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linux/drivers
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Manjunath Patil 6cc4a0863c xen-blkfront: fix kernel panic with negotiate_mq error path 
info->nr_rings isn't adjusted in case of ENOMEM error from
negotiate_mq(). This leads to kernel panic in error path.

Typical call stack involving panic -
 #8 page_fault at ffffffff8175936f
    [exception RIP: blkif_free_ring+33]
    RIP: ffffffffa0149491  RSP: ffff8804f7673c08  RFLAGS: 00010292
 ...
 #9 blkif_free at ffffffffa0149aaa [xen_blkfront]
 #10 talk_to_blkback at ffffffffa014c8cd [xen_blkfront]
 #11 blkback_changed at ffffffffa014ea8b [xen_blkfront]
 #12 xenbus_otherend_changed at ffffffff81424670
 #13 backend_changed at ffffffff81426dc3
 #14 xenwatch_thread at ffffffff81422f29
 #15 kthread at ffffffff810abe6a
 #16 ret_from_fork at ffffffff81754078

Cc: stable@vger.kernel.org
Fixes: 7ed8ce1c5f ("xen-blkfront: move negotiate_mq to cover all cases of new VBDs")
Signed-off-by: Manjunath Patil <manjunath.b.patil@oracle.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2018-11-06 10:33:36 +01:00
..
accessibility
acpi Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 16:16:40 +01:00
amba
android
ata for-4.20/libata-20181021 2018-10-22 18:03:31 +01:00
atm atm: zatm: Fix empty body Clang warnings 2018-10-18 15:39:10 -07:00
auxdisplay
base Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 15:00:03 +01:00
bcma
block xen-blkfront: fix kernel panic with negotiate_mq error path 2018-11-06 10:33:36 +01:00
bluetooth Bluetooth: hci_qca: Add support for controller debug logs. 2018-10-18 09:55:16 +02:00
bus This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
cdrom gdrom: convert to blk-mq 2018-10-16 09:50:39 -06:00
char Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-10-23 10:22:33 +01:00
clk One fix for the Allwinner A10 SoC's audio PLL that wasn't properly set 2018-10-17 13:40:10 +02:00
clocksource arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
connector
cpufreq Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 16:16:40 +01:00
cpuidle cpuidle: menu: Avoid computations when result will be discarded 2018-10-18 09:34:13 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
dax device-dax: Add missing address_space_operations 2018-09-22 09:07:33 -07:00
dca
devfreq PM / devfreq: remove redundant null pointer check before kfree 2018-10-02 10:16:41 +09:00
dio
dma
dma-buf
edac Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
eisa
extcon
firewire
firmware EFI updates for v4.20: 2018-09-27 16:58:49 +02:00
fmc
fpga fpga: bridge: fix obvious function documentation error 2018-09-30 08:49:55 -07:00
fsi
gnss
gpio This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
gpu Second pull request for v4.19: 2018-10-20 12:26:26 +10:00
hid HID: intel-ish-hid: Enable Ice Lake mobile 2018-09-24 11:46:15 +02:00
hsi
hv Drivers: hv: vmbus: Use get/put_cpu() in vmbus_connect() 2018-09-30 08:49:55 -07:00
hwmon Lots of small changes to the IPMI driver. Most of the changes 2018-10-23 09:42:05 +01:00
hwspinlock
hwtracing
i2c This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
ide block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
iio Merge remote-tracking branches 'regmap/topic/noinc' and 'regmap/topic/single-rw' into regmap-next 2018-10-21 12:07:26 +01:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-19 11:03:06 -07:00
input regmap: Updates for v5.0 2018-10-23 01:17:27 +01:00
iommu Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:05:28 +01:00
ipack
irqchip
isdn mISDN: Fix type of switch control variable in ctrl_teimanager 2018-10-22 19:30:24 -07:00
leds leds: sc27xx: Add pattern_set/clear interfaces for LED controller 2018-10-11 21:59:11 +02:00
lightnvm lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
macintosh
mailbox
mcb
md for-4.20/block-20181021 2018-10-22 17:46:08 +01:00
media media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 06:32:51 -04:00
memory
memstick block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
message
mfd regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
misc Merge branch 'linus' into x86/core, to pick up fixes 2018-10-04 08:23:03 +02:00
mmc Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
mtd SPI NOR changes: 2018-10-23 01:09:22 +01:00
mux This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
nfc
ntb
nubus
nvdimm block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
nvme for-4.20/block-20181021 2018-10-22 17:46:08 +01:00
nvmem
of First batch of dma-mapping changes for 4.20: 2018-10-22 18:16:03 +01:00
opp PM / OPP: _of_add_opp_table_v2(): increment count only if OPP is added 2018-10-04 09:21:36 +05:30
oprofile
parisc parisc: Add alternative coding infrastructure 2018-10-17 17:22:26 +02:00
parport
pci Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-10-23 10:22:33 +01:00
perf arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
pinctrl This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
platform Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
pnp
power
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
pps
ps3
ptp ptp: ptp_dte: simplify getting .driver_data 2018-10-22 19:48:35 -07:00
pwm
rapidio
ras
regulator regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
remoteproc
reset
rpmsg
rtc
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
sbus oradax: remove redundant null check before kfree 2018-10-07 22:42:00 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
sfi
sh
siox
slimbus
sn
soc net/kconfig: Make QCOM_QMI_HELPERS available when COMPILE_TEST 2018-10-24 08:11:35 +01:00
soundwire
spi Merge remote-tracking branch 'spi/topic/of' into spi-next 2018-10-21 17:00:17 +01:00
spmi
ssb ssb: chipcommon: fix fall-through annotation 2018-10-05 11:37:20 +03:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
target block: Finish renaming REQ_DISCARD into REQ_OP_DISCARD 2018-10-03 16:12:28 -06:00
tc
tee
thermal x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
thunderbolt thunderbolt: Initialize after IOMMUs 2018-10-02 10:51:16 -07:00
tty This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
uio
usb usb: gadget: storage: Fix Spectre v1 vulnerability 2018-10-17 20:57:55 +02:00
uwb
vfio
vhost net: vhost: remove bad code line 2018-10-07 21:31:32 -07:00
video mach64: detect the dot clock divider correctly on sparc 2018-10-07 22:41:05 -07:00
virt
virtio
visorbus
vlynq
vme
w1
watchdog
xen xen/grant-table: Fix incorrect gnttab_dma_free_pages() pr_debug message 2018-11-06 10:06:07 +01:00
zorro
Kconfig
Makefile