Mikulas Patocka ef7e7c82e0 loop: fix crash when using unassigned loop device ... When the loop module is loaded, it creates 8 loop devices /dev/loop[0-7]. The devices have no request routine and thus, when they are used without being assigned, a crash happens. For example, these commands cause crash (assuming there are no used loop devices): Kernel Fault: Code=26 regs=000000007f420980 (Addr=0000000000000010) CPU: 1 PID: 50 Comm: kworker/1:1 Not tainted 3.11.0 #1 Workqueue: ksnaphd do_metadata [dm_snapshot] task: 000000007fcf4078 ti: 000000007f420000 task.ti: 000000007f420000 [ 116.319988] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI PSW: 00001000000001001111111100001111 Not tainted r00-03 000000ff0804ff0f 00000000408bf5d0 00000000402d8204 000000007b7ff6c0 r04-07 00000000408a95d0 000000007f420950 000000007b7ff6c0 000000007d06c930 r08-11 000000007f4205c0 0000000000000001 000000007f4205c0 000000007f4204b8 r12-15 0000000000000010 0000000000000000 0000000000000000 0000000000000000 r16-19 000000001108dd48 000000004061cd7c 000000007d859800 000000000800000f r20-23 0000000000000000 0000000000000008 0000000000000000 0000000000000000 r24-27 00000000ffffffff 000000007b7ff6c0 000000007d859800 00000000408a95d0 r28-31 0000000000000000 000000007f420950 000000007f420980 000000007f4208e8 sr00-03 0000000000000000 0000000000000000 0000000000000000 0000000000303000 sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 117.549988] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000402d82fc 00000000402d8300 IIR: 53820020 ISR: 0000000000000000 IOR: 0000000000000010 CPU: 1 CR30: 000000007f420000 CR31: ffffffffffffffff ORIG_R28: 0000000000000001 IAOQ[0]: generic_make_request+0x11c/0x1a0 IAOQ[1]: generic_make_request+0x120/0x1a0 RP(r2): generic_make_request+0x24/0x1a0 Backtrace: [<00000000402d83f0>] submit_bio+0x70/0x140 [<0000000011087c4c>] dispatch_io+0x234/0x478 [dm_mod] [<0000000011087f44>] sync_io+0xb4/0x190 [dm_mod] [<00000000110883bc>] dm_io+0x2c4/0x310 [dm_mod] [<00000000110bfcd0>] do_metadata+0x28/0xb0 [dm_snapshot] [<00000000401591d8>] process_one_work+0x160/0x460 [<0000000040159bc0>] worker_thread+0x300/0x478 [<0000000040161a70>] kthread+0x118/0x128 [<0000000040104020>] end_fault_vector+0x20/0x28 [<0000000040177220>] task_tick_fair+0x420/0x4d0 [<00000000401aa048>] invoke_rcu_core+0x50/0x60 [<00000000401ad5b8>] rcu_check_callbacks+0x210/0x8d8 [<000000004014aaa0>] update_process_times+0xa8/0xc0 [<00000000401ab86c>] rcu_process_callbacks+0x4b4/0x598 [<0000000040142408>] __do_softirq+0x250/0x2c0 [<00000000401789d0>] find_busiest_group+0x3c0/0xc70 [ 119.379988] Kernel panic - not syncing: Kernel Fault Rebooting in 1 seconds.. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>		2013-11-08 09:10:28 -07:00
..
accessibility
acpi	ACPI / PM: Drop two functions that are not used any more	2013-10-17 15:44:48 +02:00
amba
ata	Merge branch 'for-3.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata	2013-10-22 08:21:34 +01:00
atm	atm: nicstar: fix regression made by previous patch	2013-09-15 22:18:55 -04:00
auxdisplay
base	driver core: Release device_hotplug_lock when store_mem_state returns EINVAL	2013-10-16 18:42:41 -07:00
bcma	bcma: make bcma_core_pci_{up,down}() callable from atomic context	2013-09-26 14:02:33 -04:00
block	loop: fix crash when using unassigned loop device	2013-11-08 09:10:28 -07:00
bluetooth	Bluetooth: btusb: Add support for Belkin F8065bf	2013-09-23 17:44:25 -03:00
bus	bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties	2013-10-01 17:04:17 +00:00
cdrom
char	A small fix for Xen on x86_32 and a build fix for xen-tpmfront on arm64.	2013-10-15 16:22:11 -07:00
clk	clk: fixup argument order when setting VCO parameters	2013-10-07 23:01:07 -07:00
clocksource	clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast	2013-09-26 02:31:04 +02:00
connector	connector: use 'size' everywhere in cn_netlink_send()	2013-10-02 16:03:50 -04:00
cpufreq	acpi-cpufreq: Fail initialization if driver cannot be registered	2013-10-25 16:22:47 +02:00
cpuidle	ACPI and power management fixes for 3.12-rc1	2013-09-12 11:22:45 -07:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux	2013-09-07 12:53:35 +10:00
dca
devfreq
dio
dma	dmaengine: edma: fix another memory leak	2013-10-24 22:17:50 +05:30
edac	Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2013-09-06 11:14:33 -07:00
eisa
extcon	Driver core patches for 3.12-rc1	2013-09-03 11:37:15 -07:00
firewire
firmware	firmware/dmi_scan: drop OOM messages	2013-09-11 15:58:51 -07:00
fmc
gpio	gpiolib: let gpiod_request() return -EPROBE_DEFER	2013-10-11 16:31:54 +02:00
gpu	i915: fix compiler warning	2013-10-31 15:28:23 -07:00
hid	HID: wiimote: add LEGO-wiimote VID	2013-10-21 13:39:37 +02:00
hsi
hv	Revert "Drivers: hv: vmbus: Fix a bug in channel rescind code"	2013-10-17 09:30:10 -07:00
hwmon	hwmon: (applesmc) Always read until end of data	2013-10-09 09:48:55 -07:00
hwspinlock
i2c	i2c: i2c-mux-pinctrl: use deferred probe when adapter not found	2013-10-10 10:22:35 +02:00
ide	ide: sgiioc4: Staticize ioc4_ide_attach_one()	2013-09-05 15:21:30 -04:00
idle
iio	iio:buffer: Free active scan mask in iio_disable_all_buffers()	2013-10-15 19:26:43 +01:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-10-27 10:16:33 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2013-10-31 10:38:59 -07:00
iommu	x86, build, pci: Fix PCI_MSI build on !SMP	2013-10-04 10:43:34 -07:00
ipack
irqchip	ARM: SoC late changes for v3.12	2013-09-09 16:35:29 -07:00
isdn	isdn: hfcpci_softirq: get func return to suppress compiler warning	2013-09-15 22:27:04 -04:00
leds	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds	2013-09-12 11:35:33 -07:00
lguest	lguest: fix guest kernel stack overflow when TF bit set.	2013-09-06 08:09:27 +09:30
macintosh
mailbox	mailbox: remove unnecessary platform_set_drvdata()	2013-09-18 12:02:00 -07:00
md	block: Consolidate duplicated bio_trim() implementations	2013-11-08 09:02:31 -07:00
media	[media] saa7134: Fix crash when device is closed before streamoff	2013-10-14 06:37:00 -03:00
memory	ARM: SoC platform changes for 3.12	2013-09-06 13:30:06 -07:00
memstick	memstick: add support for legacy memorysticks	2013-09-11 15:59:35 -07:00
message
mfd	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
misc	mei: cancel stall timers in mei_reset	2013-09-26 13:56:53 -07:00
mmc	ARM: shmobile: update SDHI DT compatibility string to the <unit>-<soc> format	2013-09-21 09:55:32 -07:00
mtd	mtd: gpmi: fix ECC regression	2013-10-25 10:09:43 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-10-23 07:47:42 +01:00
nfc
ntb	ntb: clean up unnecessary MSI/MSI-X capability find	2013-09-05 11:08:01 -07:00
nubus
of	Revert "drivers: of: add initialization code for dma reserved memory"	2013-10-15 09:26:07 +01:00
oprofile	oprofile: get rid of pointless forward declarations of struct super_block	2013-09-03 22:52:48 -04:00
parisc	PCI changes for the v3.12 merge window:	2013-09-03 16:24:35 -07:00
parport
pci	Revert "ACPI / hotplug / PCI: Avoid doing too much for spurious notifies"	2013-10-30 15:28:52 +01:00
pcmcia
pinctrl	pinctrl: palmas: do not abort pin configuration for BIAS_DEFAULT	2013-09-27 16:22:43 +02:00
platform	platform/x86: fix asus-wmi build error	2013-10-23 07:57:57 +01:00
pnp	pnp: change pnp bus pm_ops to invoke pnp driver dev_pm_ops if specified	2013-09-11 15:58:15 -07:00
power	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
pps	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
ps3
ptp
pwm	ARM: SoC cleanups for 3.12	2013-09-06 13:21:16 -07:00
rapidio
regulator	Merge remote-tracking branch 'regulator/fix/wm8350' into regulator-linus	2013-09-30 12:04:33 +01:00
remoteproc
reset
rpmsg
rtc	rtc: simplify devm_request_mem_region/devm_ioremap	2013-09-11 15:58:59 -07:00
s390	s390/time: correct use of store clock fast	2013-10-22 09:16:40 +02:00
sbus
scsi	aacraid: missing capable() check in compat ioctl	2013-10-30 12:24:49 -07:00
sfi
sh
sn
spi	Merge remote-tracking branch 'spi/fix/s3c64xx' into spi-linus	2013-10-07 14:51:59 +01:00
ssb
staging	Staging: sb105x: info leak in mp_get_count()	2013-10-30 12:24:50 -07:00
target	target/pscsi: fix return value check	2013-10-25 10:42:09 -07:00
tc
thermal	Merge branch 'x86_pkg_temp' of .git into for-rc	2013-10-21 11:26:45 +08:00
tty	tty/serial: at91: fix uart/usart selection for older products	2013-10-17 13:27:24 -07:00
uio	Fix a few incorrectly checked [io_]remap_pfn_range() calls	2013-10-29 10:21:34 -07:00
usb	USB: serial: ftdi_sio: add id for Z3X Box device	2013-11-01 09:33:56 -07:00
uwb
vfio	VFIO: vfio_iommu_type1: fix bug caused by break in nested loop	2013-10-11 10:40:46 -06:00
vhost	vhost/scsi: Fix incorrect usage of get_user_pages_fast write parameter	2013-10-25 11:03:34 -07:00
video	Fix a few incorrectly checked [io_]remap_pfn_range() calls	2013-10-29 10:21:34 -07:00
virt
virtio	virtio_pci: pm: Use CONFIG_PM_SLEEP instead of CONFIG_PM	2013-09-09 10:02:53 +09:30
vlynq
vme
w1	w1 - call request_module with w1 master mutex unlocked	2013-10-07 00:12:14 -07:00
watchdog	watchdog: sunxi: Fix section mismatch	2013-10-13 20:02:03 +02:00
xen	Bug-fixes:	2013-09-25 15:50:53 -07:00
zorro
Kconfig
Makefile