10 Oct
2021
10 Oct
'21
7:57 a.m.
Hi Zheyu,
On Sun, Oct 10, 2021 at 06:42:28AM +0000, Zheyu Ma wrote:
savagefb and some other drivers call kfree to free 'info->pixmap.addr' even after calling unregister_framebuffer, which may cause double free.
Fix this by setting 'fb_info->pixmap.addr' to NULL after kfree in unregister_framebuffer.
This is a nice general way to fix it that benefits all drivers. Applied to drm-misc-next as this is not an urgent fix.
Sam