On 08/27/2017 05:05 PM, Greg Kroah-Hartman wrote:
On Sun, Aug 27, 2017 at 03:56:46PM +0200, Jan H. Schönherr wrote:
If a zero for the number of colums or rows manages to slip through,
gotoxy() will underflow vc->vc_pos, causing the next action on the
referenced memory to end with a page fault.
Make the check in vgacon more pessimistic to prevent that. Also change
a similar check in the x86 boot code with a similar problem.
Signed-off-by: Jan H. Schönherr <jschoenh@xxxxxxxxx>
---
Let me know, if I should split this into two patches.
arch/x86/boot/compressed/misc.c | 3 +--
drivers/video/console/vgacon.c | 5 ++---
2 files changed, 3 insertions(+), 5 deletions(-)
Why send this patch to me?
Because there isn't a clear maintainer: The drivers/video catch-all in MAINTAINERS
is captioned as "Framebuffer layer", but all recent patches to vgacon.c went through
your hands.
And yes, of course you have to split this up, these two files have
nothing to do with each other...
Okay, then ignore this patch, and I'll split this down. I'll send the vgacon.c part
through Bartlomiej Zolnierkiewicz, then.
Regards
Jan
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