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 18DB01547D2; Mon, 13 Oct 2025 13:35:32 +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=1760362534; cv=none; b=YhE3EBVoM3tNv046USjxxGtKE5lCxP4sKvz5cplM+aUAW1xmDvgUpreJnbwU2BkWIsJVf9cy8IfjMybqa5fjqRQq6ssvsSDSQNslSMIWaQGplsyarnkfWXKa6RjqRaTFeh5GzBxAbIfLPR0ZjMxn+KV9h8uxXIPk1R/x6BH1hzw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760362534; c=relaxed/simple; bh=PIlHtuyYZBVvRjK3PjQM2sTRLBoRkuM4y2i5R3QPrNA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Hh+7+v+72u8NOxbZPdr35XBx6vNF5M5Pa2DB7TSFfTfUdnq+Fwes0NJ42UokoohZVF2UfpN4uW83C7ywXsw2h31dE+8+r4elwp74aTilAgcy42aDzMAffBaa8M9ukM82pjFlLKeDBiAq0hqV1BM2Wv8ugOV8Wa5IOVj7XIRx5Hk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ecMiudvK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ecMiudvK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 38833C4CEE7; Mon, 13 Oct 2025 13:35:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760362532; bh=PIlHtuyYZBVvRjK3PjQM2sTRLBoRkuM4y2i5R3QPrNA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ecMiudvK7aLVEWLaI1Y17fvF/OVQcxW2fxMIn9jG/snqetLjU8kgjEFqFZWUZOxnj tDkasEksiJ3XeiHwI2SkQfhimRBhFgNjm52CbpXWWW08kK0zybaS0PNQLfuXIvIeDx xhPrdicxZ6PhHbmdjbwat2VINs8aOAndCemlJZvQ= Date: Mon, 13 Oct 2025 15:35:29 +0200 From: Greg KH To: Deepanshu Kartikey Cc: sashal@kernel.org, stable@vger.kernel.org, stable-commits@vger.kernel.org, muchun.song@linux.dev, osalvador@suse.de, david@redhat.com Subject: Re: Patch "hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list" has been added to the 6.17-stable tree Message-ID: <2025101356-take-portside-5796@gregkh> References: <20251013012500.16338-1-kartikey406@gmail.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251013012500.16338-1-kartikey406@gmail.com> On Mon, Oct 13, 2025 at 06:55:00AM +0530, Deepanshu Kartikey wrote: > Hi Sasha, > > Please do NOT backport commit dd83609b8898 alone to stable. This patch > causes a regression in fallocate(PUNCH_HOLE) operations where pages are > not freed immediately, as reported by Mark Brown. > > The fix for this regression is already in linux-next as commit > 91a830422707 ("hugetlbfs: check for shareable lock before calling > huge_pmd_unshare()"). > > Please backport both commits together to avoid introducing the > regression in stable kernels: > - dd83609b88986f4add37c0871c3434310652ebd5 ("hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list") > - 91a830422707a62629fc4fbf8cdc3c8acf56ca64 ("hugetlbfs: check for shareable lock before calling huge_pmd_unshare()") As this is not in linux-next yet, I'll just drop this original patch for now. When it does land in Linus's tree, please let us know so we can submit both of them to the stable queues. thanks, greg k-h