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 8D3421442FF; Sun, 28 Jul 2024 15:47:18 +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=1722181638; cv=none; b=SjrbOiZGrRPAw+rYyjv4FdGvsZNbk7OPkTiHUGniB5W5wlNp0ef9kC1eqC48AKokY8ayRAnLQsxzvcUMcGZiZ2bjpTDbVg5k6Vmz4mwGdzEkKMKp07DrglyM2fn3bGdI70G1UudsnLJWapfbK0RmUFZ5zo+mNedu9mJ+JfZUd7I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722181638; c=relaxed/simple; bh=wjvQmQ5YGynBpKVKyj6iQK+rXeV5WCwNq/x6RHsqnGQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TUYWGGqAVc9DYnwlplr89yJIgPGQnCEMPwI4fdtoGhbXKrqjMoBOUMcbIUQeYWWz4C6W47O5PN+oa2m9xr9owGAwtCgU5AiJ2YtYyt1y+mXBa22zevwKrkIqovA8dHZz7crtFuCu+9JcArvpOIsRWQ525X+F5K+OB1Sy69AG6ic= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rcqzhZsW; 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="rcqzhZsW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6892FC116B1; Sun, 28 Jul 2024 15:47:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722181638; bh=wjvQmQ5YGynBpKVKyj6iQK+rXeV5WCwNq/x6RHsqnGQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rcqzhZsW2a1EhMhHJOsQUjJ1veQcDaol4hzZMg2rIN7jbZWJlFTbRDtISCrcRv2k5 ai0Wl/FhU30UtfskHv4dQpFvJOxFkvwJ0LhrcB9tpMpIq2gNAXbySMdao2gxvaxl2K he4/8UttzMBMhxDMgku3XvrODrRGWlbuxcFgH2B/Qs/VzqszpVu+36KtzLeZCI41ME /RhVcpROxqp6T8OE5ECLzsKSq3mPxHWe/v56oAQ814/kehlqXJF1yjRHHDBmxiKKA+ tlI21aI2Pu15TVrc2hYMorfzYPkwmHbA0KyFS8BfRY7+jbMM/jcbuuJXbNkyjSS0Uc u9RLiKqA9za6g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Xiaxi Shen , syzbot+eaba5abe296837a640c0@syzkaller.appspotmail.com, Theodore Ts'o , Sasha Levin , adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 17/20] ext4: fix uninitialized variable in ext4_inlinedir_to_tree Date: Sun, 28 Jul 2024 11:45:15 -0400 Message-ID: <20240728154605.2048490-17-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240728154605.2048490-1-sashal@kernel.org> References: <20240728154605.2048490-1-sashal@kernel.org> 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 6.6.43 Content-Transfer-Encoding: 8bit From: Xiaxi Shen [ Upstream commit 8dc9c3da79c84b13fdb135e2fb0a149a8175bffe ] Syzbot has found an uninit-value bug in ext4_inlinedir_to_tree This error happens because ext4_inlinedir_to_tree does not handle the case when ext4fs_dirhash returns an error This can be avoided by checking the return value of ext4fs_dirhash and propagating the error, similar to how it's done with ext4_htree_store_dirent Signed-off-by: Xiaxi Shen Reported-and-tested-by: syzbot+eaba5abe296837a640c0@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=eaba5abe296837a640c0 Link: https://patch.msgid.link/20240501033017.220000-1-shenxiaxi26@gmail.com Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin --- fs/ext4/inline.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 012d9259ff532..a604aa1d23aed 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1411,7 +1411,11 @@ int ext4_inlinedir_to_tree(struct file *dir_file, hinfo->hash = EXT4_DIRENT_HASH(de); hinfo->minor_hash = EXT4_DIRENT_MINOR_HASH(de); } else { - ext4fs_dirhash(dir, de->name, de->name_len, hinfo); + err = ext4fs_dirhash(dir, de->name, de->name_len, hinfo); + if (err) { + ret = err; + goto out; + } } if ((hinfo->hash < start_hash) || ((hinfo->hash == start_hash) && -- 2.43.0