msm-4.14/fs/nfs/flexfilelayout
Trond Myklebust a471b42537 pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error
commit 8e04fdfadda75a849c649f7e50fe7d97772e1fcb upstream.

mirror->mirror_ds can be NULL if uninitialised, but can contain
a PTR_ERR() if call to GETDEVICEINFO failed.

Fixes: 65990d1afbd2 ("pNFS/flexfiles: Fix a deadlock on LAYOUTGET")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # 4.10+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-31 07:28:37 +02:00
..