tree 1ee6e35d91670192406d3d974f74ae83e9240143
parent 76600f633bb977eb758a7c9bc710b28f3bde3670
author Dave Wysochanski <dwysocha@redhat.com> 1607681571 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1611077250 +0100

NFS4: Fix use-after-free in trace_event_raw_event_nfs4_set_lock

commit 3d1a90ab0ed93362ec8ac85cf291243c87260c21 upstream.

It is only safe to call the tracepoint before rpc_put_task() because
'data' is freed inside nfs4_lock_release (rpc_release).

Fixes: 48c9579a1afe ("Adding stateid information to tracepoints")
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>