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* nscd/connections.c (verify_persistent_db): Recognize circular lists.

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This commit is contained in:
Ulrich Drepper 2007-10-06 19:03:13 +00:00
parent 8c7661bcd3
commit 506073094c
2 changed files with 7 additions and 1 deletions
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1
ChangeLog
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@ -1,6 +1,7 @@
2007-10-06 Ulrich Drepper <drepper@redhat.com> 2007-10-06 Ulrich Drepper <drepper@redhat.com>
* nscd/nscd_helper.c (__nscd_cache_search): Prevent endless loops. * nscd/nscd_helper.c (__nscd_cache_search): Prevent endless loops.
* nscd/connections.c (verify_persistent_db): Recognize circular lists.
[BZ #4407] [BZ #4407]
* sysdeps/ieee754/dbl-64/e_lgamma_r.c: Fix *signgamp for -0.0. * sysdeps/ieee754/dbl-64/e_lgamma_r.c: Fix *signgamp for -0.0.

7
nscd/connections.c
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@ -378,7 +378,8 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr)
nscd_ssize_t he_cnt = 0; nscd_ssize_t he_cnt = 0;
for (nscd_ssize_t cnt = 0; cnt < head->module; ++cnt) for (nscd_ssize_t cnt = 0; cnt < head->module; ++cnt)
{ {
ref_t work = head->array[cnt]; ref_t first = head->array[cnt];
ref_t work = first;
while (work != ENDREF) while (work != ENDREF)
{ {
@ -437,6 +438,10 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr)
} }
work = here->next; work = here->next;
if (work == first)
/* A circular list, this must not happen. */
goto fail;
} }
} }