SUNRPC: Fix general protection fault in trace_rpc_xdr_overflow()
The TP_fast_assign() section is careful enough not to dereference
xdr->rqst if it's NULL. The TP_STRUCT__entry section is not.
Fixes: 5582863f45
("SUNRPC: Add XDR overflow trace event")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -655,10 +655,10 @@ TRACE_EVENT(rpc_xdr_overflow,
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__field(size_t, tail_len)
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__field(size_t, tail_len)
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__field(unsigned int, page_len)
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__field(unsigned int, page_len)
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__field(unsigned int, len)
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__field(unsigned int, len)
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__string(progname,
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__string(progname, xdr->rqst ?
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xdr->rqst->rq_task->tk_client->cl_program->name)
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xdr->rqst->rq_task->tk_client->cl_program->name : "unknown")
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__string(procedure,
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__string(procedure, xdr->rqst ?
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xdr->rqst->rq_task->tk_msg.rpc_proc->p_name)
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xdr->rqst->rq_task->tk_msg.rpc_proc->p_name : "unknown")
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),
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),
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TP_fast_assign(
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TP_fast_assign(
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