Madhu Thorat has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/488074 ) Change subject: In mdc_open2_by_name() after lookup check if obj_handle.type==REGULAR_FILE ...................................................................... In mdc_open2_by_name() after lookup check if obj_handle.type==REGULAR_FILE In mdc_open2_by_name() after mdc_lookup() completes successfully and prior to calling FSALs open2(..) we don't check the entry->obj_handle.type to verify if the object is for a regular file. It may be possible that prior to calling mdc_lookup() in mdc_open2_by_name(), another thread working on a different client request may have created a symbolic link with the same name. Using an object created for a symbolic link in nfs4_op_open() code path lead to a crash. Fixed this by adding a check in mdc_open2_by_name() to verify entry->obj_handle.type is REGULAR_FILE and then proceed to call a FSALs open2(..). Change-Id: Ib86b53f1c7bb6652509ef98575f6b1e8ff2fde82 Signed-off-by: Madhu Thorat <madhu.punjabi(a)in.ibm.com&gt; --- M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_file.c 1 file changed, 13 insertions(+), 0 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/74/488074/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/488074 To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: Ib86b53f1c7bb6652509ef98575f6b1e8ff2fde82 Gerrit-Change-Number: 488074 Gerrit-PatchSet: 1 Gerrit-Owner: Madhu Thorat <madhu.punjabi(a)in.ibm.com&gt; Gerrit-MessageType: newchange