IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready ================================================================== IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready BUG: KASAN: null-ptr-deref in memcpy include/linux/string.h:347 [inline] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x378/0x480 net/nfc/llcp_sock.c:532 Read of size 3 at addr (null) by task syz-executor.1/7118 IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready CPU: 1 PID: 7118 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0 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+0xf7/0x13b lib/dump_stack.c:58 kasan_report_error mm/kasan/report.c:349 [inline] kasan_report.cold.8+0x6d/0x2d3 mm/kasan/report.c:409 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 memcpy+0x23/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:347 [inline] llcp_sock_getname+0x378/0x480 net/nfc/llcp_sock.c:532 SYSC_getpeername+0x122/0x250 net/socket.c:1715 SyS_getpeername+0x9/0x10 net/socket.c:1699 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459f39 RSP: 002b:00007f651c28bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459f39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f651c28c6d4 R13: 00000000004c0bd0 R14: 00000000004d3668 R15: 00000000ffffffff ================================================================== IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready