md/raid10: fix overflow of md/safe_mode_delay
authorLi Nan <linan122@huawei.com>
Mon, 22 May 2023 07:25:33 +0000 (15:25 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 19 Jul 2023 14:20:57 +0000 (16:20 +0200)
commitb5cb16d31b8a6bacd6848ba347ee17221fa401b9
tree672317ff2b70cf80cd6d9b58aacc54d054a4de8d
parentbe1a3ec63a840cc9e59a033acf154f56255699a1
md/raid10: fix overflow of md/safe_mode_delay

[ Upstream commit 6beb489b2eed25978523f379a605073f99240c50 ]

There is no input check when echo md/safe_mode_delay in safe_delay_store().
And msec might also overflow when HZ < 1000 in safe_delay_show(), Fix it by
checking overflow in safe_delay_store() and use unsigned long conversion in
safe_delay_show().

Fixes: 72e02075a33f ("md: factor out parsing of fixed-point numbers")
Signed-off-by: Li Nan <linan122@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230522072535.1523740-2-linan666@huaweicloud.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/md/md.c