From 859bcad9c2c5487dd74d4cfbdcbdd6c63a0ca955 Mon Sep 17 00:00:00 2001 From: Easwar Hariharan Date: Thu, 10 Dec 2015 11:13:38 -0500 Subject: [PATCH] staging/rdma/hfi1: Fix a possible null pointer dereference A code inspection pointed out that kmalloc_array may return NULL and memset doesn't check the input pointer for NULL, resulting in a possible NULL dereference. This patch fixes this. Reviewed-by: Mike Marciniszyn Signed-off-by: Easwar Hariharan Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rdma/hfi1/chip.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c index d88945a80250..371f13fec68d 100644 --- a/drivers/staging/rdma/hfi1/chip.c +++ b/drivers/staging/rdma/hfi1/chip.c @@ -13358,6 +13358,8 @@ static void init_qos(struct hfi1_devdata *dd, u32 first_ctxt) if (num_vls * qpns_per_vl > dd->chip_rcv_contexts) goto bail; rsmmap = kmalloc_array(NUM_MAP_REGS, sizeof(u64), GFP_KERNEL); + if (!rsmmap) + goto bail; memset(rsmmap, rxcontext, NUM_MAP_REGS * sizeof(u64)); /* init the local copy of the table */ for (i = 0, ctxt = first_ctxt; i < num_vls; i++) { -- 2.30.2