From: Soumya Koduri <skoduri@redhat.com>
Date: Tue, 22 Dec 2020 17:27:52 +0000 (+0530)
Subject: rgw/lc: Fix use-after-free in RGWLC::process
X-Git-Tag: v16.2.0~43^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F40338%2Fhead;p=ceph.git

rgw/lc: Fix use-after-free in RGWLC::process

Fixed use-after-free issue with 'rgw::sal::LCSerializer lock'
in RGWLC::process.

Signed-off-by: Soumya Koduri <skoduri@redhat.com>
(cherry picked from commit e54e68ad3c88766ac370dfe2bbb5b123e18a7392)
---

diff --git a/src/rgw/rgw_lc.cc b/src/rgw/rgw_lc.cc
index 2275adfe81fc..dd1b9b1b4cca 100644
--- a/src/rgw/rgw_lc.cc
+++ b/src/rgw/rgw_lc.cc
@@ -1804,11 +1804,11 @@ int RGWLC::process(int index, int max_lock_secs, LCWorker* worker,
 	    << dendl;
 
     lock->unlock();
-    delete lock;
     ret = bucket_lc_process(entry.bucket, worker, thread_stop_at(), once);
     bucket_lc_post(index, max_lock_secs, entry, ret, worker);
   } while(1 && !once);
 
+  delete lock;
   return 0;
 
 exit: