8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready audit: type=1400 audit(1520834652.200:10): avc: denied { sys_chroot } for pid=4226 comm="syzkaller965195" 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 ================================================================== BUG: KASAN: slab-out-of-bounds in ip6_dst_idev include/net/ip6_fib.h:192 [inline] BUG: KASAN: slab-out-of-bounds in ip6_xmit+0x1f76/0x2260 net/ipv6/ip6_output.c:264 Read of size 8 at addr ffff8801d04d1118 by task syzkaller965195/4226 CPU: 1 PID: 4226 Comm: syzkaller965195 Not tainted 4.16.0-rc4+ #350 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report+0x23c/0x360 mm/kasan/report.c:412 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 ip6_dst_idev include/net/ip6_fib.h:192 [inline] ip6_xmit+0x1f76/0x2260 net/ipv6/ip6_output.c:264 inet6_csk_xmit+0x2fc/0x580 net/ipv6/inet6_connection_sock.c:139 l2tp_xmit_core net/l2tp/l2tp_core.c:1053 [inline] l2tp_xmit_skb+0x105f/0x1410 net/l2tp/l2tp_core.c:1148 pppol2tp_sendmsg+0x470/0x670 net/l2tp/l2tp_ppp.c:341 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 SYSC_sendto+0x361/0x5c0 net/socket.c:1747 SyS_sendto+0x40/0x50 net/socket.c:1715 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x441ca9 RSP: 002b:00000000007dfe98 EFLAGS: 00000212 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000000001a RCX: 0000000000441ca9 RDX: 0000000000000000 RSI: 0000000020001180 RDI: 0000000000000004 RBP: 00000000004a3cc6 R08: 00000000200021c0 R09: 0000000000000080 R10: 0000000000040001 R11: 0000000000000212 R12: 00000000007dff70 R13: 0000000000402ce0 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 0: (stack is not available) Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff8801d04d1100 which belongs to the cache ip_dst_cache of size 168 The buggy address is located 24 bytes inside of 168-byte region [ffff8801d04d1100, ffff8801d04d11a8) The buggy address belongs to the page: page:ffffea0007413440 count:1 mapcount:0 mapping:ffff8801d04d1000 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801d04d1000 0000000000000000 0000000100000010 raw: ffffea0006b26ae0 ffff8801d5bd5948 ffff8801d5bd7980 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d04d1000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d04d1080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc >ffff8801d04d1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801d04d1180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801d04d1200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================