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Thu, 28 Sep 2023 01:40:43 -0700 (PDT) Received: from [192.168.0.106] ([103.124.138.83]) by smtp.gmail.com with ESMTPSA id o28-20020a637e5c000000b0057cb5a780ebsm10756666pgn.76.2023.09.28.01.40.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Sep 2023 01:40:43 -0700 (PDT) Message-ID: <4f01f302-9d59-4146-b7ff-0478c4bd94b1@gmail.com> Date: Thu, 28 Sep 2023 15:40:31 +0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Kees Cook , Daniel Micay , Nick Desaulniers , Andrew Morton , freeze0985@gmail.com Cc: Linux Kernel Mailing List , Linux Regressions , Linux Memory Management List From: Bagas Sanjaya Subject: Fwd: kmalloc memory leak over time. Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: 5iamjkjupe7kc3rtgsdz1dw8898awwqq X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 22AEFC0013 X-Rspam-User: X-HE-Tag: 1695890444-291676 X-HE-Meta: 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 H1n52p9e ET1ulY6vl6/zru1u/0vtAIIJSZ6IjamblQ3Zwh6rGMCBvZhDD+NyTkNguR7REl5ejrKeZd6YA8BOD9Zq3K5LIIwbsF4NeABKh4HcyI9B41ADPT9ji89RoEBXSIXykUkJAvUeIALvlQkCjMuBceJNKX7Gze2NMDSHVQI8IsOHUXzecLX67zxrEZTbVk7lIhFzxGdP2uWPp/w/tMSW7s1b14Rxcplh11aAMCcu0DFZuthS9h1sycahr929c1J5mq4DJbSn9XpoY0aKNiHC8amjgFj2tWf25g3ar1GclCrtbUvpYD/fBndU5Z88USlLh8w3KeOeEV9HBFq1W5qx0HcJSkMWA4eEVj9bCgRY33TVW2Ph0clFLk3obtLu6FB3Xt34mU/L2bHT2FXFaSdgGmPUaSKr5FoqAEbxx0vZxH+zF+YptesjqUPTV+KmRgAeQHMaEFYOHHN3o4dLZUesrr7SsR8wHKYUUOYpkZow7cRdeSEFwjEU= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000003, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, I notice a regression report on Bugzilla [1]. Quoting from it: > Since 1st weak of Sept I have been observing memory leak in my system, so after doing a little big of digging I found out that the leak is caused by kmalloc. In Linux 6.5.3 memory leak would increase to nearly 50% of my ram over a period of 6-9 hours. In the Newer Linux 6.5.4 I am yet to observe that much memory leak(Haven't used my laptop for that long till now) but over a period of 3 hours I see 2.2GB reserved and it is not used by any program at all. this is just after 3 hours of usage on Linux 6.5.4. Later, the reporter (Cc'ed) narrowed down the version range, with memory statistics: > 6.4 works fine I down graded to it before linux 6.5.4 was released. no memory leak. > > today i ran my laptop for 6 hours and 40 mins and this memory leak is still happening at same rate. > > total used free shared buff/cache available > Mem: 15Gi 7.2Gi 2.8Gi 797Mi 6.4Gi 8.1Gi > Swap: 0B 0B 0B > Total: 15Gi 7.2Gi 2.8Gi See Bugzilla for the full thread. Anyway, I'm adding this regression to be tracked by regzbot: #regzbot introduced: v6.4..v6.5 https://bugzilla.kernel.org/show_bug.cgi?id=217943 Thanks. [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217943 -- An old man doll... just what I always wanted! - Clara