From: Andreas Schwab <schwab@suse.de>
Date: Thu, 6 Jul 2023 11:34:19 +0000 (+0200)
Subject: linux-user: Make sure initial brk(0) is page-aligned
X-Git-Tag: qemu-xen-4.18.0-rc5~55
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=0167759c9a9ffe89b1479cd95486fdc687ceb677;p=qemu-xen.git

linux-user: Make sure initial brk(0) is page-aligned

Fixes: 86f04735ac ("linux-user: Fix brk() to release pages")
Signed-off-by: Andreas Schwab <schwab@suse.de>
Message-Id: <mvmpm55qnno.fsf@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit d28b3c90cfad1a7e211ae2bce36ecb9071086129)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 71559f81d4..cb5d72867a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -806,7 +806,7 @@ static abi_ulong brk_page;
 
 void target_set_brk(abi_ulong new_brk)
 {
-    target_brk = new_brk;
+    target_brk = TARGET_PAGE_ALIGN(new_brk);
     brk_page = HOST_PAGE_ALIGN(target_brk);
 }