Amit Shah 671bdea2b9 virtio: console: fix race in port_fops_open() and port unplug ...

Between open() being called and processed, the port can be unplugged.
Check if this happened, and bail out.

A simple test script to reproduce this is:

while true; do for i in $(seq 1 100); do echo $i > /dev/vport0p3; done; done;

This opens and closes the port a lot of times; unplugging the port while
this is happening triggers the bug.

CC: <stable@vger.kernel.org>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

2013-07-29 14:43:55 +09:30

..

agp

Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

2013-07-09 16:04:31 -07:00

hw_random

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2013-07-13 14:52:21 -07:00

ipmi

char: Convert use of typedef ctl_table to struct ctl_table

2013-06-17 16:43:08 -07:00

mwave

mwave: fix info leak in mwave_ioctl()

2013-07-09 10:33:28 -07:00

pcmcia

Finally eradicate CONFIG_HOTPLUG

2013-06-03 14:20:18 -07:00

tpm

tpm/tpm_i2c_infineon: Remove unused header file

2013-06-28 00:47:43 +02:00

xilinx_hwicap

char: xilinx_hwicap: Fix typo in comment and extend it

2013-05-30 21:46:16 +09:00

apm-emulation.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm

2012-04-05 17:34:30 -07:00

applicom.c

applicom: use correct array offset

2013-03-15 12:23:48 -07:00

applicom.h

…

bfin-otp.c

llseek: automatically add .llseek fop

2010-10-15 15:53:27 +02:00

bsr.c

powerpc/BSR: cleanup the error path of bsr_init

2012-07-17 10:27:38 -07:00

ds1302.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

ds1620.c

ds1620: single_open() leak

2013-05-05 00:11:29 -04:00

dsp56k.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

dtlk.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

efirtc.c

rtc: single_open() leaks

2013-05-05 00:12:29 -04:00

generic_nvram.c

drivers: fix up various ->llseek() implementations

2011-07-20 20:47:58 -04:00

genrtc.c

rtc: single_open() leaks

2013-05-05 00:12:29 -04:00

hangcheck-timer.c

Input: sysrq - drop tty argument form handle_sysrq()

2010-08-21 00:34:45 -07:00

hpet.c

char: Convert use of typedef ctl_table to struct ctl_table

2013-06-17 16:43:08 -07:00

i8k.c

module_param: make bool parameters really bool (drivers & misc)

2012-01-13 09:32:20 +10:30

Kconfig

stallion: final cleanup

2013-06-03 14:31:39 -07:00

lp.c

Char: lp, protect LPGETSTATUS with port_mutex

2013-05-16 18:08:58 -07:00

Makefile

IPMI: Change link order

2012-10-16 18:07:12 -07:00

mbcs.c

char: remove use of __devinitconst

2012-11-21 12:55:19 -08:00

mbcs.h

Fix common misspellings

2011-03-31 11:26:23 -03:00

mem.c

/dev/oldmem: Remove the interface

2013-07-03 16:08:03 -07:00

misc.c

Revert "char: misc: assign file->private_data in all cases"

2013-06-26 10:12:48 -07:00

mmtimer.c

drivers/char/mmtimer.c: Remove useless kfree

2012-09-26 13:20:40 -07:00

msm_smd_pkt.c

drivers/char/msm_smd_pkt.c: don't use IS_ERR()

2011-08-25 16:25:33 -07:00

mspec.c

char: Use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT

2013-05-21 10:07:54 -07:00

nsc_gpio.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

nvram.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

nwbutton.c

drivers/char: removes unnecessary semicolon

2012-09-26 13:20:39 -07:00

nwbutton.h

…

nwflash.c

Merge branch 'late/fixes' into fixes

2012-10-07 07:22:32 -07:00

pc8736x_gpio.c

pc8736x_gpio: use platform_device_unregister in pc8736x_gpio_cleanup()

2012-10-24 15:52:29 -07:00

ppdev.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

ps3flash.c

ps3flash: switch to generic_file_llseek_size()

2013-06-29 12:57:33 +04:00

random.c

char: Convert use of typedef ctl_table to struct ctl_table

2013-06-17 16:43:08 -07:00

raw.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

rtc.c

char: Convert use of typedef ctl_table to struct ctl_table

2013-06-17 16:43:08 -07:00

scx200_gpio.c

llseek: automatically add .llseek fop

2010-10-15 15:53:27 +02:00

snsc_event.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

snsc.c

Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

2010-10-22 10:52:56 -07:00

snsc.h

headers: kobject.h redux

2011-01-10 08:51:44 -08:00

sonypi.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

tb0219.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

tile-srom.c

tile-srom: switch to fixed_size_llseek()

2013-06-29 12:57:51 +04:00

tlclk.c

drivers/char/tlclk.c: fix error return code

2012-08-16 10:09:15 -07:00

toshiba.c

Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

2010-10-22 10:52:56 -07:00

ttyprintk.c

ttyprintk: Fix NULL pointer deref by setting tty_port ops after initializing port

2013-05-21 10:13:23 -07:00

uv_mmtimer.c

BKL: remove extraneous #include <smp_lock.h>

2010-11-17 08:59:32 -08:00

virtio_console.c

virtio: console: fix race in port_fops_open() and port unplug

2013-07-29 14:43:55 +09:30