Re: [PATCH v9 00/17] Kernel address sanitizer - runtime memory debugger.

2015-01-23 Thread y.gribov
> Just to keep it going, here's a funny trace where kasan is catching issues
> in ubsan: :)

Thanks, I've filed an upstream PR for this
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64741



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Re: [RFC PATCH] UBSan: run-time undefined behavior sanity checker

2014-10-24 Thread y.gribov
> Unaligned accesses disabled because they are allowed on some arches (see
HAVE_EFFICIENT_UNALIGNED_ACCESS).
> Another reason is that there are to many reports. Not because there are
> lot of bugs, but because
> there are many reports for one bug. 

A side note - unaligned accesses would prevent KASan from doing it's job
well because instrumentation code relies on address alignment when
performing the check.

-Y



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