Indirect call in vesafb driver
- Date: Wed, 13 Mar 2019 17:54:18 +0300
- From: Alexander Pateenok <pateenoc@xxxxxxxxx>
- Subject: Indirect call in vesafb driver
There're several indirect calls in inline assembly in vesafb driver
(drivers/video/fbdev/vesafb.c), and these calls cannot be automatically
changed to retpolines. It's in vesafb_pan_display():
73 __asm__ __volatile__(
74 "call *(%%edi)"
and in vesa_setpalette():
113 __asm__ __volatile__(
114 "call *(%%esi)"
Is there need to use CALL_NOSPEC ?