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https://github.com/reactos/syzkaller.git
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6ba5fe3e62
TestSerializeDeserializeRandom fails from time to time because program is different after we serialize/deserialize it. Turns out openbsd SanitizeCall is not idempotent. Add a test for this and disable the logic for now.
53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
// Copyright 2017 syzkaller project authors. All rights reserved.
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// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
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package openbsd
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import (
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"github.com/google/syzkaller/prog"
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"github.com/google/syzkaller/sys/targets"
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)
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func InitTarget(target *prog.Target) {
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arch := &arch{
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unix: targets.MakeUnixSanitizer(target),
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}
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target.MakeMmap = targets.MakePosixMmap(target)
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target.SanitizeCall = arch.SanitizeCall
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}
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type arch struct {
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unix *targets.UnixSanitizer
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}
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func (arch *arch) SanitizeCall(c *prog.Call) {
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arch.unix.SanitizeCall(c)
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// Prevent vnodes of type VBAD from being created. Such vnodes will
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// likely trigger assertion errors by the kernel.
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// TODO(dvyukov): this is disabled for now because TestSanitizeRandom fails.
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if false {
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pos := 1
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switch c.Meta.CallName {
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case "mknodat":
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pos = 2
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fallthrough
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case "mknod":
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mode := c.Args[pos].(*prog.ConstArg)
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if mode.Val&arch.unix.S_IFMT != arch.unix.S_IFMT {
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return
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}
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saneMode := mode.Val & ^arch.unix.S_IFMT
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switch {
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case mode.Val&arch.unix.S_IFCHR == arch.unix.S_IFCHR:
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mode.Val = saneMode | arch.unix.S_IFCHR
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case mode.Val&arch.unix.S_IFBLK == arch.unix.S_IFBLK:
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mode.Val = saneMode | arch.unix.S_IFBLK
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case mode.Val&arch.unix.S_IFIFO == arch.unix.S_IFIFO:
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mode.Val = saneMode | arch.unix.S_IFIFO
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}
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}
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}
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}
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