[Bug 1129] New: pmDupContext-created context SEGVs during pmDestroyContext

[bugzilla-daemon@xxxxxxxxxxx]

Bug ID	1129
Summary	pmDupContext-created context SEGVs during pmDestroyContext
Product	pcp
Version	unspecified
Hardware	All
OS	Linux
Status	NEW
Severity	major
Priority	P5
Component	pcp
Assignee	pcp@kenj.com.au
Reporter	fche@redhat.com
CC	pcp@oss.sgi.com
Classification	Unclassified

% % rpm -q pcp-libs pcp-libs-devel
pcp-libs-3.10.8-1.fc22.x86_64
pcp-libs-devel-3.10.8-1.fc22.x86_64

% cat foo.c
#include <pcp/pmapi.h>

int main () {
  int s1 = pmNewContext(PM_CONTEXT_HOST, "local:");
  int s2 = pmDupContext();
  pmDestroyContext (s2);
  pmDestroyContext (s1);
  /* or in s1, s2 sequence */
}


% gcc foo.c -lpcp
% ./a.out
SEGV

% valgrind ./a.out

==14840== Invalid read of size 8
==14840==    at 0x4E82040: __pmHashWalkCB (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4E48D62: pmDestroyContext (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4007AB: main (foo.c:7)
==14840==  Address 0x7cf5170 is 0 bytes inside a block of size 8 free'd
==14840==    at 0x4C29D6A: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==14840==    by 0x4E81FD7: __pmHashClear (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4E48D6A: pmDestroyContext (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4007A1: main (foo.c:6)
==14840== 
==14840== Invalid free() / delete / delete[] / realloc()
==14840==    at 0x4C29D6A: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==14840==    by 0x4E81FD7: __pmHashClear (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4E48D6A: pmDestroyContext (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4007AB: main (foo.c:7)
==14840==  Address 0x7cf5170 is 0 bytes inside a block of size 8 free'd
==14840==    at 0x4C29D6A: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==14840==    by 0x4E81FD7: __pmHashClear (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4E48D6A: pmDestroyContext (in /usr/lib64/libpcp.so.3)
==14840==    by 0x4007A1: main (foo.c:6)
==14840==

---

      You are receiving this mail because:

• You are on the CC list for the bug.