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| author | Martin Petermann <martin@linux.vnet.ibm.com> | 2009-04-17 15:08:01 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-04-27 10:07:15 -0500 |
| commit | 135ea137e3c2872448c12d3a8890389fa64990c6 (patch) | |
| tree | 017f0ca49ddf8a0e02d5aeaef1e6e9db924b8495 /drivers/s390 | |
| parent | b4efdd586bc08cdf5977cad0a90091f44546a930 (diff) | |
| download | linux-3.10-135ea137e3c2872448c12d3a8890389fa64990c6.tar.gz linux-3.10-135ea137e3c2872448c12d3a8890389fa64990c6.tar.bz2 linux-3.10-135ea137e3c2872448c12d3a8890389fa64990c6.zip | |
[SCSI] zfcp: Avoid referencing freed memory in req send
Avoid referencing a fsf request after sending it in fcp_fsf_req_send,
it might have already completed and deallocated.
Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index b29f3121b66..fa896dc600b 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -766,8 +766,9 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) { struct zfcp_adapter *adapter = req->adapter; - unsigned long flags; - int idx; + unsigned long flags; + int idx; + int with_qtcb = (req->qtcb != NULL); /* put allocated FSF request into hash table */ spin_lock_irqsave(&adapter->req_list_lock, flags); @@ -789,7 +790,7 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) } /* Don't increase for unsolicited status */ - if (req->qtcb) + if (with_qtcb) adapter->fsf_req_seq_no++; adapter->req_no++; |