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kernel_google_wahoo/drivers/video/fbdev
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Anirudh Rayabharam e7a48689d1 video: hgafb: correctly handle card detect failure during probe 
commit 02625c965239b71869326dd0461615f27307ecb3 upstream.

The return value of hga_card_detect() is not properly handled causing
the probe to succeed even though hga_card_detect() failed. Since probe
succeeds, hgafb_open() can be called which will end up operating on an
unmapped hga_vram. This results in an out-of-bounds access as reported
by kernel test robot [1].

To fix this, correctly detect failure of hga_card_detect() by checking
for a non-zero error code.

[1]: https://lore.kernel.org/lkml/20210516150019.GB25903@xsang-OptiPlex-9020/

Fixes: dc13cac4862c ("video: hgafb: fix potential NULL pointer dereference")
Cc: stable <stable@vger.kernel.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Reviewed-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com>
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210516192714.25823-1-mail@anirudhrb.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 11:27:34 +02:00
..
aty
mach64: fix image corruption due to reading accelerator registers
2018-11-21 09:27:42 +01:00
core
fbdev: zero-fill colormap in fbcmap.c
2021-05-22 10:38:17 +02:00
exynos
fbdev: s6e8ax0: avoid unused function warnings
2018-02-25 11:03:46 +01:00
geode
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2020-06-11 09:21:40 +02:00
i810
video: fbdev: i810: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:51 +03:00
intelfb
video: Use bool instead int pointer for get_opt_bool() argument
2018-02-25 11:03:45 +01:00
kyro
drivers/video/fbdev/kyrofb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
2015-08-25 09:59:44 +02:00
matrox
matroxfb: fix size of memcpy
2018-12-17 21:55:17 +01:00
mb862xx
video: fbdev: mb862xx: Fix module autoload for OF platform driver
2015-09-24 14:35:36 +03:00
mbx
video/mbx: indent some if statements
2014-07-01 13:32:30 +03:00
mmp
video: fbdev/mmp: add MODULE_LICENSE
2018-02-25 11:03:37 +01:00
nvidia
video: fbdev: nvidia: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:50 +03:00
omap
fbdev: omapfb: off by one in omapfb_register_client()
2018-09-26 08:35:05 +02:00
omap2
drm/omap: fix possible object reference leak
2020-10-01 11:11:53 +02:00
riva
video: fbdev: rivafb: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:52 +03:00
savage
video: fbdev: savagefb: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:50 +03:00
sis
video: fbdev: sis: fix null ptr dereference
2020-10-29 09:03:04 +01:00
vermilion
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
via
fbdev/via: fix defined but not used warning
2018-09-26 08:35:05 +02:00
68328fb.c
video: 68328fb: remove check for CONFIG_FB_68328_INVERT
2014-06-24 10:55:13 +03:00
acornfb.c
…
acornfb.h
…
amba-clcd-versatile.c
video: move Versatile CLCD helpers
2014-06-27 10:15:22 +02:00
amba-clcd.c
video: ARM CLCD: fix dma allocation size
2018-03-22 09:23:24 +01:00
amifb.c
Merge tag 'fbdev-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
2015-06-23 16:23:30 -07:00
arcfb.c
…
arkfb.c
drivers/video/fbdev/arkfb.c: Use arch_phys_wc_add() and pci_iomap_wc()
2015-08-25 09:59:45 +02:00
asiliantfb.c
…
atafb_iplan2p2.c
…
atafb_iplan2p4.c
…
atafb_iplan2p8.c
…
atafb_mfb.c
…
atafb_utils.h
…
atafb.c
video/fbdev, asm/io.h: Remove ioremap_writethrough()
2015-06-07 15:28:57 +02:00
atafb.h
…
atmel_lcdfb.c
video: fbdev: atmel_lcdfb: fix display-timings lookup
2018-02-22 15:45:00 +01:00
au1100fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
au1100fb.h
MIPS: Alchemy: au1100fb: use clk framework
2014-07-30 14:10:39 +02:00
au1200fb.c
video: fbdev: au1200fb: Return an error code if a memory allocation fails
2017-12-20 10:04:57 +01:00
au1200fb.h
…
auo_k190x.c
fbdev: auo_k190x: avoid unused function warnings
2018-02-25 11:03:46 +01:00
auo_k190x.h
…
auo_k1900fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
auo_k1901fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
bf54x-lq043fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
bf537-lq035.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
bfin_adv7393fb.c
fb: adv7393: add missing semicolon
2014-07-01 13:18:38 +03:00
bfin_adv7393fb.h
…
bfin-lq035q1-fb.c
…
bfin-t350mcqb-fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
broadsheetfb.c
fbdev: broadsheetfb: fix memory leak
2015-09-30 10:33:57 +03:00
bt431.h
…
bt455.h
…
bw2.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
c2p_core.h
…
c2p_iplan2.c
…
c2p_planar.c
…
c2p.h
…
carminefb_regs.h
…
carminefb.c
…
carminefb.h
…
cg3.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
cg6.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
cg14.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
chipsfb.c
fbdev: chipsfb: remove set but not used variable 'size'
2020-01-29 10:21:39 +01:00
cirrusfb.c
…
clps711x-fb.c
video: clps711x-fb: release disp device node in probe()
2019-02-20 10:13:11 +01:00
clps711xfb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
cobalt_lcdfb.c
video: fbdev: cobalt_lcdfb: Handle return NULL error from devm_ioremap
2017-08-06 19:19:46 -07:00
controlfb.c
powerpc: Move Power Macintosh drivers to generic byteswappers
2015-03-23 14:29:40 +11:00
controlfb.h
fbdev: controlfb: Add missing modes to fix out of bounds access
2017-12-20 10:04:57 +01:00
cyber2000fb.c
video: fbdev: cyber2000fb.c: use container_of to resolve cfb_info from fb_info
2014-09-30 13:06:01 +03:00
cyber2000fb.h
…
da8xx-fb.c
fbdev: da8xx-fb: fix videomodes of lcd panels
2016-05-04 14:48:51 -07:00
dnfb.c
…
edid.h
…
efifb.c
fbdev/efifb: Fix 16 color palette entry calculation
2016-10-28 03:01:29 -04:00
ep93xx-fb.c
ARM/fb: ep93xx: switch framebuffer to use modedb only
2015-08-13 12:25:44 +02:00
fb-puv3.c
drivers/video/fbdev/fb-puv3.c: Add header files for function unifb_mmap
2014-05-23 13:51:10 +03:00
ffb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
fm2fb.c
…
fsl-diu-fb.c
video: fbdev: fsl: Fix kernel crash when diu_ops is not implemented
2015-12-09 12:57:06 +02:00
g364fb.c
…
gbefb.c
video: fbdev: gbefb: use arch_phys_wc_add() and devm_ioremap_wc()
2015-06-03 12:41:46 +03:00
goldfishfb.c
video: fbdev: Set pixclock = 0 in goldfishfb
2019-04-03 06:23:24 +02:00
grvga.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
gxt4500.c
gxt4500: enable panning
2015-10-08 12:19:39 +03:00
hecubafb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
hgafb.c
video: hgafb: correctly handle card detect failure during probe
2021-05-26 11:27:34 +02:00
hitfb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
hpfb.c
video/fbdev, asm/io.h: Remove ioremap_writethrough()
2015-06-07 15:28:57 +02:00
hyperv_fb.c
video: hyperv_fb: Fix the mmap() regression for v5.4.y and older
2021-01-12 19:47:55 +01:00
i740_reg.h
…
i740fb.c
drivers/video/fbdev/i740fb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
2015-08-25 09:59:44 +02:00
igafb.c
…
imsttfb.c
Revert "video: imsttfb: fix potential NULL pointer dereferences"
2021-05-26 11:27:32 +02:00
imxfb.c
video: fbdev: imxfb: Constify platform_device_id
2015-06-12 12:40:27 +03:00
jz4740_fb.c
…
Kconfig
fbdev: aty: SPARC64 requires FB_ATY_CT
2021-03-03 16:44:16 +01:00
leo.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
macfb.c
…
macmodes.c
…
macmodes.h
…
Makefile
fbdev: Remove unused SH-Mobile HDMI driver
2019-11-25 15:54:24 +01:00
maxinefb.c
…
metronomefb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
mx3fb.c
Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2014-12-14 16:10:09 -08:00
mxsfb.c
video: fbdev: mxsfb: Constify platform_device_id
2015-06-12 12:40:27 +03:00
n411.c
…
neofb.c
video: fbdev: neofb: fix memory leak in neo_scan_monitor()
2020-08-21 10:52:58 +02:00
nuc900fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
nuc900fb.h
…
ocfb.c
cleanup IORESOURCE_CACHEABLE vs ioremap()
2015-08-10 23:07:06 -04:00
offb.c
Revert "offb: Add palette hack for little endian"
2014-06-16 19:45:45 +10:00
p9100.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
platinumfb.c
powerpc: Move Power Macintosh drivers to generic byteswappers
2015-03-23 14:29:40 +11:00
platinumfb.h
…
pm2fb.c
video: fbdev: pm2fb: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:51 +03:00
pm3fb.c
video: fbdev: pm3fb: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:52 +03:00
pmag-aa-fb.c
…
pmag-ba-fb.c
video: fbdev: pmag-ba-fb: Remove bad `__init' annotation
2017-11-15 17:13:09 +01:00
pmagb-b-fb.c
…
ps3fb.c
…
pvr2fb.c
video: fbdev: pvr2fb: initialize variables
2020-11-10 10:22:13 +01:00
pxa3xx-gcu.c
video: fbdev: pxa3xx_gcu: fix error return code in pxa3xx_gcu_probe()
2018-11-10 07:41:39 -08:00
pxa3xx-gcu.h
…
pxa168fb.c
pxa168fb: prepare the clock
2018-11-10 07:41:33 -08:00
pxa168fb.h
…
pxafb.c
cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
2015-09-01 15:50:38 +02:00
pxafb.h
…
q40fb.c
…
s1d13xxxfb.c
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
2015-08-10 23:07:05 -04:00
s3c2410fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
s3c2410fb.h
…
s3c-fb.c
video: fbdev: s3c-fb: Constify platform_device_id
2015-08-21 08:56:19 +03:00
s3fb.c
drivers/video/fbdev/s3fb: Use arch_phys_wc_add() and pci_iomap_wc()
2015-08-25 09:59:45 +02:00
sa1100fb.c
cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
2015-09-01 15:50:38 +02:00
sa1100fb.h
ARM: 8244/1: fbdev: sa1100fb: make use of device clock
2014-12-05 16:30:25 +00:00
sbuslib.c
fbdev: sbuslib: integer overflow in sbusfb_ioctl_helper()
2019-11-25 15:54:47 +01:00
sbuslib.h
…
sh7760fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
sh_mipi_dsi.c
…
sh_mobile_lcdcfb.c
fbdev: sh_mobile_lcdc: Fix destruction of uninitialized mutex
2015-04-07 16:24:15 +03:00
sh_mobile_lcdcfb.h
…
sh_mobile_meram.c
Merge tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2014-12-18 20:28:33 -08:00
simplefb.c
simplefb: Include clk.h
2015-07-20 10:52:46 -07:00
skeletonfb.c
…
sm501fb.c
sm501fb: don't return zero on failure path in sm501fb_start()
2018-03-24 10:58:46 +01:00
sm712.h
fbdev: sm712fb: use 1024x768 by default on non-MIPS, fix garbled display
2019-06-11 12:23:48 +02:00
sm712fb.c
video: fbdev: sm712fb: fix an issue about iounmap for a wrong address
2020-08-21 10:53:00 +02:00
smscufx.c
video: smscufx: Deletion of unnecessary checks before the function call "vfree"
2014-12-04 16:16:01 +02:00
ssd1307fb.c
video: ssd1307fb: Start page range at page_offset
2019-10-07 21:00:59 +02:00
sstfb.c
…
sticore.h
…
stifb.c
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
2015-08-10 23:07:05 -04:00
sunxvr500.c
…
sunxvr1000.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
sunxvr2500.c
…
tcx.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
tdfxfb.c
video: fbdev: tdfxfb: use arch_phys_wc_add() and ioremap_wc()
2015-06-03 12:41:52 +03:00
tgafb.c
…
tmiofb.c
…
tridentfb.c
Merge tag 'fbdev-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
2015-11-10 10:00:09 -08:00
udlfb.c
video: fbdev: udlfb: Fix buffer on stack
2018-03-24 10:58:46 +01:00
uvesafb.c
video: uvesafb: Fix integer overflow in allocation
2018-07-03 11:21:34 +02:00
valkyriefb.c
video: fbdev: valkyriefb.c: use container_of to resolve fb_info_valkyrie from fb_info
2014-09-30 13:06:01 +03:00
valkyriefb.h
…
vesafb.c
video: fbdev: vesafb: use arch_phys_wc_add()
2015-06-16 09:42:11 +03:00
vfb.c
vfb: fix video mode and line_length being set when loaded
2018-04-13 19:50:13 +02:00
vga16fb.c
video: fbdev: vga16fb: fix setting of pixclock because a pass-by-value error
2020-10-29 09:03:04 +01:00
vt8500lcdfb.c
video: vt8500lcdfb: remove unneeded continue
2015-01-13 13:35:04 +02:00
vt8500lcdfb.h
…
vt8623fb.c
drivers/video/fbdev/vt8623fb: Use arch_phys_wc_add() and pci_iomap_wc()
2015-08-25 09:59:45 +02:00
w100fb.c
video: fbdev: w100fb: Fix a potential double free.
2020-06-20 10:23:18 +02:00
w100fb.h
…
wm8505fb_regs.h
…
wm8505fb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
wmt_ge_rops.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00
wmt_ge_rops.h
…
xen-fbfront.c
xen, fbfront: fix connecting to backend
2017-04-21 09:30:06 +02:00
xilinxfb.c
video: fbdev: drop owner assignment from platform_drivers
2014-10-20 16:21:51 +02:00