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BUG/MEDIUM: cache: free ressources in chn_end_analyze

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Upon an aborted HTTP connection, or an error, the filter cache does not
decrement the refcount and does not free the allocated ressources.
This commit is contained in:
William Lallemand 2017-11-24 14:33:54 +01:00 committed by Willy Tarreau
parent 0542c8b39a
commit 49dc048c25
1 changed files with 30 additions and 0 deletions
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30
src/cache.c
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@ -139,6 +139,35 @@ cache_store_chn_start_analyze(struct stream *s, struct filter *filter, struct ch
return 1;
}
static int
cache_store_chn_end_analyze(struct stream *s, struct filter *filter, struct channel *chn)
{
struct cache_st *st = filter->ctx;
struct cache *cache = filter->config->conf;
struct shared_context *shctx = shctx_ptr(cache);
if (!(chn->flags & CF_ISRESP))
return 1;
/* Everything should be released in the http_end filter, but we need to do it
* there too, in case of errors */
if (st && st->first_block) {
shctx_lock(shctx);
shctx_row_dec_hot(shctx, st->first_block);
shctx_unlock(shctx);
}
if (st) {
pool_free2(pool2_cache_st, st);
filter->ctx = NULL;
}
return 1;
}
static int
cache_store_http_headers(struct stream *s, struct filter *filter, struct http_msg *msg)
{
@ -892,6 +921,7 @@ struct flt_ops cache_ops = {
/* Handle channels activity */
.channel_start_analyze = cache_store_chn_start_analyze,
.channel_end_analyze = cache_store_chn_end_analyze,
/* Filter HTTP requests and responses */
.http_headers = cache_store_http_headers,