cyyself
@cyyself
24 subscribers
85 photos
2 videos
1 file
34 links
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cyyself
24 subscribers
cyyself
Channel created
October 6
cyyself
Hello World
14 views
October 6
cyyself
Channel photo updated
October 6
cyyself
https://blog.cyyself.name/first-3-years-undergraduate/
11 views
October 7
cyyself
N卡网速快
11 views
October 8
cyyself
Forwarded from Yangyu Chen
11 views
October 8
cyyself
Microsoft ❤️ Linux
18 viewsedited  
October 10
cyyself
9 views
October 10
cyyself
Forwarded from Yangyu Chen
重庆电信这样好
9 views
October 10
cyyself
Forwarded from Yangyu Chen
5G万物互联就靠它了
10 views
October 10
cyyself
Forwarded from Yangyu Chen
给物联网设备非常充分的自由权
8 views
October 10
cyyself
Forwarded from Yangyu Chen
不过我觉得自由好
8 views
October 10
cyyself
Forwarded from Yangyu Chen
入站防火墙就应该用户设备负责
8 views
October 10
cyyself
Forwarded from Yangyu Chen
不应该运营商负责
8 views
October 10
cyyself
找到了一直困扰我的macOS外接显示器卡顿的原因
8 viewsedited  
October 11
cyyself
11 viewsedited  
October 11
cyyself
https://dgideas.net/2021/asahi-linux-for-apple-silicon/
11 views
October 11
cyyself
Forwarded from Yangyu Chen
12 views
October 12
cyyself
Forwarded from Yangyu Chen
cd ..
12 views
October 12
cyyself
Forwarded from Aha! Well-behaved twd2
您的成功，彻彻底底
12 views
October 12
cyyself
Forwarded from Aha! Well-behaved twd2
我们用5.14.11 stable吧
12 views
October 12
cyyself
Forwarded from Soha Jin
114514
12 views
October 12
cyyself
解决oh my zsh的git插件在磁盘慢的机器上访问Linux文件夹过慢的问题git config --add oh-my-zsh.hide-dirty 1
13 viewsedited  
October 12
cyyself
学校机器真好
19 views
October 12
cyyself
14 views
October 12
cyyself
https://twitter.com/baibai_lee_/status/1447455981974089731
22 viewsedited  
October 12
cyyself
Forwarded from Nick Cao | 想吃狐狐
每次有人问有啥linux only的好用的程序
17 views
October 12
cyyself
Forwarded from Nick Cao | 想吃狐狐
我就说virt-manager
17 views
October 12
cyyself
我今天才知道EFI Executable镜像用的是PE格式，还以为混进了微软的什么东西
16 viewsedited  
October 13
cyyself
Forwarded from TripleY Channel (Wayne Yeh)
《计算机协会在网络安全周》
13 views
October 13
cyyself
This media is not supported in your browser
VIEW IN TELEGRAM
15 views
October 13
cyyself
Forwarded from Yangyu Chen
哈哈，我人工SLAAC
14 views
October 13
cyyself
Forwarded from Yangyu Chen
先wireshark看arp包，确定网段
15 views
October 13
cyyself
Forwarded from Yangyu Chen
然后根据范围随机ip地址
15 views
October 13
cyyself
Forwarded from Yangyu Chen
若冲突，则更换
15 views
October 13
cyyself
但是在重庆大学主教学楼这种到处一个二层跑多个IPv4网段的场景就不知道那个网段好了
21 views
October 13
cyyself
今日晚餐
21 viewsedited  
October 13
cyyself
https://blog.cyyself.name/solve-clang-llvm-compile-kernel-leaving-lbb-makes-call-trace-hard-to-view/
16 views
October 13
cyyself
https://www.zhihu.com/question/277048283/answer/2168684704
Zhihu
为什么OI界很少有人用跳表?? - 知乎
跳跃链表及其应用是非常热门的问题，深入了解其中奥秘大有裨益，不吹了，快开始品尝这美味的知识吧！跳跃…
16 views
October 14
cyyself
今天可能是撞鬼了。本来自己写了个简单的循环简单测试CPU单核性能差距，结果发现Debian sid目前的gcc编译出来的程序和Ubuntu 21.04目前的gcc编译出来的程序执行时间在AMD Zen 3架构的CPU上差了一倍，在5800X和5700G上均能复现，objdump看了下发现循环部分的指令是一致的，非常迷惑，各位有兴趣的话可以研究一下。或许可能对Zen 3架构的Cache和分支预测逆向研究有帮助。
23 viewsedited  
October 14
cyyself
mihuo-speed.zip
5 KB
21 views
October 14
cyyself
最近每天都被各种开发板折磨的焦头烂额
16 views
October 15
cyyself
在实验室里总是分不清自己是学长还是学弟
17 views
October 15
cyyself
https://github.com/saaramar/IOMFB_integer_overflow_poc
17 viewsedited  
October 16
cyyself
Forwarded from leedagee
USTC HackerGAME 2021 未成年人是不是只能在五六日晚上20~21打3个小时？
18 views
October 16
cyyself
“因此可防止恶意入侵者或正在利用新学的只是到处试探的网络专业的学生”

想起来我校老校区OSPFv3都是可以直接播任意IP，我还播过自己的2a0e:aa06:470::/44，且试过了全校范围内可通。新校区很多地方没通v6还是OSPFv2大部分地方可以播当前B段下的任意IP。
18 viewsedited  
October 16
cyyself
今日修D1板子的驱动，现象太迷惑了。网卡IPv4通但是异常延迟、丢包、DUP，IPv6不通，SD卡能挂载ext4能写文件，然后写完的卡umount后插到电脑上文件系统损坏。
14 views
October 16
cyyself
太迷惑了，GCC编译的D1内核是好的，Clang不开LTO的内核是坏的，Clang编译的LTO THIN的内核是坏的，Clang编译的LTO Full内核勉强能用，Clang编译的LTO Full+CFI的内核是坏的。
20 views
October 16
cyyself
“用clang再开lto再开cfi，还是没merge主线的rv d1板板代码，简直是坟头蹦迪”
17 views
October 16
cyyself
今日尝试UBSAN
13 views
October 17
cyyself
Review D1板板代码的时候注意到了sbi_dma_sync函数有问题，经2老师提醒这里有Bug，然后我仔细看了下，发现它在调用asm_volatile的时候没有把a0寄存器保护起来，2老师也做了测试，发现Clang+LLVM生成的汇编果然把参数转移到了a2寄存器，而gcc编译的则是一直在a0所以没问题。经过该修复，终于可以正确使用Clang+LLVM编译D1内核了。
13 viewsedited  
October 17
cyyself
D1板板上Clang LTO Full+CFI也正常了，热烈祝贺！🎉
14 views
October 17
cyyself
Forwarded from Aha! Well-behaved twd2
cyy怎么想到看这个鬼函数的
15 views
October 17
cyyself
Forwarded from Yangyu Chen
因为2老师昨天提到那个网络的问题
15 views
October 17
cyyself
Forwarded from Yangyu Chen
我觉得肯定是Cache一致性有关
15 views
October 17
cyyself
Forwarded from Yangyu Chen
就在找Cache一致性维护相关的东西
15 views
October 17
cyyself
Forwarded from Aha! Well-behaved twd2
网卡乱写数据
14 views
October 17