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| author | Viswas G <Viswas.G@pmcs.com> | 2015-08-11 15:06:28 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-08-26 17:11:01 -0700 |
| commit | 3b700e341144f278b8248418991c086d09b7137b (patch) | |
| tree | f8db9c17cd3532956b4d433ca22ccd3a987469d0 /drivers/scsi | |
| parent | 842784e0d15bc21b31ce69f8f3518a8cf86084e3 (diff) | |
| download | talos-obmc-linux-3b700e341144f278b8248418991c086d09b7137b.tar.gz talos-obmc-linux-3b700e341144f278b8248418991c086d09b7137b.zip | |
pm80xx: Fix for Incorrect DMA Unmapping of SG List
In pm8001_ccb_task_free(), the dma unmapping is done based on
ccb->n_elem value. This should be initialized to zero in the
task_abort(). Otherwise, pm8001_ccb_task_free() will try for
dma_unmap_sg() which is invalid for task abort and can lead to
kernel crash.
Changes From V1:
None
Signed-off-by: Viswas G <Viswas.G@pmcs.com>
Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_sas.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index 48f4627e05a4..949198c01ced 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -790,6 +790,7 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, ccb->device = pm8001_dev; ccb->ccb_tag = ccb_tag; ccb->task = task; + ccb->n_elem = 0; res = PM8001_CHIP_DISP->task_abort(pm8001_ha, pm8001_dev, flag, task_tag, ccb_tag); |
