panic: bad arg kind: goroutine 23 [running]: github.com/google/syzkaller/prog.clone(0x0, 0x0, 0xc002a1b768, 0xc00289c150, 0xc002893700) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:79 +0x954 github.com/google/syzkaller/prog.(*Prog).Clone(0xc00044af40, 0x8f0322) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:24 +0x279 github.com/google/syzkaller/prog.resourceCentric(0xcb14e0, 0xc002568c30, 0xc00263dae0, 0xc00263d801, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:848 +0xbf github.com/google/syzkaller/prog.(*ResourceType).generate(0xcb14e0, 0xc00263dae0, 0xc002568c30, 0xc002640220, 0xc0026401e0, 0x70, 0xc002a1bb00, 0xc002a1be28) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:681 +0x920 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc00263dae0, 0xc002568c30, 0x9ae7e0, 0xcb14e0, 0xc002a1bc00, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:674 +0x506 github.com/google/syzkaller/prog.(*randGen).generateArg(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:623 github.com/google/syzkaller/prog.regenerate(0xc00263dae0, 0xc002568c30, 0x9a7720, 0xc002610a00, 0x49d0b8, 0x3, 0xc00259f800, 0x4) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:252 +0x6f github.com/google/syzkaller/prog.(*ResourceType).mutate(0xcb14e0, 0xc00263dae0, 0xc002568c30, 0x9a7720, 0xc002610a00, 0xc002640250, 0xc0026401e0, 0x8, 0x0, 0x40335a98db106d0b, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:321 +0x4d github.com/google/syzkaller/prog.(*Target).mutateArg(0xc000079860, 0xc00263dae0, 0xc002568c30, 0x9a7720, 0xc002610a00, 0xc002640250, 0xc0026401e0, 0x8, 0x4ef200, 0xc002a1bdff, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:232 +0xe3 github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc002a1bec0, 0xa) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:176 +0x244 github.com/google/syzkaller/prog.(*Prog).Mutate(0xc0026107c0, 0x9a1f20, 0xc0021efce0, 0x1e, 0xc0021dfec0, 0xc002618000, 0x1e8f, 0x2400) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:44 +0x2da main.(*Proc).loop(0xc0021dff00) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:99 +0x434 created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:259 +0x114c