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 45C4B15572A; Sun, 28 Jul 2024 15:49:53 +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=1722181793; cv=none; b=haDho1wcOXbnLnLyQ0qtdJgahVDjLZ3EkSVJWZAO5gLXKfgSHrWILZjMwRWeyQBisFVU9lZgJSMzlwpD0v7WIC78copeOBbyzrOyn5hKYZ+sC2z0XB59HTpiSbAGBIyahHRomkm+uPlrT5qR2AbGthqN0ubGl72vjt/KMT8m7Us= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722181793; c=relaxed/simple; bh=9EYuljhfcMjJD9/Krb8g2G2OQNsgjn5rET5cCzyvlBI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hE5n6iaqcwqxuoH4c+AO/Grsfk9zngccPBIzG2RRoHEkkUIj/VtLuBOHF7QI1Jq0gzlxUVSF8h/mIvjtKMF5JlQTj2WEXk9oyfQEJkzHgVdkbJ0heKayeDkPAujLpJRBBcTM3uJohrNmKmJnTeBwzr2G5tpttF+nFBtbkOfDK3E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=i2y9h7qO; 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="i2y9h7qO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E328C4AF14; Sun, 28 Jul 2024 15:49:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722181793; bh=9EYuljhfcMjJD9/Krb8g2G2OQNsgjn5rET5cCzyvlBI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i2y9h7qOkf1f7VnADqYG2WSjrDhDbGEqMJCDxcSwXX60w1fwcAmUKxEycQekDpk5e bv0XV+0unadIQNZPTIyQWTdprwirq9MZoGeFQo86BiwfISGD3jceUmrtZBrc0yCCx4 wiAi3iuvowLpAaXiWeix1yiUftEFRUsFmQRtxbu2O0lmLPx+VxQIkGAl/fSWKCEPVv cXXi/Hx5BFi57mixw9O0pyFA3iBleysGq5MugTVQrOUZb3gzJKHjA5eXLRriaBZx4f QoOq7lJNL3uZkzYPjQiI4Mvt7SajWRLp/j/sRrLwpZhSv/AYgUGD82gLeDl/nrnaG8 A0bX08+5XhGJg== 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 5.15 07/10] ext4: fix uninitialized variable in ext4_inlinedir_to_tree Date: Sun, 28 Jul 2024 11:49:05 -0400 Message-ID: <20240728154927.2050160-7-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240728154927.2050160-1-sashal@kernel.org> References: <20240728154927.2050160-1-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 5.15.164 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 6fe665de1b203..bc7f6417888dc 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1446,7 +1446,11 @@ 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