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Omar Sandoval bdac616db9 loop: fix LOOP_GET_STATUS lock imbalance 
Commit 2d1d4c1e59 made loop_get_status() drop lo_ctx_mutex before
returning, but the loop_get_status_old(), loop_get_status64(), and
loop_get_status_compat() wrappers don't call loop_get_status() if the
passed argument is NULL. The callers expect that the lock is dropped, so
make sure we drop it in that case, too.

Reported-by: syzbot+31e8daa8b3fc129e75f2@syzkaller.appspotmail.com
Fixes: 2d1d4c1e59 ("loop: don't call into filesystem while holding lo_ctl_mutex")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2018-04-10 08:38:46 -06:00
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accessibility
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acpi * Add NVDIMM support to EDAC (Tony Luck) 2018-04-05 14:21:13 -07:00
amba
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android
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ata Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2018-04-03 17:42:25 -07:00
atm
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auxdisplay
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base Driver core patches for 4.17-rc1 2018-04-04 19:41:45 -07:00
bcma
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block loop: fix LOOP_GET_STATUS lock imbalance 2018-04-10 08:38:46 -06:00
bluetooth
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bus Staging/IIO patches for 4.17-rc1 2018-04-04 18:56:27 -07:00
cdrom
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char kernel.h: Retain constant expression output for max()/min() 2018-04-05 14:17:16 -07:00
clk
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clocksource
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connector
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cpufreq Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
cpuidle
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crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-04-04 17:11:08 -07:00
dax
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dca
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devfreq
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dio
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dma
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dma-buf
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edac * Add NVDIMM support to EDAC (Tony Luck) 2018-04-05 14:21:13 -07:00
eisa
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extcon Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
firewire
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firmware * Add NVDIMM support to EDAC (Tony Luck) 2018-04-05 14:21:13 -07:00
fmc
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fpga
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fsi
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gpio This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
gpu kernel.h: Retain constant expression output for max()/min() 2018-04-05 14:17:16 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2018-04-05 11:53:34 -07:00
hsi
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hv
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hwmon
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hwspinlock
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hwtracing Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
i2c
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ide for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
idle
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iio This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
infiniband
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input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-04-05 13:21:57 -07:00
iommu
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ipack
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irqchip Staging/IIO patches for 4.17-rc1 2018-04-04 18:56:27 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-04-03 14:04:18 -07:00
leds
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lightnvm
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macintosh
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mailbox
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mcb
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md for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
memory
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memstick
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message
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mfd
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misc for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
mmc for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
mtd for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
mux
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net Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
nfc
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ntb
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nubus
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nvdimm for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
nvme for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
nvmem Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-04-03 14:04:18 -07:00
opp
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oprofile
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parisc
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parport Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
pci
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pcmcia Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
perf arm64 updates for 4.17 2018-04-04 16:01:43 -07:00
phy
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pinctrl This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
platform Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
pnp
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power power supply and reset changes for the v4.17 series 2018-04-03 12:10:01 -07:00
powercap
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pps
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ps3
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ptp
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pwm
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rapidio
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ras
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regulator
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remoteproc
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reset
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rpmsg
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rtc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
s390 for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
sbus
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scsi SCSI for-linus on 20180404 2018-04-05 15:05:53 -07:00
sfi
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sh
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siox
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slimbus
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sn
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soc
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soundwire
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spi spi: SPI updates for v4.17 2018-04-03 12:06:21 -07:00
spmi
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ssb
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staging for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
target for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
tc
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tee
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thermal
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thunderbolt
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tty TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
uio
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usb TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
uwb
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vfio
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vhost
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video TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
virt
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virtio
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visorbus
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vlynq
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vme
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w1
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watchdog This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
xen
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zorro
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Kconfig
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Makefile
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