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mirror-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
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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
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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
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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
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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
Kconfig drm: Implement DRM aperture helpers under video/ 2022-06-27 11:07:55 +02:00
Makefile ARM: omap1: move lcd_dma code into omapfb driver 2022-04-21 15:00:45 +02:00
acornfb.c
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acornfb.h
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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
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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.c video: fbdev: atari: Remove backward bug-compatibility 2022-07-18 07:56:18 +02:00
atafb.h
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atafb_iplan2p2.c
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atafb_iplan2p4.c
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atafb_iplan2p8.c
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atafb_mfb.c
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atafb_utils.h
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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
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broadsheetfb.c fbdev: Use pageref offset for deferred-I/O writeback 2022-05-03 16:04:22 +02:00
bt431.h
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bt455.h
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bw2.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
c2p.h
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c2p_core.h
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c2p_iplan2.c
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c2p_planar.c
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carminefb.c
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carminefb.h
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carminefb_regs.h
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cg3.c
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cg6.c
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cg14.c
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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
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controlfb.c video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h 2022-04-04 08:55:23 +02:00
controlfb.h
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cyber2000fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
cyber2000fb.h
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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
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efifb.c Merge drm/drm-next into drm-misc-next 2022-06-20 18:21:25 +02:00
ep93xx-fb.c
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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
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g364fb.c
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gbefb.c
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goldfishfb.c
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grvga.c
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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
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hitfb.c
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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
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i740fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
imsttfb.c
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imxfb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
leo.c
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macfb.c
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macmodes.c
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macmodes.h
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maxinefb.c
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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
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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
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platinumfb.c video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h 2022-04-04 08:55:23 +02:00
platinumfb.h
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pm2fb.c fbdev: fb_pm2fb: Avoid potential divide by zero error 2022-08-24 21:47:08 +02:00
pm3fb.c
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pmag-aa-fb.c
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pmag-ba-fb.c
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pmagb-b-fb.c
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ps3fb.c
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pvr2fb.c
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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
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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
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pxafb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
pxafb.h
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q40fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
s1d13xxxfb.c
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s3c-fb.c drm for 5.18-rc1 2022-03-24 16:19:43 -07:00
s3c2410fb-regs-lcd.h
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s3c2410fb.c
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s3c2410fb.h
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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
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sbuslib.c
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sbuslib.h
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sh7760fb.c
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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
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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
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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
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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
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valkyriefb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
valkyriefb.h
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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
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vga16fb.c drm-misc-next for v5.18: 2022-02-01 19:02:41 +10:00
vt8500lcdfb.c
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vt8500lcdfb.h
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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
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wm8505fb.c
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wm8505fb_regs.h
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wmt_ge_rops.c
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wmt_ge_rops.h
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xen-fbfront.c fbdev fixes and updates for kernel v5.19-rc1 2022-05-30 12:46:49 -07:00
xilinxfb.c
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