From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 051BB207673 for ; Wed, 5 Mar 2025 23:45:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741218308; cv=none; b=Ya1pAFz4Q337ga/spUqFdDWmRAL1sc5OI/ehORNWufRrJDpeHI60pjIE9rJtgG/EPhEZZX/uqsz8SCGi39kjBn44NdaT5zLG0rDTY42KoVHHCFzsInllK2IHRM3I8x+I0xmx0FFvAnDXXrG1Az/1vwJ/xDE/P6lZ1ObAAKI7FwM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741218308; c=relaxed/simple; bh=4cvRlUc3rI2xi5J0tbDDSIPTx3MVmFyTLGgvMGvricI=; h=Date:To:From:Subject:Message-Id; b=fYzCOWjGg6ZB9sAv1Cva3CpuWL6i0B+YlIF3ZFtfPVEAX15rdcfxYDoZDmBetqbN6CdtcI73ronoes/C8TqgVU4X8/6+WrXM8nps4BbU7AnJhnWUrYny2tgIVLAIjbDFamCRJ8mNR2obImNqpvnjuM6dXQPmyxYKyBksRFjg99A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=T8XgEXjm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="T8XgEXjm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5F03FC4CED1; Wed, 5 Mar 2025 23:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1741218307; bh=4cvRlUc3rI2xi5J0tbDDSIPTx3MVmFyTLGgvMGvricI=; h=Date:To:From:Subject:From; b=T8XgEXjmIHlMmDBPA+k6ZpIR0u3EMN1E0W/4dyS0YQ5r7v5ij8pYfM7p2SUU65u7g 3blF2xuE2cBAnPnm6KzuxP2jji7hF3eWD5Fn562QsWr4dT2CouiQacLF/ngCXaGlKc 5reUJ9NYBIztUWdLgDabDEnX6K+2S/r3E1uUGQMo= Date: Wed, 05 Mar 2025 15:45:06 -0800 To: mm-commits@vger.kernel.org,mika.westerberg@linux.intel.com,Jonathan.Cameron@huawei.com,ilpo.jarvinen@linux.intel.com,huang.ying.caritas@gmail.com,dan.j.williams@intel.com,bhelgaas@google.com,andriy.shevchenko@linux.intel.com,lizhijian@fujitsu.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] resource-fix-resource-leak-in-get_free_mem_region.patch removed from -mm tree Message-Id: <20250305234507.5F03FC4CED1@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: resource: fix resource leak in get_free_mem_region() has been removed from the -mm tree. Its filename was resource-fix-resource-leak-in-get_free_mem_region.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Li Zhijian Subject: resource: fix resource leak in get_free_mem_region() Date: Tue, 4 Mar 2025 12:34:15 +0800 The leak is detected by the kernel memory leak detector (`kmemleak`) following a `cxl create-region` failure: cxl_acpi ACPI0017:00: decoder0.0: created region2 cxl region2: HPA allocation error (-34) for size:0x0000000100000000 in CXL Window 0 [mem 0xa90000000-0x1a8fffffff flags 0x200] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) __kmalloc_cache_noprof+0x28c/0x350 get_free_mem_region+0x45/0x380 alloc_free_mem_region+0x1d/0x30 size_store+0x180/0x290 [cxl_core] kernfs_fop_write_iter+0x13f/0x1e0 vfs_write+0x37c/0x540 ksys_write+0x68/0xe0 do_syscall_64+0x6e/0x190 entry_SYSCALL_64_after_hwframe+0x76/0x7e [akpm@linux-foundation.org: fix braceology] Link: https://lkml.kernel.org/r/20250304043415.610286-1-lizhijian@fujitsu.com Fixes: 14b80582c43e ("resource: Introduce alloc_free_mem_region()") Signed-off-by: Li Zhijian Cc: Andriy Shevchenko Cc: Bjorn Helgaas Cc: Dan Wiliams Cc: "Huang, Ying" Cc: Ilpo Jarvinen Cc: Joanthan Cameron Cc: Mika Westeberg Signed-off-by: Andrew Morton --- kernel/resource.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/kernel/resource.c~resource-fix-resource-leak-in-get_free_mem_region +++ a/kernel/resource.c @@ -1998,8 +1998,11 @@ get_free_mem_region(struct device *dev, if (flags & GFR_REQUEST_REGION) { free_resource(res); devres_free(dr); - } else if (dev) + } else if (dev) { devm_release_action(dev, remove_free_mem_region, res); + } else { + free_resource(res); + } return ERR_PTR(-ERANGE); } _ Patches currently in -mm which might be from lizhijian@fujitsu.com are