From 97ba273b505763325efd802dc3a9562dbba79579 Mon Sep 17 00:00:00 2001
From: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Date: Tue, 1 Feb 2022 22:39:02 +0000
Subject: [PATCH] linux: __get_nprocs_sched: do not feed CPU_COUNT_S with
 garbage [BZ #28850]

Pass the actual number of bytes returned by the kernel.

Fixes: 33099d72e41c ("linux: Simplify get_nprocs")
Reviewed-by: Dmitry V. Levin <ldv@altlinux.org>
---
 sysdeps/unix/sysv/linux/getsysstats.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index 4798cc3..c98c8ce 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -44,7 +44,7 @@ __get_nprocs_sched (void)
   int r = INTERNAL_SYSCALL_CALL (sched_getaffinity, 0, cpu_bits_size,
 				 cpu_bits);
   if (r > 0)
-    return CPU_COUNT_S (cpu_bits_size, (cpu_set_t*) cpu_bits);
+    return CPU_COUNT_S (r, (cpu_set_t*) cpu_bits);
   else if (r == -EINVAL)
     /* The input buffer is still not enough to store the number of cpus.  This
        is an arbitrary values assuming such systems should be rare and there
-- 
1.8.3.1