* [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2
@ 2022-07-01 20:22 Helge Deller
2022-07-01 20:22 ` [PATCH v2 1/4] fbcon: Disallow setting font bigger than screen size Helge Deller
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Helge Deller @ 2022-07-01 20:22 UTC (permalink / raw)
To: daniel.vetter, linux-fbdev, geert, dri-devel
This series fixes possible out-of-bound memory accesses when users trigger
screen resolutions changes with invalid input parameters, e.g. reconfigures
screen which is smaller than the current font size, or if the virtual screen
size is smaller than the physical screen size.
Changes in v2:
- don't fixup wrong xy_vres values, but instead print warning.
- add Reviewed-by tags, minor variable name fixes
Helge Deller (4):
fbcon: Disallow setting font bigger than screen size
fbcon: Prevent that screen size is smaller than font size
fbmem: Prevent invalid virtual screen sizes in fb_set_var()
fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()
drivers/video/fbdev/core/fbcon.c | 33 ++++++++++++++++++++++++++++++++
drivers/video/fbdev/core/fbmem.c | 16 +++++++++++++++-
include/linux/fbcon.h | 4 ++++
3 files changed, 52 insertions(+), 1 deletion(-)
--
2.35.3
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v2 1/4] fbcon: Disallow setting font bigger than screen size
2022-07-01 20:22 [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
@ 2022-07-01 20:22 ` Helge Deller
2022-07-01 20:22 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
2022-07-01 20:22 ` [PATCH v2 3/4] fbmem: Prevent invalid virtual screen sizes in fb_set_var() Helge Deller
2 siblings, 0 replies; 7+ messages in thread
From: Helge Deller @ 2022-07-01 20:22 UTC (permalink / raw)
To: daniel.vetter, linux-fbdev, geert, dri-devel
Prevent that users set a font size which is bigger than the physical screen.
It's unlikely this may happen (because screens are usually much larger than the
fonts and each font char is limited to 32x32 pixels), but it may happen on
smaller screens/LCD displays.
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org # v4.14+
---
drivers/video/fbdev/core/fbcon.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index c4e91715ef00..a33532564393 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2469,6 +2469,11 @@ static int fbcon_set_font(struct vc_data *vc, struct console_font *font,
if (charcount != 256 && charcount != 512)
return -EINVAL;
+ /* font bigger than screen resolution ? */
+ if (w > FBCON_SWAP(info->var.rotate, info->var.xres, info->var.yres) ||
+ h > FBCON_SWAP(info->var.rotate, info->var.yres, info->var.xres))
+ return -EINVAL;
+
/* Make sure drawing engine can handle the font */
if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
!(info->pixmap.blit_y & (1 << (font->height - 1))))
--
2.35.3
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size
2022-07-01 20:22 [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
2022-07-01 20:22 ` [PATCH v2 1/4] fbcon: Disallow setting font bigger than screen size Helge Deller
@ 2022-07-01 20:22 ` Helge Deller
2022-07-01 20:22 ` [PATCH v2 3/4] fbmem: Prevent invalid virtual screen sizes in fb_set_var() Helge Deller
2 siblings, 0 replies; 7+ messages in thread
From: Helge Deller @ 2022-07-01 20:22 UTC (permalink / raw)
To: daniel.vetter, linux-fbdev, geert, dri-devel
We need to prevent that users configure a screen size which is smaller than the
currently selected font size. Otherwise rendering chars on the screen will
access memory outside the graphics memory region.
This patch adds a new function fbcon_modechange_possible() which
implements this check and which later may be extended with other checks
if necessary. The new function is called from the FBIOPUT_VSCREENINFO
ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
for a too small screen size.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.4+
---
drivers/video/fbdev/core/fbcon.c | 28 ++++++++++++++++++++++++++++
drivers/video/fbdev/core/fbmem.c | 4 +++-
include/linux/fbcon.h | 4 ++++
3 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index a33532564393..14b0ab51744f 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2736,6 +2736,34 @@ void fbcon_update_vcs(struct fb_info *info, bool all)
}
EXPORT_SYMBOL(fbcon_update_vcs);
+/* let fbcon check if it supports a new screen resolution */
+int fbcon_modechange_possible(struct fb_info *info, struct fb_var_screeninfo *var)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ struct vc_data *vc;
+ int i;
+
+ WARN_CONSOLE_UNLOCKED();
+
+ if (!ops)
+ return -EINVAL;
+
+ /* prevent setting a screen size which is smaller than font size */
+ for (i = first_fb_vc; i <= last_fb_vc; i++) {
+ vc = vc_cons[i].d;
+ if (!vc || vc->vc_mode != KD_TEXT ||
+ registered_fb[con2fb_map[i]] != info)
+ continue;
+
+ if (vc->vc_font.width > FBCON_SWAP(var->rotate, var->xres, var->yres) ||
+ vc->vc_font.height > FBCON_SWAP(var->rotate, var->yres, var->xres))
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(fbcon_modechange_possible);
+
int fbcon_mode_deleted(struct fb_info *info,
struct fb_videomode *mode)
{
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index afa2863670f3..160389365a36 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1106,7 +1106,9 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
return -EFAULT;
console_lock();
lock_fb_info(info);
- ret = fb_set_var(info, &var);
+ ret = fbcon_modechange_possible(info, &var);
+ if (!ret)
+ ret = fb_set_var(info, &var);
if (!ret)
fbcon_update_vcs(info, var.activate & FB_ACTIVATE_ALL);
unlock_fb_info(info);
diff --git a/include/linux/fbcon.h b/include/linux/fbcon.h
index ff5596dd30f8..2382dec6d6ab 100644
--- a/include/linux/fbcon.h
+++ b/include/linux/fbcon.h
@@ -15,6 +15,8 @@ void fbcon_new_modelist(struct fb_info *info);
void fbcon_get_requirement(struct fb_info *info,
struct fb_blit_caps *caps);
void fbcon_fb_blanked(struct fb_info *info, int blank);
+int fbcon_modechange_possible(struct fb_info *info,
+ struct fb_var_screeninfo *var);
void fbcon_update_vcs(struct fb_info *info, bool all);
void fbcon_remap_all(struct fb_info *info);
int fbcon_set_con2fb_map_ioctl(void __user *argp);
@@ -33,6 +35,8 @@ static inline void fbcon_new_modelist(struct fb_info *info) {}
static inline void fbcon_get_requirement(struct fb_info *info,
struct fb_blit_caps *caps) {}
static inline void fbcon_fb_blanked(struct fb_info *info, int blank) {}
+static inline int fbcon_modechange_possible(struct fb_info *info,
+ struct fb_var_screeninfo *var) { return 0; }
static inline void fbcon_update_vcs(struct fb_info *info, bool all) {}
static inline void fbcon_remap_all(struct fb_info *info) {}
static inline int fbcon_set_con2fb_map_ioctl(void __user *argp) { return 0; }
--
2.35.3
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 3/4] fbmem: Prevent invalid virtual screen sizes in fb_set_var()
2022-07-01 20:22 [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
2022-07-01 20:22 ` [PATCH v2 1/4] fbcon: Disallow setting font bigger than screen size Helge Deller
2022-07-01 20:22 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
@ 2022-07-01 20:22 ` Helge Deller
2 siblings, 0 replies; 7+ messages in thread
From: Helge Deller @ 2022-07-01 20:22 UTC (permalink / raw)
To: daniel.vetter, linux-fbdev, geert, dri-devel
Prevent that drivers configure a virtual screen resolution smaller than
the physical screen resolution. This is important, because otherwise we
may access memory outside of the graphics memory area.
Give a kernel WARNing and show the driver name to help locating the buggy
driver.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.4+
---
drivers/video/fbdev/core/fbmem.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 160389365a36..e8f06d26803c 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1016,6 +1016,18 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
if (ret)
return ret;
+ /* make sure virtual resolution >= physical resolution */
+ if (WARN_ON(var->xres_virtual < var->xres)) {
+ pr_warn("fbcon: Fix up invalid xres %d for %s\n",
+ var->xres_virtual, info->fix.id);
+ var->xres_virtual = var->xres;
+ }
+ if (WARN_ON(var->yres_virtual < var->yres)) {
+ pr_warn("fbcon: Fix up invalid yres %d for %s\n",
+ var->yres_virtual, info->fix.id);
+ var->yres_virtual = var->yres;
+ }
+
if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW)
return 0;
--
2.35.3
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2
@ 2022-07-01 20:23 Helge Deller
2022-07-01 20:23 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
0 siblings, 1 reply; 7+ messages in thread
From: Helge Deller @ 2022-07-01 20:23 UTC (permalink / raw)
To: geert, dri-devel, daniel.vetter, linux-fbdev
This series fixes possible out-of-bound memory accesses when users trigger
screen resolutions changes with invalid input parameters, e.g. reconfigures
screen which is smaller than the current font size, or if the virtual screen
size is smaller than the physical screen size.
Changes in v2:
- don't fixup wrong xy_vres values, but instead print warning.
- add Reviewed-by tags, minor variable name fixes
Helge Deller (4):
fbcon: Disallow setting font bigger than screen size
fbcon: Prevent that screen size is smaller than font size
fbmem: Prevent invalid virtual screen sizes in fb_set_var()
fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()
drivers/video/fbdev/core/fbcon.c | 33 ++++++++++++++++++++++++++++++++
drivers/video/fbdev/core/fbmem.c | 16 +++++++++++++++-
include/linux/fbcon.h | 4 ++++
3 files changed, 52 insertions(+), 1 deletion(-)
--
2.35.3
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size
2022-07-01 20:23 [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
@ 2022-07-01 20:23 ` Helge Deller
2022-07-03 8:50 ` Geert Uytterhoeven
0 siblings, 1 reply; 7+ messages in thread
From: Helge Deller @ 2022-07-01 20:23 UTC (permalink / raw)
To: geert, dri-devel, daniel.vetter, linux-fbdev
We need to prevent that users configure a screen size which is smaller than the
currently selected font size. Otherwise rendering chars on the screen will
access memory outside the graphics memory region.
This patch adds a new function fbcon_modechange_possible() which
implements this check and which later may be extended with other checks
if necessary. The new function is called from the FBIOPUT_VSCREENINFO
ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
for a too small screen size.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.4+
---
drivers/video/fbdev/core/fbcon.c | 28 ++++++++++++++++++++++++++++
drivers/video/fbdev/core/fbmem.c | 4 +++-
include/linux/fbcon.h | 4 ++++
3 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index a33532564393..14b0ab51744f 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2736,6 +2736,34 @@ void fbcon_update_vcs(struct fb_info *info, bool all)
}
EXPORT_SYMBOL(fbcon_update_vcs);
+/* let fbcon check if it supports a new screen resolution */
+int fbcon_modechange_possible(struct fb_info *info, struct fb_var_screeninfo *var)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ struct vc_data *vc;
+ int i;
+
+ WARN_CONSOLE_UNLOCKED();
+
+ if (!ops)
+ return -EINVAL;
+
+ /* prevent setting a screen size which is smaller than font size */
+ for (i = first_fb_vc; i <= last_fb_vc; i++) {
+ vc = vc_cons[i].d;
+ if (!vc || vc->vc_mode != KD_TEXT ||
+ registered_fb[con2fb_map[i]] != info)
+ continue;
+
+ if (vc->vc_font.width > FBCON_SWAP(var->rotate, var->xres, var->yres) ||
+ vc->vc_font.height > FBCON_SWAP(var->rotate, var->yres, var->xres))
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(fbcon_modechange_possible);
+
int fbcon_mode_deleted(struct fb_info *info,
struct fb_videomode *mode)
{
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index afa2863670f3..160389365a36 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1106,7 +1106,9 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
return -EFAULT;
console_lock();
lock_fb_info(info);
- ret = fb_set_var(info, &var);
+ ret = fbcon_modechange_possible(info, &var);
+ if (!ret)
+ ret = fb_set_var(info, &var);
if (!ret)
fbcon_update_vcs(info, var.activate & FB_ACTIVATE_ALL);
unlock_fb_info(info);
diff --git a/include/linux/fbcon.h b/include/linux/fbcon.h
index ff5596dd30f8..2382dec6d6ab 100644
--- a/include/linux/fbcon.h
+++ b/include/linux/fbcon.h
@@ -15,6 +15,8 @@ void fbcon_new_modelist(struct fb_info *info);
void fbcon_get_requirement(struct fb_info *info,
struct fb_blit_caps *caps);
void fbcon_fb_blanked(struct fb_info *info, int blank);
+int fbcon_modechange_possible(struct fb_info *info,
+ struct fb_var_screeninfo *var);
void fbcon_update_vcs(struct fb_info *info, bool all);
void fbcon_remap_all(struct fb_info *info);
int fbcon_set_con2fb_map_ioctl(void __user *argp);
@@ -33,6 +35,8 @@ static inline void fbcon_new_modelist(struct fb_info *info) {}
static inline void fbcon_get_requirement(struct fb_info *info,
struct fb_blit_caps *caps) {}
static inline void fbcon_fb_blanked(struct fb_info *info, int blank) {}
+static inline int fbcon_modechange_possible(struct fb_info *info,
+ struct fb_var_screeninfo *var) { return 0; }
static inline void fbcon_update_vcs(struct fb_info *info, bool all) {}
static inline void fbcon_remap_all(struct fb_info *info) {}
static inline int fbcon_set_con2fb_map_ioctl(void __user *argp) { return 0; }
--
2.35.3
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size
2022-07-01 20:23 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
@ 2022-07-03 8:50 ` Geert Uytterhoeven
0 siblings, 0 replies; 7+ messages in thread
From: Geert Uytterhoeven @ 2022-07-03 8:50 UTC (permalink / raw)
To: Helge Deller; +Cc: DRI Development, Daniel Vetter, Linux Fbdev development list
Hi Helge,
On Fri, Jul 1, 2022 at 10:23 PM Helge Deller <deller@gmx.de> wrote:
> We need to prevent that users configure a screen size which is smaller than the
> currently selected font size. Otherwise rendering chars on the screen will
> access memory outside the graphics memory region.
>
> This patch adds a new function fbcon_modechange_possible() which
> implements this check and which later may be extended with other checks
> if necessary. The new function is called from the FBIOPUT_VSCREENINFO
> ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
> for a too small screen size.
>
> Signed-off-by: Helge Deller <deller@gmx.de>
> Cc: stable@vger.kernel.org # v5.4+
Thanks for your patch!
> --- a/drivers/video/fbdev/core/fbcon.c
> +++ b/drivers/video/fbdev/core/fbcon.c
> @@ -2736,6 +2736,34 @@ void fbcon_update_vcs(struct fb_info *info, bool all)
> }
> EXPORT_SYMBOL(fbcon_update_vcs);
>
> +/* let fbcon check if it supports a new screen resolution */
> +int fbcon_modechange_possible(struct fb_info *info, struct fb_var_screeninfo *var)
> +{
> + struct fbcon_ops *ops = info->fbcon_par;
> + struct vc_data *vc;
> + int i;
unsigned int i
> +
> + WARN_CONSOLE_UNLOCKED();
> +
> + if (!ops)
> + return -EINVAL;
This means the frame buffer device is not used as a text console
(i.e. the text console is mapped to a different frame buffer device),
hence it should return success.
> +
> + /* prevent setting a screen size which is smaller than font size */
> + for (i = first_fb_vc; i <= last_fb_vc; i++) {
> + vc = vc_cons[i].d;
> + if (!vc || vc->vc_mode != KD_TEXT ||
> + registered_fb[con2fb_map[i]] != info)
> + continue;
> +
> + if (vc->vc_font.width > FBCON_SWAP(var->rotate, var->xres, var->yres) ||
> + vc->vc_font.height > FBCON_SWAP(var->rotate, var->yres, var->xres))
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(fbcon_modechange_possible);
EXPORT_SYMBOL_GPL()?
No idea why most of fbcon uses the non-GPL variant.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size
@ 2022-07-03 8:50 ` Geert Uytterhoeven
0 siblings, 0 replies; 7+ messages in thread
From: Geert Uytterhoeven @ 2022-07-03 8:50 UTC (permalink / raw)
To: Helge Deller; +Cc: Daniel Vetter, Linux Fbdev development list, DRI Development
Hi Helge,
On Fri, Jul 1, 2022 at 10:23 PM Helge Deller <deller@gmx.de> wrote:
> We need to prevent that users configure a screen size which is smaller than the
> currently selected font size. Otherwise rendering chars on the screen will
> access memory outside the graphics memory region.
>
> This patch adds a new function fbcon_modechange_possible() which
> implements this check and which later may be extended with other checks
> if necessary. The new function is called from the FBIOPUT_VSCREENINFO
> ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
> for a too small screen size.
>
> Signed-off-by: Helge Deller <deller@gmx.de>
> Cc: stable@vger.kernel.org # v5.4+
Thanks for your patch!
> --- a/drivers/video/fbdev/core/fbcon.c
> +++ b/drivers/video/fbdev/core/fbcon.c
> @@ -2736,6 +2736,34 @@ void fbcon_update_vcs(struct fb_info *info, bool all)
> }
> EXPORT_SYMBOL(fbcon_update_vcs);
>
> +/* let fbcon check if it supports a new screen resolution */
> +int fbcon_modechange_possible(struct fb_info *info, struct fb_var_screeninfo *var)
> +{
> + struct fbcon_ops *ops = info->fbcon_par;
> + struct vc_data *vc;
> + int i;
unsigned int i
> +
> + WARN_CONSOLE_UNLOCKED();
> +
> + if (!ops)
> + return -EINVAL;
This means the frame buffer device is not used as a text console
(i.e. the text console is mapped to a different frame buffer device),
hence it should return success.
> +
> + /* prevent setting a screen size which is smaller than font size */
> + for (i = first_fb_vc; i <= last_fb_vc; i++) {
> + vc = vc_cons[i].d;
> + if (!vc || vc->vc_mode != KD_TEXT ||
> + registered_fb[con2fb_map[i]] != info)
> + continue;
> +
> + if (vc->vc_font.width > FBCON_SWAP(var->rotate, var->xres, var->yres) ||
> + vc->vc_font.height > FBCON_SWAP(var->rotate, var->yres, var->xres))
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(fbcon_modechange_possible);
EXPORT_SYMBOL_GPL()?
No idea why most of fbcon uses the non-GPL variant.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2022-07-04 16:18 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-07-01 20:22 [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
2022-07-01 20:22 ` [PATCH v2 1/4] fbcon: Disallow setting font bigger than screen size Helge Deller
2022-07-01 20:22 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
2022-07-01 20:22 ` [PATCH v2 3/4] fbmem: Prevent invalid virtual screen sizes in fb_set_var() Helge Deller
2022-07-01 20:23 [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
2022-07-01 20:23 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
2022-07-03 8:50 ` Geert Uytterhoeven
2022-07-03 8:50 ` Geert Uytterhoeven
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