From: Chris Mason <clm@meta.com>
To: Chuck Lever <chuck.lever@oracle.com>,
Jeff Layton <jlayton@kernel.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
Trond Myklebust <trondmy@gmail.com>, <linux-nfs@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH] nfsd: drain backchannel callbacks before freeing a session
Date: Tue, 19 May 2026 10:49:13 -0700 [thread overview]
Message-ID: <20260519180032.1852793-2-clm@meta.com> (raw)
DESTROY_SESSION can free an nfsd4_session while a backchannel callback
for the same client is still live on rpciod, leaving clp->cl_cb_session
as a dangling pointer.
The first patch waits on cl_cb_inflight, and the second hopes to make
things harder to regress in the future by dropping a NULL in there.
Signed-off-by: Chris Mason <clm@meta.com>
next reply other threads:[~2026-05-19 18:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 17:49 Chris Mason [this message]
2026-05-19 17:49 ` [PATCH 1/2] nfsd: clear cl_cb_session on DESTROY_SESSION Chris Mason
2026-05-19 19:48 ` Jeff Layton
2026-05-19 17:49 ` [PATCH 2/2] nfsd: drain inflight callbacks in probe_callback_sync Chris Mason
2026-05-19 18:44 ` J. Bruce Fields
2026-05-19 20:01 ` [PATCH] nfsd: drain backchannel callbacks before freeing a session Jeff Layton
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