panic: sandbox escaping file name "../file0" goroutine 17 [running]: github.com/google/syzkaller/prog.(*randGen).filename(0xc000752c00, 0xc000891240, 0xbf7440, 0xc0008992f0, 0x4f0c53) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:161 +0x2ac github.com/google/syzkaller/prog.(*BufferType).generate(0xbf7440, 0xc000752c00, 0xc000891240, 0x8fa9a0, 0xc000752e80, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:646 +0x4fc github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc000752c00, 0xc000891240, 0x8fd600, 0xbf7440, 0xc000899400, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc000752c00, 0xc000891240, 0x8fd600, 0xbf7440, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc000752c00, 0xc000891240, 0xbc72e0, 0x2, 0x2, 0xc000439830, 0x203000, 0x203000, 0x742bb6, 0x885e27, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:518 +0x11d github.com/google/syzkaller/prog.(*StructType).generate(0xbca4e0, 0xc000752c00, 0xc000891240, 0x10, 0xc7e300, 0x0, 0xc000899710, 0x4f0c53) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:713 +0x76 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc000752c00, 0xc000891240, 0x8fdba0, 0xbca4e0, 0xc000000000, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc000752c00, 0xc000891240, 0x8fdba0, 0xbca4e0, 0xc0005f2480, 0x7432d6, 0x882599, 0xb, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*UnionType).generate(0xbca320, 0xc000752c00, 0xc000891240, 0xb, 0xc7e300, 0x1, 0xc000899880, 0x4f0c53) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:720 +0xa3 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc000752c00, 0xc000891240, 0x8fdc40, 0xbca320, 0x7ffffffd00558700, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc000752c00, 0xc000891240, 0x8fdc40, 0xbca320, 0xc000439770, 0x7432d6, 0x885e17, 0x10, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*UnionType).generate(0xbca960, 0xc000752c00, 0xc000891240, 0x10, 0xc7e300, 0xc0008999e8, 0x4f0c53, 0xc000684960) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:720 +0xa3 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc000752c00, 0xc000891240, 0x8fdc40, 0xbca960, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc000752c00, 0xc000891240, 0x8fdc40, 0xbca960, 0x0, 0x0, 0x7437b2, 0x87a299, 0x3) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*PtrType).generate(0xbd7de0, 0xc000752c00, 0xc000891240, 0x8, 0x8, 0xc0005f2490, 0x0, 0xc000221c00) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:729 +0x84 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc000752c00, 0xc000891240, 0x8fda60, 0xbd7de0, 0xc000899b00, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc000752c00, 0xc000891240, 0x8fda60, 0xbd7de0, 0xc0005f2478, 0x1, 0x1, 0x1, 0x1) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc000752c00, 0xc000891240, 0xbca8e0, 0x3, 0x3, 0x74f0b307ca2f3b75, 0xc000899db0, 0x72beae, 0x7f3580, 0xc0006b1d40, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:518 +0x11d github.com/google/syzkaller/prog.(*randGen).generateParticularCall(0xc000752c00, 0xc000891240, 0xbe16e0, 0x4, 0xc000891240, 0xc0005f2468) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:462 +0xd1 github.com/google/syzkaller/prog.(*randGen).generateCall(0xc000752c00, 0xc000891240, 0xc0008911c0, 0xc000891240, 0xc000899e48, 0x7311e7) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:454 +0xa4 github.com/google/syzkaller/prog.(*mutator).insertCall(0xc000899ed0, 0x14) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:118 +0xcb github.com/google/syzkaller/prog.(*Prog).Mutate(0xc0008911c0, 0x8f8660, 0xc000684960, 0x1e, 0xc000769bc0, 0xc00074a000, 0x9c2, 0xc00) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:32 +0x299 main.(*Proc).loop(0xc0007683c0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:99 +0x446created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:236 +0xfe2 login: