om: Xiao Ni [ Upstream commit 05c8de4f09b08e97c6ecb190dcec0e68b167cb03 ] A return value of 0 is treaded as successful lock acquisition. In fact, a return value of 1 means getting the lock successfully. Link: https://lore.kernel.org/linux-raid/20260127073951.17248-1-xni@redhat.com Fixes: 9e59d609763f ("md: call del_gendisk in control path") Reported-by: Bart Van Assche Closes: https://lore.kernel.org/linux-raid/20250611073108.25463-1-xni@redhat.com/T/#mfa369ef5faa4aa58e13e6d9fdb88aecd862b8f2f Signed-off-by: Xiao Ni Reviewed-by: Bart Van Assche Reviewed-by: Li Nan Signed-off-by: Yu Kuai Signed-off-by: Sasha Levin --- drivers/md/md.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/md.h b/drivers/md/md.h index 6985f2829bbd6..3bfbee595156d 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -737,8 +737,8 @@ static inline int mddev_trylock(struct mddev *mddev) int ret; ret = mutex_trylock(&mddev->reconfig_mutex); - if (!ret && test_bit(MD_DELETED, &mddev->flags)) { - ret = -ENODEV; + if (ret && test_bit(MD_DELETED, &mddev->flags)) { + ret = 0; mutex_unlock(&mddev->reconfig_mutex); } return ret; -- 2.51.0[PATCH 6.19 059/781] md: fix return value of mddev_trylockGreg Kroah-Hartman undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefined undefinedµC†›