Status: Accepted
Owner: [email protected]
Labels: Type-Defect Priority-Medium
New issue 398 by [email protected]: Crash on ODR between instrumented and
non-instrumented libraries
https://code.google.com/p/address-sanitizer/issues/detail?id=398
When the same global variable is defined in ASan-instrumented and in a
non-instrumented libraries, there is a 50% chance that the linker will pick
the non-instrumented symbol and __asan_register_globals will attempt to
poison redzones around it.
Negative effects range from cryptic out-of-bounds reports to startup CHECK
failures (ex. because the uninstrumented variable is not 32-byte aligned).
I wonder if this can be mitigated by making the reference in asan global
descriptor point to a local symbol for the same global.
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