Checking patch nptl/pthread_cond_wait.c...
Hunk #1 succeeded at 379 (offset 13 lines).
error: while searching for:
	  uint64_t g1_start = __condvar_load_g1_start_relaxed (cond);
	  unsigned int lowseq = (g1_start & 1) == g ? signals : g1_start & ~1U;

	  /* Spin-wait first.
	     Note that spinning first without checking whether a timeout
	     passed might lead to what looks like a spurious wake-up even
	     though we should return ETIMEDOUT (e.g., if the caller provides
	     an absolute timeout that is clearly in the past).  However,
	     (1) spurious wake-ups are allowed, (2) it seems unlikely that a
	     user will (ab)use pthread_cond_wait as a check for whether a
	     point in time is in the past, and (3) spinning first without
	     having to compare against the current time seems to be the right
	     choice from a performance perspective for most use cases.  */
	  unsigned int spin = maxspin;
	  while (spin > 0 && ((int)(signals - lowseq) < 2))
	    {
	      /* Check that we are not spinning on a group that's already
		 closed.  */
	      if (seq < (g1_start >> 1))
		break;

	      /* TODO Back off.  */

	      /* Reload signals.  See above for MO.  */
	      signals = atomic_load_acquire (cond->__data.__g_signals + g);
	      g1_start = __condvar_load_g1_start_relaxed (cond);
	      lowseq = (g1_start & 1) == g ? signals : g1_start & ~1U;
	      spin--;
	    }

	  if (seq < (g1_start >> 1))
	    {
	      /* If the group is closed already,

error: patch failed: nptl/pthread_cond_wait.c:425
error: nptl/pthread_cond_wait.c: patch does not apply