75 lines
1.8 KiB
Diff
75 lines
1.8 KiB
Diff
Source: Adélie Linux
|
|
|
|
Fixes crashes on some musl platforms.
|
|
|
|
diff --git a/thread_pthread.c b/thread_pthread.c
|
|
index 951885ffa0..cf90321d1d 100644
|
|
--- a/thread_pthread.c
|
|
+++ b/thread_pthread.c
|
|
@@ -552,9 +552,6 @@ hpux_attr_getstackaddr(const pthread_attr_t *attr, void **addr)
|
|
# define MAINSTACKADDR_AVAILABLE 0
|
|
# endif
|
|
#endif
|
|
-#if MAINSTACKADDR_AVAILABLE && !defined(get_main_stack)
|
|
-# define get_main_stack(addr, size) get_stack(addr, size)
|
|
-#endif
|
|
|
|
#ifdef STACKADDR_AVAILABLE
|
|
/*
|
|
@@ -632,6 +629,55 @@ get_stack(void **addr, size_t *size)
|
|
return 0;
|
|
#undef CHECK_ERR
|
|
}
|
|
+
|
|
+#if defined(__linux__) && !defined(__GLIBC__) && defined(HAVE_GETRLIMIT)
|
|
+
|
|
+#ifndef PAGE_SIZE
|
|
+#include <unistd.h>
|
|
+#define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
|
|
+#endif
|
|
+
|
|
+static int
|
|
+get_main_stack(void **addr, size_t *size)
|
|
+{
|
|
+ size_t start, end, limit, prevend = 0;
|
|
+ struct rlimit r;
|
|
+ FILE *f;
|
|
+ char buf[PATH_MAX+80], s[8];
|
|
+ int n;
|
|
+ STACK_GROW_DIR_DETECTION;
|
|
+
|
|
+ f = fopen("/proc/self/maps", "re");
|
|
+ if (!f)
|
|
+ return -1;
|
|
+ n = 0;
|
|
+ while (fgets(buf, sizeof buf, f)) {
|
|
+ n = sscanf(buf, "%zx-%zx %*s %*s %*s %*s %7s", &start, &end, s);
|
|
+ if (n >= 2) {
|
|
+ if (n == 3 && strcmp(s, "[stack]") == 0)
|
|
+ break;
|
|
+ prevend = end;
|
|
+ }
|
|
+ n = 0;
|
|
+ }
|
|
+ fclose(f);
|
|
+ if (n == 0)
|
|
+ return -1;
|
|
+
|
|
+ limit = 100 << 20; /* 100MB stack limit */
|
|
+ if (getrlimit(RLIMIT_STACK, &r)==0 && r.rlim_cur < limit)
|
|
+ limit = r.rlim_cur & -PAGE_SIZE;
|
|
+ if (limit > end) limit = end;
|
|
+ if (prevend < end - limit) prevend = end - limit;
|
|
+ if (start > prevend) start = prevend;
|
|
+ *addr = IS_STACK_DIR_UPPER() ? (void *)start : (void *)end;
|
|
+ *size = end - start;
|
|
+ return 0;
|
|
+}
|
|
+#else
|
|
+# define get_main_stack(addr, size) get_stack(addr, size)
|
|
+#endif
|
|
+
|
|
#endif
|
|
|
|
static struct {
|