Suhas Athani has uploaded this change for review.

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IBMCEPH-13841:
Fix nfs4_op_getattr() crash when op_ctx->clientid is NULL

Fix a NULL-pointer dereference in nfs4_op_getattr() when
evaluating the WRITE-delegation “different client” check.

op_ctx->clientid can be NULL (e.g., NFSv4.0 compound where
op_ctx->nfs_minorvers == 0), and the prior code dereferenced
*op_ctx->clientid, crashing ganesha under delegation stress
(recall16).

Change-Id: I51703b9ba671e85af7887d13b2130473f73f0314
Signed-off-by: Suhas Athani <Suhas.Athani@ibm.com>
---
M src/Protocols/NFS/nfs4_op_getattr.c
1 file changed, 6 insertions(+), 2 deletions(-)

git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/14/1235214/1

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