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--- contracts/Namev2_prx11.asm	2019-04-19 00:49:46.409038062 +0800
+++ contracts/Namev2_prx11.petersburg.asm	2019-04-19 00:49:17.116352277 +0800
@@ -25,7 +25,7 @@
     /* "contracts/Namev2_prx11.sol":170:188  owner = msg.sender */
   dup1
   sload
-  not(sub(exp(0x02, 0xa0), 0x01))
+  not(sub(shl(0xa0, 0x01), 0x01))
   and
     /* "contracts/Namev2_prx11.sol":178:188  msg.sender */

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--- TWLKH-description.txt	2018-08-20 21:49:59.361145866 +0800
+++ TWLKH-description.txt.hacked	2018-08-20 22:12:40.319784822 +0800
@@ -17,23 +17,6 @@
 社團另有 slack 聊天室位於
 https://twlinuxkernelhackers.slack.com/
 
-欲加入社團FB messenger群組請洽管理員。
-
-Kernel 內容繁雜，目前依據貼文的內容用tag在 Facebook 上面分類（字母排序）
-

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/* x86-64 program to test wether stack access without setting the stack poitner register would cause SEGFAULTs
 * $ ./stack-and-sp          # just access stack adjacent memory until SEGFAULT. 
 * $ ./stack-and-sp --set-sp # set stack pointer register before accessing memory.
 *
 * Output:
 * stack-and-sp: do_set_sp: 1
 * RLIMIT_STACK: 8192/unlimited (cur/max)
 * sp0: 0x7ffd5fdd3000
 * sp: 0x7ffd5f5d7000, size: 8176K
 */

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$ gdb -q -x syscall-restart-after-handler.gdb
Breakpoint 1 at 0x400920: file syscall-restart-after-handler.c, line 13.
pre blocking read on pipe

Breakpoint 1, sig_handler (sig=14, info=0x7fffffffc230, ctx=0x7fffffffc100) at syscall-restart-after-handler.c:13
warning: Source file is more recent than executable.
13		fprintf(stderr, "%s: caught signal %d (%s) \n", program_name, sig, strsignal(sig));
#0  sig_handler (sig=14, info=0x7fffffffc230, ctx=0x7fffffffc100) at syscall-restart-after-handler.c:13
#1  <signal handler called>
#2  0x00007ffff7b02fc1 in __GI___libc_read (fd=3, buf=buf@entry=0x7fffffffc6b7, nbytes=nbytes@entry=1) at ../sysdeps/unix/sysv/linux/read.c:27

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/* Burn some CPU time then segfault */

int main()
{
	volatile int i;
	for (i=0; i>=0; i++)
		;
	*(volatile char*)0;
	return 0;
}

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