From: redickwang <redickwang@tencent.com>
Date: Tue, 22 Sep 2020 06:15:51 +0000 (+0800)
Subject: mds: assert when inode has no parent directory
X-Git-Tag: v16.1.0~815^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=a080f2ab0470e2bbdcdf4281c0f9be225a5ee886;p=ceph.git

mds: assert when inode has no parent directory

assert(in->get_parent_dir()) when open_undef_inodes_dirfrags. Elements in fetch_queue maybe NULL for unexpected situation, it's better fail at the beginning

Fixes: https://tracker.ceph.com/issues/47571

Signed-off-by: redickwang <redickwang@tencent.com>
---

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index 860c39f4a5cd..8556793962d2 100644
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -6058,6 +6058,7 @@ bool MDCache::open_undef_inodes_dirfrags()
        ++p) {
     CInode *in = *p;
     ceph_assert(!in->is_base());
+    ceph_assert(in->get_parent_dir());
     fetch_queue.insert(in->get_parent_dir());
   }