https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108777
Bug ID: 108777
Summary: Add support for --param
asan-kernel-mem-intrinsic-prefix=1
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at
gcc dot gnu.org
Target Milestone: ---
As mentioned in the https://lkml.org/lkml/2023/2/9/1182 thread, Linux kernel
would like
to have --param asan-kernel-mem-intrinsic-prefix=1 support which would use
__asan_memcpy, __asan_memmove and __asan_memset with -fsanitize=kernel-address
and
__hwasan_memcpy, __hwasan_memmove and __hwasan_memset with
-fsanitize=kernel-hwaddress
instead of memcpy, memmove and memset calls in kasan instrumented functions,
such that
kernel memcpy/memmove/memset could remain uninstrumented for use in kernel
functions
with no_sanitize ("kernel-address").
