From 70983a5f3956881f8832eb4a4c1ad19c1b59c8ea Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 21 Aug 2012 22:43:47 -0400
Subject: [PATCH] --- yaml --- r: 328981 b: refs/heads/master c:
 179e037fc1370288188cb1f90b81156d75a3cb2d h: refs/heads/master i:   328979:
 349d9fd3800b27fc34245bbffa6f1ac3065c4b04 v: v3

---
 [refs]          | 2 +-
 trunk/fs/exec.c | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 85c63655a041..0e7dc210903d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c3c073f808b22dfae15ef8412b6f7b998644139a
+refs/heads/master: 179e037fc1370288188cb1f90b81156d75a3cb2d
diff --git a/trunk/fs/exec.c b/trunk/fs/exec.c
index 3fc74681cc6c..beb05a95e4a3 100644
--- a/trunk/fs/exec.c
+++ b/trunk/fs/exec.c
@@ -2066,6 +2066,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
 	int retval = 0;
 	int flag = 0;
 	int ispipe;
+	struct files_struct *displaced;
 	bool need_nonrelative = false;
 	static atomic_t core_dump_count = ATOMIC_INIT(0);
 	struct coredump_params cprm = {
@@ -2219,6 +2220,12 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs)
 			goto close_fail;
 	}
 
+	/* get us an unshared descriptor table; almost always a no-op */
+	retval = unshare_files(&displaced);
+	if (retval)
+		goto close_fail;
+	if (displaced)
+		put_files_struct(displaced);
 	retval = binfmt->core_dump(&cprm);
 	if (retval)
 		current->signal->group_exit_code |= 0x80;