Re: [PATCH] ksmbd: fix use-after-free and NULL deref in smb_grant_oplock()

[ChenXiaoSong <chenxiaosong@chenxiaosong.com>]

Hi Werner,

Thanks for your patch. It seems the changes below are not included. Do 
you have any follow-up patches that haven't been submitted yet?

Thanks,
ChenXiaoSong <chenxiaosong@chenxiaosong.com>

在 2026/3/17 10:18, Werner Kasselman 写道:
> - Preallocate lease_table via alloc_lease_table() before opinfo_add()
>    so add_lease_global_list() becomes infallible after publication.
> - Keep the original m_op_list publication order (opinfo_add before
>    lease list) so concurrent opens via same_client_has_lease() and
>    opinfo_get_list() still see the in-flight grant.
> - Use opinfo_put() instead of __free_opinfo() on err_out so that
>    the RCU-deferred free path is used.
> 
> This also requires splitting add_lease_global_list() to take a
> preallocated lease_table and changing its return type from int to void,
> since it can no longer fail.