| Message ID | 1693464082-24095-1-git-send-email-quic_ekangupt@quicinc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [v1] misc: fastrpc: Clean buffers on remote invocation failures | expand |
On Thu, Aug 31, 2023 at 12:11:22PM +0530, Ekansh Gupta wrote: > 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. > > Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com> What commit id does this fix? thanks, greg k-h
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 9666d28..299375f 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, if (err) goto bail; - /* Check the response from remote dsp */ - err = ctx->retval; - if (err) - goto bail; - if (ctx->nscalars) { /* make sure that all memory writes by DSP are seen by CPU */ dma_rmb(); @@ -1190,6 +1185,11 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, 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 */
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. Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com> --- drivers/misc/fastrpc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)