transfused perfstat: fix bug with running multiple perfstats in a row (#1129)

After freeing the head of the perfstat block list, we must set it to NULL
to indicate that new blocks must be allocated. Previously, we risked
segfaults by trying to use a freed list.

Signed-off-by: David Sheets <dsheets@docker.com>
This commit is contained in:
David Sheets 2017-02-01 20:24:21 +00:00 committed by GitHub
parent 031be1e1f9
commit 59947ad010

View File

@ -165,6 +165,7 @@ void *stop_perfstat(parameters_t *params, char *req, size_t len)
*((uint64_t *) (reply + 8)) = now(params);
copy_and_free_perfstats(conn->perfstats, reply + 16);
conn->perfstats = NULL;
unlock("perfstat lock: stop_perfstat", &conn->perfstat_lock);