From eaa23dde940ac3f3cb36c9e1a8836beea1410e2f Mon Sep 17 00:00:00 2001 From: Ray Essick Date: Sun, 15 Apr 2018 18:04:15 -0700 Subject: mm-video-v4l2: Protect buffer access and increase input buffer size Protect buffer access for below scenarios: *Increase the scope of buf_lock in free_buffer to avoid access of freed buffer for both input and output buffers. Also, add check before output buffer access. *Disallow allocate buffer mode after client has called use buffer. Allocate additional 512 bytes of memory for input buffers on top of allocation size as per hardware requirement Change-Id: I3c8e59cc21828c2c8ef4c59642700a31f8c81e83 Author: Santhosh Behara Bug: 64340487 Test: PoC before/after Merged-In: Icc65fe43134493fefe6e420ca818f60995084871 Merged-In: I70fa1dc7ac43b9281209955afc30f6737ce25f0e Merged-In: I722ab9b6ecff20dcb97bc3b02830ef484e8bd495 Merged-In: I2e45bbcc6a2438ff226409b35ee802d123cf3dd8 --- msm8974/mm-video-v4l2/vidc/vdec/inc/omx_vdec.h | 4 +-- .../vidc/vdec/src/omx_vdec_msm8974.cpp | 31 ++++++++++++++++++---- 2 files changed, 28 insertions(+), 7 deletions(-) (limited to 'msm8974') diff --git a/msm8974/mm-video-v4l2/vidc/vdec/inc/omx_vdec.h b/msm8974/mm-video-v4l2/vidc/vdec/inc/omx_vdec.h index e3f5d8e..51440c9 100644 --- a/msm8974/mm-video-v4l2/vidc/vdec/inc/omx_vdec.h +++ b/msm8974/mm-video-v4l2/vidc/vdec/inc/omx_vdec.h @@ -1,5 +1,5 @@ /*-------------------------------------------------------------------------- -Copyright (c) 2010 - 2014, The Linux Foundation. All rights reserved. +Copyright (c) 2010 - 2014, 2018, The Linux Foundation. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions @@ -1095,7 +1095,7 @@ class omx_vdec: public qc_omx_component } static OMX_ERRORTYPE describeColorFormat(OMX_PTR params); - + bool m_buffer_error; }; #ifdef _MSM8974_ diff --git a/msm8974/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp b/msm8974/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp index 8b34951..8e8b98b 100644 --- a/msm8974/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp +++ b/msm8974/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp @@ -1,5 +1,5 @@ /*-------------------------------------------------------------------------- -Copyright (c) 2010 - 2016, The Linux Foundation. All rights reserved. +Copyright (c) 2010 - 2016, 2018, The Linux Foundation. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: @@ -596,7 +596,8 @@ omx_vdec::omx_vdec(): m_error_propogated(false), client_set_fps(false), m_last_rendered_TS(-1), m_queued_codec_config_count(0), - secure_scaling_to_non_secure_opb(false) + secure_scaling_to_non_secure_opb(false), + m_buffer_error(false) { /* Assumption is that , to begin with , we have all the frames with decoder */ DEBUG_PRINT_HIGH("In %u bit OMX vdec Constructor", (unsigned int)sizeof(long) * 8); @@ -4732,6 +4733,7 @@ OMX_ERRORTYPE omx_vdec::use_output_buffer( eRet = allocate_output_headers(); if (eRet == OMX_ErrorNone) eRet = allocate_extradata(); + output_use_buffer = true; } if (eRet == OMX_ErrorNone) { @@ -5348,6 +5350,7 @@ OMX_ERRORTYPE omx_vdec::allocate_input_buffer( unsigned i = 0; unsigned char *buf_addr = NULL; int pmem_fd = -1; + unsigned int align_size = 0; (void) hComp; (void) port; @@ -5407,8 +5410,10 @@ OMX_ERRORTYPE omx_vdec::allocate_input_buffer( int rc; DEBUG_PRINT_LOW("Allocate input Buffer"); #ifdef USE_ION + align_size = drv_ctx.ip_buf.buffer_size + 512; + align_size = (align_size + drv_ctx.ip_buf.alignment - 1)&(~(drv_ctx.ip_buf.alignment - 1)); drv_ctx.ip_buf_ion_info[i].ion_device_fd = alloc_map_ion_memory( - drv_ctx.ip_buf.buffer_size,drv_ctx.op_buf.alignment, + align_size, drv_ctx.op_buf.alignment, &drv_ctx.ip_buf_ion_info[i].ion_alloc_data, &drv_ctx.ip_buf_ion_info[i].fd_ion_data, secure_mode ? ION_SECURE #ifndef DISABLE_INPUT_BUFFER_CACHE @@ -5907,6 +5912,10 @@ OMX_ERRORTYPE omx_vdec::allocate_buffer(OMX_IN OMX_HANDLETYPE hC eRet = allocate_input_buffer(hComp,bufferHdr,port,appData,bytes); } } else if (port == OMX_CORE_OUTPUT_PORT_INDEX) { + if (output_use_buffer) { + DEBUG_PRINT_ERROR("Allocate output buffer not allowed after use buffer"); + return OMX_ErrorBadParameter; + } eRet = client_buffers.allocate_buffers_color_convert(hComp,bufferHdr,port, appData,bytes); } else { @@ -5967,6 +5976,7 @@ OMX_ERRORTYPE omx_vdec::free_buffer(OMX_IN OMX_HANDLETYPE hComp, (void) hComp; DEBUG_PRINT_LOW("In for decoder free_buffer"); + auto_lock l(buf_lock); if (m_state == OMX_StateIdle && (BITMASK_PRESENT(&m_flags ,OMX_COMPONENT_LOADING_PENDING))) { DEBUG_PRINT_LOW(" free buffer while Component in Loading pending"); @@ -5983,7 +5993,7 @@ OMX_ERRORTYPE omx_vdec::free_buffer(OMX_IN OMX_HANDLETYPE hComp, post_event(OMX_EventError, OMX_ErrorPortUnpopulated, OMX_COMPONENT_GENERATE_EVENT); - + m_buffer_error = true; return OMX_ErrorIncorrectStateOperation; } else if (m_state != OMX_StateInvalid) { DEBUG_PRINT_ERROR("Invalid state to free buffer,port lost Buffers"); @@ -6088,6 +6098,7 @@ OMX_ERRORTYPE omx_vdec::free_buffer(OMX_IN OMX_HANDLETYPE hComp, BITMASK_CLEAR((&m_flags),OMX_COMPONENT_LOADING_PENDING); post_event(OMX_CommandStateSet, OMX_StateLoaded, OMX_COMPONENT_GENERATE_EVENT); + m_buffer_error = false; } } return eRet; @@ -6261,6 +6272,11 @@ OMX_ERRORTYPE omx_vdec::empty_this_buffer_proxy(OMX_IN OMX_HANDLETYPE hComp, if (!temp_buffer || (temp_buffer - drv_ctx.ptr_inputbuffer) > (int)drv_ctx.ip_buf.actualcount) { return OMX_ErrorBadParameter; } + + if (BITMASK_ABSENT(&m_inp_bm_count, nPortIndex) || m_buffer_error) { + DEBUG_PRINT_ERROR("ETBProxy: ERROR: invalid buffer, nPortIndex %u", nPortIndex); + return OMX_ErrorBadParameter; + } /* If its first frame, H264 codec and reject is true, then parse the nal and get the profile. Based on this, reject the clip playback */ if (first_frame == 0 && codec_type_parse == CODEC_TYPE_H264 && @@ -6550,6 +6566,7 @@ OMX_ERRORTYPE omx_vdec::fill_this_buffer_proxy( struct vdec_bufferpayload *ptr_outputbuffer = NULL; struct vdec_output_frameinfo *ptr_respbuffer = NULL; + auto_lock l(buf_lock); nPortIndex = buffer-((OMX_BUFFERHEADERTYPE *)client_buffers.get_il_buf_hdr()); if (!bufferAdd || !bufferAdd->pBuffer || nPortIndex >= drv_ctx.op_buf.actualcount) { @@ -6558,6 +6575,10 @@ OMX_ERRORTYPE omx_vdec::fill_this_buffer_proxy( return OMX_ErrorBadParameter; } + if (BITMASK_ABSENT(&m_out_bm_count, nPortIndex) || m_buffer_error) { + DEBUG_PRINT_ERROR("FTBProxy: ERROR: invalid buffer, nPortIndex %u", nPortIndex); + return OMX_ErrorBadParameter; + } DEBUG_PRINT_LOW("FTBProxy: bufhdr = %p, bufhdr->pBuffer = %p", bufferAdd, bufferAdd->pBuffer); /*Return back the output buffer to client*/ @@ -7743,7 +7764,7 @@ int omx_vdec::async_message_process (void *context, void* message) output_respbuf->pic_type = PICTURE_TYPE_B; } - if (omx->output_use_buffer) + if (!omx->m_enable_android_native_buffers && omx->output_use_buffer) memcpy ( omxhdr->pBuffer, (void *) ((unsigned long)vdec_msg->msgdata.output_frame.bufferaddr + (unsigned long)vdec_msg->msgdata.output_frame.offset), -- cgit v1.2.3