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=1794065065; b=a7tAB24GlCEhVpX01t/injBtGDLazvl2EFe0zeWqa5EqsfQ1xf2RrjCEdmNmHoVcXI6/ dFAwE6/idoo0Y6ZwsRjSgJwxcy9C37SVT4mpXVsE69ELG8mJEPGO/mpnTtahW1O4K5lly zPUCZapIDRPtyr4KSJQM1SP2UZrwOzXfvNXrjniT5WYq1TzKGSYSIlmk+n5OXy0ReqrA+ NDcuYmgykx8JZyqw2J48ZmJntfAAtZcAVkAouC0j8l31MwzRuFts0TOsEdRY3IeJj5Y+P k4+DrieXCeTV00T/V9IdAO4Qy0JxeGnUVdyl7c1/tIRzEHOn1vQFVKutBuGO29ijLVg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794065065; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=2SvlZUEg9eVdfbe0Hkk4GKypFbav5ti3vN0DFquwb08=; b=EoQWEU5VX3NdXvl7oQ9Fe/ayPzLeiJDUwDYuCk4I8GObARlGpYxc/6aJaB5bc7qaCsyH rnyryFkFjsBks58yxJ6lO5sIJWGcQ8grSZmf/1Zw8wZqljg4lAJjQaBaIcHB9xTsG+OCZ /Rvu83hdnHPV0c3NvhurV6oNZktopeJ3kGN4UUTXYHFxlCYDdnXOVMLf9H7aPwBeqLCzl 6WL27qvrG5fCpGUFpg8/1x34TzmOhL2NbXBNhn3N+1wOYbbxGsaygupPdK0efooV5ikvL R99CIafZJWN+mB09mHU+EIL/iDmnVlLpNeTKDoq7JZxJlx0xfZddPunNKMZ3amLPmjw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=K1fVa3vM; 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 811F4606A9C0; Sat, 7 Nov 2026 15:24:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=K1fVa3vM Received: by smtp.kernel.org (Postfix) with ESMTPSA id A28491F0089F; Sat, 7 Nov 2026 15:24:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794065065; bh=2SvlZUEg9eVdfbe0Hkk4GKypFbav5ti3vN0DFquwb08=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=K1fVa3vMyS64qmSmbP24frhkkP+uGrHtd3y5TtqTIkZ0oYiOrxVnxXKEIH5N9XBZY QaIzyHyV6EMMKDplJOLe60o+Z7rlTy+p0umQnLqp6qzbXIyVkiy9LMd+sRSMPYtF71 09eUTxee6eOrg6uxfDpMCPoCt8Tol8nHluXdTs5k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hyunchul Lee , Namjae Jeon , Sasha Levin Subject: [PATCH 7.3 0908/1257] ntfs: serialize raw MFT updates against folio writeback Date: Sat, 7 Nov 2026 08:53:24 -0500 Message-ID: <20261107135004.415123133@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hyunchul Lee [ Upstream commit ec0a5dd2e385e11839e8846dabe1f9f7042ac202 ] Because MFT folio writeback can remain active until its asynchronous BIO completes, raw MFT record formatting and allocation must not modify the folio while it is still used as a BIO source. Wait for existing folio writeback after taking the folio lock in both raw MFT update paths. Fixes: 115380f9a2f9 ("ntfs: update mft operations") Cc: stable@vger.kernel.org Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon Signed-off-by: Sasha Levin --- fs/ntfs/mft.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c index b102e0204eba9..c7577c3224541 100644 --- a/fs/ntfs/mft.c +++ b/fs/ntfs/mft.c @@ -2022,6 +2022,8 @@ static int ntfs_mft_record_format(const struct ntfs_volume *vol, const s64 mft_n return PTR_ERR(folio); } folio_lock(folio); + if (folio_test_writeback(folio)) + folio_wait_writeback(folio); folio_clear_uptodate(folio); m = (struct mft_record *)((u8 *)kmap_local_folio(folio, 0) + ofs); err = ntfs_mft_record_layout(vol, mft_no, m); @@ -2539,6 +2541,8 @@ int ntfs_mft_record_alloc(struct ntfs_volume *vol, const int mode, goto undo_mftbmp_alloc; } folio_lock(folio); + if (folio_test_writeback(folio)) + folio_wait_writeback(folio); folio_clear_uptodate(folio); m = (struct mft_record *)((u8 *)kmap_local_folio(folio, 0) + ofs); /* If we just formatted the mft record no need to do it again. */ -- 2.53.0