net.ipv6.conf.syz_tun.router_solicitations = 0 ip: invalid argument 'add' to 'ip' command 'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin ip neigh add 172.20.20.187 lladdr aa:aa:aa:aa:aa:bb dev syz_tun nud permanent' failed: 256 (errno 1) loop failed (errno 0) panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x4ff509] goroutine 22 [running]: main.(*Context).printCallResults(0x0?, 0x57f98b?) /syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:177 +0x29 main.(*Context).execute(0xc00071a310, 0x3?, 0x0?, 0xc0000a2840) /syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:152 +0x332 main.(*Context).run(0xc00071a310, 0x0?) /syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:123 +0xc5 main.main.func1() /syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:86 +0x5c created by main.main /syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:84 +0x470