panic: sandbox escaping file name "../file0", Files are map[../file0:true] goroutine 16 [running]: github.com/google/syzkaller/prog.(*randGen).filename(0xc0002bf6a0, 0xc0006a0a80, 0xbf4c40, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:161 +0x2e3 github.com/google/syzkaller/prog.(*BufferType).mutate(0xbf4c40, 0xc0002bf6a0, 0xc0006a0a80, 0x8faa00, 0xc000219c80, 0xc0006a0a48, 0xc000219c50, 0x0, 0xc000219d00, 0x2d3775c948d8b403, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:264 +0x533 github.com/google/syzkaller/prog.(*Target).mutateArg(0xc0000731e0, 0xc0002bf6a0, 0xc0006a0a80, 0x8faa00, 0xc000219c80, 0xc0006a0a48, 0xc000219c50, 0x0, 0x4f0f00, 0xc0008f5d87, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:172 +0xe3 github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc0008f5e48, 0xa) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:153 +0x231 github.com/google/syzkaller/prog.(*Prog).Mutate(0xc0006a0900, 0x8f8680, 0xc00074bbc0, 0x1e, 0xc000690400, 0xc0006ee000, 0xa24, 0xc00) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:34 +0x2db main.(*Proc).smashInput(0xc000690440, 0xc00047d5e0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:196 +0x103 main.(*Proc).loop(0xc000690440) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:82 +0x177created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:236 +0xfe2