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1d6213ab99
linux/drivers
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Jonathan Nieder 1d6213ab99 [media] cx88: hold device lock during sub-driver initialization 
cx8802_blackbird_probe makes a device node for the mpeg sub-device
before it has been added to dev->drvlist.  If the device is opened
during that time, the open succeeds but request_acquire cannot be
called, so the reference count remains zero.  Later, when the device
is closed, the reference count becomes negative --- uh oh.

Close the race by holding core->lock during probe and not releasing
until the device is in drvlist and initialization finished.
Previously the BKL prevented this race.

Reported-by: Andreas Huber <hobrom@gmx.at>
Tested-by: Andi Huber <hobrom@gmx.at>
Tested-by: Marlon de Boer <marlon@hyves.nl>
Cc: stable@kernel.org
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-05-20 09:29:37 -03:00
..
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acpi ACPI / PM: Avoid infinite recurrence while registering power resources 2011-04-26 11:33:18 +02:00
amba PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS 2011-04-11 22:54:42 +02:00
ata Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev 2011-05-14 12:19:18 -07:00
atm drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
auxdisplay Fix common misspellings 2011-03-31 11:26:23 -03:00
base PM / Wakeup: Fix initialization of wakeup-related device sysfs files 2011-04-26 11:33:09 +02:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2011-05-18 06:49:02 -07:00
bluetooth Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
cdrom cdrom: always check_disk_change() on open 2011-04-29 10:17:25 +02:00
char drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
clk CLKDEV: Fix clkdev return value for NULL clk case 2011-04-30 10:14:08 +01:00
clocksource
connector connector: fix skb double free in cn_rx_skb() 2011-04-12 14:38:57 -07:00
cpufreq Fix common misspellings 2011-03-31 11:26:23 -03:00
cpuidle
crypto Fix common misspellings 2011-03-31 11:26:23 -03:00
dca drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() combination 2011-03-22 17:44:12 -07:00
dio
dma Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
edac drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
eisa
firewire Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-05-04 14:21:39 -07:00
firmware sigma-firmware: loader for Analog Devices' SigmaStudio 2011-03-22 17:44:15 -07:00
gpio Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
gpu drm: Take lock around probes for drm_fb_helper_hotplug_event 2011-05-16 12:01:43 +10:00
hid Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
hwmon hwmon: (twl4030-madc-hwmon) Return proper error if hwmon_device_register fails 2011-05-01 09:06:35 -07:00
hwspinlock
i2c drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
ide ide: unexport DISK_EVENT_MEDIA_CHANGE for ide-gd and ide-cd 2011-04-21 19:43:59 +02:00
idle
ieee802154
infiniband Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2011-05-12 10:41:31 -07:00
isdn Fix common misspellings 2011-03-31 11:26:23 -03:00
leds drivers/leds/leds-lm3530.c: add MODULE_DEVICE_TABLE 2011-05-18 02:55:22 -07:00
lguest Fix common misspellings 2011-03-31 11:26:23 -03:00
macintosh Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
mca
md raid5: fix build error, sector_t usage 2011-04-21 10:00:00 -07:00
media [media] cx88: hold device lock during sub-driver initialization 2011-05-20 09:29:37 -03:00
memstick Fix common misspellings 2011-03-31 11:26:23 -03:00
message block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers 2011-04-21 21:33:05 +02:00
mfd mfd: Fix for the TWL4030 PM sleep/wakeup sequence 2011-05-11 11:09:58 +02:00
misc drivers/misc/sgi-gru/grufile.c: fix the wrong members of gru_chip 2011-04-14 16:06:55 -07:00
mmc drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
mtd drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
net drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
nfc
nubus
of Fix common misspellings 2011-03-31 11:26:23 -03:00
oprofile
parisc Fix common misspellings 2011-03-31 11:26:23 -03:00
parport parport_pc.c: correctly release the requested region for the IT887x 2011-04-19 16:36:24 -07:00
pci PCI: Clear bridge resource flags if requested size is 0 2011-05-16 18:33:35 -07:00
pcmcia Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
platform eeepc-laptop: Use ACPI handle to identify rfkill port 2011-05-09 10:48:47 -04:00
pnp Fix common misspellings 2011-03-31 11:26:23 -03:00
power drivers: Final irq namespace conversion 2011-03-29 14:48:19 +02:00
pps Fix common misspellings 2011-03-31 11:26:23 -03:00
ps3 Fix common misspellings 2011-03-31 11:26:23 -03:00
rapidio rapidio: fix default routing initialization 2011-05-18 02:55:22 -07:00
regulator Fix common misspellings 2011-03-31 11:26:23 -03:00
rtc Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-05-17 08:02:04 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2011-05-18 06:49:02 -07:00
sbus Fix common misspellings 2011-03-31 11:26:23 -03:00
scsi Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6 2011-05-18 13:25:57 -07:00
sfi Fix common misspellings 2011-03-31 11:26:23 -03:00
sh sh: Fix irq cleanup fallout 2011-03-30 00:15:49 +02:00
sn
spi Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
ssb Fix common misspellings 2011-03-31 11:26:23 -03:00
staging [media] tm6000: add detection based on eeprom name 2011-05-20 09:28:55 -03:00
target Fix common misspellings 2011-03-31 11:26:23 -03:00
tc
telephony Fix common misspellings 2011-03-31 11:26:23 -03:00
thermal
tty drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
uio Fix common misspellings 2011-03-31 11:26:23 -03:00
usb drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
uwb Fix common misspellings 2011-03-31 11:26:23 -03:00
vhost
video Merge branch 'fbmem' 2011-05-14 11:24:32 -07:00
virtio virtio_pci: Prevent double-free of pci regions after device hot-unplug 2011-04-21 22:57:00 +09:30
vlynq vlynq: Convert irq functions 2011-03-28 19:33:04 +02:00
w1 Fix common misspellings 2011-03-31 11:26:23 -03:00
watchdog drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
xen PM: Add missing syscore_suspend() and syscore_resume() calls 2011-04-20 00:36:11 +02:00
zorro
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