戏剧性的一幕啊！

什么脚垫，什么nasa权威鉴定皇军无缺陷，什么米国陷害阴毛论。。。这下皇军不会真的现国际大眼，把忠心耿耿的慰安妇后代伪军一起卖了吧？

http://www_eetimes_com/document.asp?doc_id=1319903

Toyota Case: Single Bit Flip That Killed
Junko Yoshida
10/25/2013 03:35 PM EDT
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MADISON, Wis. — Could bad code kill a person? It could, and it apparently did.

The Bookout v Toyota Motor Corp. case, which blamed sudden acceleration in a Toyota Camry for a wrongful death, touches the issue directly.

This case -- one of several hundred contending that Toyota's vehicles inadvertently accelerated -- was the first in which a jury heard the plaintiffs' attorneys supporting their argument with extensive testimony from embedded systems experts. That testimony focused on Toyota's electronic throttle control system -- specifically, its source code.

The plaintiffs' attorneys closed their argument by saying that the electronics throttle control system caused the sudden acceleration of a 2005 Camry in a September 2007 accident that killed one woman and seriously injured another on an Oklahoma highway off-ramp. It wasn't loose floor mats, a sticky pedal, or driver error.

An Oklahoma judge announced that a settlement to avoid punitive damages had been reached Thursday evening. This was announced shortly after an Oklahoma County jury found Toyota liable for the crash and awarded $1.5 million of compensation to Jean Bookout, the driver, who was injured in the crash, and $1.5 million to the family of Barbara Schwarz, who died.

During the trial, embedded systems experts who reviewed Toyota's electronic throttle source code testified that they found Toyota's source code defective, and that it contains bugs -- including bugs that can cause unintended acceleration.

"We've demonstrated how as little as a single bit flip can cause the driver to lose control of the engine speed in real cars due to software malfunction that is not reliably detected by any fail-safe," Michael Barr, CTO and co-founder of Barr Group, told us in an exclusive interview. Barr served as an expert witness in this case.

A core group of seven experts, including four from Barr Group, analyzed the Toyota case. Their analysis ultimately resulted in Barr's 800-plus-page report.

In Toyota's own view, though, the automaker had been already exonerated when the National Highway Traffic Safety Administration closed its probe of Toyota models in February 2011. The NHTSA decision came after NASA investigated Toyota's electronic throttle control system and found no electronic causes of unintended acceleration during a 10-month review.

But not everyone in the embedded systems industry thinks NASA had enough time to come up with a complete report. Perhaps more significantly, in its report, NASA itself did not rule out the possibility of software having caused unintended acceleration.

The group of seven experts was given the task of picking up where the NASA investigation left off.

"We did a few things that NASA apparently did not have time to do," Barr said. For one thing, by looking within the real-time operating system, the experts identified "unprotected critical variables." They obtained and reviewed the source code for the "sub-CPU," and they "uncovered gaps and defects in the throttle fail safes."

Further, the team ran simulations in the Green Hills Simulator. "This confirmed tasks can die without the watchdog resetting the processor." His group also independently checked worst-case stack depth. "We found many big mistakes in the Toyota analysis that NASA relied on."

The experts demonstrated that "the defects we found were linked to unintended acceleration through vehicle testing," Barr said. "We also obtained and reviewed the source code for the black box and found that it can record false information about the driver's actions in the final seconds before a crash."

It's important to note Barr Group testimony led to a billion-dollar economic-loss settlement by Toyota last December. Because of that settlement, details of the technical discoveries made back then by the experts were not made public until the Oklahoma trial. The economic-loss settlement resolved hundreds of lawsuits claiming vehicles depreciated after the company issued recalls related to faulty acceleration. Toyota still faces lawsuits claiming injury or death related to the recalls.

Task X death
Now that the experts' testimony and findings have been made public through the Oklahoma trial, let's get into details. What defects were found in Toyota's electronic throttle control systems?

Barr said that the 2005 Camry L4 source code and in-vehicle tests by the experts confirmed that some critical variables are not protected from corruption, and sources of memory corruption are present. He believes that Toyota's engineers sought to protect numerous variables against software- and hardware-cause corruptions, but they failed to mirror several key critical variables, and they made no hardware protection available against bit flips.

Stack overflow and software bugs led to memory corruption, he said. And it turns out that the crux of the issue was these memory corruptions, which acted "like ricocheting bullets."

can't agree more
本帖由安卓客户端编辑于：2016-07-02 21:16:32

本帖由安卓客户端发布

我有个朋友以前专业挖坟，现在他坟头草都两米多高了。
本帖由安卓客户端发布

不能同意更多了
本帖由安卓客户端发布

从榕树下到各种盗版、意淫小说网站；
从水木清华到各种歇斯底里、无知的军事网站；
从一个知性、理智的天涯到另一个偏执、谩骂的天涯；
从老军迷密切关注超7计划到“八爷枪挑F22”，到“美f22被中国歼十击落过程十分恐怖”；
从反思对越自卫反击战到“印度高呼中国不可战胜”再到“奥巴马看后一言不发，高呼中国不可战胜”；
从“第三世界兄弟”到“阿三”到“倭寇”到“棒子”到“越南猴子”到“菲佣”；
从“中国人热爱和平”到“中日必有一战”，然后“中印必有一战”，之后“中美必有一战”，最后“中俄必有一战”；
。。。。。
。。。。。。。
三十年的发展，让国人越来越缺少敬畏和尊重。
教育普及了，识字的文盲越没少；大学扩招了，无知的却更多。而进入21世纪以来“屌丝”这个群体也堂而皇之的登堂入室。
网上农民工兄弟的比例越来越大，而网络的内容也越来越照顾大众群体。
两眼一抹黑的群体们最相信高手在民间、农民工的小聪明比博士的高科技更能解决问题、屌丝能完爆高富帅、中国能弯道超车。
所以什么“美国码农发现丰田代码缺陷“、”狂抽皇军伪军以及NASA大嘴巴”这种标题是给哪些人看的，大家想想就明白了。 本帖最后由 卡片儿机 于 2015-9-27 17:24 编辑

你看看b级车还有凯美瑞那样简陋的后悬挂吗？懂车吗？识字吗？

俺的混动不会遇到这问题，熄火状态下踩多少脚刹车都可以，直到动力电池没电

最关键的，即使油门踩到底，也能刹住车，不过是刹车距离远了点。

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盖世太保觉得这时候挖坟能自救？自掘坟墓吧？！

这些年日本的各个层面都大溃败

东芝笔记本富士通笔记本索尼全系松下全系富士相机日本电影电视剧日本汽车

唯一阳光的就是马自达

一万个全局变量，不出问题才怪，呼唤@森林酒吧

丰田车全系列都有前、后防撞钢梁，包括最小的雅力士。
最小的同级别车里，只有丰田雅力士与铃木雨燕有防撞钢梁。

也许是各人有不同偏好吧。长途没什么车的时候可以考虑。

反正我是不用。开车中， 我不喜欢右脚因为巡航脱离控制油门的驾驶状态，习惯手脚实时驾驶。

本帖最后由 燕啤大马甲 于 2015-4-2 00:07 编辑