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Subject: [PATCH v3 0/2] Fix request deferral for NFS/RDMA
From:   Chuck Lever <chuck.lever@oracle.com>
To:     linux-nfs@vger.kernel.org
Cc:     rostedt@goodmis.org
Date:   Thu, 07 Apr 2022 13:43:16 -0400
Message-ID: <164935330144.76813.17862521591948764594.stgit@klimt.1015granger.net>
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Last week Trond reported a server crash in svc_rdma_sendto() that
seemed related to deferral of a request incoming on an RPC/RDMA
transport. A link to that report appears in the first patch below.

The first patch in this series addresses the crash, and the second
fixes a related observability crash. The other patches from v1
of this series have been postponed to 5.19.

Comments, opinions, and Reviewed-by's are appreciated!


Since v2:
- Fix "has unsafe dereference" warnings in patch 2/2

Since v1:
- Series trimmed down to just what will go to 5.18-rc
- 2nd patch re-worked so it can be backported to recent stable
- Addressed a few checkpatch.pl nits

---

Chuck Lever (2):
      SUNRPC: Fix NFSD's request deferral on RDMA transports
      SUNRPC: Fix the svc_deferred_event trace class


 include/linux/sunrpc/svc.h              | 1 +
 include/trace/events/sunrpc.h           | 7 ++++---
 net/sunrpc/svc_xprt.c                   | 3 +++
 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 2 +-
 4 files changed, 9 insertions(+), 4 deletions(-)

--
Chuck Lever