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linux/drivers/video/fbdev
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Shigeru Yoshida a5a923038d fbdev: fbcon: Properly revert changes when vc_resize() failed 
fbcon_do_set_font() calls vc_resize() when font size is changed.
However, if if vc_resize() failed, current implementation doesn't
revert changes for font size, and this causes inconsistent state.

syzbot reported unable to handle page fault due to this issue [1].
syzbot's repro uses fault injection which cause failure for memory
allocation, so vc_resize() failed.

This patch fixes this issue by properly revert changes for font
related date when vc_resize() failed.

Link: https://syzkaller.appspot.com/bug?id=3443d3a1fa6d964dd7310a0cb1696d165a3e07c4 [1]
Reported-by: syzbot+a168dbeaaa7778273c1b@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
CC: stable@vger.kernel.org # 5.15+
2022-08-26 19:56:18 +02:00
..
aty
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
core
fbdev: fbcon: Properly revert changes when vc_resize() failed
2022-08-26 19:56:18 +02:00
geode
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
i810
video: fbdev: i810: use true,false for bool variables
2020-05-06 19:29:10 +02:00
intelfb
video: fbdev: intelfb: Initialize value of stolen size
2022-06-20 14:33:05 +02:00
kyro
video: fbdev: kyro: Error out if 'lineclock' equals zero
2022-04-11 08:23:49 +02:00
matrox
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
mb862xx
video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h
2022-04-04 08:55:23 +02:00
mmp
video: fbdev: mmp: replace usage of found with dedicated list iterator variable
2022-04-12 22:06:10 +02:00
nvidia
video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow
2022-01-29 22:24:25 +01:00
omap
fbdev: omap: Remove unnecessary print function dev_err()
2022-08-24 21:53:41 +02:00
omap2
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
riva
video: fbdev: riva: Error out if 'pixclock' equals zero
2021-07-26 20:06:03 +02:00
savage
video: fbdev: savagefb: make a variable local
2022-01-30 19:37:03 +01:00
sis
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
vermilion
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
via
video: fbdev: via: check the return value of kstrdup()
2022-02-22 09:00:09 +01:00
68328fb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
acornfb.c
video: fbdev: acornfb: remove free_unused_pages()
2021-02-24 13:38:31 -08:00
acornfb.h
…
amba-clcd.c
video: fbdev: amba-clcd: Fix refcount leak bugs
2022-07-26 08:56:22 +02:00
amifb.c
video: fbdev: amiga: Simplify amifb_pan_display()
2022-07-18 07:54:17 +02:00
arcfb.c
video: fbdev: arcfb: remove redundant initialization of variable err
2021-07-21 13:09:21 +02:00
arkfb.c
video: fbdev: arkfb: Check the size of screen before memset_io()
2022-08-05 18:44:15 +02:00
asiliantfb.c
video: fbdev: asiliantfb: remove redundant assignment to variable Ftarget
2022-01-29 23:04:57 +01:00
atafb_iplan2p2.c
…
atafb_iplan2p4.c
…
atafb_iplan2p8.c
…
atafb_mfb.c
…
atafb_utils.h
…
atafb.c
video: fbdev: atari: Remove backward bug-compatibility
2022-07-18 07:56:18 +02:00
atafb.h
…
atmel_lcdfb.c
video: fbdev: atmel_lcdfb: fix an error code in atmel_lcdfb_probe()
2022-01-30 19:38:35 +01:00
au1100fb.c
video: fbdev: au1100fb: Drop unnecessary NULL ptr check
2022-06-20 20:19:50 +02:00
au1100fb.h
video: fbdev: au1100fb: Spelling s/palette/palette/
2022-02-16 10:54:42 +01:00
au1200fb.c
video: fbdev: au1200fb: Make use of dma_mmap_coherent()
2022-01-29 22:24:25 +01:00
au1200fb.h
…
broadsheetfb.c
fbdev: Use pageref offset for deferred-I/O writeback
2022-05-03 16:04:22 +02:00
bt431.h
…
bt455.h
…
bw2.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
c2p_core.h
fbdev: c2p: Use BUILD_BUG() instead of custom solution
2020-03-09 11:12:19 +01:00
c2p_iplan2.c
…
c2p_planar.c
…
c2p.h
…
carminefb_regs.h
…
carminefb.c
drm pull for 5.6-rc1
2020-01-30 08:04:01 -08:00
carminefb.h
…
cg3.c
video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode
2020-12-08 18:34:08 +01:00
cg6.c
video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode
2020-12-08 18:34:08 +01:00
cg14.c
fbdev: cg14fb: use resource_size
2020-01-15 17:31:50 +01:00
chipsfb.c
fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init()
2022-08-24 21:47:09 +02:00
cirrusfb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
clps711x-fb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
cobalt_lcdfb.c
video: constify fb ops across all drivers
2019-12-05 10:57:53 +02:00
controlfb.c
video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h
2022-04-04 08:55:23 +02:00
controlfb.h
…
cyber2000fb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
cyber2000fb.h
…
da8xx-fb.c
video: fbdev: da8xx-fb: Make use of the helper function dev_err_probe()
2022-01-29 23:22:36 +01:00
dnfb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
edid.h
…
efifb.c
Merge drm/drm-next into drm-misc-next
2022-06-20 18:21:25 +02:00
ep93xx-fb.c
video: ep93xx: Prepare clock before using it
2021-07-26 22:10:29 +02:00
ffb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
fm2fb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
fsl-diu-fb.c
video: fbdev: fsl-diu-fb: remove unneeded variable 'res'
2020-10-17 08:23:14 +02:00
g364fb.c
fbdev/g364fb: Fix build failure
2020-02-19 10:58:22 -08:00
gbefb.c
video: fbdev: gbefb: Only instantiate device when built for IP32
2021-10-06 11:12:28 +02:00
goldfishfb.c
video: fbdev: goldfishfb: Fix defined but not used warning
2020-12-08 18:34:50 +01:00
grvga.c
video: fbdev: Replace HTTP links with HTTPS ones
2020-07-20 11:47:29 +02:00
gxt4500.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
hecubafb.c
fbdev: Rename pagelist to pagereflist for deferred I/O
2022-05-03 16:04:22 +02:00
hgafb.c
video: hgafb: correctly handle card detect failure during probe
2021-05-21 15:04:05 +02:00
hitfb.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
hpfb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
hyperv_fb.c
fbdev fixes and updates for kernel v5.19-rc1
2022-05-30 12:46:49 -07:00
i740_reg.h
…
i740fb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
imsttfb.c
video: imsttfb: check for ioremap() failures
2021-05-13 18:58:39 +02:00
imxfb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
Kconfig
drm: Implement DRM aperture helpers under video/
2022-06-27 11:07:55 +02:00
leo.c
video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode
2020-12-08 18:34:08 +01:00
macfb.c
video: fbdev: Replace HTTP links with HTTPS ones
2020-07-20 11:47:29 +02:00
macmodes.c
…
macmodes.h
…
Makefile
ARM: omap1: move lcd_dma code into omapfb driver
2022-04-21 15:00:45 +02:00
maxinefb.c
video: constify fb ops across all drivers
2019-12-05 10:57:53 +02:00
metronomefb.c
fbdev: Use pageref offset for deferred-I/O writeback
2022-05-03 16:04:22 +02:00
mx3fb.c
dmaengine: imx: Move header to include/dma/
2022-04-19 12:06:18 +01:00
n411.c
…
neofb.c
video: fbdev: neofb: Fix the check of 'var->pixclock'
2022-04-11 08:23:49 +02:00
ocfb.c
video: fbdev: ocfb: add const to of_device_id
2022-01-29 22:24:25 +01:00
offb.c
video: fbdev: offb: Include missing linux/platform_device.h
2022-07-28 16:22:12 +10:00
p9100.c
video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode
2020-12-08 18:34:08 +01:00
platinumfb.c
video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h
2022-04-04 08:55:23 +02:00
platinumfb.h
…
pm2fb.c
fbdev: fb_pm2fb: Avoid potential divide by zero error
2022-08-24 21:47:08 +02:00
pm3fb.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
pmag-aa-fb.c
drm pull for 5.6-rc1
2020-01-30 08:04:01 -08:00
pmag-ba-fb.c
drm pull for 5.6-rc1
2020-01-30 08:04:01 -08:00
pmagb-b-fb.c
drm pull for 5.6-rc1
2020-01-30 08:04:01 -08:00
ps3fb.c
powerpc/ps3: make system bus's remove and shutdown callbacks return void
2020-12-04 01:01:22 +11:00
pvr2fb.c
video: fbdev: pvr2fb: initialize variables
2020-08-05 19:47:22 +02:00
pxa3xx-gcu.c
video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write
2022-06-20 20:12:17 +02:00
pxa3xx-gcu.h
…
pxa3xx-regs.h
ARM: pxa: move regs-lcd.h into driver
2022-04-19 16:29:03 +02:00
pxa168fb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
pxa168fb.h
…
pxafb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
pxafb.h
video: pxafb: Remove cpufreq policy notifier
2019-08-26 10:02:02 +02:00
q40fb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
s1d13xxxfb.c
video: fbdev: s1d13xxxfb: Fix kernel-doc and set but not used warnings
2020-11-29 22:51:07 +01:00
s3c2410fb-regs-lcd.h
fbdev: s3c2410fb: remove mach header dependency
2020-08-20 17:48:12 +02:00
s3c2410fb.c
fbdev: s3c2410fb: remove mach header dependency
2020-08-20 17:48:12 +02:00
s3c2410fb.h
…
s3c-fb.c
drm for 5.18-rc1
2022-03-24 16:19:43 -07:00
s3fb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
sa1100fb.c
video: fbdev: sa1100fb: Remove unused sa1100fb_setup()
2022-07-18 07:54:18 +02:00
sa1100fb.h
ARM/fbdev: sa11x0: Switch to use GPIO descriptors
2020-04-17 15:50:11 +02:00
sbuslib.c
fbdev: sbuslib: remove compat_alloc_user_space usage
2020-09-25 16:34:50 +02:00
sbuslib.h
…
sh7760fb.c
drm pull for 5.6-rc1
2020-01-30 08:04:01 -08:00
sh_mobile_lcdcfb.c
fbdev: Use pageref offset for deferred-I/O writeback
2022-05-03 16:04:22 +02:00
sh_mobile_lcdcfb.h
…
simplefb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
skeletonfb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
sm501fb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
sm712.h
…
sm712fb.c
video: fbdev: sm712fb: Fix crash in smtcfb_write()
2022-03-03 11:13:40 +01:00
smscufx.c
fbdev: Use pageref offset for deferred-I/O writeback
2022-05-03 16:04:22 +02:00
ssd1307fb.c
fbdev: ssd1307fb: Fix repeated words in comments
2022-08-24 21:47:08 +02:00
sstfb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
sticore.h
parisc/stifb: Keep track of hardware path of graphics card
2022-06-04 15:47:03 +02:00
stifb.c
parisc/stifb: Implement fb_is_primary_device()
2022-06-04 15:47:03 +02:00
sunxvr500.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
sunxvr1000.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
sunxvr2500.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
tcx.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
tdfxfb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
tgafb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
tmiofb.c
video: constify fb ops across all drivers
2019-12-05 10:57:53 +02:00
tridentfb.c
fbdev: Move fbdev drivers from strlcpy to strscpy
2022-08-24 22:06:15 +02:00
udlfb.c
fbdev: Use pageref offset for deferred-I/O writeback
2022-05-03 16:04:22 +02:00
uvesafb.c
video: fbdev: uvesafb: Fix set but not used warning
2020-12-08 18:33:48 +01:00
valkyriefb.c
video: fbdev: Make *fb_setup() and *fb_init() static
2022-07-18 07:54:20 +02:00
valkyriefb.h
…
vesafb.c
video: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup
2022-05-28 19:26:56 +02:00
vfb.c
video: constify fb ops across all drivers
2019-12-05 10:57:53 +02:00
vga16fb.c
drm-misc-next for v5.18:
2022-02-01 19:02:41 +10:00
vt8500lcdfb.c
video: vt8500lcdfb: fix fallthrough warning
2020-04-17 15:50:08 +02:00
vt8500lcdfb.h
…
vt8623fb.c
video: fbdev: vt8623fb: Check the size of screen before memset_io()
2022-08-05 18:44:14 +02:00
w100fb.c
video: fbdev: w100fb: Reset global state
2022-01-29 22:24:26 +01:00
w100fb.h
…
wm8505fb_regs.h
…
wm8505fb.c
video: fbdev: wm8505fb: fix sparse warnings about using incorrect types
2020-03-02 16:32:04 +01:00
wmt_ge_rops.c
video: fbdev: wmt_ge_rops: Fix function not declared warnings
2020-12-08 18:34:36 +01:00
wmt_ge_rops.h
…
xen-fbfront.c
fbdev fixes and updates for kernel v5.19-rc1
2022-05-30 12:46:49 -07:00
xilinxfb.c
video: fbdev: Fix fall-through warning for Clang
2021-07-13 13:58:29 -05:00