panic: bad arg kind: goroutine 25 [running]: github.com/google/syzkaller/prog.clone(0x0, 0x0, 0xc000527288, 0x9b2b60, 0xc0025f56d0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:79 +0x91b github.com/google/syzkaller/prog.clone(0x9b2be0, 0xc00041fa80, 0xc000527288, 0x9b2be0, 0xc0028e4be0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b2be0, 0xc00041fb20, 0xc000527288, 0x9b2be0, 0xc0028e4aa0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b2be0, 0xc00041fb80, 0xc000527288, 0x9b2b60, 0xc0025f52e0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b2be0, 0xc00041fba0, 0xc000527288, 0xc000527310, 0xc0005271d0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b2c20, 0xc000473560, 0xc000527288, 0x9b2b60, 0xc0025f52b0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:44 +0x567 github.com/google/syzkaller/prog.(*Prog).Clone(0xc000432dc0, 0x90014a) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:24 +0x279 github.com/google/syzkaller/prog.(*randGen).resourceCentric(0xc003021d20, 0xc001e48c30, 0xcac6a0, 0x0, 0x9b2c60, 0xc002024f60, 0xc002a0c630, 0x1, 0xc000527598) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:839 +0xc2 github.com/google/syzkaller/prog.(*ResourceType).generate(0xcac6a0, 0xc003021d20, 0xc001e48c30, 0x0, 0x9b2c60, 0xd5cac0, 0x233e5f008, 0x0, 0x1) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:669 +0x27c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc003021d20, 0xc001e48c30, 0x9b8f00, 0xcac6a0, 0xc002a00000, 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(0xc003021d20, 0xc001e48c30, 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, 0xc003021d20, 0xc001e48c30, 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(0xc003021d20, 0xc001e48c30, 0x9b8fc0, 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(0xc003021d20, 0xc001e48c30, 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, 0xc003021d20, 0xc001e48c30, 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(0xc003021d20, 0xc001e48c30, 0x9b8fc0, 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(0xcafaa0, 0xc003021d20, 0xc001e48c30, 0x9b2ca0, 0xc003021c80, 0xc003021bc8, 0xcb5fa0, 0x2, 0x2, 0xc0020248a0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:457 +0x178 github.com/google/syzkaller/prog.(*Target).mutateArg(0xc0000d3520, 0xc003021d20, 0xc001e48c30, 0x9b2ca0, 0xc003021c80, 0xc003021bc8, 0xcb5fa0, 0x2, 0x2, 0xc0020248a0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:229 +0xe3 github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc000527ec0, 0xa) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:182 +0x288 github.com/google/syzkaller/prog.(*Prog).Mutate(0xc002029d80, 0x9ac260, 0xc002b678c0, 0x14, 0xc002c2ca80, 0xc002bb2000, 0x274a, 0x3000) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:47 +0x32c main.(*Proc).loop(0xc002c2cac0) /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