[?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. [ 18.630324] audit: type=1400 audit(1521056867.649:6): avc: denied { map } for pid=4234 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 '10.128.0.50' (ECDSA) to the list of known hosts. syzkaller login: [ 44.840891] audit: type=1400 audit(1521056893.860:7): avc: denied { map } for pid=4252 comm="syzkaller336270" path="/root/syzkaller336270983" 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 [ 44.848802] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 44.866905] audit: type=1400 audit(1521056893.860:8): avc: denied { sys_admin } for pid=4252 comm="syzkaller336270" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 44.915171] audit: type=1400 audit(1521056893.934:9): avc: denied { net_admin } for pid=4253 comm="syzkaller336270" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 45.139880] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 45.485760] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 45.491860] 8021q: adding VLAN 0 to HW filter on device bond0 executing program [ 45.529136] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 45.565975] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 45.578518] audit: type=1400 audit(1521056894.598:10): avc: denied { sys_chroot } for pid=4253 comm="syzkaller336270" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 45.581247] ================================================================== [ 45.610499] BUG: KASAN: slab-out-of-bounds in ip6_xmit+0x1f76/0x2260 [ 45.616971] Read of size 8 at addr ffff8801ab58c918 by task syzkaller336270/4253 [ 45.624474] [ 45.626078] CPU: 0 PID: 4253 Comm: syzkaller336270 Not tainted 4.16.0-rc4+ #265 [ 45.633494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.642817] Call Trace: [ 45.645380] dump_stack+0x194/0x24d [ 45.648982] ? arch_local_irq_restore+0x53/0x53 [ 45.653622] ? show_regs_print_info+0x18/0x18 [ 45.658095] ? ip6_xmit+0x1f76/0x2260 [ 45.661873] print_address_description+0x73/0x250 [ 45.666689] ? ip6_xmit+0x1f76/0x2260 [ 45.670461] kasan_report+0x23c/0x360 [ 45.674235] __asan_report_load8_noabort+0x14/0x20 [ 45.679134] ip6_xmit+0x1f76/0x2260 [ 45.682746] ? ip6_finish_output2+0x23d0/0x23d0 [ 45.687387] ? fl6_update_dst+0x127/0x2b0 [ 45.691510] ? inet6_csk_route_socket+0x691/0xe80 [ 45.696325] ? trace_hardirqs_off+0x10/0x10 [ 45.700620] ? lock_acquire+0x1d5/0x580 [ 45.704564] ? lock_acquire+0x1d5/0x580 [ 45.708508] ? inet6_csk_xmit+0x114/0x580 [ 45.712627] ? trace_hardirqs_off+0x10/0x10 [ 45.716922] ? lock_release+0xa40/0xa40 [ 45.720885] inet6_csk_xmit+0x2fc/0x580 [ 45.724832] ? inet6_csk_update_pmtu+0x160/0x160 [ 45.729563] ? __sk_dst_check+0x1a5/0x380 [ 45.733684] ? sock_kzfree_s+0x60/0x60 [ 45.737557] l2tp_xmit_skb+0x105f/0x1410 [ 45.741598] ? l2tp_session_create+0xb80/0xb80 [ 45.746153] ? sock_wmalloc+0x15d/0x1d0 [ 45.750101] ? iov_iter_advance+0x13f0/0x13f0 [ 45.754572] ? pppol2tp_sendmsg+0x41b/0x670 [ 45.758868] pppol2tp_sendmsg+0x470/0x670 [ 45.762989] ? selinux_socket_sendmsg+0x36/0x40 [ 45.767630] ? pppol2tp_getsockopt+0x900/0x900 [ 45.772184] sock_sendmsg+0xca/0x110 [ 45.775870] SYSC_sendto+0x361/0x5c0 [ 45.779557] ? SYSC_connect+0x4a0/0x4a0 [ 45.783513] ? inet_dgram_connect+0x172/0x1f0 [ 45.787985] ? SYSC_connect+0x2e0/0x4a0 [ 45.791959] ? mm_fault_error+0x2c0/0x2c0 [ 45.796090] ? move_addr_to_kernel+0x60/0x60 [ 45.800473] SyS_sendto+0x40/0x50 [ 45.803907] ? SyS_getpeername+0x30/0x30 [ 45.807940] do_syscall_64+0x281/0x940 [ 45.811798] ? __do_page_fault+0xc90/0xc90 [ 45.816003] ? _raw_spin_unlock_irq+0x27/0x70 [ 45.820470] ? finish_task_switch+0x1c1/0x7e0 [ 45.824941] ? syscall_return_slowpath+0x550/0x550 [ 45.829859] ? syscall_return_slowpath+0x2ac/0x550 [ 45.834761] ? prepare_exit_to_usermode+0x350/0x350 [ 45.839750] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 45.845089] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.849909] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.855068] RIP: 0033:0x4429f9 [ 45.858228] RSP: 002b:00000000007dfe88 EFLAGS: 00000212 ORIG_RAX: 000000000000002c [ 45.865918] RAX: ffffffffffffffda RBX: 000000000000001a RCX: 00000000004429f9 [ 45.873169] RDX: 0000000000000000 RSI: 0000000020001180 RDI: 0000000000000004 [ 45.880441] RBP: 00000000004a4899 R08: 00000000200021c0 R09: 0000000000000080 [ 45.887683] R10: 0000000000040001 R11: 0000000000000212 R12: 00000000007dff70 [ 45.894925] R13: 0000000000403a30 R14: 0000000000000000 R15: 0000000000000000 [ 45.902182] [ 45.903781] Allocated by task 0: [ 45.907114] (stack is not available) [ 45.910797] [ 45.912393] Freed by task 0: [ 45.915377] (stack is not available) [ 45.919061] [ 45.920663] The buggy address belongs to the object at ffff8801ab58c900 [ 45.920663] which belongs to the cache ip_dst_cache of size 160 [ 45.933374] The buggy address is located 24 bytes inside of [ 45.933374] 160-byte region [ffff8801ab58c900, ffff8801ab58c9a0) [ 45.945129] The buggy address belongs to the page: [ 45.950027] page:ffffea0006ad6300 count:1 mapcount:0 mapping:ffff8801ab58c000 index:0xffff8801ab58c000 [ 45.959440] flags: 0x2fffc0000000100(slab) [ 45.963646] raw: 02fffc0000000100 ffff8801ab58c000 ffff8801ab58c000 000000010000000b [ 45.971498] raw: ffffea0007387ba0 ffff8801d5b5e738 ffff8801d5b604c0 0000000000000000 [ 45.979359] page dumped because: kasan: bad access detected [ 45.985037] [ 45.986638] Memory state around the buggy address: [ 45.991535] ffff8801ab58c800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 45.998863] ffff8801ab58c880: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc [ 46.006204] >ffff8801ab58c900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 46.013531] ^ [ 46.017647] ffff8801ab58c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 46.024975] ffff8801ab58ca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 46.032302] ================================================================== [ 46.039628] Disabling lock debugging due to kernel taint [ 46.045089] Kernel panic - not syncing: panic_on_warn set ... [ 46.045089] [ 46.052425] CPU: 0 PID: 4253 Comm: syzkaller336270 Tainted: G B 4.16.0-rc4+ #265 [ 46.061144] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.070465] Call Trace: [ 46.073026] dump_stack+0x194/0x24d [ 46.076623] ? arch_local_irq_restore+0x53/0x53 [ 46.081262] ? kasan_end_report+0x32/0x50 [ 46.085381] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 46.090109] ? vsnprintf+0x1ed/0x1900 [ 46.093882] ? ip6_xmit+0x1f40/0x2260 [ 46.097667] panic+0x1e4/0x41c [ 46.100834] ? refcount_error_report+0x214/0x214 [ 46.105559] ? add_taint+0x1c/0x50 [ 46.109070] ? add_taint+0x1c/0x50 [ 46.112583] ? ip6_xmit+0x1f76/0x2260 [ 46.116354] kasan_end_report+0x50/0x50 [ 46.120298] kasan_report+0x149/0x360 [ 46.124068] __asan_report_load8_noabort+0x14/0x20 [ 46.128966] ip6_xmit+0x1f76/0x2260 [ 46.132568] ? ip6_finish_output2+0x23d0/0x23d0 [ 46.137205] ? fl6_update_dst+0x127/0x2b0 [ 46.141322] ? inet6_csk_route_socket+0x691/0xe80 [ 46.146134] ? trace_hardirqs_off+0x10/0x10 [ 46.150425] ? lock_acquire+0x1d5/0x580 [ 46.154367] ? lock_acquire+0x1d5/0x580 [ 46.158308] ? inet6_csk_xmit+0x114/0x580 [ 46.162428] ? trace_hardirqs_off+0x10/0x10 [ 46.166719] ? lock_release+0xa40/0xa40 [ 46.170672] inet6_csk_xmit+0x2fc/0x580 [ 46.174619] ? inet6_csk_update_pmtu+0x160/0x160 [ 46.179345] ? __sk_dst_check+0x1a5/0x380 [ 46.183462] ? sock_kzfree_s+0x60/0x60 [ 46.187341] l2tp_xmit_skb+0x105f/0x1410 [ 46.191376] ? l2tp_session_create+0xb80/0xb80 [ 46.195931] ? sock_wmalloc+0x15d/0x1d0 [ 46.199879] ? iov_iter_advance+0x13f0/0x13f0 [ 46.204345] ? pppol2tp_sendmsg+0x41b/0x670 [ 46.208646] pppol2tp_sendmsg+0x470/0x670 [ 46.212772] ? selinux_socket_sendmsg+0x36/0x40 [ 46.217411] ? pppol2tp_getsockopt+0x900/0x900 [ 46.221965] sock_sendmsg+0xca/0x110 [ 46.225649] SYSC_sendto+0x361/0x5c0 [ 46.229333] ? SYSC_connect+0x4a0/0x4a0 [ 46.233282] ? inet_dgram_connect+0x172/0x1f0 [ 46.237747] ? SYSC_connect+0x2e0/0x4a0 [ 46.241708] ? mm_fault_error+0x2c0/0x2c0 [ 46.245824] ? move_addr_to_kernel+0x60/0x60 [ 46.250204] SyS_sendto+0x40/0x50 [ 46.253628] ? SyS_getpeername+0x30/0x30 [ 46.257659] do_syscall_64+0x281/0x940 [ 46.261515] ? __do_page_fault+0xc90/0xc90 [ 46.265722] ? _raw_spin_unlock_irq+0x27/0x70 [ 46.270186] ? finish_task_switch+0x1c1/0x7e0 [ 46.274653] ? syscall_return_slowpath+0x550/0x550 [ 46.279554] ? syscall_return_slowpath+0x2ac/0x550 [ 46.284451] ? prepare_exit_to_usermode+0x350/0x350 [ 46.289438] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 46.294773] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.299588] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.304743] RIP: 0033:0x4429f9 [ 46.307901] RSP: 002b:00000000007dfe88 EFLAGS: 00000212 ORIG_RAX: 000000000000002c [ 46.315576] RAX: ffffffffffffffda RBX: 000000000000001a RCX: 00000000004429f9 [ 46.322822] RDX: 0000000000000000 RSI: 0000000020001180 RDI: 0000000000000004 [ 46.330064] RBP: 00000000004a4899 R08: 00000000200021c0 R09: 0000000000000080 [ 46.337302] R10: 0000000000040001 R11: 0000000000000212 R12: 00000000007dff70 [ 46.344540] R13: 0000000000403a30 R14: 0000000000000000 R15: 0000000000000000 [ 46.352168] Dumping ftrace buffer: [ 46.355678] (ftrace buffer empty) [ 46.359357] Kernel Offset: disabled [ 46.362954] Rebooting in 86400 seconds..