fastrpc_invoke_ctx can have refcount of 2 in error path where
rpmsg_send() fails to send invoke message. decrement the refcount
properly in the error path to fix this leak.
This also fixes below static checker warning:
drivers/misc/fastrpc.c:990 fastrpc_internal_invoke()
warn: 'ctx->refcount.refcount.ref.counter' not decremented on lines: 990.
Fixes: c68cfb718c8f ("misc: fastrpc: Add support for context")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200512110930.2550-1-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
struct fastrpc_channel_ctx *cctx;
struct fastrpc_user *fl = ctx->fl;
struct fastrpc_msg *msg = &ctx->msg;
+ int ret;
cctx = fl->cctx;
msg->pid = fl->tgid;
msg->size = roundup(ctx->msg_sz, PAGE_SIZE);
fastrpc_context_get(ctx);
- return rpmsg_send(cctx->rpdev->ept, (void *)msg, sizeof(*msg));
+ ret = rpmsg_send(cctx->rpdev->ept, (void *)msg, sizeof(*msg));
+
+ if (ret)
+ fastrpc_context_put(ctx);
+
+ return ret;
+
}
static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel,