panic: bad arg kind: goroutine 25 [running]: github.com/google/syzkaller/prog.clone(0x0, 0x0, 0xc00068b288, 0xc002a73440, 0xc00068a9d0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:79 +0x91b github.com/google/syzkaller/prog.clone(0x9b3580, 0xc0005497a0, 0xc00068b288, 0xc0022b13a0, 0xc00068aad0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b3580, 0xc000549800, 0xc00068b288, 0x9b3580, 0xc0022b1040) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b3640, 0xc000549820, 0xc00068b288, 0x9b3580, 0xc0022b0f20) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:63 +0x839 github.com/google/syzkaller/prog.clone(0x9b3580, 0xc000549860, 0xc00068b288, 0x9b3500, 0xc002a63db0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b3580, 0xc0005498a0, 0xc00068b288, 0x9b3500, 0xc00068aed0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b3640, 0xc0005498c0, 0xc00068b288, 0xc0030899d0, 0xc0022b0c80) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:63 +0x839 github.com/google/syzkaller/prog.clone(0x9b3580, 0xc0005498e0, 0xc00068b288, 0x9b3580, 0xc0022b0d40) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b3580, 0xc000549900, 0xc00068b288, 0x9b3540, 0xc00068b1d0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b35c0, 0xc00057fd40, 0xc00068b288, 0x9b3500, 0xc002a63ce0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:44 +0x567 github.com/google/syzkaller/prog.(*Prog).Clone(0xc0005dcdc0, 0x9004b6) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:24 +0x279 github.com/google/syzkaller/prog.(*randGen).resourceCentric(0xc002307980, 0xc001d1aaa0, 0xcadba0, 0x0, 0x898980, 0x1, 0xc001e8b660, 0xc00068b528, 0x792dc9) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:839 +0xc2 github.com/google/syzkaller/prog.(*ResourceType).generate(0xcadba0, 0xc002307980, 0xc001d1aaa0, 0x0, 0x9b3500, 0xc001e8b660, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:669 +0x27c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002307980, 0xc001d1aaa0, 0x9b99c0, 0xcadba0, 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(0xc002307980, 0xc001d1aaa0, 0xd44f20, 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(0xcba500, 0xc002307980, 0xc001d1aaa0, 0x0, 0xd7e6c0, 0x0, 0x0, 0x20, 0x20) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:780 +0x7c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002307980, 0xc001d1aaa0, 0x9b9aa0, 0xcba500, 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(0xc002307980, 0xc001d1aaa0, 0xcb5ca0, 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(0xcba6e0, 0xc002307980, 0xc001d1aaa0, 0x0, 0xd7e6c0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:780 +0x7c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002307980, 0xc001d1aaa0, 0x9b9aa0, 0xcba6e0, 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(0xcb56e0, 0xc002307980, 0xc001d1aaa0, 0x9b3640, 0xc0023069c0, 0xc002306488, 0xcb56a0, 0x2, 0x2, 0xc001ea10e0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:457 +0x178 github.com/google/syzkaller/prog.(*Target).mutateArg(0xc000079860, 0xc002307980, 0xc001d1aaa0, 0x9b3640, 0xc0023069c0, 0xc002306488, 0xcb56a0, 0x2, 0x2, 0xc001ea10e0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:229 +0xe3 github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc00068bec0, 0xa) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:182 +0x288 github.com/google/syzkaller/prog.(*Prog).Mutate(0xc001eae200, 0x9acc00, 0xc001ee5e00, 0x14, 0xc001e65180, 0xc002184000, 0x27a8, 0x3000) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:47 +0x32c main.(*Proc).loop(0xc001e651c0) /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