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NFS4: Fix use-after-free in trace_event_raw_event_nfs4_set_lock
authorDave Wysochanski <dwysocha@redhat.com>
Fri, 11 Dec 2020 10:12:51 +0000 (05:12 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 23 Jan 2021 14:48:43 +0000 (15:48 +0100)
commit905e5e439fb533ccb03958716e9e8697cf02e641
treec6044ff8743d53e2be62c0f661a673f014942f72tree | snapshot
parent3b972cda608f5fd3db77e05f3a1287cdcd7d8b21commit | diff
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>
fs/nfs/nfs4proc.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git