zram: avoid double free in function zram_bvec_write()
zram: avoid double free in function zram_bvec_write()

commit 65c484609a3b25c35e4edcd5f2c38f98f5226093 upstream.

When doing a patial write and the whole page is filled with zero,
zram_bvec_write() will free uncmem twice.

Signed-off-by: Jiang Liu <68ee766e574f18b34b683085865827393efe88bd@huawei.com>
Acked-by: Minchan Kim <eee62f459f15dcddf87a8df69e8328e2a2562028@kernel.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>


TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas