tree fa76387b54e5903ff8fba0f5cfdebc58e24b125a
parent 29a0cfbf91ba997591535a4f7246835ce8328141
author Yan, Zheng <zyan@redhat.com> 1505103008 +0800
committer Ilya Dryomov <idryomov@gmail.com> 1505847892 +0200

ceph: avoid panic in create_session_open_msg() if utsname() returns NULL

utsname() can return NULL while process is exiting. Kernel releases
file locks during process exits. We send request to mds when releasing
file lock. So it's possible that we open mds session while process is
exiting. utsname() is called in create_session_open_msg().

Link: http://tracker.ceph.com/issues/21275
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
[idryomov@gmail.com: drop utsname.h include from mds_client.c]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>