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| author | Petr Baudis <pasky@suse.cz> | 2009-07-16 10:10:10 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-07-16 10:10:10 -0700 |
| commit | 137028b4d7e50f71906c1656c27079eac5a1d085 (patch) | |
| tree | 61b121088c68e50ff2483cd15675729cf3c337e7 /nscd/hstcache.c | |
| parent | 50158f95525ca59459a90f2a7bc65ceb892a0807 (diff) | |
| download | glibc-137028b4d7e50f71906c1656c27079eac5a1d085.tar.gz glibc-137028b4d7e50f71906c1656c27079eac5a1d085.tar.xz glibc-137028b4d7e50f71906c1656c27079eac5a1d085.zip | |
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/hstcache.c')
| -rw-r--r-- | nscd/hstcache.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/nscd/hstcache.c b/nscd/hstcache.c index 51e2273960..77ffcdf880 100644 --- a/nscd/hstcache.c +++ b/nscd/hstcache.c @@ -153,8 +153,6 @@ cache_addhst (struct database_dyn *db, int fd, request_header *req, (void) cache_add (req->type, &dataset->strdata, 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; @@ -404,8 +402,6 @@ cache_addhst (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); } } |