CodeSonar : pvm3.4.6 : Null Pointer Dereference

pvm3.4.6 : pvm3.4.6 analysis 2 : Null Pointer Dereference at tdpro.c:1581

Categories:	LANG.MEM.NPD CWE:476
Warning ID:	292.28967
Procedure:	tm_task
Trace:	view
Modified:	Thu Nov 26 11:29:17 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

			/kat0/fletcher/SATE/2010/pvm3/src/tdpro.c

			Enter tm_task

tm_task(tp, mp)

struct task *tp;

struct pmsg *mp;

{

int where;

struct pmsg *mp2;

struct waitc *wp;

struct waitc *wp2 = 0; /* master waitc of peer group */

int hh;

struct hostd *hp;

if (upkuint(mp, &where )) {

1560

pvmlogerror("tm_task() bad msg format\n");

return 0;

}

mp = replymessage (mp );

1565

mp->m_dst = tp->t_tid; /* Null Pointer Dereference (ID: 294.28969) */

1566

mp->m_tag = TM_TASK;

1567

1568

if (where) { /* specific host or task requested */

1569

if (!(hp = tidtohost (hosts, where ))) {

1570

pkint(mp, PvmNoHost );

sendmessage(mp );

return 0;

}

pkint(mp, 0);

wp = wait_new (WT_TASK );

1576

wp->wa_mesg = mp;

1577

wp->wa_tid = tp->t_tid;

1578

wp->wa_on = hp->hd_hostpart;

mp = mesg_new (0);

mp->m_tag = DM_TASK; /* Null Pointer Dereference */

Preconditions

&$unknown_959192 != 0
hosts->ht_last >= 1
waitlist->wa_wid <= widbase
waitlist->wa_link != waitlist
numfrags = 0
numpmsgs = 1
widrange <= lastwid

Postconditions

freepmsgs.m_link->m_link->m_rlink' = freepmsgs.m_link->m_rlink
((char*)**$unknown_959195)[4]' = &$heap_333289
freepmsgs.m_link->m_rlink->m_link' = freepmsgs.m_link->m_link
((char*)$unknown_959190)[4]' = &$unknown_959191
$unknown_959191' = &freefrags.fr_link
((char*)&$unknown_959191)[4]' = ((char*)&$unknown_959190)[4]
errno' != 0
freefrags.fr_link' = &$unknown_959191 - 48
freefrags.fr_rlink' = &$unknown_959191
freepmsgs.m_link' = &freepmsgs.m_link
freepmsgs.m_rlink' = &freepmsgs.m_link
bytes_after(&$heap_333289)' = 48
$heap_333289' is allocated by malloc
$heap_333289' is allocated
bytes_before(&$heap_333289)' = 0
((char*)&$heap_333289)[20]' = tp->t_tid
((char*)&$heap_333289)[24]' = 0
((char*)&$heap_333289)[32]' = &$heap_333289
((char*)&$heap_333289)[36]' = freepmsgs.m_link
((char*)&$heap_333289)[40]' = 0
((char*)&$heap_333289)[4]' = ((char*)*$unknown_959195)[4]
((char*)&$heap_333289)[44]' = 0
((char*)&$heap_333289)[8]' = widbase + 1
((char*)&$heap_333289)[12]' = 4
hp' = &$unknown_959193
lastwid' = 1
mp' = 0
numfrags' = 499
numpmsgs' = numpmsgs - 1
where' = &$unknown_959192
wp' = &$heap_333289
wp2' = 0

Change Warning 292.28967 : Null Pointer Dereference

Priority:
State:
Finding:
Owner:
Note: