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Code Issues Releases Activity

nvdrv, video_core: Don't index out of bounds when given invalid syncpoint ID

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- Use .at() instead of raw indexing when dealing with untrusted indices.

- For the special case of WaitFence with syncpoint id UINT32_MAX,
  instead of crashing, log an error and ignore.  This is what I get when
  running Super Mario Maker 2.
This commit is contained in:
comex 2020-11-22 15:48:23 -05:00
parent 5d1447897a
commit e8b2fd21d8
2 changed files with 20 additions and 13 deletions
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4
src/core/hle/service/nvdrv/syncpoint_manager.h
View file

@ -37,7 +37,7 @@ public:
* @returns The lower bound for the specified syncpoint.
*/
u32 GetSyncpointMin(u32 syncpoint_id) const {
return syncpoints[syncpoint_id].min.load(std::memory_order_relaxed);
return syncpoints.at(syncpoint_id).min.load(std::memory_order_relaxed);
}
/**
@ -46,7 +46,7 @@ public:
* @returns The upper bound for the specified syncpoint.
*/
u32 GetSyncpointMax(u32 syncpoint_id) const {
return syncpoints[syncpoint_id].max.load(std::memory_order_relaxed);
return syncpoints.at(syncpoint_id).max.load(std::memory_order_relaxed);
}
/**

29
src/video_core/gpu.cpp
View file

@ -95,22 +95,29 @@ void GPU::WaitFence(u32 syncpoint_id, u32 value) {
if (!is_async) {
return;
}
if (syncpoint_id == UINT32_MAX) {
// TODO: Research what this does.
LOG_ERROR(HW_GPU, "Waiting for syncpoint -1 not implemented");
return;
}
MICROPROFILE_SCOPE(GPU_wait);
std::unique_lock lock{sync_mutex};
sync_cv.wait(lock, [=, this] { return syncpoints[syncpoint_id].load() >= value; });
sync_cv.wait(lock, [=, this] { return syncpoints.at(syncpoint_id).load() >= value; });
}
void GPU::IncrementSyncPoint(const u32 syncpoint_id) {
syncpoints[syncpoint_id]++;
auto& syncpoint = syncpoints.at(syncpoint_id);
syncpoint++;
std::lock_guard lock{sync_mutex};
sync_cv.notify_all();
if (!syncpt_interrupts[syncpoint_id].empty()) {
u32 value = syncpoints[syncpoint_id].load();
auto it = syncpt_interrupts[syncpoint_id].begin();
while (it != syncpt_interrupts[syncpoint_id].end()) {
auto& interrupt = syncpt_interrupts.at(syncpoint_id);
if (!interrupt.empty()) {
u32 value = syncpoint.load();
auto it = interrupt.begin();
while (it != interrupt.end()) {
if (value >= *it) {
TriggerCpuInterrupt(syncpoint_id, *it);
it = syncpt_interrupts[syncpoint_id].erase(it);
it = interrupt.erase(it);
continue;
}
it++;
@ -119,22 +126,22 @@ void GPU::IncrementSyncPoint(const u32 syncpoint_id) {
}
u32 GPU::GetSyncpointValue(const u32 syncpoint_id) const {
return syncpoints[syncpoint_id].load();
return syncpoints.at(syncpoint_id).load();
}
void GPU::RegisterSyncptInterrupt(const u32 syncpoint_id, const u32 value) {
auto& interrupt = syncpt_interrupts[syncpoint_id];
auto& interrupt = syncpt_interrupts.at(syncpoint_id);
bool contains = std::any_of(interrupt.begin(), interrupt.end(),
[value](u32 in_value) { return in_value == value; });
if (contains) {
return;
}
syncpt_interrupts[syncpoint_id].emplace_back(value);
interrupt.emplace_back(value);
}
bool GPU::CancelSyncptInterrupt(const u32 syncpoint_id, const u32 value) {
std::lock_guard lock{sync_mutex};
auto& interrupt = syncpt_interrupts[syncpoint_id];
auto& interrupt = syncpt_interrupts.at(syncpoint_id);
const auto iter =
std::find_if(interrupt.begin(), interrupt.end(),
[value](u32 interrupt_value) { return value == interrupt_value; });