Laurent Pinchart f41ced8f10 Check fops_get() return value ... Several subsystem open handlers dereference the fops_get() return value without checking it for nullness. This opens a race condition between the open handler and module unloading. A module can be marked as being unloaded (MODULE_STATE_GOING) before its exit function is called and gets the chance to unregister the driver. During that window open handlers can still be called, and fops_get() will fail in try_module_get() and return a NULL pointer. This change checks the fops_get() return value and returns -ENODEV if NULL. Reported-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Acked-by: Takashi Iwai <tiwai@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-01-06 15:59:11 -08:00
..
accessibility
acpi	cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t	2009-01-03 19:15:40 +01:00
amba
ata	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2008-12-30 17:43:10 -08:00
atm	atm: Driver for Solos PCI ADSL2+ card.	2008-12-26 01:26:11 -08:00
auxdisplay
base	mm: show node to memory section relationship with symlinks in sysfs	2009-01-06 15:59:00 -08:00
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus	2008-12-30 17:37:25 -08:00
bluetooth
cdrom	cdrom: reduce stack usage of mmc_ioctl_dvd_read_struct	2008-12-29 08:28:43 +01:00
char	mm: make vread() and vwrite() declaration	2009-01-06 15:59:05 -08:00
clocksource	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
connector
cpufreq
cpuidle
crypto
dca
dio
dma
edac	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2008-12-28 16:54:33 -08:00
eisa
firewire
firmware	DMI: add dmi_match	2008-12-29 07:39:34 -05:00
gpio
gpu	Check fops_get() return value	2009-01-06 15:59:11 -08:00
hid	Merge branch 'upstream-fixes' into for-next	2009-01-04 01:04:09 +01:00
hwmon
i2c	Merge branch 'for-next' of git://git.o-hand.com/linux-mfd	2009-01-05 19:04:09 -08:00
ide	ide-atapi: start dma in a drive-specific way	2009-01-02 16:12:56 +01:00
idle
ieee1394
infiniband	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
input	Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm	2008-12-30 17:36:49 -08:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-01-05 18:44:59 -08:00
leds
lguest	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
macintosh	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2008-12-28 16:54:33 -08:00
mca
md	dm snapshot: extend exception store functions	2009-01-06 03:05:19 +00:00
media	Check fops_get() return value	2009-01-06 15:59:11 -08:00
memstick
message	i2o: Update my address	2009-01-05 18:28:04 -08:00
mfd	mfd: Fix section mismatch in da903x	2009-01-04 15:31:49 +01:00
misc	pci: use pci_ioremap_bar() in drivers/misc	2009-01-06 15:59:10 -08:00
mmc	Merge branch 'master' of ../mmc	2008-12-31 19:56:05 +01:00
mtd	Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6	2009-01-02 15:57:26 -08:00
net	igb: fix anoying type mismatch warning on rx/tx queue sizing	2009-01-05 18:47:12 -08:00
nubus
of
oprofile	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
parisc	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
parport
pci	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu	2009-01-03 12:03:52 -08:00
pcmcia
pnp	percpu: fix percpu accessors to potentially !cpu_possible() cpus: pnpbios	2009-01-01 10:12:14 +10:30
power	power_supply: Add Dialog DA9030 battery charger driver	2009-01-04 12:17:41 +01:00
ps3
rapidio
regulator	mfd: Support configurable numbers of DCDCs and ISINKs on WM8350	2009-01-04 12:17:42 +01:00
rtc	rtc: add alarm/update irq interfaces	2009-01-04 13:33:20 -08:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-01-05 18:44:59 -08:00
sbus
scsi	remove ide-scsi	2009-01-02 16:12:51 +01:00
serial	serial_8250: support for Sealevel Systems Model 7803 COMM+8	2009-01-02 10:19:44 -08:00
sh
sn
spi
ssb
staging	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2008-12-28 12:49:40 -08:00
tc
telephony
thermal
uio
usb	add a vfs_fsync helper	2009-01-05 11:54:28 -05:00
uwb	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream	2009-01-02 13:17:13 +00:00
video	viafb: fix crashes due to 4k stack overflow	2009-01-04 13:33:20 -08:00
virtio	virtio: add PCI device release() function	2008-12-30 09:26:10 +10:30
w1
watchdog	[WATCHDOG] Add support for the WM8350 watchdog	2008-12-31 16:12:54 +00:00
xen	Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-02 11:44:09 -08:00
zorro
Kconfig
Makefile