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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan Cc: Aishwarya TCV , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260416-selftests-mm-proc-mem-always-force-v1-1-3f5865153c67@kernel.org> Content-Language: en-US From: Anshuman Khandual In-Reply-To: <20260416-selftests-mm-proc-mem-always-force-v1-1-3f5865153c67@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 84E0CA0004 X-Rspamd-Server: rspam07 X-Stat-Signature: y1mptwkxxsqwss7kxstbbbuzu9o659su X-Rspam-User: X-HE-Tag: 1776394676-871127 X-HE-Meta: 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 lyr1szJl H/xPKkOPyw3usF8Av3ozwexcxfWDvHycqqWv64zdp+tdoDUgHYk+C0N2/vaCxAIq69cwmUAxJ3XP2loPsMIfhT8etDqLaIcf2wqF7Mr0+JtFMtFUgZHqMJa/mVC7xgTdytPockU4xrKpFnc8JRgZeLfIGGJrUcYkaUN6S5kQrrL56lDeHuX/Y7X1TfaNAgtrutDQ23pfB9Xi2c44sDwf3PrkmqZ4mq6KcT/6Ea6tBCcmuKLLBuJWE/MHNZEyBRtasnlrYoN6KxxzMpyMeY81WNcgvIpcfV597N5e10rvlndWsn3ls9BnFBPzCvFv8+SNO3IOmmO3Tq+BwRLJFrrhyPlE/XBAwAyyTpUnELXzKEzl8AnI= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 17/04/26 12:10 AM, Mark Brown wrote: > Several of the mm selftests made use of /proc/pid/mem as part of their > operation but we do not specify this in the config fragment for them, at > least mkdirty and ksm_functional_tests have this requirement. > > This has been working fine in practice since PROC_MEM_ALWAYS_FORCE was the > default setting but commit 599bbba5a36f ("proc: make PROC_MEM_FORCE_PTRACE > the Kconfig default") that is no longer the case, meaning that tests run > on kernels built based on defconfigs have started having the new more > restrictive default and failing. Add PROC_MEM_ALWAYS_FORCE to the config > fragment for the mm selftests. > > Thanks to Aishwarya TCV for spotting the issue and identifying the commit > that introduced it. > > Reported-by: Aishwarya TCV > Signed-off-by: Mark Brown Reviewed-by: Anshuman Khandual > --- > tools/testing/selftests/mm/config | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/tools/testing/selftests/mm/config b/tools/testing/selftests/mm/config > index 1dbe2b4558ab..06f78bd232e2 100644 > --- a/tools/testing/selftests/mm/config > +++ b/tools/testing/selftests/mm/config > @@ -13,3 +13,4 @@ CONFIG_PROFILING=y > CONFIG_UPROBES=y > CONFIG_MEMORY_FAILURE=y > CONFIG_HWPOISON_INJECT=m > +CONFIG_PROC_MEM_ALWAYS_FORCE=y > > --- > base-commit: 599bbba5a36f6de57ab14c373c25881e2b5273f5 > change-id: 20260416-selftests-mm-proc-mem-always-force-5ce1b26022c2 > > Best regards, > -- > Mark Brown > >