Text  |   XML   |   Visible Warnings:

Pvm : Pvm analysis 1 : Null Pointer Dereference  at task.c:470

Categories: LANG.MEM.NPD CWE:476
Warning ID: 2498.2528
Procedure: task_new
Trace: View
Modified: Wed Sep 2 12:39:53 2009   show 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     
ProblemLineSource
   /u1/paul/SATE/2010/c/pvm/pvm3/src/task.c
   Enter task_new
 439 struct task * 
 440 task_new(tid) 
 441         int tid;
 442 {
 443         struct task *tp, *tp2;
 444  
 445         if (tid) {
 446                 ntasks++;
 447                 if (pvmdebmask & PDMTASK) {
 448                         pvmlogprintf("task_new(%d) ntasks=%d pvm_max_ntasks=%d\n",
 449                                 tid, ntasks, pvm_max_ntasks );
 450                 }
 451                 if (pvm_max_ntasks && ntasks > pvm_max_ntasks) {
 452                         pvmlogprintf("task_new() too many tasks?\n");
 453                         ntasks--;  /* this one didn't make it... :-) */ 
 454                         return( (struct task *) NULL );
 455                 }
 456         }
 457  
 458         if (!(tp = TALLOC(1, struct task, "task"))) {
 459                 pvmlogprintf("task_new() can't get memory\n");
 460                 pvmbailout(0);
 461         }
 462         BZERO((char*)tp, sizeof(struct task));
 463         tp->t_tid = tid;
 464         tp->t_txq = pk_new(0);
 465         tp->t_sock = -1;
 466         tp->t_out = -1;
 467         tp->t_authfd = -1;
 468         tp->t_schedlmsg = 0;
true469         tp->t_ccs = TALLOC(1, struct ccon, "ccon");
tp->t_ccs <= 4095470     tp->t_ccs->c_link = tp->t_ccs->c_rlink = 0;     /* Null Pointer Dereference */
Preconditions 
$param_1 != 0
ntasks <= pvm_max_ntasks - 1
pvm_max_ntasks != 0
Postconditions 
atnewline' = 1
errno' != 0
$heap_4505' = 0
bytes_after(&$heap_4505)' = 224
$heap_4505' is allocated by malloc
$heap_4505' is allocated
bytes_before(&$heap_4505)' = 0
strlen(&$heap_4505)' = 0
((char*)&$heap_4505)[172]' = 0
((char*)&$heap_4505)[216]' = 0
((char*)&$heap_4505)[32]' = $param_1
((char*)&$heap_4505)[48]' = -1
((char*)&$heap_4505)[80]' = &$heap_4506
((char*)&$heap_4505)[104]' = -1
((char*)&$heap_4505)[120]' = -1
bytes_after(&$heap_4506)' = 184
$heap_4506' is allocated by malloc
$heap_4506' is allocated
bytes_before(&$heap_4506)' = 0
((char*)&$heap_4506)[16]' = 0
((char*)&$heap_4506)[176]' = 0
((char*)&$heap_4506)[24]' = 0
((char*)&$heap_4506)[32]' = 0
((char*)&$heap_4506)[40]' = 0
ntasks' = ntasks + 1
tid' = $param_1
tmbuf.tm_sec' = &$unknown_201034
tp' = &$heap_4505



Change Warning 2498.2528 : Null Pointer Dereference

Priority:
State:
Finding:
Owner:
Note: