CodeSonar : pvm3.4.6 : Null Pointer Dereference

Categories:	LANG.MEM.NPD CWE:476
Warning ID:	150.28773
Procedure:	dm_task
Trace:	view
Modified:	Thu Nov 26 11:27:51 2009 show details hide details

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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

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Problem	Line	Source

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

			Enter dm_task

	2409		dm_task(hp, mp)
	2410		struct hostd *hp;
	2411		struct pmsg *mp;
	2412		{
	2413		struct task *tp;
	2414		struct pmsg *mp2;
	2415		int where;
	2416
	2417		hp = hp;
	2418
	2419		if (upkuint(mp, &where )) {
	2420		pvmlogerror("dm_task() bad msg format\n");
	2421		return 0;
	2422		}
	2423
	2424		#ifdef SHMEM
	2425		mpp_setstatus(0); /* get status from global info table */
	2426		#endif
	2427
	2428		/* pack list of local tasks and reply to waiter */
	2429

mp2 = mesg_new (0);

mp2->m_dst = mp->m_src; /* Null Pointer Dereference */

Preconditions

numpmsgs = 0

Postconditions

errno' != 0
freepmsgs.m_link' = &freepmsgs.m_link
freepmsgs.m_rlink' = &freepmsgs.m_link
mp2' = 0