android_kernel_xiaomi_sm8450/mm/kfence
Marco Elver bc78acae08 UPSTREAM: kfence: avoid passing -g for test
Nathan reported that when building with GNU as and a version of clang that
defaults to DWARF5:

  $ make -skj"$(nproc)" ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- \
			LLVM=1 LLVM_IAS=0 O=build \
			mrproper allmodconfig mm/kfence/kfence_test.o
  /tmp/kfence_test-08a0a0.s: Assembler messages:
  /tmp/kfence_test-08a0a0.s:14627: Error: non-constant .uleb128 is not supported
  /tmp/kfence_test-08a0a0.s:14628: Error: non-constant .uleb128 is not supported
  /tmp/kfence_test-08a0a0.s:14632: Error: non-constant .uleb128 is not supported
  /tmp/kfence_test-08a0a0.s:14633: Error: non-constant .uleb128 is not supported
  /tmp/kfence_test-08a0a0.s:14639: Error: non-constant .uleb128 is not supported
  ...

This is because `-g` defaults to the compiler debug info default.  If the
assembler does not support some of the directives used, the above errors
occur.  To fix, remove the explicit passing of `-g`.

All the test wants is that stack traces print valid function names, and
debug info is not required for that.  (I currently cannot recall why I
added the explicit `-g`.)

Bug: 254441685
Link: https://lkml.kernel.org/r/20230316224705.709984-1-elver@google.com
Fixes: bc8fbc5f305a ("kfence: add test suite")
Signed-off-by: Marco Elver <elver@google.com>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 2e08ca1802441224f5b7cc6bffbb687f7406de95)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I79d57b803087295e1f07087a1bb855a6d6bce108
2023-09-08 12:39:57 +01:00
..
core.c UPSTREAM: kfence: fix memory leak when cat kfence objects 2022-02-11 17:30:26 -08:00
kfence_test.c UPSTREAM: kfence: report sensitive information based on no_hash_pointers 2021-03-01 18:11:05 +01:00
kfence.h UPSTREAM: kfence: report sensitive information based on no_hash_pointers 2021-03-01 18:11:05 +01:00
Makefile UPSTREAM: kfence: avoid passing -g for test 2023-09-08 12:39:57 +01:00
report.c UPSTREAM: kfence: fix reports if constant function prefixes exist 2021-04-29 08:13:57 +02:00