On 3/19/21 4:19 PM, Naresh Kamboju wrote:

[This email landed to Spam for some reason, sending it again with modified subject]

While building arm64 kernel modules the following kernel warnings / errors noticed on linux next 20210318 tag the gcc version is 7.3.0. Build PASS with gcc-8, gcc-9 and gcc-10.

In file included from <command-line>:0:0: In function 'resiliency_test', inlined from 'test_slub_init' at lib/test_slub.c:120:2: include/linux/compiler_types.h:320:38: error: call to '__compiletime_assert_417' declared with attribute error: BUILD_BUG_ON failed: KMALLOC_MIN_SIZE > 16 | KMALLOC_SHIFT_HIGH < 10 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:301:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^~~~~~~~~~~~~~~~ lib/test_slub.c:101:2: note: in expansion of macro 'BUILD_BUG_ON' BUILD_BUG_ON(KMALLOC_MIN_SIZE > 16 | KMALLOC_SHIFT_HIGH < 10); ^~~~~~~~~~~~ make[2]: *** [ scripts/Makefile.build:273: lib/test_slub.o] Error 1 make[1]: *** [ Makefile:1980: lib] Error 2

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org

https://ci.linaro.org/view/lkft/job/openembedded-lkft-linux-next/DISTRO=lkft...

https://ci.linaro.org/view/lkft/job/openembedded-lkft-linux-next/DISTRO=lkft...

Andrew, please add this -fix Thanks.

----8<----

From f97312224278839321a5ff9be2b8487553a97c63 Mon Sep 17 00:00:00 2001

From: Vlastimil Babka vbabka@suse.cz Date: Fri, 19 Mar 2021 18:56:50 +0100 Subject: [PATCH] selftests: add a kselftest for SLUB debugging functionality-fix

Remove a BUILD_BUG_ON left over from original resiliency_test() that breaks builds.

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org Signed-off-by: Vlastimil Babka vbabka@suse.cz --- lib/test_slub.c | 3 --- 1 file changed, 3 deletions(-)

diff --git a/lib/test_slub.c b/lib/test_slub.c index 0075d9b44251..b7ad6c0b07a6 100644 --- a/lib/test_slub.c +++ b/lib/test_slub.c @@ -97,9 +97,6 @@ static void __init test_clobber_redzone_free(void)

static void __init resiliency_test(void) { - - BUILD_BUG_ON(KMALLOC_MIN_SIZE > 16 || KMALLOC_SHIFT_HIGH < 10); - pr_err("SLUB resiliency testing\n"); pr_err("-----------------------\n"); pr_err("A. Corruption after allocation\n");