svn commit: r328020 - in head/sys/mips: mips nlm/dev/sec

[Pedro F. Giffuni]

Author: pfg
Date: Mon Jan 15 21:13:30 2018
New Revision: 328020
URL: https://svnweb.freebsd.org/changeset/base/328020

Log:
  mips: make some use of mallocarray(9).
  
  Focus on code where we are doing multiplications within malloc(9). None of
  these ire likely to overflow, however the change is still useful as some
  static checkers can benefit from the allocation attributes we use for
  mallocarray.
  
  This initial sweep only covers malloc(9) calls with M_NOWAIT. No good
  reason but I started doing the changes before r327796 and at that time it
  was convenient to make sure the sorrounding code could handle NULL values.
  
  X-Differential revision: https://reviews.freebsd.org/D13837

Modified:
  head/sys/mips/mips/busdma_machdep.c
  head/sys/mips/nlm/dev/sec/nlmrsa.c

Modified: head/sys/mips/mips/busdma_machdep.c
==============================================================================
--- head/sys/mips/mips/busdma_machdep.c	Mon Jan 15 21:11:38 2018	(r328019)
+++ head/sys/mips/mips/busdma_machdep.c	Mon Jan 15 21:13:30 2018	(r328020)
@@ -345,7 +345,8 @@ _busdma_alloc_dmamap(bus_dma_tag_t dmat)
 	struct sync_list *slist;
 	bus_dmamap_t map;
 
-	slist = malloc(sizeof(*slist) * dmat->nsegments, M_BUSDMA, M_NOWAIT);
+	slist = mallocarray(dmat->nsegments, sizeof(*slist), M_BUSDMA,
+	    M_NOWAIT);
 	if (slist == NULL)
 		return (NULL);
 	map = uma_zalloc_arg(dmamap_zone, dmat, M_NOWAIT);
@@ -534,9 +535,8 @@ bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_d
 	int error = 0;
 
 	if (dmat->segments == NULL) {
-		dmat->segments = (bus_dma_segment_t *)malloc(
-		    sizeof(bus_dma_segment_t) * dmat->nsegments, M_BUSDMA,
-		    M_NOWAIT);
+		dmat->segments = (bus_dma_segment_t *)malloc(dmat->nsegments,
+		    sizeof(bus_dma_segment_t), M_BUSDMA, M_NOWAIT);
 		if (dmat->segments == NULL) {
 			CTR3(KTR_BUSDMA, "%s: tag %p error %d",
 			    __func__, dmat, ENOMEM);
@@ -647,9 +647,8 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddrp, in
 	else
 		mflags = M_WAITOK;
 	if (dmat->segments == NULL) {
-		dmat->segments = (bus_dma_segment_t *)malloc(
-		    sizeof(bus_dma_segment_t) * dmat->nsegments, M_BUSDMA,
-		    mflags);
+		dmat->segments = (bus_dma_segment_t *)malloc(dmat->nsegments,
+		    sizeof(bus_dma_segment_t), M_BUSDMA, mflags);
 		if (dmat->segments == NULL) {
 			CTR4(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d",
 			    __func__, dmat, dmat->flags, ENOMEM);

Modified: head/sys/mips/nlm/dev/sec/nlmrsa.c
==============================================================================
--- head/sys/mips/nlm/dev/sec/nlmrsa.c	Mon Jan 15 21:11:38 2018	(r328019)
+++ head/sys/mips/nlm/dev/sec/nlmrsa.c	Mon Jan 15 21:13:30 2018	(r328020)
@@ -346,7 +346,7 @@ xlp_rsa_newsession(device_t dev, u_int32_t *sidp, stru
 
 		if (ses == NULL) {
 			sesn = sc->sc_nsessions;
-			ses = malloc((sesn + 1) * sizeof(*ses),
+			ses = mallocarray(sesn + 1, sizeof(*ses),
 			    M_DEVBUF, M_NOWAIT);
 			if (ses == NULL)
 				return (ENOMEM);
@@ -528,8 +528,9 @@ xlp_rsa_kprocess(device_t dev, struct cryptkop *krp, i
 		goto errout;
 	}
 	cmd->rsafn = 0; /* Mod Exp */
-	cmd->rsasrc = malloc(
-	    cmd->rsaopsize * (krp->krp_iparams + krp->krp_oparams),
+	cmd->rsasrc = mallocarray(
+	    krp->krp_iparams + krp->krp_oparams,
+	    cmd->rsaopsize,
 	    M_DEVBUF,
 	    M_NOWAIT | M_ZERO);
 	if (cmd->rsasrc == NULL) {