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 00753628; Tue, 13 Feb 2024 00:18:40 +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=1707783521; cv=none; b=pD+Zh/3dz8W2R2IPZfTBOxZZ82cc0HUpmw5UaqdA0fI+0w2PF2ddJN0nsA7rhHyeGdk4eHjBcmQB4fBG7fjKsY2i4QJGuOsMVN6gAG3ahli//YYSVyRSg+3M9SQ8mg4PmSDChftNS8k3xStsli+YGaJKp6hCdARP0/B8coAJ/EY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707783521; c=relaxed/simple; bh=2j3dNwDryiyvYFP5CnvHVh2czT4Remf6l+d6t6Xcu3w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=iJ+f94PUG6Rrz8gQYJqxPWupUP/VEw22gpkhMJR9yaQvF3LSATRwPu1CaeqyY4gYHLoyH5d+wkfWjuC2ylOoI/2ldd4sDQJOmLZ/C7FagacFOGsEHojO28m334b4K5HGMTiR4QER1Xr0iPKfZ9/XDm0ES33tRRAtme0OoatAIls= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ryCzDLdx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ryCzDLdx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC5D1C433F1; Tue, 13 Feb 2024 00:18:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707783520; bh=2j3dNwDryiyvYFP5CnvHVh2czT4Remf6l+d6t6Xcu3w=; h=From:To:Cc:Subject:Date:From; b=ryCzDLdxeLdsr+nN4ZoxsqO06lexDPBjOHtTdswGq2pKHoFJBXXQDznSIp0qpCWhD HiQHptn/5x3lMn09Cb+ixGtKiZ5oVwrvZ6eEcvFhgRCla6LSxFdNOOaHof0W+UGSxj 12OC94pj6xcOh5oHE3V3MQ1eBgFunav0kbobWfjTGVkXldE+diQ9D9NoZwUwR8gB4/ qdE7OPiNZ41c5ZkuDcb7ZdyEOIQj9dWl/HxsERN/ynFgfaz4SJQxaPcyqlFmSV48i2 LtQFbGZAGS0Ew2LrFIYQK0qIXtqOUS/lVUHMVygCHHV75D2YiqbS7pL1rUqet6SqIn FAtujU989r73g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Konstantin Komarov , Sasha Levin , ntfs3@lists.linux.dev Subject: [PATCH AUTOSEL 6.7 01/58] fs/ntfs3: Improve alternative boot processing Date: Mon, 12 Feb 2024 19:17:07 -0500 Message-ID: <20240213001837.668862-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.7.4 Content-Transfer-Encoding: 8bit From: Konstantin Komarov [ Upstream commit c39de951282df9a60ef70664e4378d88006b2670 ] Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin --- fs/ntfs3/super.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index 9153dffde950..09d61c6c90aa 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -866,6 +866,7 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size, u16 fn, ao; u8 cluster_bits; u32 boot_off = 0; + sector_t boot_block = 0; const char *hint = "Primary boot"; /* Save original dev_size. Used with alternative boot. */ @@ -873,11 +874,11 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size, sbi->volume.blocks = dev_size >> PAGE_SHIFT; - bh = ntfs_bread(sb, 0); +read_boot: + bh = ntfs_bread(sb, boot_block); if (!bh) - return -EIO; + return boot_block ? -EINVAL : -EIO; -check_boot: err = -EINVAL; /* Corrupted image; do not read OOB */ @@ -1108,26 +1109,24 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size, } out: - if (err == -EINVAL && !bh->b_blocknr && dev_size0 > PAGE_SHIFT) { + brelse(bh); + + if (err == -EINVAL && !boot_block && dev_size0 > PAGE_SHIFT) { u32 block_size = min_t(u32, sector_size, PAGE_SIZE); u64 lbo = dev_size0 - sizeof(*boot); - /* - * Try alternative boot (last sector) - */ - brelse(bh); - - sb_set_blocksize(sb, block_size); - bh = ntfs_bread(sb, lbo >> blksize_bits(block_size)); - if (!bh) - return -EINVAL; - + boot_block = lbo >> blksize_bits(block_size); boot_off = lbo & (block_size - 1); - hint = "Alternative boot"; - dev_size = dev_size0; /* restore original size. */ - goto check_boot; + if (boot_block && block_size >= boot_off + sizeof(*boot)) { + /* + * Try alternative boot (last sector) + */ + sb_set_blocksize(sb, block_size); + hint = "Alternative boot"; + dev_size = dev_size0; /* restore original size. */ + goto read_boot; + } } - brelse(bh); return err; } -- 2.43.0