diff -Naurp pcp-4.3.2-orig/src/pcp/atop/atop.c pcp-4.3.2/src/pcp/atop/atop.c

--- pcp-4.3.2-orig/src/pcp/atop/atop.c	2019-03-14 08:01:57.000000000 +1100

+++ pcp-4.3.2/src/pcp/atop/atop.c	2020-02-19 12:43:05.073078137 +1100

@@ -632,14 +632,12 @@ engine(void)

 		*/

 		if (nprocexit > 0)

 		{

-			curpexit = malloc(nprocexit * sizeof(struct tstat));

+			curpexit = calloc(nprocexit, sizeof(struct tstat));

 			ptrverify(curpexit,

 			          "Malloc failed for %lu exited processes\n",

 			          nprocexit);

-			memset(curpexit, 0, nprocexit * sizeof(struct tstat));

-

 			nprocexit = acctphotoproc(curpexit, nprocexit);

 			/*

diff -Naurp pcp-4.3.2-orig/src/pcp/atop/deviate.c pcp-4.3.2/src/pcp/atop/deviate.c

--- pcp-4.3.2-orig/src/pcp/atop/deviate.c	2019-03-08 08:26:34.000000000 +1100

+++ pcp-4.3.2/src/pcp/atop/deviate.c	2020-02-19 12:43:05.076078101 +1100

@@ -84,7 +84,7 @@ deviattask(struct tstat    *curtpres, un

 	** create list for the sample deviations of all tasks

 	*/

  	devtstat->ntaskall = ntaskpres + nprocexit;

-	devtstat->taskall  = malloc(devtstat->ntaskall * sizeof(struct tstat));

+	devtstat->taskall  = calloc(devtstat->ntaskall, sizeof(struct tstat));

 	ptrverify(devtstat->taskall, "Malloc failed for %lu deviated tasks\n",

                                   devtstat->ntaskall);

@@ -371,9 +371,9 @@ deviattask(struct tstat    *curtpres, un

 	/*

 	** create and fill other pointer lists

 	*/

-	devtstat->procall    = malloc(devtstat->nprocall *

+	devtstat->procall    = calloc(devtstat->nprocall,

 						sizeof(struct tstat *));

-	devtstat->procactive = malloc(devtstat->nprocactive *

+	devtstat->procactive = calloc(devtstat->nprocactive,

 						sizeof(struct tstat *));

 	ptrverify(devtstat->procall, "Malloc failed for %d processes\n",

diff -Naurp pcp-4.3.2-orig/src/pcp/atop/photoproc.c pcp-4.3.2/src/pcp/atop/photoproc.c

--- pcp-4.3.2-orig/src/pcp/atop/photoproc.c	2019-01-24 10:23:34.000000000 +1100

+++ pcp-4.3.2/src/pcp/atop/photoproc.c	2020-02-19 12:43:05.076078101 +1100

@@ -166,8 +166,10 @@ photoproc(struct tstat **tasks, unsigned

 		fprintf(stderr, "%s: done %lu processes\n", pmGetProgname(), count);

 	pmFreeResult(result);

-	free(insts);

-	free(pids);

+	if (count > 0) {

+	    free(insts);

+	    free(pids);

+	}

 	return count;

 }

diff -Naurp pcp-4.3.2-orig/src/pcp/atop/showlinux.c pcp-4.3.2/src/pcp/atop/showlinux.c

--- pcp-4.3.2-orig/src/pcp/atop/showlinux.c	2019-01-24 10:24:56.000000000 +1100

+++ pcp-4.3.2/src/pcp/atop/showlinux.c	2020-02-19 12:43:05.077078090 +1100

@@ -654,19 +654,22 @@ totalcap(struct syscap *psc, struct ssta

 		struct tstat 	*curstat = *(proclist+i);

 		count_t		nett_wsz;

-		psc->availnet += curstat->net.tcpssz;

-		psc->availnet += curstat->net.tcprsz;

-		psc->availnet += curstat->net.udpssz;

-		psc->availnet += curstat->net.udprsz;

-

-		if (curstat->dsk.wsz > curstat->dsk.cwsz)

-			nett_wsz = curstat->dsk.wsz -

-			           curstat->dsk.cwsz;

-		else

-			nett_wsz = 0;

+		if (curstat)

+		{

+			psc->availnet += curstat->net.tcpssz;

+			psc->availnet += curstat->net.tcprsz;

+			psc->availnet += curstat->net.udpssz;

+			psc->availnet += curstat->net.udprsz;

+

+			if (curstat->dsk.wsz > curstat->dsk.cwsz)

+				nett_wsz = curstat->dsk.wsz -

+					   curstat->dsk.cwsz;

+			else

+				nett_wsz = 0;

-		psc->availdsk += curstat->dsk.rsz;

-		psc->availdsk += nett_wsz;

+			psc->availdsk += curstat->dsk.rsz;

+			psc->availdsk += nett_wsz;

+		}

 	}

 	for (psc->availgpumem=i=0; i < sstat->gpu.nrgpus; i++)

@@ -985,8 +988,11 @@ pricumproc(struct sstat *sstat, struct d

         {

 		struct tstat *curstat = *(devtstat->procactive+i);

-                extra.totut	+= curstat->cpu.utime;

-                extra.totst 	+= curstat->cpu.stime;

+		if (curstat)

+		{

+			extra.totut	+= curstat->cpu.utime;

+			extra.totst 	+= curstat->cpu.stime;

+		}

         }

         extra.nproc	= devtstat->nprocall;