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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-04 19:04:26 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-11-05 13:01:42 +0100 |
| commit | a1fbc6750e212c5675a4e48d7f51d44607eb8756 (patch) | |
| tree | 93877e687ca82da0c30915921bdccee66f6ebf22 /fs/btrfs/dev-replace.c | |
| parent | d5c8238849e7bae6063dfc16c08ed62cee7ee688 (diff) | |
btrfs: fix potential overflow in cluster_pages_for_defrag on 32bit arch
On 32-bit systems, this shift will overflow for files larger than 4GB as
start_index is unsigned long while the calls to btrfs_delalloc_*_space
expect u64.
CC: stable@vger.kernel.org # 4.4+
Fixes: df480633b891 ("btrfs: extent-tree: Switch to new delalloc space reserve and release")
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Sterba <dsterba@suse.com>
[ define the variable instead of repeating the shift ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions