[SCSI] libfc: Don't assume response request present.
Fix NULL pointer dereference crash occurs in fc_lport_bsg_request() for bsg requests that do not contain a response request. Specifically, FC_BSG_HST_ADD_RPORT and FC_BSG_HST_DEL_RPORT bsg requests are not guaranteed to include a response request. Signed-off-by: Hugh Daschbach <hdasch@broadcom.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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@ -1800,7 +1800,8 @@ int fc_lport_bsg_request(struct fc_bsg_job *job)
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u32 did;
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job->reply->reply_payload_rcv_len = 0;
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rsp->resid_len = job->reply_payload.payload_len;
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if (rsp)
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rsp->resid_len = job->reply_payload.payload_len;
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mutex_lock(&lport->lp_mutex);
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