mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-13 09:54:36 -05:00
122 lines
5.9 KiB
Diff
122 lines
5.9 KiB
Diff
From f9b598c828134f60235b6ec13b3e2cc292d0a64d Mon Sep 17 00:00:00 2001
|
|
From: Ray Essick <essick@google.com>
|
|
Date: Wed, 14 Feb 2024 11:10:41 -0600
|
|
Subject: [PATCH] fix buffer overrun in eas_wtengine
|
|
|
|
avoid a buffer overrun in eas_wtengine.
|
|
Check buffer limits during application of gain
|
|
Clip calculated length in eas_wtsynth
|
|
|
|
Bug: 317780080
|
|
Test: POC with bug
|
|
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:6b66e7665dbcd891ff23081c13ab0b1637bb1dda)
|
|
backporting fix from main
|
|
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5d93ba096d54c157d106559c045d46357e51d158)
|
|
Merged-In: I3609d6a36d89b26ae7eb3ae84cbe7772f6c3bee0
|
|
Change-Id: I3609d6a36d89b26ae7eb3ae84cbe7772f6c3bee0
|
|
---
|
|
arm-wt-22k/lib_src/eas_wtengine.c | 24 ++++++++++++++++++++++++
|
|
arm-wt-22k/lib_src/eas_wtsynth.c | 12 +++++++++++-
|
|
2 files changed, 35 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/arm-wt-22k/lib_src/eas_wtengine.c b/arm-wt-22k/lib_src/eas_wtengine.c
|
|
index b1ee749..dc8d864 100644
|
|
--- a/arm-wt-22k/lib_src/eas_wtengine.c
|
|
+++ b/arm-wt-22k/lib_src/eas_wtengine.c
|
|
@@ -99,6 +99,10 @@ void WT_VoiceGain (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
return;
|
|
+ } else if (numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d", numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
pMixBuffer = pWTIntFrame->pMixBuffer;
|
|
pInputBuffer = pWTIntFrame->pAudioBuffer;
|
|
@@ -196,6 +200,10 @@ void WT_Interpolate (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
return;
|
|
+ } else if (numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d", numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
pOutputBuffer = pWTIntFrame->pAudioBuffer;
|
|
|
|
@@ -297,6 +305,10 @@ void WT_InterpolateNoLoop (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
return;
|
|
+ } else if (numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d", numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
pOutputBuffer = pWTIntFrame->pAudioBuffer;
|
|
|
|
@@ -397,6 +409,10 @@ void WT_VoiceFilter (S_FILTER_CONTROL *pFilter, S_WT_INT_FRAME *pWTIntFrame)
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
return;
|
|
+ } else if (numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d", numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
pAudioBuffer = pWTIntFrame->pAudioBuffer;
|
|
|
|
@@ -465,6 +481,10 @@ void WT_VoiceFilter (S_FILTER_CONTROL *pFilter, S_WT_INT_FRAME *pWTIntFrame)
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
return;
|
|
+ } else if (numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d", numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
pOutputBuffer = pWTIntFrame->pAudioBuffer;
|
|
phaseInc = pWTIntFrame->frame.phaseIncrement;
|
|
@@ -613,6 +633,10 @@ void WT_InterpolateMono (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
return;
|
|
+ } else if (numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d", numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
pMixBuffer = pWTIntFrame->pMixBuffer;
|
|
|
|
diff --git a/arm-wt-22k/lib_src/eas_wtsynth.c b/arm-wt-22k/lib_src/eas_wtsynth.c
|
|
index 74f78f5..ea1fe78 100644
|
|
--- a/arm-wt-22k/lib_src/eas_wtsynth.c
|
|
+++ b/arm-wt-22k/lib_src/eas_wtsynth.c
|
|
@@ -484,7 +484,12 @@ EAS_BOOL WT_CheckSampleEnd (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame, E
|
|
/*lint -e{703} use shift for performance */
|
|
numSamples = (numSamples << NUM_PHASE_FRAC_BITS) - (EAS_I32) pWTVoice->phaseFrac;
|
|
if (pWTIntFrame->frame.phaseIncrement) {
|
|
- pWTIntFrame->numSamples = 1 + (numSamples / pWTIntFrame->frame.phaseIncrement);
|
|
+ EAS_I32 oldMethod = 1 + (numSamples / pWTIntFrame->frame.phaseIncrement);
|
|
+ pWTIntFrame->numSamples =
|
|
+ (numSamples + pWTIntFrame->frame.phaseIncrement - 1) / pWTIntFrame->frame.phaseIncrement;
|
|
+ if (oldMethod != pWTIntFrame->numSamples) {
|
|
+ ALOGE("b/317780080 old %ld new %ld", oldMethod, pWTIntFrame->numSamples);
|
|
+ }
|
|
} else {
|
|
pWTIntFrame->numSamples = numSamples;
|
|
}
|
|
@@ -492,6 +497,11 @@ EAS_BOOL WT_CheckSampleEnd (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame, E
|
|
ALOGE("b/26366256");
|
|
android_errorWriteLog(0x534e4554, "26366256");
|
|
pWTIntFrame->numSamples = 0;
|
|
+ } else if (pWTIntFrame->numSamples > BUFFER_SIZE_IN_MONO_SAMPLES) {
|
|
+ ALOGE("b/317780080 clip numSamples %ld -> %d",
|
|
+ pWTIntFrame->numSamples, BUFFER_SIZE_IN_MONO_SAMPLES);
|
|
+ android_errorWriteLog(0x534e4554, "317780080");
|
|
+ pWTIntFrame->numSamples = BUFFER_SIZE_IN_MONO_SAMPLES;
|
|
}
|
|
|
|
/* sound will be done this frame */
|