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pvm3.4.6 : pvm3.4.6 analysis 2 : Null Pointer Dereference  at pvmd.c:5392

Categories: LANG.MEM.NPD CWE:476
Warning ID: 22082.28919
Procedure: master_config
Trace: view
Modified: Thu Nov 26 11:28:38 2009   show details
 
Priority: None
State: None
Finding: None
Owner: None
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Two or More Loop Iterations
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Source  |  Language: C Hide Legend     
ProblemLineSource
   /kat0/fletcher/SATE/2010/pvm3/src/pvmd.c
   Enter master_config
 5317 master_config(hn, argc, argv) 
 5318         char *hn;                       /* hostname or null */ 
 5319         int argc;
 5320         char **argv;
 5321 {
 5322         struct hostent *he;
 5323         struct hostd *hp;
 5324         struct hostd *hp2;
 5325         int i;
 5326         char *s;
 5327  
 5328         if (argc > 2) {
 5329                 pvmlogerror("usage: pvmd3 [-ddebugmask] [-nhostname] [hostfile]\n");
 5330                 pvmbailout(0);
 5331         }
 5332         if (argc == 2) {
 5333                 filehosts = readhostfile(argv[1]);
 5334         }
 5335         else if (s = getenv("PVMHOSTFILE")) {
 5336                 filehosts = readhostfile(s);
 5337         }
 5338         if (pvmdebmask & PDMSTARTUP) {
 5339                 if (filehosts) {
 5340                         pvmlogerror("master_config() host file:\n");
 5341                         ht_dump(filehosts);
 5342  
 5343                 } else 
 5344                         pvmlogerror("master_config() null host file\n");
 5345         }
 5346  
 5347         hosts = ht_new(1);
 5348         hosts->ht_serial = 1;
 5349         hosts->ht_master = 1;
 5350         hosts->ht_cons = 1;
 5351         hosts->ht_local = 1;
 5352  
 5353         hp = hd_new(1);
 5354         hp->hd_name = STRALLOC(hn);   /* Null Pointer Dereference (ID: 265.28929) */
 5355         hp->hd_arch = STRALLOC(myarchname);   /* Null Pointer Dereference (ID: 263.28928) */
 5356         hp->hd_mtu = pvmudpmtu;
 5357         hp->hd_dsig = pvmmydsig;
 5358         ht_insert(hosts, hp);
 5359         hd_unref(hp);
 5360  
 5361         hp = hd_new(0);
 5362         hp->hd_name = STRALLOC("pvmd'");   /* Null Pointer Dereference (ID: 264.28927) */
 5363         hp->hd_arch = STRALLOC(myarchname);   /* Null Pointer Dereference (ID: 263.28925) */
 5364         hp->hd_mtu = pvmudpmtu;
 5365         hp->hd_dsig = pvmmydsig;
 5366         ht_insert(hosts, hp);
 5367         hd_unref(hp);
 5368  
 5369         /*
 5370         * get attributes from host file if available 
 5371         */ 
 5372  
 5373         hp = hosts->ht_hosts[1];
 5374         if (filehosts &&
 5375                         ((hp2 = nametohost(filehosts, hp->hd_name)) 
 5376                         || (hp2 = filehosts->ht_hosts[0]))) {
 5377                 applydefaults(hp, hp2);
 5378         }
 5379  
 5380         if (!hp->hd_epath) {
 5381                 if ((s = getenv("PVM_PATH")))
 5382                         hp->hd_epath = STRALLOC(s);   /* Null Pointer Dereference (ID: 22087.28924) */
 5383                 else 
 5384                         hp->hd_epath = STRALLOC(DEFBINDIR);   /* Null Pointer Dereference (ID: 22086.28923) */
 5385         }
 5386         epaths = colonsep(varsub(hp->hd_epath));
 5387         if (!hp->hd_bpath)
 5388                 hp->hd_bpath = STRALLOC(DEFDEBUGGER);   /* Null Pointer Dereference (ID: 22083.28920) */
 5389         debugger = varsub(hp->hd_bpath);
 5390         if (!hp->hd_wdir) {
 5391                 if ((s = getenv("PVM_WD")))
true5392                         hp->hd_wdir = STRALLOC(s);     /* Null Pointer Dereference */
Preconditions
argc <= 1
((char*)&((char*)$unknown_761723)[4])[32] = 0
((char*)((char*)$unknown_761723)[4])[8] <= 46
$unknown_761725 != 0
strlen(&$unknown_761725) != 0
((char*)&$heap_207611)[4] <= 1
((char*)&$heap_207613)[20] != 0
((char*)&$heap_207613)[96] >= 0
$input_12 >= 0
$input_122532 >= 0
Postconditions
((char*)&((char*)$unknown_761723)[4])[24]' = &$unknown_761725
((char*)&((char*)$unknown_761723)[4])[28]' = &$heap_207627
((char*)&((char*)$unknown_761723)[4])[116]' = &$heap_207625
((char*)$heap_207613)[20]' is freed
$unknown_761726' is allocated by malloc
epaths' = &$heap_207626
errno' != 0
filehosts' = &$unknown_761722
$heap_207609' = $input_444
bytes_after(&$heap_207609)' = $input_12 + 1
$heap_207609' is allocated by malloc
$heap_207609' is a non-heap object
bytes_before(&$heap_207609)' = 0
strlen(&$heap_207609)' = $input_12
$heap_207611' = 1
bytes_after(&$heap_207611)' = 32
$heap_207611' is allocated by malloc
$heap_207611' is allocated
bytes_before(&$heap_207611)' = 0
((char*)&$heap_207611)[16]' = 1
((char*)&$heap_207611)[20]' = 1
((char*)&$heap_207611)[24]' = 0
((char*)&$heap_207611)[28]' = &$unknown_761723
((char*)&$heap_207611)[12]' = 1
bytes_after(&$heap_207612)' = 120
$heap_207612' is allocated by malloc
bytes_before(&$heap_207612)' = 0
$heap_207613' = 0
bytes_after(&$heap_207613)' = 124
$heap_207613' is allocated by malloc
$heap_207613' is freed
bytes_before(&$heap_207613)' = 0
((char*)&$heap_207613)[44]' = pvmmydsig
((char*)&$heap_207613)[52]' = pvmudpmtu
((char*)&$heap_207613)[56]' = 2
((char*)&$heap_207613)[72]' = 1
((char*)&$heap_207613)[76]' = 1
((char*)&$heap_207613)[80]' = &$heap_207612
((char*)&$heap_207613)[8]' = &$heap_207616
((char*)&$heap_207613)[84]' = &$heap_207615
((char*)&$heap_207613)[92]' = &$heap_207614
((char*)&$heap_207613)[100]' = 1
((char*)&$heap_207613)[108]' = 1000
((char*)&$heap_207613)[112]' = 0
((char*)&$heap_207613)[12]' = &$heap_207617
bytes_after(&$heap_207614)' = 120
$heap_207614' is allocated by malloc
bytes_before(&$heap_207614)' = 0
((char*)&$heap_207614)[16]' = 0
((char*)&$heap_207614)[20]' = 0
((char*)&$heap_207614)[116]' = 0
bytes_after(&$heap_207615)' = 120
$heap_207615' is allocated by malloc
bytes_before(&$heap_207615)' = 0
((char*)&$heap_207615)[16]' = 0
((char*)&$heap_207615)[20]' = 0
((char*)&$heap_207615)[116]' = 0
$heap_207616' = *hn
bytes_after(&$heap_207616)' = strlen(hn) + 1
$heap_207616' is allocated by malloc
bytes_before(&$heap_207616)' = 0
strlen(&$heap_207616)' = strlen(hn)
tocttou($heap_207616)' = tocttou(*hn)
$heap_207617' = *myarchname
bytes_after(&$heap_207617)' = strlen(myarchname) + 1
$heap_207617' is allocated by malloc
bytes_before(&$heap_207617)' = 0
strlen(&$heap_207617)' = strlen(myarchname)
tocttou($heap_207617)' = tocttou(*myarchname)
bytes_after(&$heap_207618)' = 120
$heap_207618' is allocated by malloc
$heap_207618' is allocated
bytes_before(&$heap_207618)' = 0
((char*)&$heap_207618)[16]' = 0
((char*)&$heap_207618)[20]' = 0
((char*)&$heap_207618)[8]' = 0
((char*)&$heap_207618)[116]' = 0
((char*)&$heap_207618)[12]' = 0
$heap_207619' = &$heap_207619
bytes_after(&$heap_207619)' = 120
$heap_207619' is allocated by malloc
$heap_207619' is allocated
bytes_before(&$heap_207619)' = 0
((char*)&$heap_207619)[16]' = 0
((char*)&$heap_207619)[20]' = 0
((char*)&$heap_207619)[4]' = &$heap_207619
((char*)&$heap_207619)[8]' = 0
((char*)&$heap_207619)[116]' = 0
((char*)&$heap_207619)[12]' = 0
bytes_after(&$heap_207620)' = 20
$heap_207620' is allocated by malloc
$heap_207620' is allocated
bytes_before(&$heap_207620)' = 0
((char*)&$heap_207620)[16]' = 0
((char*)&$heap_207620)[8]' = 0
((char*)&$heap_207620)[12]' = 0
$heap_207621' = 1
bytes_after(&$heap_207621)' = 124
$heap_207621' is allocated by malloc
bytes_before(&$heap_207621)' = 0
((char*)&$heap_207621)[44]' = pvmmydsig
((char*)&$heap_207621)[52]' = pvmudpmtu
((char*)&$heap_207621)[56]' = 2
((char*)&$heap_207621)[72]' = 1
((char*)&$heap_207621)[76]' = 1
((char*)&$heap_207621)[80]' = &$heap_207622
((char*)&$heap_207621)[8]' = &$heap_207623
((char*)&$heap_207621)[84]' = &$heap_207619
((char*)&$heap_207621)[92]' = &$heap_207618
((char*)&$heap_207621)[100]' = 1
((char*)&$heap_207621)[108]' = 1000
((char*)&$heap_207621)[112]' = &$heap_207620
((char*)&$heap_207621)[12]' = &$heap_207624
$heap_207622' = &$heap_207622
bytes_after(&$heap_207622)' = 120
$heap_207622' is allocated by malloc
$heap_207622' is allocated
bytes_before(&$heap_207622)' = 0
((char*)&$heap_207622)[16]' = 0
((char*)&$heap_207622)[20]' = 0
((char*)&$heap_207622)[4]' = &$heap_207622
((char*)&$heap_207622)[8]' = 0
((char*)&$heap_207622)[116]' = 0
((char*)&$heap_207622)[12]' = 0
$heap_207623' = 112
bytes_after(&$heap_207623)' = 6
$heap_207623' is allocated by malloc
$heap_207623' is allocated
bytes_before(&$heap_207623)' = 0
strlen(&$heap_207623)' = 5
tocttou($heap_207623)' = tocttou(#string167)
$heap_207624' = *myarchname
bytes_after(&$heap_207624)' = strlen(myarchname) + 1
$heap_207624' is allocated by malloc
$heap_207624' is allocated
bytes_before(&$heap_207624)' = 0
strlen(&$heap_207624)' = strlen(myarchname)
tocttou($heap_207624)' = tocttou(*myarchname)
bytes_after(&$heap_207625)' = strlen(((char*)&$unknown_761724)[116]) + 1
$heap_207625' is allocated by malloc
$heap_207625' is allocated
bytes_before(&$heap_207625)' = 0
strlen(&$heap_207625)' = strlen(((char*)&$unknown_761724)[116])
$heap_207626' is allocated by malloc
$heap_207626' is allocated
bytes_before(&$heap_207626)' = 0
$heap_207627' = 36
bytes_after(&$heap_207627)' = 23
$heap_207627' is allocated by malloc
$heap_207627' is allocated
bytes_before(&$heap_207627)' = 0
tocttou($heap_207627)' = tocttou(#string170)
$heap_207628' = $input_122540
bytes_after(&$heap_207628)' = $input_122532 + 1
$heap_207628' is allocated by malloc
$heap_207628' is a non-heap object
bytes_before(&$heap_207628)' = 0
strlen(&$heap_207628)' = $input_122532
hosts' = &$heap_207611
hp' = ((char*)&$unknown_761723)[4]
hp2' = &$unknown_761724
s' = &$heap_207628




Change Warning 22082.28919 : Null Pointer Dereference

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