From 1c8093591d1e372d700fe65423e7315a8ecf721b Mon Sep 17 00:00:00 2001 From: Ekansh Gupta Date: Fri, 13 Oct 2023 13:20:06 +0100 Subject: misc: fastrpc: Clean buffers on remote invocation failures With current design, buffers and dma handles are not freed in case of remote invocation failures returned from DSP. This could result in buffer leakings and dma handle pointing to wrong memory in the fastrpc kernel. Adding changes to clean buffers and dma handles even when remote invocation to DSP returns failures. Fixes: c68cfb718c8f ("misc: fastrpc: Add support for context Invoke method") Cc: stable Signed-off-by: Ekansh Gupta Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20231013122007.174464-4-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/fastrpc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index a52701c1b018..3cdc58488db1 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -1176,11 +1176,6 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, err = wait_for_completion_interruptible(&ctx->work); } - if (err) - goto bail; - - /* Check the response from remote dsp */ - err = ctx->retval; if (err) goto bail; @@ -1191,6 +1186,11 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, if (err) goto bail; + /* Check the response from remote dsp */ + err = ctx->retval; + if (err) + goto bail; + bail: if (err != -ERESTARTSYS && err != -ETIMEDOUT) { /* We are done with this compute context */ -- cgit v1.2.3