Commit 456295e2 authored Dec 08, 2014 by Ian Munsie Committed by Michael Ellerman Dec 29, 2014

cxl: Fix leaking interrupts if attach process fails



In this particular error path we have already allocated the AFU
interrupts, but have not yet set the status to STARTED. The detach
context code will only attempt to release the interrupts if the context
is in state STARTED, so in this case the interrupts would remain
allocated.

This patch releases the AFU interrupts immediately if the attach call
fails to prevent them leaking.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent e144d4ed

drivers/misc/cxl/file.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -185,8 +185,10 @@ static long afu_ioctl_start_work(struct cxl_context *ctx,
		ctx->pid = get_pid(get_task_pid(current, PIDTYPE_PID));

		if ((rc = cxl_attach_process(ctx, false, work.work_element_descriptor,
		amr)))
		amr))) {
		afu_release_irqs(ctx);
		goto out;
		}

		ctx->status = STARTED;
		rc = 0;