panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x76c12e]

goroutine 28 [running]:
github.com/google/syzkaller/prog.foreachArgImpl(0x9a61c0, 0xc002a3c9f0, 0xc002a8e4c8, 0xc002a3c9c0, 0x0, 0x0, 0xc000aafc00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:137 +0x1ee
github.com/google/syzkaller/prog.foreachArgImpl(0x9a6200, 0xc002a3c9c0, 0xc002a8e4c8, 0x0, 0x0, 0x7b7100, 0xc000aafc00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:153 +0x3e8
github.com/google/syzkaller/prog.ForeachArg(0xc002a8e4c0, 0xc000aafc00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:120 +0x9e
github.com/google/syzkaller/prog.(*Target).CallContainsAny(0xc0000d89c0, 0xc002a8e4c0, 0x100)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/any.go:191 +0x6b
main.signalPrio(0xc002a8e3c0, 0xc000aafd38, 0x1, 0x186)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:508 +0x68
main.(*Fuzzer).checkNewCallSignal(0xc0000a2580, 0xc002a8e3c0, 0xc000aafd38, 0x1, 0xc000aafd00)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:488 +0x43
main.(*Fuzzer).checkNewSignal(0xc0000a2580, 0xc002a8e3c0, 0xc0025e0c60, 0x0, 0x0, 0x0, 0x7ffffffd02a93b00)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:479 +0x1a1
main.(*Proc).execute(0xc001ff8f00, 0xc000022160, 0xc002a8e3c0, 0x0, 0x1, 0x1)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:256 +0x9d
main.(*Proc).loop(0xc001ff8f00)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:101 +0x4de
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:259 +0x114c