diff options
| author | Colin Ian King | 2017-11-06 17:53:53 +0000 |
|---|---|---|
| committer | Jens Axboe | 2017-11-10 19:55:57 -0700 |
| commit | f0fba398fec65ff5a2e1bf8ae62718ec0450abaf (patch) | |
| tree | 6bfdf6ba484c60c1223ee24ef04f426480cc71c9 /include/linux/sem.h | |
| parent | 67f2519fe2903c4041c0e94394d14d372fe51399 (diff) | |
block: avoid null pointer dereference on null disk
It is possible that the pointer disk can be null and hence
we can get a null pointer deference when accessing disk->flags.
Add a null pointer check to avoid the dereference.
Detected by CoverityScan, CID#1461133 ("Explicit null dereferenced")
Fixes: 8ddcd653257c ("block: introduce GENHD_FL_HIDDEN")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/sem.h')
0 files changed, 0 insertions, 0 deletions