From: NeilBrown <neilb@suse.com>
Date: Thu, 20 Apr 2017 02:40:05 +0000 (+1000)
Subject: Grow_continue_command: ensure 'content' is properly initialised.
X-Git-Tag: mdadm-4.1-rc1~178
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a250ce240f245df594570a5e25398680d403af67;p=thirdparty%2Fmdadm.git

Grow_continue_command: ensure 'content' is properly initialised.

Grow_continue_command() call verify_reshape_position(), which assumes
that info->sys_name is initialised.
'info' in verify_reshape_position() is 'content' in Grow_continue_command().

In the st->ss->external != 0 branch of that function, sysfs_init() is called
to initialize content->sys_name.
In the st->ss->external == 0 branch, ->sys_name is not initialized so
verify_reshape_position() will not do the right thing.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---

diff --git a/Grow.c b/Grow.c
index 15f4ed12..c6967ed1 100755
--- a/Grow.c
+++ b/Grow.c
@@ -5002,6 +5002,7 @@ int Grow_continue_command(char *devname, int fd,
 			goto Grow_continue_command_exit;
 		}
 		content = &array;
+		sysfs_init(content, fd, NULL);
 		/* Need to load a superblock.
 		 * FIXME we should really get what we need from
 		 * sysfs