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sys/targets: increase DataOffset for 64bit builds #5765

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Feb 7, 2025
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sys/targets: increase DataOffset for 64bit builds #5765

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5 changes: 4 additions & 1 deletion sys/targets/targets.go
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Original file line number Diff line number Diff line change
Expand Up @@ -777,7 +777,10 @@ func initTarget(target *Target, OS, arch string) {
func (target *Target) defaultDataOffset() uint64 {
if target.PtrSize == 8 {
// An address from ASAN's 64-bit HighMem area.
return 0x200000000000
// 0x400000000000 works both for arm64 and amd64. We don't run syzkaller tests on any other platform.
// During real fuzzing, we don't build with ASAN, so the address should not matter much as long as
// it's far enough from the area allocated by malloc().
return 0x400000000000
}
// From 32-bit HighMem area.
return 0x80000000
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