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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>		16 years ago
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b2c2	V4L/DVB (9811): Add support for the CX24113 DVB-S tuner driver	16 years ago
bt8xx	…
dm1105	…
dvb-core	Check fops_get() return value	16 years ago
dvb-usb	V4L/DVB (10140): gp8psk: fix incorrect return code (EINVAL instead of -EINVAL)	16 years ago
frontends	V4L/DVB (10165): Add FE_CAN_2G_MODULATION flag to frontends that support DVB-S2	16 years ago
pluto2	…
siano	V4L/DVB (10168): sms1xxx: fix inverted gpio for lna control on tiger r2	16 years ago
ttpci	V4L/DVB (10138): v4l2-ioctl: change to long return type to match unlocked_ioctl.	16 years ago
ttusb-budget	V4L/DVB (10149): ttusb-budget: make it depend on PCI	16 years ago
ttusb-dec	V4L/DVB (10150): ttusb-dec: make it depend on PCI	16 years ago
Kconfig	…
Makefile	…