Eryu, Recently, two independent bugs have been reported by Lubos Dolezel and Dan Carpenter. The first bug was there since overlayfs nfs_export support. The second bug is a regression introduced in v5.5 that can crash the kernel. The fix patches have just been posted, so the purpose of this posting it to test the fixes pre merge. Thanks, Amir. Amir Goldstein (2): open_by_handle: add option -z to query file handle size overlay: regression test for two file handle bugs src/open_by_handle.c | 27 +++++++++++++-- tests/overlay/073 | 80 +++++++++++++++++++++++++++++++++++++++++++ tests/overlay/073.out | 2 ++ tests/overlay/group | 1 + 4 files changed, 107 insertions(+), 3 deletions(-) create mode 100755 tests/overlay/073 create mode 100644 tests/overlay/073.out -- 2.17.1