Zheyu Ma e00582a361 video: fbdev: i740fb: Error out if 'pixclock' equals zero ... commit 15cf0b8227 upstream. The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of 'pixclock', it may cause divide error. Fix this by checking whether 'pixclock' is zero in the function i740fb_check_var(). The following log reveals it: divide error: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:i740fb_decode_var drivers/video/fbdev/i740fb.c:444 [inline] RIP: 0010:i740fb_set_par+0x272f/0x3bb0 drivers/video/fbdev/i740fb.c:739 Call Trace: fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1036 do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1112 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1191 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] Signed-off-by: Zheyu Ma <zheyuma97@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Stefan Ghinea <stefan.ghinea@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-09-23 14:16:58 +02:00
..
backlight	backlight: qcom-wled: Respect enabled-strings in set_brightness	2022-01-27 10:53:59 +01:00
console	parisc/stifb: Fix fb_is_primary_device() only available with CONFIG_FB_STI	2022-06-29 08:59:53 +02:00
fbdev	video: fbdev: i740fb: Error out if 'pixclock' equals zero	2022-09-23 14:16:58 +02:00
logo
display_timing.c
hdmi.c
Kconfig
Makefile
of_display_timing.c
of_videomode.c
vgastate.c
videomode.c