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[95.203.1.180]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-553e41cc0d4sm1359864e87.197.2025.06.23.04.29.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Jun 2025 04:29:25 -0700 (PDT) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Mon, 23 Jun 2025 13:29:22 +0200 To: Suren Baghdasaryan Cc: Uladzislau Rezki , Harry Yoo , kernel test robot , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Andrew Morton , Baoquan He , Adrian Huang , Christop Hellwig , Mateusz Guzik , linux-mm@kvack.org, Kent Overstreet Subject: Re: Kernel crash due to alloc_tag_top_users() being called when !mem_profiling_support? Message-ID: References: <202506181351.bba867dd-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 824A91C0002 X-Stat-Signature: 5akbcaq8rrxsx6iirb57dgdpf3ups5xp X-HE-Tag: 1750678168-192087 X-HE-Meta: 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 XsRqQ/0T 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, Jun 22, 2025 at 03:54:51PM -0700, Suren Baghdasaryan wrote: > On Fri, Jun 20, 2025 at 1:47 AM Uladzislau Rezki wrote: > > > > On Fri, Jun 20, 2025 at 12:04:50AM +0900, Harry Yoo wrote: > > > On Thu, Jun 19, 2025 at 11:10:43PM +0900, Harry Yoo wrote: > > > > On Wed, Jun 18, 2025 at 02:25:37PM +0800, kernel test robot wrote: > > > > > > > > > > Hello, > > > > > > > > > > for this change, we reported > > > > > "[linux-next:master] [lib/test_vmalloc.c] 7fc85b92db: Mem-Info" > > > > > in > > > > > https://lore.kernel.org/all/202505071555.e757f1e0-lkp@intel.com/ > > > > > > > > > > at that time, we made some tests with x86_64 config which runs well. > > > > > > > > > > now we noticed the commit is in mainline now. > > > > > > > > (Re-sending due to not Ccing people and the list...) > > > > > > > > Hi, I'm facing the same error on my testing environment. > > > > > > I should have clarified that the reason the kernel failed to allocate > > > memory on my machine was due to running out of memory, not because of the > > > vmalloc test module. > > > > > > But based on the fact that the test case (align_shift_alloc_test) is > > > expected to fail, the issue here is not memory allocation failure > > > itself, but rather that the kernel crashes when the allocation fails. > > > > > It looks someone tries to test the CONFIG_TEST_VMALLOC=y as built-in > > approach test-cases. Yes, it will trigger a lot of warnings as some > > use cases are supposed to be failed. This will trigger a lot of kernel > > warnings which can be considered by test-robot or people as problem. > > > > In this case i can exclude those use cases or even not run at all unless > > boot-parameters properly sets if built-in. > > Sorry, I'm catching up on my email backlog. IIUC > https://lore.kernel.org/all/20250620195305.1115151-1-harry.yoo@oracle.com/ > addresses this issue. Is my understanding correct? > I checked/tested the .config from the test-robot in order to reproduce the kernel crash. Unfortunately i can not trigger this. But, people from the another thread already confirmed that it solves the crash. -- Uladzislau Rezki