dm raid: protect md_stop() with 'reconfig_mutex'

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[ Upstream commit 7d5fff8982 ]

__md_stop_writes() and __md_stop() will modify many fields that are
protected by 'reconfig_mutex', and all the callers will grab
'reconfig_mutex' except for md_stop().

Also, update md_stop() to make certain 'reconfig_mutex' is held using
lockdep_assert_held().

Fixes: 9d09e663d5 ("dm: raid456 basic support")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Yu Kuai 2023-07-08 17:21:53 +08:00 • committed by Greg Kroah-Hartman

parent e08db3f85d

commit ce114218f7

2 changed files with 5 additions and 1 deletions

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drivers/md/dm-raid.c

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2

drivers/md/md.c

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