]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
btrfs: trim: Check the range passed into to prevent overflow
authorQu Wenruo <wqu@suse.com>
Tue, 28 May 2019 08:21:54 +0000 (16:21 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 6 Sep 2019 08:23:17 +0000 (10:23 +0200)
commita8bd4c018836bb3ecff3afe7faa642f26494aaea
treea531c62082591eb1f65514695d1a963a385130ef
parentc1b16e1427f41c3588a97154a27cf4d34b6f0ece
btrfs: trim: Check the range passed into to prevent overflow

[ Upstream commit 07301df7d2fc220d3de5f7ad804dcb941400cb00 ]

Normally the range->len is set to default value (U64_MAX), but when it's
not default value, we should check if the range overflows.

And if it overflows, return -EINVAL before doing anything.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/btrfs/extent-tree.c