In the unlikely case that the screen is tiny, and smaller than the font width, it leads to a divide by 0:
draw_line_with_wrap() chars_per_row = sb->width / font->width = 0 line_wrap.len = line->len % chars_per_row; This will trigger a divide by 0 Signed-off-by: Jocelyn Falempe <[email protected]> --- drivers/gpu/drm/drm_panic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c index 69be9d835ccf..bc5158683b2b 100644 --- a/drivers/gpu/drm/drm_panic.c +++ b/drivers/gpu/drm/drm_panic.c @@ -523,7 +523,7 @@ static void draw_panic_static_kmsg(struct drm_scanout_buffer *sb) struct drm_panic_line line; int yoffset; - if (!font) + if (!font || font->width > sb->width) return; yoffset = sb->height - font->height - (sb->height % font->height) / 2; -- 2.51.0
