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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: Dev Jain 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: DDB251C0004 X-Rspamd-Server: rspam07 X-Stat-Signature: exxfhy1ppxchsibkxgxdbj4fch4k55kp X-Rspam-User: X-HE-Tag: 1776400630-187304 X-HE-Meta: U2FsdGVkX18Pezo8/RR38kMcQB9JhhuRDAxWBJGgDoMzdmr6t/Mf9Yocje/ORWx33K1kXLR3KI1NiQfT2HARVaFgT+/sjY9aULqUYof8oYdBjw1w4rnrNue/3P0iO7orHNr54dPOq6/oMHRm0Z6JSCYiisOQo28fK+MNXdzdLHJ+GzXvT8zS3g3Ko09Fcc/viESxuyrZNU722sG7kaALOhVZoCjXKja3nv7vh4pfdQ9bs9C5kNDFTINoi9WCQzzLl09ftyXpvSx4//M9QN55FwTf3G9LdpgxHRJg5ZLYktb1PJMvatY37e5VZ9R/Blls3eABT+RRIccLJEvnjTpIr/ODDk6O3oYC4A76NPhKuSyu8PhFM+KJmw00MCXR/MvFaOTOYkPCIZEOnQZUTT6/sXOQiOzNkmQcrdSkic42ADO7qO+tK01+Ihefbtu/d9V6MsAj2Vxw0M0gulUZbeoDzifKP7dRNvb9mK2c5yPCw2e6ngGsEVkJFRQOKHn5DSCjkYuG3P2FnNsCOSKzcxUf2CPZJ3+hWWGxBaZ+a2bwnJS0fFsgvx80Meui3aSTaGpe0peRtHPx49V6SNQ/MoqGP4AG+6MCqnvcInG8gRk+/nnoBiBxsp/ty4XYyIJfwpXEJwNr6obzK8mJoxfDWAlpK7Y34pOFUwG8TGCbtvAOYSIxdzqjala6/v9EY67wAmfKVMlrI9LOcw6J1IiMD51sa++iAp9FSVkLKO5DV/i8VnUD6LBCMHTFylXrXl+XYj5pg25Rz03pLbZXKZmcHDjgGloaOVTxZfXAkVWJp37tFS3Ghgk6O55Hwv3ceCmnimerEcyDvHQbFH75VMTIxZaVlMvcVipMVVol+p9S6SfT4LMa4/ILr2QfOPxVDYn5CVnPMGxNV3U4Fu7JhwS71E9BuAl1pAzIchzBQK6vs4QZxnkUEwyIOKELAJIPcrjG56lqVVU33FwpFXCe72T6uOE YnhxK9j3 Jve41fHJOS1f0JY3pzdwfASVr7QmKDPAPgami9I9fyDQKFuPQMnS9ugjxqPDgVokk5sT52gPgjAQpv1ARpinmkBuPkOJ8FOiXHP4XjOgVdwalDQJNbxwOr/RZXqjcJp2qH6Rt3QWRiOb2mxT5dr/B55g6E+jRDYQn6I1xR/Y9BMT44wvy1vjfNvfZUZxtuRFTOSnU2HxbDU6CSwsntw3W1wvUu/+a9lCgdF39xAw6MSHAq+ojenEZeEs1Gc0QSn+GOkhwALEPER0DS6UY85dD6yIvSW42ImHykSU05iqdVkGioh6SQcr26fZrMLnQnNSwt5H5x44/JJ4xIeQIG45BxZkqnSCKjt1oPnTXh0s6YvXoXF8= 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: Dev Jain > 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 > >