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| author | Jayamohan Kallickal <jayamohank@gmail.com> | 2013-09-28 15:35:39 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-10-25 09:58:04 +0100 |
| commit | e074d20f9bce54f64dcb43eb2772fde4a4d68171 (patch) | |
| tree | d7777d244b9c1980c7e9526d8c41325acea39e17 /drivers/scsi/be2iscsi | |
| parent | 15a90fe05c91d15ac46b68e3644e5f9f1bb51917 (diff) | |
| download | kernel-common-e074d20f9bce54f64dcb43eb2772fde4a4d68171.tar.gz kernel-common-e074d20f9bce54f64dcb43eb2772fde4a4d68171.tar.bz2 kernel-common-e074d20f9bce54f64dcb43eb2772fde4a4d68171.zip | |
[SCSI] be2iscsi: Fix the MCCQ count leakage
When MBX CMD is posted in MCCQ and if command times out,during
mccq resource cleanup for the timed out command mccq->count
was not decremented. The led to BUG_ON being hit.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/be2iscsi')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_cmds.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c index bb70dcb493c6..f7788e59c3f2 100644 --- a/drivers/scsi/be2iscsi/be_cmds.c +++ b/drivers/scsi/be2iscsi/be_cmds.c @@ -174,6 +174,10 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba, BEISCSI_LOG_CONFIG, "BC_%d : MBX Cmd Completion timed out\n"); rc = -EAGAIN; + + /* decrement the mccq used count */ + atomic_dec(&phba->ctrl.mcc_obj.q.used); + goto release_mcc_tag; } else rc = 0; @@ -699,7 +703,7 @@ struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba) struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; struct be_mcc_wrb *wrb; - BUG_ON(atomic_read(&mccq->used) >= mccq->len); + WARN_ON(atomic_read(&mccq->used) >= mccq->len); wrb = queue_head_node(mccq); memset(wrb, 0, sizeof(*wrb)); wrb->tag0 = (mccq->head & 0x000000FF) << 16; |