3.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Minchan Kim <[email protected]>

commit db5d711e2db776f18219b033e5dc4fb7e4264dd7 upstream.

zram_meta_alloc could fail so caller should check it.  Otherwise, your
system will hang.

Signed-off-by: Minchan Kim <[email protected]>
Acked-by: Jerome Marchand <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/staging/zram/zram_drv.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -621,6 +621,8 @@ static ssize_t disksize_store(struct dev
 
        disksize = PAGE_ALIGN(disksize);
        meta = zram_meta_alloc(disksize);
+       if (!meta)
+               return -ENOMEM;
        down_write(&zram->init_lock);
        if (zram->init_done) {
                up_write(&zram->init_lock);


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