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Commit 5e9ef246 authored Jun 09, 2016 by Ira Weiny Committed by Doug Ledford Jun 17, 2016

IB/qib: Prevent context loss



If a context has already been assigned to an FD, prevent
another assignment.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

parent ca2f30a0

drivers/infiniband/hw/qib/qib_file_ops.c

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2178,6 +2178,11 @@ static ssize_t qib_write(struct file fp, const char __user data,

	switch (cmd.type) {		switch (cmd.type) {
	case QIB_CMD_ASSIGN_CTXT:		case QIB_CMD_ASSIGN_CTXT:
			if (rcd) {
			ret = -EINVAL;
			goto bail;
			}

	ret = qib_assign_ctxt(fp, &cmd.cmd.user_info);		ret = qib_assign_ctxt(fp, &cmd.cmd.user_info);
	if (ret)		if (ret)
	goto bail;		goto bail;