Re: [PATCH -next] dm: make sure dm_table is binded before queue request

在 2022/2/9 10:55, Zhang Yi 写道:

We found a NULL pointer dereference problem when using dm-mpath target. The problem is if we submit IO between loading and binding the table, we could neither get a valid dm_target nor a valid dm table when submitting request in dm_mq_queue_rq(). BIO based dm target could handle this case in dm_submit_bio(). This patch fix this by checking the valid live table before submitting request.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com> --- drivers/md/dm-rq.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)

Looks good to me