When allocation of idata fails there was a null dereferece.
Signed-off-by: Vladimir Motyka <vladimir.mot...@gmail.com>
---
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 407836d..3dec493 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -266,10 +266,10 @@ static struct mmc_blk_ioc_data
*mmc_blk_ioctl_copy_from_user(
return idata;
copy_err:
- kfree(idata->buf);
+ if(idata)
+ kfree(idata->buf);
kfree(idata);
return ERR_PTR(err);
-
}
static int mmc_blk_ioctl_cmd(struct block_device *bdev,
--
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