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NeilBrown 3ff91afebb md/bitmap: disable bitmap_resize for file-backed bitmaps. 
commit e8a27f836f165c26f867ece7f31eb5c811692319 upstream.

bitmap_resize() does not work for file-backed bitmaps.
The buffer_heads are allocated and initialized when
the bitmap is read from the file, but resize doesn't
read from the file, it loads from the internal bitmap.
When it comes time to write the new bitmap, the bh is
non-existent and we crash.

The common case when growing an array involves making the array larger,
and that normally means making the bitmap larger.  Doing
that inside the kernel is possible, but would need more code.
It is probably easier to require people who use file-backed
bitmaps to remove them and re-add after a reshape.

So this patch disables the resizing of arrays which have
file-backed bitmaps.  This is better than crashing.

Reported-by: Zhilong Liu <zlliu@suse.com>
Fixes: d60b479d17 ("md/bitmap: add bitmap_resize function to allow bitmap resizing.")
Cc: stable@vger.kernel.org (v3.5+).
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
 		2019-07-27 21:44:22 +02:00
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accessibility
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acpi
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amba
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android ANDROID: binder: add hwbinder,vndbinder to BINDER_DEVICES. 2018-02-06 13:12:16 +01:00
ata libata: array underflow in ata_find_dev() 2019-07-27 21:44:15 +02:00
atm
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auxdisplay
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base PM / Domains: Fix unsafe iteration over modified list of device links 2019-07-27 21:44:14 +02:00
battery Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
battery_v2 Import latest Samsung release 2017-04-18 03:43:52 +02:00
bcma
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bif
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block loop: fix concurrent lo_open/lo_release 2018-08-20 11:56:48 +02:00
bluetooth Merge tag 'LA.BR.1.3.6-05410-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2018-02-06 13:11:45 +01:00
bus
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cdrom BACKPORT: block: add blk_rq_set_block_pc() 2017-04-22 23:03:01 +02:00
char virtio-console: avoid DMA from stack 2019-07-27 21:44:06 +02:00
clk This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
clocksource Merge tag 'LA.BR.1.3.6-05410-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2018-02-06 13:11:45 +01:00
connector
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coresight coresight: tmc: Fix use after free issue with tmc read 2017-07-30 10:34:00 -07:00
cpufreq cpufreq: conservative: Allow down_threshold to take values from 1 to 10 2019-07-27 21:44:13 +02:00
cpuidle Merge tag 'LA.BR.1.3.6-05410-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2018-02-06 13:11:45 +01:00
crypto crypto: talitos - Extend max key length for SHA384/512-HMAC and AEAD 2019-07-27 21:44:14 +02:00
dca
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debug Import latest Samsung release 2017-04-18 03:43:52 +02:00
debug_32 Import latest Samsung release 2017-04-18 03:43:52 +02:00
devfreq devfreq_devbw: Assign labels to devbw nodes. 2017-04-18 12:24:57 +02:00
dio
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dma Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
edac This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
eisa
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esoc
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extcon Import latest Samsung release 2017-04-18 03:43:52 +02:00
fingerprint drivers: fingerprint: Kill FEATURE_SPI_WAKELOCK 2017-04-19 17:02:36 +02:00
firewire This is the 3.10.95 stable release 2017-04-18 17:14:54 +02:00
firmware Import T813XXU2BQD1 kernel source changes 2017-04-22 16:30:03 +02:00
gpio Import latest Samsung release 2017-04-18 03:43:52 +02:00
gpu drm: Reject page_flip for !DRIVER_MODESET 2019-07-27 21:42:22 +02:00
hid HID: hid-lg: Fix immediate disconnection of Logitech Rumblepad 2 2019-07-27 21:44:06 +02:00
hsi
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hv
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hwmon This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
hwspinlock
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i2c i2c: fix kernel memory disclosure in dev interface 2019-07-27 21:43:45 +02:00
ide
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idle
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iio iio: Fix error handling in iio_trigger_attach_poll_func 2019-07-27 21:41:56 +02:00
infiniband
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input Input: joydev - do not report stale values on first open 2019-07-27 21:43:45 +02:00
iommu iommu/amd: Finish TLB flush in amd_iommu_unmap() 2019-07-27 21:44:19 +02:00
ipack
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irqchip Import latest Samsung release 2017-04-18 03:43:52 +02:00
isdn
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leds Merge tag 'LA.BR.1.3.6-03510-8976.0' into HEAD 2017-04-18 12:11:50 +02:00
lguest Import latest Samsung release 2017-04-18 03:43:52 +02:00
macintosh
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mailbox
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md md/bitmap: disable bitmap_resize for file-backed bitmaps. 2019-07-27 21:44:22 +02:00
media siano: make it work again with CONFIG_VMAP_STACK 2019-07-27 21:43:54 +02:00
memory
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memstick
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message
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mfd mfd: core: Fix device reference leak in mfd_clone_cell 2019-07-27 21:42:48 +02:00
misc qseecom: fix an app unloading issue when the app is blocked 2018-08-20 12:03:48 +02:00
mmc mmc: mxs-mmc: Fix additional cycles after transmission stop 2019-07-27 21:43:00 +02:00
motor Import latest Samsung release 2017-04-18 03:43:52 +02:00
mtd This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
muic Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
net tun: read vnet_hdr_sz once 2019-07-27 21:44:08 +02:00
nfc Import latest Samsung release 2017-04-18 03:43:52 +02:00
ntb
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nubus
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of Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
oprofile
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parisc
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parport
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pci Merge tag 'LA.BR.1.3.6-04110-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-07-08 18:34:23 +02:00
pcmcia
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phy
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pinctrl pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE 2019-07-27 21:43:46 +02:00
platform Merge tag 'LA.BR.1.3.6-05410-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2018-02-06 13:11:45 +01:00
pnp
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power angler: remove 'reboot edl' interface for security 2018-05-26 00:39:32 +02:00
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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regulator Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
remoteproc
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reset
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rpmsg
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rtc rtc: interface: ignore expired timers when enqueuing new timers 2019-07-27 21:43:55 +02:00
s390 scsi: zfcp: trace HBA FSF response by default on dismiss or timedout late response 2019-07-27 21:44:18 +02:00
sbus
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scsi sd: get disk reference in sd_check_events() 2019-07-27 21:43:57 +02:00
sensorhub Import T713XXU2BQD3 kernel source changes 2017-07-01 12:51:07 +02:00
sensors Import latest Samsung release 2017-04-18 03:43:52 +02:00
sfi
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sh
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slimbus slim-msm: Synchronize SSR callbacks 2017-05-05 19:20:28 +00:00
sn
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soc ASoC: apr: Add validity check to APR port 2018-08-20 12:08:44 +02:00
soundwire
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spi This is the 3.10.97 stable release 2017-04-18 17:17:20 +02:00
spmi Merge tag 'LA.BR.1.3.6-03510-8976.0' into HEAD 2017-04-18 12:11:50 +02:00
ssb
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ssbi
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staging Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
switch
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target target: Avoid mappedlun symlink creation during lun shutdown 2019-07-27 21:44:16 +02:00
tc
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thermal thermal: hwmon: Properly report critical temperature in sysfs 2019-07-27 21:42:22 +02:00
tty vt: fix unchecked __put_user() in tioclinux ioctls 2019-07-27 21:44:14 +02:00
uio uio: fix dmem_region_start computation 2019-07-27 21:42:50 +02:00
usb ACM gadget: fix endianness in notifications 2019-07-27 21:44:04 +02:00
uwb
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vfio
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vhost Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
video fbcon: Fix vc attr at deinit 2019-07-27 21:44:05 +02:00
virt
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virtio
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vlynq
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vme
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w1
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watchdog
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xen This is the 3.10.96 stable release 2017-04-18 17:16:02 +02:00
zorro
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Kconfig msm: gud: Remove gud driver 2017-09-08 18:49:12 +00:00
Makefile msm: gud: Remove gud driver 2017-09-08 18:49:12 +00:00