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Pvm : Pvm analysis 1 : Null Pointer Dereference  at pvmd.c:3715

Categories: LANG.MEM.NPD CWE:476
Warning ID: 2742.2797
Procedure: sendmessage
Trace: View
Modified: Wed Sep 2 12:44:46 2009   show details
 
Priority: None
State: None
Finding: None
Owner: None
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Source  |  Language: C Hide Legend     
ProblemLineSource
   /u1/paul/SATE/2010/c/pvm/pvm3/src/tdpro.c
   Enter tm_context
 2825 tm_context(tp, mp) 
 2826         struct task *tp;
 2827         struct pmsg *mp;
 2828 {
 2829         struct pmsg *mp2;
 2830         struct ccon *cp;
 2831         int cid;
 2832         int cc;
 2833  
true2834         mp2 = replymessage(mp);
 2835         if (upkuint(mp, &cid)) {
 2836                 cc = PvmBadParam;
 2837  
 2838         } else {
 2839                 if (cid == 0) {
 2840                         if (cp = ccon_new(tp))
 2841                                 cc = cp->c_cid;
 2842                         else 
 2843                                 cc = PvmOutOfRes;
 2844  
 2845                 } else {
 2846                         cc = PvmNotFound;
 2847                         if (tp->t_ccs) {
 2848                                 FORLIST (cp, tp->t_ccs, c_peer) {
 2849                                         if (cp->c_cid == cid) {
 2850                                                 LISTDELETE(cp, c_link, c_rlink);
 2851                                                 LISTDELETE(cp, c_peer, c_rpeer);
 2852                                                 PVM_FREE(cp);
 2853                                                 cc = 0;
 2854                                                 break;
 2855                                         }
 2856                                 }
 2857                         }
 2858                 }
 2859         }
 2860         pkint(mp2, cc);
mp2 <= 40952861         sendmessage(mp2);
Preconditions
&$unknown_1207439 != 0
&$unknown_1207441 = 0
((char*)&((char*)*$param_1)[216])[16] != ((char*)$param_1)[216]
((char*)&((char*)((char*)*$param_1)[216])[16])[32] != &$unknown_1207439
((char*)&$unknown_1207440)[16] != ((char*)$param_1)[216]
numpmsgs = 0
Postconditions
((char*)&((char*)((char*)$unknown_1207440)[16])[16])[24]' = ((char*)&((char*)$unknown_1207440)[16])[24]
((char*)&((char*)((char*)$unknown_1207440)[16])[24])[16]' = ((char*)&((char*)$unknown_1207440)[16])[16]
((char*)((char*)$unknown_1207440)[16])[8]' = ((char*)&((char*)$unknown_1207440)[16])[8]
((char*)&((char*)$unknown_1207440)[16])[16]' = 0
((char*)&((char*)$unknown_1207440)[16])[24]' = 0
((char*)&((char*)$unknown_1207440)[16])[8]' = 0
((char*)((char*)$unknown_1207440)[16])[8]' = ((char*)$unknown_1207440)[16]
((char*)$unknown_1207440)[16]' = 0
((char*)$unknown_1207440)[16]' is freed
cc' = 0
cid' = &$unknown_1207439
cp' = ((char*)&$unknown_1207440)[16]
ff' = 1
freepmsgs.m_link' = &freepmsgs.m_link
freepmsgs.m_rlink' = &freepmsgs.m_link
hp' = 0
mp' = $param_2
mp' = 0
mp2' = 0
tp' = $param_1




Change Warning 2742.2797 : Null Pointer Dereference

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