]> git.baikalelectronics.ru Git - kernel.git/commit
3w-sas: fix command completion race
authorChristoph Hellwig <hch@lst.de>
Thu, 23 Apr 2015 07:48:49 +0000 (09:48 +0200)
committerJames Bottomley <JBottomley@Odin.com>
Mon, 27 Apr 2015 17:04:39 +0000 (10:04 -0700)
commita1dc2ea5fd272b8affc3855908ac1f5db938b321
tree0596feafadf90a837647d3e1b473c41b9fbecbac
parentb88b6c185d6a149467a5c13c33c1bc3d86ca293e
3w-sas: fix command completion race

The 3w-sas driver needs to tear down the dma mappings before returning
the command to the midlayer, as there is no guarantee the sglist and
count are valid after that point.  Also remove the dma mapping helpers
which have another inherent race due to the request_id index.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Torsten Luettgert <ml-lkml@enda.eu>
Tested-by: Bernd Kardatzki <Bernd.Kardatzki@med.uni-tuebingen.de>
Cc: stable@vger.kernel.org
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
drivers/scsi/3w-sas.c
drivers/scsi/3w-sas.h