panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x48 pc=0x76c2f4]

goroutine 25 [running]:
github.com/google/syzkaller/prog.ForeachArg(0xc002fc0d00, 0xc0011fd320)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:120 +0x64
github.com/google/syzkaller/prog.getCompatibleResources(0xc002fc0c40, 0x900149, 0xb, 0xc002ace0c0, 0x0, 0x0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:892 +0xb9
github.com/google/syzkaller/prog.(*randGen).resourceCentric(0xc002ace0c0, 0xc00234eff0, 0xcac6a0, 0x0, 0x0, 0x0, 0xc001738620, 0xc0011fd528, 0x792e29)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:840 +0xfe
github.com/google/syzkaller/prog.(*ResourceType).generate(0xcac6a0, 0xc002ace0c0, 0xc00234eff0, 0x0, 0x9b2c00, 0xc001738620, 0x0, 0x0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:669 +0x27c
github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002ace0c0, 0xc00234eff0, 0x9b8fa0, 0xcac6a0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:658 +0x450
github.com/google/syzkaller/prog.(*randGen).generateArg(...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:608
github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc002ace0c0, 0xc00234eff0, 0xd402e0, 0xc, 0xc, 0xaaaaaaaaaaaaaa00, 0x38, 0x8, 0x0, 0x0, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:596 +0x116
github.com/google/syzkaller/prog.(*StructType).generate(0xcb6c60, 0xc002ace0c0, 0xc00234eff0, 0x0, 0xd79600, 0x0, 0x0, 0x20, 0x20)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:780 +0x7c
github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002ace0c0, 0xc00234eff0, 0x9b9060, 0xcb6c60, 0x420000, 0x0, 0x0, 0x0, 0x0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:658 +0x450
github.com/google/syzkaller/prog.(*randGen).generateArg(...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:608
github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc002ace0c0, 0xc00234eff0, 0xcb6e20, 0x2, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:596 +0x116
github.com/google/syzkaller/prog.(*StructType).generate(0xcb6de0, 0xc002ace0c0, 0xc00234eff0, 0x0, 0xd79600, 0x0, 0x0, 0x0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:780 +0x7c
github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002ace0c0, 0xc00234eff0, 0x9b9060, 0xcb6de0, 0xd70000, 0x0, 0x0, 0x0, 0x0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:658 +0x450
github.com/google/syzkaller/prog.(*randGen).generateArg(...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:608
github.com/google/syzkaller/prog.(*UnionType).mutate(0xcaf9e0, 0xc002ace0c0, 0xc00234eff0, 0x9b2d40, 0xc002af5f60, 0xc002af5be8, 0xcb5c60, 0x2, 0x2, 0xc002e980c0, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:457 +0x178
github.com/google/syzkaller/prog.(*Target).mutateArg(0xc0000d36c0, 0xc002ace0c0, 0xc00234eff0, 0x9b2d40, 0xc002af5f60, 0xc002af5be8, 0xcb5c60, 0x2, 0x2, 0xc002e980c0, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:229 +0xe3
github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc0011fdec0, 0xa)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:182 +0x288
github.com/google/syzkaller/prog.(*Prog).Mutate(0xc00101fc80, 0x9ac300, 0xc002721f50, 0x14, 0xc00245ff00, 0xc0025fa000, 0x268b, 0x3000)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:47 +0x32c
main.(*Proc).loop(0xc00245ff40)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:95 +0x434
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:260 +0x1188