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ASAN: Support coroutine context switching and stack tracing (#4153)

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For coroutine, we should use `__sanitizer_start_switch_fiber` which
similar to`VALGRIND_STACK_REGISTER`, see
https://github.com/google/sanitizers/issues/189#issuecomment-1346243598
for details. If not fix this, asan will output warning:

```
==72269==WARNING: ASan is ignoring requested __asan_handle_no_return: stack type: default top: 0x00016f638000; bottom 0x000106bec000; size: 0x000068a4c000 (1755627520)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189
```

It will cause asan failed to get the stack, see
`research/st/asan-switch.cpp` for example:

```
==71611==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x000103600733 at pc 0x0001009d3d7c bp 0x000100b4bd40 sp 0x000100b4bd38
WRITE of size 1 at 0x000103600733 thread T0
    #0 0x1009d3d78 in foo(void*) asan-switch.cpp:13
```

After fix this issue, it should provide the full stack when crashing:

```
==73437==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x000103300733 at pc 0x000100693d7c bp 0x00016f76f550 sp 0x00016f76f548
WRITE of size 1 at 0x000103300733 thread T0
    #0 0x100693d78 in foo(void*) asan-switch.cpp:13
    #1 0x100693df4 in main asan-switch.cpp:23
    #2 0x195aa20dc  (<unknown module>)
```

For primordial coroutine, if not set the stack by
`st_set_primordial_stack`, then the stack is NULL and asan can't get the
stack tracing. Note that it's optional and only make it fail to display
the stack information, no other errors.

---

Co-authored-by: john <hondaxiao@tencent.com>
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Winlin 2024-08-22 17:12:39 +08:00 • committed by GitHub
parent 55610cf689
commit 8f48a0e2d1
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21
trunk/research/st/hello-thread.cpp Normal file
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/*
g++ hello-thread.cpp ../../objs/st/libst.a -g -O0 -o hello-thread && ./hello-thread
*/
#include <stdio.h>
#include "../../objs/st/st.h"
void* foo(void *args) {
for (int i = 0; ; i++) {
st_sleep(1);
printf("#%d: main: working\n", i);
}
return NULL;
}
int main() {
st_init();
st_thread_create(foo, NULL, 0, 0);
st_thread_exit(NULL);
return 0;
}