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 63E9E1DFE0F; Sun, 24 Nov 2024 13:48:14 +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=1732456094; cv=none; b=oDJO3meAzb5XC2x1C6gtIn8onbSWby99wMBQ2kepCsaaWu+u10OxUcwW2r57VRRqFRNzHhRzpVmYW3l3gcwCvaXHvURcroWq5JHgKtj90elkHLeZ59wjsBeBhez4/q0nJpz3SoI+KWIea7WDtiSHmFzypy816gC/46760uCxdvA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732456094; c=relaxed/simple; bh=7SeF0gTH/JLCX/yvCisAO4zHQS3KiWhTn9A9Mtcwta8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Bzj1fXDV0o4vGmussle1UURNmWbphQxRRIY764xzfrNa4YRgtoErf3o9XLlmESU796oPBXQxl3Qz9kkLk1NchSgzqYOjUxOkOJSpIVE8CKbJssmg4UWBu58PEmmVJhB09myv6Kz03OgTAvRBn+KR+b6fjHvtPfCi8qmIGZaeVpk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VLcUcb2W; 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="VLcUcb2W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEB69C4CECC; Sun, 24 Nov 2024 13:48:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732456094; bh=7SeF0gTH/JLCX/yvCisAO4zHQS3KiWhTn9A9Mtcwta8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VLcUcb2Woa8Do/ufm/OaiC/BdupJUDo2k/+t9qqDAHsb26ijmIX6h30PpUXCsFxqY rq6oolX2T+X1Bm/ehahk1fusd2j6K4xFZfLM5+NiKT3t63aKfZ/3dCEsD0/70jrIU9 L3dx8zcCIGydJE81Gey4bgNevLTJy9/WVbKzjGx828GAPPNUhCfKqX6MSwqSnJX8Zm MQWPaxdbTi0b8FDNA3WX3O7SFe9eP5xS9s2f+2sWrHYATDiIaucQBaoL1R4CSHEtgD 6OShTpTyN8EmHhMjKZhQXLvhdYmXL983/7Dlc6/x0jD8cxf/bNsST6AzDu/RpKwjy+ Q9B7IBvxqVKZQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ghanshyam Agrawal , syzbot+b5ca8a249162c4b9a7d0@syzkaller.appspotmail.com, Dave Kleikamp , Sasha Levin , shaggy@kernel.org, rbrasga@uci.edu, aha310510@gmail.com, niharchaithanya@gmail.com, eadavis@qq.com, peili.dev@gmail.com, jfs-discussion@lists.sourceforge.net Subject: [PATCH AUTOSEL 6.6 39/61] jfs: fix shift-out-of-bounds in dbSplit Date: Sun, 24 Nov 2024 08:45:14 -0500 Message-ID: <20241124134637.3346391-39-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241124134637.3346391-1-sashal@kernel.org> References: <20241124134637.3346391-1-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 6.6.63 Content-Transfer-Encoding: 8bit From: Ghanshyam Agrawal [ Upstream commit a5f5e4698f8abbb25fe4959814093fb5bfa1aa9d ] When dmt_budmin is less than zero, it causes errors in the later stages. Added a check to return an error beforehand in dbAllocCtl itself. Reported-by: syzbot+b5ca8a249162c4b9a7d0@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b5ca8a249162c4b9a7d0 Signed-off-by: Ghanshyam Agrawal Signed-off-by: Dave Kleikamp Signed-off-by: Sasha Levin --- fs/jfs/jfs_dmap.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index 3ab410059dc20..39957361a7eed 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -1820,6 +1820,9 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results) return -EIO; dp = (struct dmap *) mp->data; + if (dp->tree.budmin < 0) + return -EIO; + /* try to allocate the blocks. */ rc = dbAllocDmapLev(bmp, dp, (int) nblocks, l2nb, results); -- 2.43.0