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Commit 5f530223 authored by Trishansh Bhardwaj's avatar Trishansh Bhardwaj Committed by Gerrit - the friendly Code Review server
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msm: camera: core: Prevent crash on kref_put 



kref_put causes crash if refcount is zero.
This change prevents crash by checking if refcount value.

CRs-Fixed: 2553290
Change-Id: Ie9a950b289cdb2b8fca8c5d025be540d926eadbd
Signed-off-by: default avatarTrishansh Bhardwaj <tbhardwa@codeaurora.org>
parent 809c56ef

drivers/cam_core/cam_context.c

+6 −1
Original line number Diff line number Diff line
@@ -597,7 +597,12 @@ int cam_context_deinit(struct cam_context *ctx) 


void cam_context_putref(struct cam_context *ctx)

{

	if (kref_read(&ctx->refcount))

		kref_put(&ctx->refcount, cam_node_put_ctxt_to_free_list);

	else

		WARN(1, "ctx %s %d state %d devhdl %X\n", ctx->dev_name,

			ctx->ctx_id, ctx->state, ctx->dev_hdl);



	CAM_DBG(CAM_CORE,

		"ctx device hdl %ld, ref count %d, dev_name %s",

		ctx->dev_hdl, refcount_read(&(ctx->refcount.refcount)),