CodeSonar : Pvm : Null Pointer Dereference

Pvm : Pvm analysis 1 : Null Pointer Dereference at lpvm.c:1240

Categories:	LANG.MEM.NPD CWE:476
Warning ID:	2826.2886
Procedure:	pvm_tc_conreq
Trace:	View
Modified:	Wed Sep 2 12:48:57 2009 show details hide details

Priority:	None
State:	None
Finding:	None
Owner:	None
	edit properties

Legend	[ X ]
Warning Location Contributes Parse Error Other Warning Two or More Loop Iterations On Execution Path Comment Macro Preprocessor Include Keyword Preprocessed Away

Legend
Warning Location	Contributes	Parse Error
Other Warning	Two or More Loop Iterations	On Execution Path
Comment	Macro	Preprocessor
Include	Keyword	Preprocessed Away

Source | Language: C

Hide Legend

Problem	Line	Source

			/u1/paul/SATE/2010/c/pvm/pvm3/src/lpvm.c

			Enter pvm_tc_conreq

pvm_tc_conreq(mid)

int mid;

{

int src; /* sender of request */

1136

int sbf = 0; /* reply message mid */

1137

int ttpro; /* protocol revision */

1138

struct ttpcb *pcbp; /* pcb for connection */

1139

int ackd; /* allow connection (0) */

1140

char *addr = ""; /* socket address */

int i;

int ictx;

#ifdef SOCKLENISUINT

#if defined(IMA_AIX4SP2) || defined(IMA_AIX5SP2)

unsigned int oslen;

#else

size_t oslen;

#endif

#else

int oslen;

#endif

#ifndef NOUNIXDOM

struct sockaddr_un uns;

1154

char spath[PVMTMPNAMLEN];

#endif

char buf[256];

pvm_bufinfo(mid, (int *)0, (int *)0, &src );

1159

1160

pvm_upkint(&ttpro, 1, 1);

1161

pvm_upkstr(buf );

1162

1163

if (pcbp = ttpcb_find (src )) { /* Uninitialized Variable (ID: 2827.2888) */

1164

if (pvmdebmask & PDMROUTE) {

1165

pvmlogprintf(

1166

"pvm_tc_conreq() crossed CONREQ from t%x\n", src );

1167

}

1168

if (pcbp->tt_state == TTCONWAIT) {

1169

1170

/* must handle simultaneous connect from both ends:

1171

* lower tid of the two just ignores the CONREQ.

1172

* higher tid pretends it didn't send a CONREQ,

1173

* sends a CONACK back.

...

1214

pvm_freebuf(pvm_setsbuf(sbf ));

}

}

} else {

pvmlogprintf(

"pvm_tc_conreq() CONREQ from t%x but state=%d ?\n",

1221

src, pcbp->tt_state );

}

} else {

if (pvmdebmask & PDMROUTE)

1226

pvmlogprintf("pvm_tc_conreq() CONREQ from t%x\n", src );

1227

ackd = 1;

true

1228

pcbp = ttpcb_creat (src );

1229

if (pvmrouteopt != PvmDontRoute) {

1230

if (buf[0] == '/') { /* Uninitialized Variable (ID: 2825.2887) */

#ifdef NOUNIXDOM

pvmlogprintf( "%s CONREQ from t%x, ",

1235

"pvm_tc_conreq()", src );

1236

pvmlogprintf( "Unix domain socket unsupported\n" );

#else /*NOUNIXDOM*/

if ((pcbp->tt_fd = socket(AF_UNIX, SOCK_STREAM, 0)) /* Null Pointer Dereference */

Preconditions

&$unknown_2315296 != 0
&$unknown_2315300 = 47
strlen(&buf[0]) != 0
pvmrouteopt != 1
pvmtoplvl != 0

Postconditions

*stderr' is allocated by fopen
bytes_before(stderr)' = 0
ackd' = 1
addr' = &#string5[0]
buf[0]' = &$unknown_2315300
errno' != 0
mid' = $param_1
pcbp' = 0
pvmrbuf' = &$unknown_2315296
pvmtrc.trctid' >= 1
sbf' = 0
ttlist' = &$unknown_2315297

Change Warning 2826.2886 : Null Pointer Dereference

Priority:
State:
Finding:
Owner:
Note: