[?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. [ 17.934837] audit: type=1400 audit(1520781516.154:6): avc: denied { map } for pid=4217 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 '10.128.0.29' (ECDSA) to the list of known hosts. syzkaller login: [ 24.406787] audit: type=1400 audit(1520781522.626:7): avc: denied { map } for pid=4231 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/11 15:18:42 parsed 1 programs 2018/03/11 15:18:42 executed programs: 0 [ 24.676280] audit: type=1400 audit(1520781522.896:8): avc: denied { map } for pid=4231 comm="syz-execprog" path="/root/syzkaller-shm424357603" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 24.691204] IPVS: ftp: loaded support on port[0] = 21 [ 24.977320] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 25.376463] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 25.382594] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.424306] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 25.467847] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.484105] ================================================================== [ 25.491559] BUG: KASAN: slab-out-of-bounds in ip6_xmit+0x1f76/0x2260 [ 25.498068] Read of size 8 at addr ffff8801c9c8f118 by task syz-executor0/4398 [ 25.505416] [ 25.507030] CPU: 1 PID: 4398 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #259 [ 25.514277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.523606] Call Trace: [ 25.526173] dump_stack+0x194/0x24d [ 25.529779] ? arch_local_irq_restore+0x53/0x53 [ 25.534422] ? show_regs_print_info+0x18/0x18 [ 25.538900] ? ip6_xmit+0x1f76/0x2260 [ 25.542679] print_address_description+0x73/0x250 [ 25.547498] ? ip6_xmit+0x1f76/0x2260 [ 25.551280] kasan_report+0x23c/0x360 [ 25.555062] __asan_report_load8_noabort+0x14/0x20 [ 25.559964] ip6_xmit+0x1f76/0x2260 [ 25.563584] ? ip6_finish_output2+0x23a0/0x23a0 [ 25.568231] ? fl6_update_dst+0x127/0x2b0 [ 25.572355] ? inet6_csk_route_socket+0x691/0xe80 [ 25.577176] ? trace_hardirqs_off+0x10/0x10 [ 25.581472] ? lock_acquire+0x1d5/0x580 [ 25.585424] ? lock_acquire+0x1d5/0x580 [ 25.589373] ? inet6_csk_xmit+0x114/0x580 [ 25.593495] ? trace_hardirqs_off+0x10/0x10 [ 25.597794] ? lock_release+0xa40/0xa40 [ 25.601783] inet6_csk_xmit+0x2fc/0x580 [ 25.605758] ? inet6_csk_update_pmtu+0x160/0x160 [ 25.610510] ? __sk_dst_check+0x1a5/0x380 [ 25.614664] ? sock_kfree_s+0x60/0x60 [ 25.618471] l2tp_xmit_skb+0x105f/0x1410 [ 25.622550] ? l2tp_session_create+0xb80/0xb80 [ 25.627118] ? sock_wmalloc+0x15d/0x1d0 [ 25.631071] ? iov_iter_advance+0x13f0/0x13f0 [ 25.635552] ? pppol2tp_sendmsg+0x41b/0x670 [ 25.639862] pppol2tp_sendmsg+0x470/0x670 [ 25.644004] ? selinux_socket_sendmsg+0x36/0x40 [ 25.648661] ? pppol2tp_getsockopt+0x900/0x900 [ 25.653226] sock_sendmsg+0xca/0x110 [ 25.656925] SYSC_sendto+0x361/0x5c0 [ 25.660633] ? SYSC_connect+0x4a0/0x4a0 [ 25.664609] ? find_held_lock+0x35/0x1d0 [ 25.668684] ? lock_downgrade+0x980/0x980 [ 25.672845] ? __do_page_fault+0x3d6/0xc90 [ 25.677072] SyS_sendto+0x40/0x50 [ 25.680502] ? SyS_getpeername+0x30/0x30 [ 25.684541] do_fast_syscall_32+0x3ec/0xf9f [ 25.688844] ? do_int80_syscall_32+0x9c0/0x9c0 [ 25.693399] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.698141] ? syscall_return_slowpath+0x2ac/0x550 [ 25.703063] ? prepare_exit_to_usermode+0x350/0x350 [ 25.708067] ? sysret32_from_system_call+0x5/0x3c [ 25.712907] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.717740] entry_SYSENTER_compat+0x70/0x7f [ 25.722123] RIP: 0023:0xf7f63c99 [ 25.725459] RSP: 002b:00000000ffa141ac EFLAGS: 00000282 ORIG_RAX: 0000000000000171 [ 25.733140] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020001180 [ 25.740387] RDX: 0000000000000000 RSI: 0000000000040001 RDI: 00000000200021c0 [ 25.747655] RBP: 0000000000000080 R08: 0000000000000000 R09: 0000000000000000 [ 25.754910] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.762155] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.769414] [ 25.771021] Allocated by task 0: [ 25.774368] (stack is not available) [ 25.778158] [ 25.779760] Freed by task 0: [ 25.782749] (stack is not available) [ 25.786431] [ 25.788040] The buggy address belongs to the object at ffff8801c9c8f100 [ 25.788040] which belongs to the cache ip_dst_cache of size 168 [ 25.800759] The buggy address is located 24 bytes inside of [ 25.800759] 168-byte region [ffff8801c9c8f100, ffff8801c9c8f1a8) [ 25.812519] The buggy address belongs to the page: [ 25.817426] page:ffffea00072723c0 count:1 mapcount:0 mapping:ffff8801c9c8f000 index:0x0 [ 25.825544] flags: 0x2fffc0000000100(slab) [ 25.829755] raw: 02fffc0000000100 ffff8801c9c8f000 0000000000000000 0000000100000010 [ 25.837618] raw: ffffea0007305da0 ffff8801d7c2d248 ffff8801d5ba2800 0000000000000000 [ 25.845474] page dumped because: kasan: bad access detected [ 25.851173] [ 25.852771] Memory state around the buggy address: [ 25.857672] ffff8801c9c8f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 25.865013] ffff8801c9c8f080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc [ 25.872358] >ffff8801c9c8f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.879700] ^ [ 25.883839] ffff8801c9c8f180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.891178] ffff8801c9c8f200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.898513] ================================================================== [ 25.905847] Disabling lock debugging due to kernel taint [ 25.911295] Kernel panic - not syncing: panic_on_warn set ... [ 25.911295] [ 25.918660] CPU: 1 PID: 4398 Comm: syz-executor0 Tainted: G B 4.16.0-rc4+ #259 [ 25.927210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.936540] Call Trace: [ 25.939108] dump_stack+0x194/0x24d [ 25.942709] ? arch_local_irq_restore+0x53/0x53 [ 25.947350] ? kasan_end_report+0x32/0x50 [ 25.951471] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.956199] ? vsnprintf+0x1ed/0x1900 [ 25.959978] ? ip6_xmit+0x1f30/0x2260 [ 25.963750] panic+0x1e4/0x41c [ 25.966927] ? refcount_error_report+0x214/0x214 [ 25.971658] ? add_taint+0x1c/0x50 [ 25.975166] ? add_taint+0x1c/0x50 [ 25.978693] ? ip6_xmit+0x1f76/0x2260 [ 25.982466] kasan_end_report+0x50/0x50 [ 25.986411] kasan_report+0x149/0x360 [ 25.990188] __asan_report_load8_noabort+0x14/0x20 [ 25.995096] ip6_xmit+0x1f76/0x2260 [ 25.998706] ? ip6_finish_output2+0x23a0/0x23a0 [ 26.003351] ? fl6_update_dst+0x127/0x2b0 [ 26.007477] ? inet6_csk_route_socket+0x691/0xe80 [ 26.012294] ? trace_hardirqs_off+0x10/0x10 [ 26.016590] ? lock_acquire+0x1d5/0x580 [ 26.020536] ? lock_acquire+0x1d5/0x580 [ 26.024498] ? inet6_csk_xmit+0x114/0x580 [ 26.028622] ? trace_hardirqs_off+0x10/0x10 [ 26.032915] ? lock_release+0xa40/0xa40 [ 26.036867] inet6_csk_xmit+0x2fc/0x580 [ 26.040816] ? inet6_csk_update_pmtu+0x160/0x160 [ 26.045542] ? __sk_dst_check+0x1a5/0x380 [ 26.049661] ? sock_kfree_s+0x60/0x60 [ 26.053445] l2tp_xmit_skb+0x105f/0x1410 [ 26.057492] ? l2tp_session_create+0xb80/0xb80 [ 26.062052] ? sock_wmalloc+0x15d/0x1d0 [ 26.065999] ? iov_iter_advance+0x13f0/0x13f0 [ 26.070488] ? pppol2tp_sendmsg+0x41b/0x670 [ 26.074804] pppol2tp_sendmsg+0x470/0x670 [ 26.078937] ? selinux_socket_sendmsg+0x36/0x40 [ 26.083595] ? pppol2tp_getsockopt+0x900/0x900 [ 26.088173] sock_sendmsg+0xca/0x110 [ 26.091889] SYSC_sendto+0x361/0x5c0 [ 26.095601] ? SYSC_connect+0x4a0/0x4a0 [ 26.099577] ? find_held_lock+0x35/0x1d0 [ 26.103638] ? lock_downgrade+0x980/0x980 [ 26.107802] ? __do_page_fault+0x3d6/0xc90 [ 26.112056] SyS_sendto+0x40/0x50 [ 26.115496] ? SyS_getpeername+0x30/0x30 [ 26.119536] do_fast_syscall_32+0x3ec/0xf9f [ 26.123837] ? do_int80_syscall_32+0x9c0/0x9c0 [ 26.128389] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.133122] ? syscall_return_slowpath+0x2ac/0x550 [ 26.138027] ? prepare_exit_to_usermode+0x350/0x350 [ 26.143027] ? sysret32_from_system_call+0x5/0x3c [ 26.147847] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.152668] entry_SYSENTER_compat+0x70/0x7f [ 26.157047] RIP: 0023:0xf7f63c99 [ 26.160385] RSP: 002b:00000000ffa141ac EFLAGS: 00000282 ORIG_RAX: 0000000000000171 [ 26.168065] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020001180 [ 26.175329] RDX: 0000000000000000 RSI: 0000000000040001 RDI: 00000000200021c0 [ 26.182573] RBP: 0000000000000080 R08: 0000000000000000 R09: 0000000000000000 [ 26.189823] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 26.197155] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 26.205029] Dumping ftrace buffer: [ 26.208550] (ftrace buffer empty) [ 26.212251] Kernel Offset: disabled [ 26.215861] Rebooting in 86400 seconds..