Messages in this thread Patch in this message | | | From | Aditya Pakki <> | Subject | [PATCH] scsi: cxgb4i: Fix potential NULL pointer dereference | Date | Tue, 12 Mar 2019 11:47:58 -0500 |
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alloc_wr may fail and return NULL. The patch checks for such a scenario and avoids it.
Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index d44914e5e415..b4f1e00b9250 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -617,6 +617,8 @@ static inline int send_tx_flowc_wr(struct cxgbi_sock *csk) #endif flowclen16 = tx_flowc_wr_credits(&nparams, &flowclen); skb = alloc_wr(flowclen, 0, GFP_ATOMIC); + if (!skb) + return -ENOMEM; flowc = (struct fw_flowc_wr *)skb->head; flowc->op_to_nparams = htonl(FW_WR_OP_V(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS_V(nparams)); -- 2.17.1
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