CodeSonar : Pvm : Uninitialized Variable

Pvm : Pvm analysis 1 : Uninitialized Variable at pvmgsu_core.c:367

Categories:	LANG.MEM.UVAR CWE:457
Warning ID:	2944.3027
Procedure:	pvm_bcast
Trace:	View
Modified:	Wed Sep 2 12:53:33 2009 show details hide details

Priority:	None
State:	None
Finding:	None
Owner:	None
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Analysis:

Pvm analysis 1

Analysis ID:

Started:

Wed Sep 2 12:31:44 2009 show details hide details

by user:	paul
on host:	green.grammatech.com
at address:	10.233.219.86

Finished:

Wed Sep 2 12:55:35 2009 show logs hide logs

build:	[Full] [Streamed Full] [Tail] [Streamed Tail]
codesonar parse:	[Full] [Streamed Full] [Tail] [Streamed Tail]
codesonar analysis:	[Full] [Streamed Full] [Tail] [Streamed Tail]

Analysis State:

Finished

Detected:

Wed Sep 2 12:53:33 2009

First Detected:

Wed Sep 2 12:53:33 2009

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

Show Legend Hide Legend

Problem	Line	Source

			/u1/paul/SATE/2010/c/pvm/pvm3/pvmgs/pvmgsu_core.c

			Enter pvm_bcast

true

338

pvm_bcast(group, msgtag)

x Problem
true

char *group;

int msgtag;

{

int bailout=0;

int cc;

int i;

int mytid;

int ntids;

int rbuf;

int sbuf;

int *tids = (int *) NULL;

x /usr/lib64/gcc/x86_64-suse-linux/4.3/include/stddef.h
403	#define NULL ((void *)0)

350

int x;

351

352

TEV_DECLS;

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
135	#define TEV_DECLS int pvmamtraced; \
136	int pvmampushed = 0; \
137	int pvmtoplvlsave;

353

354

BGN_TRACE ( TEV_BCAST , group , TEV_DID_MC , &msgtag );

x /u1/paul/SATE/2010/c/pvm/pvm3/pvmgs/pvmgs_mac.h
82	#define BGN_TRACE( event, strarg, did, intarg ) \
83	if ( TEV_EXCLUSIVE ) { \
84	if (TEV_DO_TRACE( event, TEV_EVENT_ENTRY ) ) \
85	{ \
86	TEV_PACK_STRING( TEV_DID_GN, TEV_DATA_SCALAR, \
87	strarg ? strarg: "", 1, 1 ); \
88	if ( intarg != (int *) NULL ) \
89	TEV_PACK_INT( did, TEV_DATA_SCALAR, intarg, 1, 1 ); \
90	TEV_FIN; \
91	} \
92	}

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
139	#define TEV_EXCLUSIVE ( (pvmamtraced = pvmtoplvl) != 0 \
140	&& (pvmtoplvl = 0) == 0 )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
130	#define TEV_DO_TRACE( _kind, _entry_exit ) \
131	( TEV_CHECK_TRACE( _kind ) && tev_begin( _kind, _entry_exit ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
124	#define TEV_CHECK_TRACE( _kind ) \
125	( !BEATASK && pvmtrc.trctid > 0 && pvmtrc.trctid != pvmmytid \
126	&& TEV_MASK_CHECK( pvmtrc.tmask, _kind ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
120	#define BEATASK ( pvmmytid == -1 ? pvmbeatask() : 0 )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
458	#define TEV_MASK_CHECK( m, k ) ( m[ (k) / 4 ] & ( 1 << ((k) & 3) ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
416	#define TEV_EVENT_ENTRY 0x4000

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
195	#define TEV_PACK_STRING( _did, _array, _datap, _cnt, _std ) \
196	(pvmtrccodef->enc_str)( _did, _array, \
197	(void *)(_datap), _cnt, _std )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
184	#define TEV_DID_GN 25

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
144	#define TEV_DATA_SCALAR 0x00

x /usr/lib64/gcc/x86_64-suse-linux/4.3/include/stddef.h
403	#define NULL ((void *)0)

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
171	#define TEV_PACK_INT( _did, _array, _datap, _cnt, _std ) \
172	(pvmtrccodef->enc_int)( _did, _array, \
173	(void *)(_datap), _cnt, _std )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
144	#define TEV_DATA_SCALAR 0x00

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
133	#define TEV_FIN tev_fin()

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
307	#define TEV_BCAST 2

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
204	#define TEV_DID_MC 45

355

	356		if ((cc = gs_get_tidlist(group, msgtag, &ntids, &tids, 0)) < 0)

					Enter pvm_bcast / gs_get_tidlist

659

gs_get_tidlist(group, msgtag, ntids, tids, holes_not_allowed)

char *group;

int msgtag;

int *ntids;

int **tids;

int holes_not_allowed;

{

int cc;

int i;

int len;

int rbuf;

int sbuf, state, stid;

671

int savectx;

672

673

GROUP_STRUCT_PTR sgroup;

674

675

if ( group == (char*)0 || *group == '\0' )

676

return(PvmNullGroup);

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvm3.h
461	#define PvmNullGroup -17 /* Null group name */

677

678

/* look up to see if the information is held locally */

679

680

sgroup = gs_group(group, sgroup_list, &ngroups, NOCREATE );

x /u1/paul/SATE/2010/c/pvm/pvm3/pvmgs/pvmgs_const.h
72	#define NOCREATE 0

681

682

if (sgroup != (GROUP_STRUCT_PTR) NULL)

x /usr/lib64/gcc/x86_64-suse-linux/4.3/include/stddef.h
403	#define NULL ((void *)0)

683

{

684

if (holes_not_allowed)

685

{

686

for (i=0; i < sgroup->ntids; i++)

687

if (sgroup->tids[i] == NOTID)

x /u1/paul/SATE/2010/c/pvm/pvm3/pvmgs/pvmgs_const.h
73	#define NOTID -1 /* indicates no tid */

{

*ntids = -1;

return (*ntids);

}

}

...

695

696

for (i = 0; i < sgroup->maxntids; i++)

697

(*tids)[i] = sgroup->tids[i]; /* Null Pointer Dereference (ID: 2942.3025) */

698

699

*ntids = sgroup->ntids;

700

701

return (PvmOk);

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvm3.h
448	#define PvmOk 0 /* Success */

702

}

703

704

/* find out the server's tid, start the server if need be */

705

if ( (stid = gs_getgstid()) < 0 )

706

return(PvmSysErr);

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvm3.h
458	#define PvmSysErr -14 /* Can't contact local daemon */

707

708

sbuf = pvm_mkbuf(PvmDataDefault ); /* send rqst to server */

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvm3.h
312	#define PvmDataDefault 0 /* XDR encoding */

709

710

sbuf = pvm_setsbuf(sbuf );

711

712

rbuf = pvm_setrbuf(0);

pvm_pkstr(group );

/* set context for dynamic groups */

...

768

pvm_upkint(&state,1,1);

769

770

if (state == STATIC) /* we've got new static group info */ /* Uninitialized Variable (ID: 2941.3024) */

x /u1/paul/SATE/2010/c/pvm/pvm3/pvmgs/pvmgs_const.h
74	#define STATIC 1 /* indicate a group is static */

771

gs_cachegroup(sgroup_list, &ngroups, &sgroup );

772

773

pvm_freebuf(pvm_setsbuf(sbuf )); /* restore the users mbufs */

774

775

pvm_freebuf(pvm_setrbuf(rbuf ));

776

777

return(PvmOk);

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvm3.h
448	#define PvmOk 0 /* Success */

ntids is uninitialized

778

}

x Problem
ntids is uninitialized

					Exit pvm_bcast / gs_get_tidlist

	357		bailout = 1;
	358

	359		if ((mytid = pvm_mytid()) < 0 && ! bailout)

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

					Enter pvm_bcast / pvm_mytid

{

int cc;

char **ep=0;

TEV_DECLS;

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
135	#define TEV_DECLS int pvmamtraced; \
136	int pvmampushed = 0; \
137	int pvmtoplvlsave;

if (TEV_EXCLUSIVE) {

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
139	#define TEV_EXCLUSIVE ( (pvmamtraced = pvmtoplvl) != 0 \
140	&& (pvmtoplvl = 0) == 0 )

2371

if (TEV_DO_TRACE (TEV_MYTID ,TEV_EVENT_ENTRY ))

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
130	#define TEV_DO_TRACE( _kind, _entry_exit ) \
131	( TEV_CHECK_TRACE( _kind ) && tev_begin( _kind, _entry_exit ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
124	#define TEV_CHECK_TRACE( _kind ) \
125	( !BEATASK && pvmtrc.trctid > 0 && pvmtrc.trctid != pvmmytid \
126	&& TEV_MASK_CHECK( pvmtrc.tmask, _kind ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
120	#define BEATASK ( pvmmytid == -1 ? pvmbeatask() : 0 )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
458	#define TEV_MASK_CHECK( m, k ) ( m[ (k) / 4 ] & ( 1 << ((k) & 3) ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
331	#define TEV_MYTID 26

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
416	#define TEV_EVENT_ENTRY 0x4000

2372

TEV_FIN;

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
133	#define TEV_FIN tev_fin()

2373

}

2374

2375

if (!(cc = BEATASK))

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
120	#define BEATASK ( pvmmytid == -1 ? pvmbeatask() : 0 )

2376

cc = pvmmytid;

2377

2378

if (TEV_AMEXCL) {

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
141	#define TEV_AMEXCL pvmamtraced

2379

if (TEV_DO_TRACE (TEV_MYTID ,TEV_EVENT_EXIT )) {

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
130	#define TEV_DO_TRACE( _kind, _entry_exit ) \
131	( TEV_CHECK_TRACE( _kind ) && tev_begin( _kind, _entry_exit ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
124	#define TEV_CHECK_TRACE( _kind ) \
125	( !BEATASK && pvmtrc.trctid > 0 && pvmtrc.trctid != pvmmytid \
126	&& TEV_MASK_CHECK( pvmtrc.tmask, _kind ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
120	#define BEATASK ( pvmmytid == -1 ? pvmbeatask() : 0 )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
458	#define TEV_MASK_CHECK( m, k ) ( m[ (k) / 4 ] & ( 1 << ((k) & 3) ) )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
331	#define TEV_MYTID 26

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
417	#define TEV_EVENT_EXIT 0x8000

2380

TEV_PACK_INT( TEV_DID_MT, TEV_DATA_SCALAR, &cc, 1, 1 );

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
171	#define TEV_PACK_INT( _did, _array, _datap, _cnt, _std ) \
172	(pvmtrccodef->enc_int)( _did, _array, \
173	(void *)(_datap), _cnt, _std )

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
249	#define TEV_DID_MT 90

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvmtev.h
144	#define TEV_DATA_SCALAR 0x00

2381

TEV_FIN;

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
133	#define TEV_FIN tev_fin()

2382

}

2383

TEV_ENDEXCL;

x /u1/paul/SATE/2010/c/pvm/pvm3/src/tevmac.h
142	#define TEV_ENDEXCL ( pvmtoplvl = pvmamtraced )

}

if (cc < 0)

lpvmerr("pvm_mytid", cc );

2388

return cc;

ntids is uninitialized

2389

}

x Problem
ntids is uninitialized

					Exit pvm_bcast / pvm_mytid

360

{

361

pvm_perror("pvm_bcast");

362

cc = PvmSysErr;

x /u1/paul/SATE/2010/c/pvm/pvm3/include/pvm3.h
458	#define PvmSysErr -14 /* Can't contact local daemon */

bailout = 1;

}

/* if I'm the only one in the group */

ntids is uninitialized

367

if ((ntids == 1) && (tids[0] == mytid ) && ! bailout) /* Uninitialized Variable */ /* Null Pointer Dereference (ID: 2943.3026) */

x Problem
ntids is uninitialized

Preconditions

&$unknown_3467775 != 0
&$unknown_3467777 = 1
strlen($param_1) > 0
pvmmytid = -1
pvmtoplvl != 0
pvmtrc.trctid >= 1
pvmtrc.trcopt != 1
pvmtrc.trcopt != 2
pvmtrc.trcopt != 3

Postconditions

*stderr' is allocated by fopen
bytes_before(stderr)' = 0
bailout' = &$unknown_3467777
cc' = -14
group' = $param_1
mytid' <= -1
pvmampushed' = 0
pvmamtraced' = pvmtoplvl
pvmautoerr' != 2
pvmautoerr' != 3
pvmautoerr' != 0
pvmtoplvl' = 0
tids' = 0

Change Warning 2944.3027 : Uninitialized Variable

Priority:
State:
Finding:
Owner:
Note: