From: Cong Wang <xiyou.wangc...@gmail.com> Date: Fri, 28 Jun 2019 11:03:40 -0700
> idr_get_next_ul() is problematic by design, it can't handle > the following overflow case well on 32-bit CPU: > > u32 id = UINT_MAX; > idr_alloc_u32(&id); > while (idr_get_next_ul(&id) != NULL) > id++; > > when 'id' overflows and becomes 0 after UINT_MAX, the loop > goes infinite. > > Fix this by eliminating external users of idr_get_next_ul() > and migrating them to idr_for_each_entry_continue_ul(). And > add an additional parameter for these iteration macros to detect > overflow properly. > > Please merge this through networking tree, as all the users > are in networking subsystem. Series applied, thanks Cong.
