diff options
| author | Ming Lei <[email protected]> | 2019-07-12 10:08:19 +0800 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2019-07-16 22:39:24 -0400 |
| commit | f9b0530fa02e0c73f31a49ef743e8f44eb8e32cc (patch) | |
| tree | ca8a8951347a3b5bbba448d80269476271ed064b /scripts/gcc-plugins | |
| parent | 0cdc58580b37a160fac4b884266b8b7cb096f539 (diff) | |
scsi: core: Fix race on creating sense cache
When scsi_init_sense_cache(host) is called concurrently from different
hosts, each code path may find that no cache has been created and
allocate a new one. The lack of locking can lead to potentially
overriding a cache allocated by a different host.
Fix the issue by moving 'mutex_lock(&scsi_sense_cache_mutex)' before
scsi_select_sense_cache().
Fixes: 0a6ac4ee7c21 ("scsi: respect unchecked_isa_dma for blk-mq")
Cc: Stable <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Ewan D. Milne <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins')
0 files changed, 0 insertions, 0 deletions