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linux/drivers/video
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Oleg Nesterov 232fb69a53 fbcon_set_all_vcs: fix kernel crash when switching the rotated consoles 
echo 3 >> /sys/class/graphics/fbcon/rotate_all, then switch to another
console. Result:

	BUG: unable to handle kernel paging request at ffffc20005d00000
	IP: [bitfill_aligned+149/265] bitfill_aligned+0x95/0x109
	PGD 7e228067 PUD 7e229067 PMD 7bc1f067 PTE 0
	Oops: 0002 [1] SMP
	CPU 1
	Modules linked in: [...a lot...]
	Pid: 10, comm: events/1 Not tainted 2.6.26.5-45.fc9.x86_64 #1
	RIP: 0010:[bitfill_aligned+149/265]  [bitfill_aligned+149/265] bitfill_aligned+0x95/0x109
	RSP: 0018:ffff81007d811bc8  EFLAGS: 00010216
	RAX: ffffc20005d00000 RBX: 0000000000000000 RCX: 0000000000000400
	RDX: 0000000000000000 RSI: ffffc20005d00000 RDI: ffffffffffffffff
	RBP: ffff81007d811be0 R08: 0000000000000400 R09: 0000000000000040
	R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000010000
	R13: ffffffff811632f0 R14: 0000000000000006 R15: ffff81007cb85400
	FS:  0000000000000000(0000) GS:ffff81007e004780(0000) knlGS:0000000000000000
	CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
	CR2: ffffc20005d00000 CR3: 0000000000201000 CR4: 00000000000006e0
	DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
	DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
	Process events/1 (pid: 10, threadinfo ffff81007d810000, task ffff81007d808000)
	Stack:  ffff81007c9d75a0 0000000000000000 0000000000000000 ffff81007d811c80
	 ffffffff81163a61 ffff810000000000 ffffffff8115f9c8 0000001000000000
	 0000000100aaaaaa 000000007cd0d4a0 fffffd8a00000800 0001000000000000
	Call Trace:
	 [cfb_fillrect+523/798] cfb_fillrect+0x20b/0x31e
	 [soft_cursor+416/436] ? soft_cursor+0x1a0/0x1b4
	 [ccw_clear_margins+205/263] ccw_clear_margins+0xcd/0x107
	 [fbcon_clear_margins+59/61] fbcon_clear_margins+0x3b/0x3d
	 [fbcon_switch+1291/1466] fbcon_switch+0x50b/0x5ba
	 [redraw_screen+261/481] redraw_screen+0x105/0x1e1
	 [ccw_cursor+0/1869] ? ccw_cursor+0x0/0x74d
	 [complete_change_console+48/190] complete_change_console+0x30/0xbe
	 [change_console+115/120] change_console+0x73/0x78
	 [console_callback+0/292] ? console_callback+0x0/0x124
	 [console_callback+97/292] console_callback+0x61/0x124
	 [schedule_delayed_work+25/30] ? schedule_delayed_work+0x19/0x1e
	 [run_workqueue+139/282] run_workqueue+0x8b/0x11a
	 [worker_thread+221/238] worker_thread+0xdd/0xee
	 [autoremove_wake_function+0/56] ? autoremove_wake_function+0x0/0x38
	 [worker_thread+0/238] ? worker_thread+0x0/0xee
	 [kthread+73/118] kthread+0x49/0x76
	 [child_rip+10/18] child_rip+0xa/0x12
	 [kthread+0/118] ? kthread+0x0/0x76
	 [child_rip+0/18] ? child_rip+0x0/0x12

Because fbcon_set_all_vcs()->FBCON_SWAP() uses display->rotate == 0 instead
of fbcon_ops->rotate, and vc_resize() has no effect because it is called with
new_cols/rows == ->vc_cols/rows.

Tested on 2.6.26.5-45.fc9.x86_64, but
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git seems to
have the same problem.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: <stable@kernel.org>	[2.6.27.x, 2.6.26.x, maybe 2.6.25.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2008-10-16 11:21:45 -07:00
..
aty radeonfb: accelerate imageblit and other improvements 2008-10-16 11:21:44 -07:00
backlight Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-10-13 17:13:56 +01:00
console fbcon_set_all_vcs: fix kernel crash when switching the rotated consoles 2008-10-16 11:21:45 -07:00
display fbdev: fix race in device_create 2008-05-20 13:31:53 -07:00
geode lxfb: fix console blanking 2008-07-24 10:47:40 -07:00
i810 i810fb: fix console switch regression 2008-03-19 18:53:36 -07:00
intelfb intelfb: support 945GME (as used in ASUS Eee 901) 2008-10-16 11:21:42 -07:00
kyro
…
logo video/logo: add support for Blackfin/Linux logo for framebuffer console 2008-05-14 19:11:14 -07:00
matrox matroxfb: support G200eV chip 2008-10-16 11:21:45 -07:00
mbx mbxfb: fix incorrect argument type 2008-03-10 18:01:20 -07:00
nvidia video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
omap omap drivers: switch to standard GPIO calls 2008-10-16 11:21:40 -07:00
pnx4008 [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
riva video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
savage savagefb: speed up the I2C bus 2008-04-28 08:58:38 -07:00
sis video/sis/: remove compat code 2008-07-24 10:47:37 -07:00
vermilion removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
via viafb: via_utility.c, via_utility.h, vt1636.c, vt1636.h 2008-10-16 11:21:42 -07:00
68328fb.c
…
Kconfig fbdev: add new TMIO framebuffer driver 2008-10-16 11:21:45 -07:00
Makefile fbdev: add new TMIO framebuffer driver 2008-10-16 11:21:45 -07:00
acornfb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
acornfb.h
…
amba-clcd.c
…
amifb.c drivers/video/amifb.c cleanups 2008-07-24 10:47:40 -07:00
arcfb.c
…
arkfb.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
asiliantfb.c
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atafb.c atafb: test virtual screen range before subtraction on unsigned 2008-07-24 10:47:37 -07:00
atafb.h
…
atafb_iplan2p2.c
…
atafb_iplan2p4.c
…
atafb_iplan2p8.c
…
atafb_mfb.c
…
atafb_utils.h
…
atmel_lcdfb.c atmel_lcdfb: disallow setting larger resolution than the framebuffer memory can handle 2008-10-16 11:21:44 -07:00
au1100fb.c
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au1100fb.h
…
au1200fb.c
…
au1200fb.h
…
bf54x-lq043fb.c Blackfin arch: move include/asm-blackfin header files to arch/blackfin 2008-08-27 10:51:02 +08:00
bfin-t350mcqb-fb.c lcd: add lcd_device to check_fb() entry in lcd_ops 2008-07-24 10:47:40 -07:00
bt431.h
…
bt455.h
…
bw2.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
c2p.c export c2p 2008-07-20 17:24:39 -07:00
c2p.h
…
carminefb.c framebuffer: fix carminefb section mismatch 2008-10-16 11:21:45 -07:00
carminefb.h fbdev: add the carmine FB driver 2008-07-24 10:47:34 -07:00
carminefb_regs.h fbdev: add the carmine FB driver 2008-07-24 10:47:34 -07:00
cfbcopyarea.c fb: add support for foreign endianness 2008-04-28 08:58:35 -07:00
cfbfillrect.c fb: add support for foreign endianness 2008-04-28 08:58:35 -07:00
cfbimgblt.c video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
cg3.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
cg6.c cg6: disable cursor when leaving graphics mode 2008-10-10 12:12:41 -07:00
cg14.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
chipsfb.c PM: Introduce PM_EVENT_HIBERNATE callback state 2008-02-23 10:40:04 -08:00
cirrusfb.c cirrusfb: do not change MCLK for Alpine chips 2008-10-16 11:21:44 -07:00
clps711xfb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
cobalt_lcdfb.c fbdev: add new Cobalt LCD framebuffer driver 2008-07-24 10:47:40 -07:00
controlfb.c
…
controlfb.h
…
cyber2000fb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
cyber2000fb.h
…
cyblafb.c
…
dnfb.c m68k: dnfb doesnt check for Apollo 2008-05-18 13:28:49 -07:00
edid.h
…
efifb.c efifb/imacfb consolidation + hardware support 2008-10-16 11:21:44 -07:00
epson1355fb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
fb_ddc.c i2c: Let framebuffer drivers set their I2C bus class to DDC 2008-07-14 22:38:28 +02:00
fb_defio.c fbdefio: add set_page_dirty handler to deferred IO FB 2008-08-20 15:40:32 -07:00
fb_draw.h fb: add support for foreign endianness 2008-04-28 08:58:35 -07:00
fb_notify.c
…
fb_sys_fops.c
…
fbcmap.c
…
fbcvt.c
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fbmem.c lcd: allow lcd device to handle mode change events 2008-09-23 22:01:33 +01:00
fbmon.c fbmon: fix EDID parser to detect interlace modes 2008-10-16 11:21:44 -07:00
fbsysfs.c
…
ffb.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
fm2fb.c
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fsl-diu-fb.c freescale DIU: bug fix: add sanity check for AOI position 2008-08-15 08:35:43 -07:00
fsl-diu-fb.h fbdev: powerpc: driver for Freescale 8610 and 5121 DIU 2008-04-28 08:58:40 -07:00
g364fb.c
…
gbefb.c gbefb: cmap FIFO timeout 2008-07-30 09:41:47 -07:00
gxt4500.c fbdev: use DIV_ROUND_UP or roundup 2008-04-28 08:58:35 -07:00
hecubafb.c fbdev: platforming hecubafb and n411 2008-04-28 08:58:41 -07:00
hgafb.c hgafb: convert to new platform driver API 2008-07-24 10:47:39 -07:00
hitfb.c video: Fix up hp6xx driver build regressions. 2008-07-30 02:16:12 +09:00
hpfb.c m68k: Return -ENODEV if no device is found 2008-05-18 13:28:50 -07:00
igafb.c drivers/video: add missing pci_dev_get 2008-02-06 10:41:16 -08:00
imacfb.c efifb/imacfb consolidation + hardware support 2008-10-16 11:21:44 -07:00
imsttfb.c video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
imxfb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
imxfb.h
…
leo.c leo: disable cursor when leaving graphics mode 2008-10-10 12:13:22 -07:00
macfb.c make macfb_setup() static 2008-07-26 12:00:12 -07:00
macmodes.c
…
macmodes.h
…
maxinefb.c
…
metronomefb.c metronomefb: Fix warning when building 64bit 2008-10-15 10:19:51 -07:00
modedb.c fbdev: export symbol fb_mode_option 2008-06-06 11:29:12 -07:00
n411.c fbdev: platforming hecubafb and n411 2008-04-28 08:58:41 -07:00
neofb.c neofb: remove open_lock mutex 2008-10-16 11:21:42 -07:00
offb.c fbdev: Teaches offb about palette on radeon r5xx/r6xx 2008-07-22 10:39:36 +10:00
output.c
…
p9100.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
platinumfb.c platinumfb: Use linux/of_{device,platform}.h instead of asm 2008-06-09 13:46:38 +10:00
platinumfb.h
…
pm2fb.c pm2fb: free cmap memory on module remove 2008-08-20 15:40:31 -07:00
pm3fb.c video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
pmag-aa-fb.c fbcon: fix color generation for monochrome framebuffer 2008-02-06 10:41:18 -08:00
pmag-ba-fb.c
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pmagb-b-fb.c
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ps3fb.c powerpc/ps3: Add a sub-match id to ps3_system_bus 2008-07-22 10:39:33 +10:00
pvr2fb.c sh: More header path fixups for mach dir refactoring. 2008-07-29 22:10:01 +09:00
pxafb.c [ARM] pxafb: fix the warning of incorrect lccr when lcd_conn is specified 2008-08-16 16:39:16 +01:00
pxafb.h pxafb: convert ctrlr_sem in a mutex 2008-07-24 10:47:37 -07:00
q40fb.c
…
s1d13xxxfb.c fbdev: allow more chip revisions in Epson s1d13... video driver 2008-10-16 11:21:45 -07:00
s3c2410fb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
s3c2410fb.h S3C2410: clean out changelog header and tidy 2008-05-24 09:56:13 -07:00
s3fb.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
sa1100fb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
sa1100fb.h sa1100fb: convert ctrlr_sem in a mutex 2008-07-24 10:47:37 -07:00
sbuslib.c sparc video: remove open boot prom code 2008-05-08 21:37:30 -07:00
sbuslib.h sparc video: remove open boot prom code 2008-05-08 21:37:30 -07:00
sgivwfb.c x86, VisWS: turn into generic arch, move definitions 2008-07-10 18:55:40 +02:00
sh7760fb.c sh7760fb: write colormap value to hardware 2008-07-28 16:30:21 -07:00
sh_mobile_lcdcfb.c video: export sh_mobile_lcdc panel size 2008-08-11 20:17:55 +09:00
skeletonfb.c skeletonfb: update to correct platform driver usage 2008-07-24 10:47:39 -07:00
sm501fb.c sm501: fixup allocation code to be 64bit resource compliant 2008-07-24 10:47:40 -07:00
sstfb.c video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
sticore.h video/console/stico{n,re}.c: make code static 2008-07-26 12:00:12 -07:00
stifb.c video/stifb.c: make 2 functions static 2008-07-26 12:00:12 -07:00
sunxvr500.c sparc video: remove open boot prom code 2008-05-08 21:37:30 -07:00
sunxvr2500.c sparc video: remove open boot prom code 2008-05-08 21:37:30 -07:00
svgalib.c
…
syscopyarea.c fb: add support for foreign endianness 2008-04-28 08:58:35 -07:00
sysfillrect.c fb: add support for foreign endianness 2008-04-28 08:58:35 -07:00
sysimgblt.c video: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
tcx.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
tdfxfb.c tdfxfb: do not make changes to default tdfx_fix 2008-10-16 11:21:42 -07:00
tgafb.c
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tmiofb.c fbdev: add new TMIO framebuffer driver 2008-10-16 11:21:45 -07:00
tridentfb.c tridentfb: remove warning message that cyblafb driver should be used 2008-07-24 10:47:36 -07:00
uvesafb.c uvesafb: don't treat mode info retrieval failures as errors 2008-10-16 11:21:44 -07:00
valkyriefb.c
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valkyriefb.h
…
vesafb.c
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vfb.c vfb: only enable if explicitly requested when compiled in 2008-07-24 10:47:39 -07:00
vga16fb.c vga16fb: remove open_lock mutex 2008-10-16 11:21:42 -07:00
vgastate.c
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vt8623fb.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
w100fb.c w100fb: add 80 MHz modeline 2008-07-04 10:40:08 -07:00
w100fb.h
…
xen-fbfront.c xen: clean up domain mode predicates 2008-08-20 12:40:07 +02:00
xilinxfb.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00