From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794272968; b=cRdPet1xRL7KMzi9rX890bZplQXFPEaZDJN6IAk9UG4bgOJciwDQs3DZLwaC1xqsRIBk Spcp35SySkAvOD5JyyJxkHasoHc0AgqxMYNtZcx3OwSrQaunNx63NBP9IOLcWE4qwPfoz VqpNY99XEAnUSqTjGou2XznZSGOKekG5GYkMjhMdZRvPyhTv7+wnKmjdiC9hqFNZ+SVKX lL04xXnszseNUMim3HLIhgup3R9ekcjCNnMEaRrwd+ydKALLlILvgfqIbc7GeLWUDKN/7 OpzowtUDTsZHC5C4BPNtlUABWmeDIYIjFcOwl2VejdM49Yn7QDNCn5BFDYqfcnC57Sg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794272968; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=vBcEg4BHxx5gWGRBBqt/XFunpU5E8pvoXQLdzQ75e+g=; b=via7Zi1xILJVBQanLMJvK+Iunt3/NfE1bSXFdPgv/LBiq/4cslrzhp4o2sF1mV1Bllk7 huMFRewc4VkV3ivHUEeFHaMKo57f8hRE33Z9Jq1wG3Y5oHRMXT72RPGQRA8su+3OJZoMW N8OIgT2sKiNh/LNiGrDvNeAiJyfjBXdFdg+eEWMeAYKpivpvL61WGn3U0HBDlgTEvBOU3 zS9QQG7RkQ5EQr1pAcbeyBGC9TxH9QN54RwH046VMKwBVWes/Qjzxqmj3vTfprHSNyeVe kENm78GKsIprEfALqriiCVghD+vi+qbqyqjJ5YSe4mwunFfHryO82mYl1CSGan/wDBA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cHkBPb5B; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55623606A32A for ; Tue, 10 Nov 2026 01:09:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cHkBPb5B Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66DB41F0089F; Tue, 10 Nov 2026 01:09:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794272968; bh=vBcEg4BHxx5gWGRBBqt/XFunpU5E8pvoXQLdzQ75e+g=; h=From:To:Cc:Subject:Date; b=cHkBPb5BGPN7xRPUDZW/UJK3BIUVYMmz4k9lU8eA482tiKIfJBc7ScMRR378uPKz4 +QnjA6vVRuq5B7h4baFKi55klJTuQVxqH8EFUcfolN0tlJOyWSZ64bVILgwM+vF0v8 1Zjg1pMJpwZ9sjVPmttYBcqfHvM92IiA9U6xzkgUXVk7f6Tgdr430RPtlcFFy4X8Al XoOiX0n7hhz/MQBnVo/fPBx81ymeHlFszaa3mp9ldEe6OV0V+rIWUF3PRbPkqO2OI9 4HWi+bIESwCkyeJkErCCyYiUkrfAf5YSihIEcpqBkazHeU0rHF0XQzDeRhO4F+xlru c/bgnd1TglUMQ== From: Sasha Levin To: david@kernel.org, josef@toxicpanda.com, ljs@kernel.org, pfalcato@suse.de, harry@kernel.org, usama.anjum@arm.com Cc: stable@vger.kernel.org Subject: FAILED: patch "[PATCH] mm/vma: don't leak the charge for stack growth" failed to apply to 6.12-stable tree Date: Mon, 9 Nov 2026 20:09:26 -0500 Message-ID: <20261109200926-failed-6.12-b1ee87802111@kernel.org> X-Mailer: git-send-email 2.53.0 X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x b1ee87802111156e27557e82acc31fa7dfc76e2a # git commit -s git send-email --to '' --in-reply-to '20261109200926-failed-6.12-b1ee87802111@kernel.org' --subject-prefix 'PATCH 6.12.y' 'HEAD^..' Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From b1ee87802111156e27557e82acc31fa7dfc76e2a Mon Sep 17 00:00:00 2001 From: "David Hildenbrand (Arm)" Date: Sat, 31 Oct 2026 10:40:13 +0100 Subject: [PATCH] mm/vma: don't leak the charge for stack growth acct_stack_growth() charges stack expansion even without VM_ACCOUNT. This can happen for read-only or MAP_NORESERVE mappings created with MAP_GROWSDOWN. Unmapping these VMAs does not release the charge, leaking Committed_AS. Only check and charge growth for VM_ACCOUNT VMAs, matching mremap(). Unaccounted growth skips the overcommit check while remaining subject to the other stack-growth limits. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Reported-by: Josef Bacik Reviewed-by: Lorenzo Stoakes (ARM) Reviewed-by: Pedro Falcato Reviewed-by: Harry Yoo (Meta) Tested-by: Muhammad Usama Anjum Link: https://patch.msgid.link/20261031-fixes_core-v3-44-d6437171ecc3@kernel.org Signed-off-by: David Hildenbrand (Arm) --- mm/vma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/vma.c b/mm/vma.c index acdf00346cda5..695d0be85ac86 100644 --- a/mm/vma.c +++ b/mm/vma.c @@ -3391,7 +3391,8 @@ static int acct_stack_growth(struct vm_area_struct *vma, * Overcommit.. This must be the final test, as it will * update security statistics. */ - if (security_vm_enough_memory_mm(mm, grow)) + if (vma_test(vma, VMA_ACCOUNT_BIT) && + security_vm_enough_memory_mm(mm, grow)) return -ENOMEM; return 0; -- 2.53.0