import glibc-2.34-122.el9_5

SOURCES/glibc-RHEL-50101-2.patch

+commit 9a27b566b2048f599048f2f4afe1cce06c4ef43d
+Author: Miguel Martín <mmartinv@redhat.com>
+Date:   Tue Jul 16 17:14:56 2024 +0200
+
+    malloc: avoid global locks in tst-aligned_alloc-lib.c
+    
+    Make sure the DSO used by aligned_alloc/calloc/malloc tests does not get
+    a global lock on multithreaded tests.
+    Reviewed-by: Arjun Shankar <arjun@redhat.com>
+
+diff --git a/malloc/tst-aligned_alloc-lib.c b/malloc/tst-aligned_alloc-lib.c
+index 0205df5acf6297a5..9ef1f839c101a6ae 100644
+--- a/malloc/tst-aligned_alloc-lib.c
++++ b/malloc/tst-aligned_alloc-lib.c
+@@ -17,37 +17,38 @@
+    License along with the GNU C Library; see the file COPYING.LIB.  If
+    not, see <https://www.gnu.org/licenses/>.  */
+ 
+-#include <array_length.h>
+ #include <libc-symbols.h>
+ #include <stdlib.h>
++#include <time.h>
+ 
+ extern void *__libc_malloc (size_t size);
+ extern void *__libc_calloc (size_t n, size_t size);
+ 
++__thread unsigned int seed = 0;
++
+ int aligned_alloc_count = 0;
+ int libc_malloc_count = 0;
+ int libc_calloc_count = 0;
+ 
+-/* Get a random alignment value.  Biased towards the smaller values.  Must be
+-   a power of 2. */
+-static size_t get_random_alignment (void)
+-{
+-  size_t aligns[] = {
+-    1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384
+-  };
+-
+-  return aligns[random () % array_length (aligns)];
+-}
+-
+-static void *get_random_alloc (size_t size)
++static void *
++get_random_alloc (size_t size)
+ {
+   void *retval;
+   size_t align;
++  struct timespec tp;
++
++  if (seed == 0)
++    {
++      clock_gettime (CLOCK_REALTIME, &tp);
++      seed = tp.tv_nsec;
++    }
+ 
+-  switch (random() % 3)
+-  {
++  switch (rand_r (&seed) % 3)
++    {
+     case 1:
+-      align = get_random_alignment ();
++      /* Get a random alignment value.  Biased towards the smaller
++       * values up to 16384. Must be a power of 2. */
++      align = 1 << rand_r (&seed) % 15;
+       retval = aligned_alloc (align, size);
+       aligned_alloc_count++;
+       break;
+@@ -59,13 +60,13 @@ static void *get_random_alloc (size_t size)
+       retval = __libc_malloc (size);
+       libc_malloc_count++;
+       break;
+-  }
++    }
+ 
+   return retval;
+ }
+ 
+-
+-void * __random_malloc (size_t size)
++void *
++__random_malloc (size_t size)
+ {
+   return get_random_alloc (size);
+ }