cxl: Fix NULL pointer dereference on kernel contexts with no AFU interrupts
If a kernel context is initialised and does not have any AFU interrupts
allocated it will cause a NULL pointer dereference when the context is
detached since the irq_names list will not have been initialised.
Move the initialisation of the irq_names list into the cxl_context_init
routine so that it will be valid for the entire lifetime of the context
and will not cause a NULL pointer dereference.
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c
index 26d206b..edbb99e 100644
--- a/drivers/misc/cxl/context.c
+++ b/drivers/misc/cxl/context.c
@@ -67,6 +67,8 @@
ctx->pending_fault = false;
ctx->pending_afu_err = false;
+ INIT_LIST_HEAD(&ctx->irq_names);
+
/*
* When we have to destroy all contexts in cxl_context_detach_all() we
* end up with afu_release_irqs() called from inside a