? ___sys_sendmsg+0x767/0x8b0 [ 35.119975] ? math_error+0x400/0x400 [ 35.123747] ? find_held_lock+0x35/0x1d0 [ 35.127783] ? print_irqtrace_events+0x270/0x270 [ 35.132513] ? check_noncircular+0x20/0x20 [ 35.136721] ? __lock_is_held+0xb6/0x140 [ 35.140759] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.145580] do_invalid_op+0x1b/0x20 [ 35.149267] invalid_op+0x22/0x40 [ 35.152694] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 35.157071] RSP: 0018:ffff8801b0d8e9d0 EFLAGS: 00010246 [ 35.162408] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83b8feed [ 35.169654] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000400000008 [ 35.176897] RBP: ffff8801b0d8e9d0 R08: 1ffff100361b1cad R09: 0000000000000000 [ 35.184139] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000400000008 [ 35.191395] R13: dffffc0000000000 R14: 00000000014080c0 R15: ffff8801d802ab00 [ 35.198651] ? tun_device_event+0x45d/0xec0 [ 35.202951] __kmalloc+0x25/0x760 [ 35.206383] ? tun_device_event+0x471/0xec0 [ 35.210682] tun_device_event+0x471/0xec0 [ 35.214803] ? dev_map_notification+0x9a/0x600 [ 35.219367] ? inetdev_init+0x530/0x530 [ 35.223319] ? bond_open+0xe20/0xe20 [ 35.227007] ? sel_netif_netdev_notifier_handler+0x86/0x420 [ 35.232690] ? igmp_netdev_event+0x87/0x760 [ 35.236986] ? tun_net_xmit+0x19e0/0x19e0 [ 35.241119] ? lockdep_rtnl_is_held+0x1a/0x30 [ 35.245588] ? fib_netdev_event+0xf0/0x300 [ 35.249803] notifier_call_chain+0x136/0x2c0 [ 35.254188] ? raw_notifier_chain_unregister+0x1b0/0x1b0 [ 35.259622] ? rtnl_is_locked+0x54/0xb0 [ 35.263572] ? rtnl_kfree_skbs+0x70/0x70 [ 35.267612] raw_notifier_call_chain+0x2d/0x40 [ 35.272171] call_netdevice_notifiers_info+0x32/0x70 [ 35.277248] dev_change_tx_queue_len+0x117/0x220 [ 35.281973] ? __lock_acquire+0x664/0x3e00 [ 35.286178] ? dev_change_flags+0x140/0x140 [ 35.290476] ? print_irqtrace_events+0x270/0x270 [ 35.295210] do_setlink+0xba7/0x3bb0 [ 35.298902] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 35.304065] ? __lock_acquire+0x664/0x3e00 [ 35.308280] ? rtnl_fdb_del+0xb20/0xb20 [ 35.312233] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 35.317395] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 35.322571] ? print_irqtrace_events+0x270/0x270 [ 35.327302] ? print_irqtrace_events+0x270/0x270 [ 35.332033] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.337025] ? check_noncircular+0x20/0x20 [ 35.341243] ? print_irqtrace_events+0x270/0x270 [ 35.345976] ? print_irqtrace_events+0x270/0x270 [ 35.350702] ? __lock_acquire+0x664/0x3e00 [ 35.354910] ? check_noncircular+0x20/0x20 [ 35.359121] ? rtnl_is_locked+0x54/0xb0 [ 35.363069] ? validate_linkmsg+0x5f0/0x8e0 [ 35.367367] ? rtnl_calcit.isra.25+0x4f0/0x4f0 [ 35.371925] ? netdev_master_upper_dev_get+0x15b/0x220 [ 35.377177] ? __dev_get_by_flags+0x1a0/0x1a0 [ 35.381653] rtnl_newlink+0xf1c/0x1a20 [ 35.385517] ? __mutex_lock+0x16f/0x1a80 [ 35.389562] ? rtnl_link_unregister+0x330/0x330 [ 35.394203] ? avc_has_perm_noaudit+0x37e/0x520 [ 35.398849] ? avc_has_extended_perms+0x12c0/0x12c0 [ 35.403838] ? rcutorture_record_progress+0x10/0x10 [ 35.408877] ? rtnl_get_link+0x124/0x2b0 [ 35.412911] ? rtnl_dump_all+0x460/0x460 [ 35.416946] ? ns_capable_common+0xcf/0x160 [ 35.421258] rtnetlink_rcv_msg+0x57f/0xb10 [ 35.425476] ? rtnl_link_unregister+0x330/0x330 [ 35.430123] ? validate_linkmsg+0x8e0/0x8e0 [ 35.434426] ? __might_fault+0x110/0x1d0 [ 35.438467] netlink_rcv_skb+0x14b/0x380 [ 35.442512] ? validate_linkmsg+0x8e0/0x8e0 [ 35.446808] ? netlink_ack+0xa10/0xa10 [ 35.450672] ? netlink_skb_destructor+0x1d0/0x1d0 [ 35.455494] rtnetlink_rcv+0x1c/0x20 [ 35.459182] netlink_unicast+0x4c4/0x6b0 [ 35.463221] ? netlink_attachskb+0x8a0/0x8a0 [ 35.467610] ? security_netlink_send+0x81/0xb0 [ 35.472166] netlink_sendmsg+0xa4a/0xe60 [ 35.476209] ? netlink_unicast+0x6b0/0x6b0 [ 35.480423] ? security_socket_sendmsg+0x89/0xb0 [ 35.485152] ? netlink_unicast+0x6b0/0x6b0 [ 35.489361] sock_sendmsg+0xca/0x110 [ 35.493052] ___sys_sendmsg+0x767/0x8b0 [ 35.497001] ? SyS_membarrier+0x600/0x600 [ 35.501128] ? copy_msghdr_from_user+0x590/0x590 [ 35.505857] ? __handle_mm_fault+0x80e/0x3ce0 [ 35.510342] ? check_noncircular+0x20/0x20 [ 35.514552] ? lock_downgrade+0x980/0x980 [ 35.518673] ? check_noncircular+0x20/0x20 [ 35.522880] ? find_held_lock+0x35/0x1d0 [ 35.526917] ? __fget_light+0x2b2/0x3c0 [ 35.530866] ? fget_raw+0x20/0x20 [ 35.534309] ? __do_page_fault+0x5f7/0xc90 [ 35.538519] ? lock_downgrade+0x980/0x980 [ 35.542648] __sys_sendmsg+0xe5/0x210 [ 35.546423] ? __sys_sendmsg+0xe5/0x210 [ 35.550375] ? SyS_shutdown+0x290/0x290 [ 35.554331] ? __do_page_fault+0x3d6/0xc90 [ 35.558555] ? move_addr_to_kernel+0x60/0x60 [ 35.562945] SyS_sendmsg+0x2d/0x50 [ 35.566470] ? __sys_sendmsg+0x210/0x210 [ 35.570505] do_syscall_64+0x282/0x940 [ 35.574363] ? __do_page_fault+0xc90/0xc90 [ 35.578569] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.583303] ? syscall_return_slowpath+0x550/0x550 [ 35.588207] ? syscall_return_slowpath+0x2ac/0x550 [ 35.593111] ? prepare_exit_to_usermode+0x350/0x350 [ 35.598103] ? retint_user+0x18/0x18 [ 35.601794] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.606625] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 35.611784] RIP: 0033:0x445099 [ 35.614948] RSP: 002b:00007fffef309748 EFLAGS: 00000207 ORIG_RAX: 000000000000002e [ 35.622626] RAX: ffffffffffffffda RBX: 00000000004a6952 RCX: 0000000000445099 [ 35.629869] RDX: 0000000000000000 RSI: 0000000020504000 RDI: 0000000000000004 [ 35.637112] RBP: 00007fffef309858 R08: 0000000000000000 R09: 0000000000000000 [ 35.644353] R10: 0000000000000000 R11: 0000000000000207 R12: 00007fffef309858 [ 35.651594] R13: 0000000000402560 R14: 0000000000000000 R15: 0000000000000000 [ 35.659732] Dumping ftrace buffer: [ 35.663358] (ftrace buffer empty) [ 35.667042] Kernel Offset: disabled [ 35.670647] Rebooting in 86400 seconds..