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| author | Christophe Vu-Brugier <christophe.vu-brugier@seagate.com> | 2021-11-22 16:02:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-08 21:12:32 +0300 |
| commit | c9f727219f3e64b63e03e00dc0cf3d685c17f730 (patch) | |
| tree | 4face734f81537859434f31fa77901db8b4f5fea /Documentation | |
| parent | 1ffc130388c5065d491ca58fb41bc248fd63a2f5 (diff) | |
| download | linux-c9f727219f3e64b63e03e00dc0cf3d685c17f730.tar.xz | |
exfat: fix i_blocks for files truncated over 4 GiB
[ Upstream commit 92fba084b79e6bc7b12fc118209f1922c1a2df56 ]
In exfat_truncate(), the computation of inode->i_blocks is wrong if
the file is larger than 4 GiB because a 32-bit variable is used as a
mask. This is fixed and simplified by using round_up().
Also fix the same buggy computation in exfat_read_root() and another
(correct) one in exfat_fill_inode(). The latter was fixed another way
last month but can be simplified by using round_up() as well. See:
commit 0c336d6e33f4 ("exfat: fix incorrect loading of i_blocks for
large files")
Fixes: 98d917047e8b ("exfat: add file operations")
Cc: stable@vger.kernel.org # v5.7+
Suggested-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Christophe Vu-Brugier <christophe.vu-brugier@seagate.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions