Hi all,
Kernel Asan patches are currently being discussed in LKML. One of the
points raised during review was that KAsan requires GCC 5.0 which is
presumably unstable (e.g. compilation of kernel modules has been broken
for two months due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61848).
Would it make sense to backport Kasan-related patches to 4.9 branch to
make this feature more accessible to kernel developers? Quick analysis
showed that at the very least this would require
* r211091 (BUILT_IN_ASAN_REPORT_LOAD_N and friends)
* r211092 (instrument unaligned accesses)
* r211713 and r211699 (New asan-instrumentation-with-call-threshold
parameter)
* r213367 (initial support for -fsanitize=kernel-address)
and also maybe ~10 bugfix patches.
Is it ok to backport these to 4.9? Note that I would discard patches for
other sanitizers (UBsan, Tsan).
-Y
