[v2,0/2] Fix request deferral for NFS/RDMA

Message

Chuck Lever April 6, 2022, 6:07 p.m. UTC

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
have been postponed to 5.19.

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

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           | 9 +++++----
 net/sunrpc/svc_xprt.c                   | 3 +++
 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 2 +-
 4 files changed, 10 insertions(+), 5 deletions(-)

--
Chuck Lever