Unverified Commit 4f42e95a authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!7965 nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells 

Merge Pull Request from: @ci-robot 
 
PR sync from: Cai Xinchen <caixinchen1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/CZGJDYGA4ELFU36HTBADOL7YAW7GABEZ/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9RD7J 
 
Link:https://gitee.com/openeuler/kernel/pulls/7965

 

Reviewed-by: default avatarLiu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents c49c5abf adcd445b

drivers/nvmem/core.c

+2 −1
Original line number Diff line number Diff line
@@ -1061,6 +1061,7 @@ static void nvmem_shift_read_buffer_in_place(struct nvmem_cell *cell, void *buf) 
		*p-- = 0;



	/* clear msb bits if any leftover in the last byte */

	if (cell->nbits % BITS_PER_BYTE)

		*p &= GENMASK((cell->nbits % BITS_PER_BYTE) - 1, 0);

}