From: Pan Bian bianpan2016@163.com
[ Upstream commit b95f83ab762dd6211351b9140f99f43644076ca8 ]
The MTD device reference is dropped via put_mtd_device, however its field ->index is read and passed to ubi_msg. To fix this, the patch moves the reference dropping after calling ubi_msg.
Signed-off-by: Pan Bian bianpan2016@163.com Reviewed-by: Boris Brezillon boris.brezillon@bootlin.com Signed-off-by: Richard Weinberger richard@nod.at Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/ubi/build.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index d2a726654ff11..c120c8761fcd2 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -1101,10 +1101,10 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway) ubi_wl_close(ubi); ubi_free_internal_volumes(ubi); vfree(ubi->vtbl); - put_mtd_device(ubi->mtd); vfree(ubi->peb_buf); vfree(ubi->fm_buf); ubi_msg(ubi, "mtd%d is detached", ubi->mtd->index); + put_mtd_device(ubi->mtd); put_device(&ubi->dev); return 0; }