YJN/selfpatch-slr
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Expanded subject to expose nested datapin flaw

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This commit is contained in:
York Jasper Niebuhr 2026-04-03 23:52:21 +02:00
parent affe371084
commit 1c11b8a5e9
3 changed files with 24 additions and 8 deletions
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10
subject/main.c
View File

@ -3,7 +3,9 @@
#include "task_struct.h"
int second_pid();
int third_pid();
const char* second_comm();
int subsecond_pid();
const char* subsecond_comm();
struct task_struct global = { .pid = 42, .comm = "main_global" };
@ -49,6 +51,10 @@ int main(void)
size_t myOffset = ((size_t)&((struct task_struct*)0)->tasks);
printf("DIY offsetof(task_struct, tasks) yiels %2llu\n", myOffset);
return second_pid() * third_pid();
printf("Global: pid=%d comm=\"%s\"\n", global.pid, global.comm);
printf("Second global: pid=%d comm=\"%s\"\n", second_pid(), second_comm());
printf("Subsecond global: pid=%d comm=\"%s\"\n", subsecond_pid(), subsecond_comm());
return 0;
}

11
subject/second.c
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@ -1,7 +1,12 @@
#include "task_struct.h"
static struct task_struct global = { .pid = 43, .comm = "third_global" };
static struct task_struct global = { .pid = 43, .comm = "second_global" };
int third_pid() {
return global.pid;
int second_pid() {
return global.pid;
}
const char* second_comm() {
return global.comm;
}

11
subject/sub/second.c
View File

@ -1,7 +1,12 @@
#include "task_struct.h"
static struct task_struct global = { .pid = 0, .comm = "second_global" };
static struct task_struct global = { .pid = 0, .comm = "subsecond_global" };
int second_pid() {
return global.pid;
int subsecond_pid() {
return global.pid;
}
const char* subsecond_comm() {
return global.comm;
}