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Jeff-Lewis / address-sanitizer

Automatically exported from code.google.com/p/address-sanitizer
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Crash on ODR between instrumented and non-instrumented libraries #398

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
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.

Original issue reported on code.google.com by euge...@google.com on 14 Jul 2015 at 6:09

GoogleCodeExporter commented 9 years ago 
FYI that's what GCC does.

Original comment by tetra2...@gmail.com on 14 Jul 2015 at 7:03

GoogleCodeExporter commented 9 years ago 
Adding Project:AddressSanitizer as part of GitHub migration.

Original comment by ramosian.glider@gmail.com on 30 Jul 2015 at 9:06