[lkml]   [2022]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] dispnv50: atom: fix an incorrect NULL check on list iterator
On Sun, 27 Mar 2022 at 08:39, Xiaomeng Tong <> wrote:
> The bug is here:
> return encoder;
> The list iterator value 'encoder' will *always* be set and non-NULL
> by drm_for_each_encoder_mask(), so it is incorrect to assume that the
> iterator value will be NULL if the list is empty or no element found.
> Otherwise it will bypass some NULL checks and lead to invalid memory
> access passing the check.
> To fix this bug, just return 'encoder' when found, otherwise return

Isn't this covered by the upcoming list* iterator rework [1] or is
this another iterator glitch?
IMHO we should be looking at fixing the implementation and not the
hundreds of users through the kernel.


 \ /
  Last update: 2022-03-27 18:00    [W:0.040 / U:0.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site