commit: 4474ca42e2577563a919fd3ed782e2ec55bf11a2 From: NeilBrown <[email protected]> Date: Mon, 19 Mar 2012 12:46:37 +1100 Subject: md/bitmap: ensure to load bitmap when creating via sysfs.
When commit 69e51b449d383e (md/bitmap: separate out loading a bitmap...) created bitmap_load, it missed calling it after bitmap_create when a bitmap is created through the sysfs interface. So if a bitmap is added this way, we don't allocate memory properly and can crash. This is suitable for any -stable release since 2.6.35. Cc: [email protected] Signed-off-by: NeilBrown <[email protected]> --- drivers/md/bitmap.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index cdf36b1..239af9a 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1904,6 +1904,8 @@ location_store(struct mddev *mddev, const char *buf, size_t len) if (mddev->pers) { mddev->pers->quiesce(mddev, 1); rv = bitmap_create(mddev); + if (!rv) + rv = bitmap_load(mddev); if (rv) { bitmap_destroy(mddev); mddev->bitmap_info.offset = 0; -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
