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Commit 859bcad9 authored by Easwar Hariharan's avatar Easwar Hariharan Committed by Greg Kroah-Hartman
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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: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: default avatarEaswar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5cd24119

drivers/staging/rdma/hfi1/chip.c

+2 −0
Original line number Diff line number Diff line
@@ -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++) {