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From: Hongyan Xia <hx242@xen.org>
To: xen-devel@lists.xenproject.org
Cc: "Hongyan Xia" <hongyxia@amazon.com>,
	"Jan Beulich" <jbeulich@suse.com>,
	"Andrew Cooper" <andrew.cooper3@citrix.com>,
	"Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>
Subject: [PATCH] x86/mm: fix wrong unmap call
Date: Thu, 22 Apr 2021 18:42:30 +0100	[thread overview]
Message-ID: <a59a28ee297d683933d057cc2a4d0d26ebd90bc9.1619113334.git.hongyxia@amazon.com> (raw)

From: Hongyan Xia <hongyxia@amazon.com>

Commit 'x86/mm: switch to new APIs in modify_xen_mappings' applied the
hunk of the unmap call to map_pages_to_xen() which was wrong and clearly
should have been at the end of modify_xen_mappings(). Fix.

Fixes: dd68f2e49bea ("x86/mm: switch to new APIs in modify_xen_mappings")

Signed-off-by: Hongyan Xia <hongyxia@amazon.com>
Tested-by: Julien Grall <jgrall@amazon.com>
---
 xen/arch/x86/mm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 50229e38d384..84e3ccf47e2a 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -5532,7 +5532,6 @@ int map_pages_to_xen(
 
  out:
     L3T_UNLOCK(current_l3page);
-    unmap_domain_page(pl2e);
     unmap_domain_page(pl3e);
     unmap_domain_page(pl2e);
     return rc;
@@ -5830,6 +5829,7 @@ int modify_xen_mappings(unsigned long s, unsigned long e, unsigned int nf)
  out:
     L3T_UNLOCK(current_l3page);
     unmap_domain_page(pl3e);
+    unmap_domain_page(pl2e);
     return rc;
 }
 
-- 
2.17.1



                 reply	other threads:[~2021-04-22 17:43 UTC|newest]

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