panic: sandbox escaping file name "../file0" goroutine 16 [running]: github.com/google/syzkaller/prog.(*randGen).filename(0xc0004e0e20, 0xc00086ae00, 0xbf4ec0, 0xc0007ebd00, 0xc0007eb958) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:161 +0x2ac github.com/google/syzkaller/prog.(*BufferType).generate(0xbf4ec0, 0xc0004e0e20, 0xc00086ae00, 0xc0007d0000, 0x604e41d51ea3a989, 0xc0007eb9e8, 0x4f0c53, 0xc000481320) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:646 +0x4fc github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc0004e0e20, 0xc00086ae00, 0x8fd600, 0xbf4ec0, 0x100, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc0004e0e20, 0xc00086ae00, 0x8fd600, 0xbf4ec0, 0xaaaaaaaaaaaaaaaa, 0x38, 0x7437b2, 0x87a299, 0x3) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*PtrType).generate(0xbd1b40, 0xc0004e0e20, 0xc00086ae00, 0x40b7ff, 0xc0004e14a0, 0x20, 0x20, 0x8115a0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:729 +0x84 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc0004e0e20, 0xc00086ae00, 0x8fda60, 0xbd1b40, 0xc0007ebb00, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:581 +0x1b6 github.com/google/syzkaller/prog.(*randGen).generateArg(0xc0004e0e20, 0xc00086ae00, 0x8fda60, 0xbd1b40, 0x2, 0x2, 0x0, 0x203000, 0xc0007ebce8) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:530 +0x52 github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc0004e0e20, 0xc00086ae00, 0xbc6840, 0x2, 0x2, 0xe6bfa7adbbb30a8e, 0xc0007ebdb0, 0x72beae, 0x7f3580, 0xc000480750, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:518 +0x11d github.com/google/syzkaller/prog.(*randGen).generateParticularCall(0xc0004e0e20, 0xc00086ae00, 0xbdd420, 0x6d, 0xc00086ae00, 0xc00087c1b0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:462 +0xd1 github.com/google/syzkaller/prog.(*randGen).generateCall(0xc0004e0e20, 0xc00086ae00, 0xc00086abc0, 0xc00086ae00, 0xc0007ebe48, 0x7311e7) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:454 +0xa4 github.com/google/syzkaller/prog.(*mutator).insertCall(0xc0007ebed0, 0x14) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:118 +0xcb github.com/google/syzkaller/prog.(*Prog).Mutate(0xc00086abc0, 0x8f8660, 0xc000481320, 0x1e, 0xc0005a8e80, 0xc000588000, 0xa41, 0xc00) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:32 +0x299 main.(*Proc).loop(0xc0005a8ec0) /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: