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author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2021-12-27 19:09:18 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-20 09:19:17 +0100 |
commit | c2f067d4ad4a57472cfa0018878a3c0cd7534d0c (patch) | |
tree | d5dfef68d7a2c529c7e2c70f252b383ec10d7019 /include/linux | |
parent | 5d6af67307e8f52b7c15da3567cbb92e285267d4 (diff) |
orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()
commit 40a74870b2d1d3d44e13b3b73c6571dd34f5614d upstream.
'buffer_index_array' really looks like a bitmap. So it should be allocated
as such.
When kzalloc is called, a number of bytes is expected, but a number of
longs is passed instead.
In get(), if not enough memory is allocated, un-allocated memory may be
read or written.
So use bitmap_zalloc() to safely allocate the correct memory size and
avoid un-expected behavior.
While at it, change the corresponding kfree() into bitmap_free() to keep
the semantic.
Fixes: ea2c9c9f6574 ("orangefs: bufmap rewrite")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions