From 2c5cd07828ad76c332e3bedc29fc641809e85396 Mon Sep 17 00:00:00 2001
From: Qi Wang <interwq@gwu.edu>
Date: Tue, 3 Mar 2026 11:55:23 +0000
Subject: [PATCH] rallocx path: only set errno on the realloc case.

PR:		291677
Obtained from:	jemalloc (commit 83b075789b4239035931c1ee212576d00153bbf0)
Fixes:		c43cad871720 ("jemalloc: Merge from jemalloc 5.3.0 vendor branch")
MFC after:	3 days
Pull Request:	https://github.com/freebsd/freebsd-src/pull/2059
---
 contrib/jemalloc/src/jemalloc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/contrib/jemalloc/src/jemalloc.c b/contrib/jemalloc/src/jemalloc.c
index 352c18870e0..edf23b9801b 100644
--- a/contrib/jemalloc/src/jemalloc.c
+++ b/contrib/jemalloc/src/jemalloc.c
@@ -3561,7 +3561,9 @@ do_rallocx(void *ptr, size_t size, int flags, bool is_realloc) {
 
 	return p;
 label_oom:
-	set_errno(ENOMEM);
+	if (is_realloc) {
+		set_errno(ENOMEM);
+	}
 	if (config_xmalloc && unlikely(opt_xmalloc)) {
 		malloc_write("<jemalloc>: Error in rallocx(): out of memory\n");
 		abort();