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authorPetr Baudis <pasky@suse.cz>2009-07-16 10:10:10 -0700
committerUlrich Drepper <drepper@redhat.com>2009-07-16 10:10:10 -0700
commit137028b4d7e50f71906c1656c27079eac5a1d085 (patch)
tree61b121088c68e50ff2483cd15675729cf3c337e7 /nscd/pwdcache.c
parent50158f95525ca59459a90f2a7bc65ceb892a0807 (diff)
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Fix lock handling in memory hander of nscd.
The commit 20e498bd removes the pthread_mutex_rdlock() calls, but not the corresponding pthread_mutex_unlock() calls. Also, the database lock is never unlocked in one branch of the mempool_alloc() if. I think unreproducible random assert(dh->usable) crashes in prune_cache() were caused by this. But an easy way to make nscd threads hang with the broken locking was.
Diffstat (limited to 'nscd/pwdcache.c')
-rw-r--r--nscd/pwdcache.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/nscd/pwdcache.c b/nscd/pwdcache.c
index 2338e7e1e0..fc5b44eef0 100644
--- a/nscd/pwdcache.c
+++ b/nscd/pwdcache.c
@@ -153,8 +153,6 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
(void) cache_add (req->type, key_copy, req->key_len,
&dataset->head, true, db, owner, he == NULL);
- pthread_rwlock_unlock (&db->lock);
-
/* Mark the old entry as obsolete. */
if (dh != NULL)
dh->usable = false;
@@ -362,12 +360,10 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
(void) cache_add (GETPWBYUID, cp, key_offset, &dataset->head,
false, db, owner, false);
}
-
- out:
- pthread_rwlock_unlock (&db->lock);
}
}
+out:
if (__builtin_expect (written != total, 0) && debug_level > 0)
{
char buf[256];