diff options
| author | Andreas Hindborg <a.hindborg@samsung.com> | 2024-06-03 21:26:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-07-25 09:50:43 +0200 |
| commit | 08f03186b96e25e3154916a2e70732557c770ea7 (patch) | |
| tree | 15b443063abb937cb632d828ad801dba788a6f09 /scripts | |
| parent | 69a978c7fe2f7e3a13c3b73eede820b8eda0d793 (diff) | |
| download | linux-08f03186b96e25e3154916a2e70732557c770ea7.tar.gz linux-08f03186b96e25e3154916a2e70732557c770ea7.tar.bz2 linux-08f03186b96e25e3154916a2e70732557c770ea7.zip | |
null_blk: fix validation of block size
[ Upstream commit c462ecd659b5fce731f1d592285832fd6ad54053 ]
Block size should be between 512 and PAGE_SIZE and be a power of 2. The current
check does not validate this, so update the check.
Without this patch, null_blk would Oops due to a null pointer deref when
loaded with bs=1536 [1].
Link: https://lore.kernel.org/all/87wmn8mocd.fsf@metaspace.dk/
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240603192645.977968-1-nmi@metaspace.dk
[axboe: remove unnecessary braces and != 0 check]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions