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Sawan Chandak b95b9452aa scsi: qla2xxx: Fix crash due to mismatch mumber of Q-pair creation for Multi queue 
when driver is loaded with Multi Queue enabled, it was noticed that
there was one less queue pair created.

Following message would indicate this:

"No resources to create additional q pair."

The result of one less queue pair means that system can crash, if the
block mq layer thinks there is an extra hardware queue available, and
the driver will use a NULL ptr qpair in that instance.

Following stack trace is seen in one of the crash:

irq_create_affinity_masks+0x98/0x530
irq_create_affinity_masks+0x98/0x530
__pci_enable_msix+0x321/0x4e0
mutex_lock+0x12/0x40
pci_alloc_irq_vectors_affinity+0xb5/0x140
qla24xx_enable_msix+0x79/0x530 [qla2xxx]
qla2x00_request_irqs+0x61/0x2d0 [qla2xxx]
qla2x00_probe_one+0xc73/0x2390 [qla2xxx]
ida_simple_get+0x98/0x100
kernfs_next_descendant_post+0x40/0x50
local_pci_probe+0x45/0xa0
pci_device_probe+0xfc/0x140
driver_probe_device+0x2c5/0x470
__driver_attach+0xdd/0xe0
driver_probe_device+0x470/0x470
bus_for_each_dev+0x6c/0xc0
driver_attach+0x1e/0x20
bus_add_driver+0x45/0x270
driver_register+0x60/0xe0
__pci_register_driver+0x4c/0x50
qla2x00_module_init+0x1ce/0x21e [qla2xxx]

Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2017-05-24 21:55:50 -04:00
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accessibility
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acpi libnvdimm for 4.12 2017-05-05 18:49:20 -07:00
amba
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android
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ata Merge branch 'for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2017-05-01 13:34:49 -07:00
atm
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auxdisplay Merge branch 'for-4.11/libnvdimm' into for-4.12/dax 2017-04-12 21:59:01 -07:00
base DeviceTree for 4.12: 2017-05-05 19:33:07 -07:00
bcma
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block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-05-06 11:25:08 -07:00
bluetooth Bluetooth: hci_ldisc: Add protocol check to hci_uart_tx_wakeup() 2017-04-30 12:22:14 +02:00
bus
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cdrom scsi: introduce a result field in struct scsi_request 2017-04-20 12:16:10 -06:00
char char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
clk MMC core: 2017-05-02 17:34:32 -07:00
clocksource Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-01 16:15:18 -07:00
connector
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cpufreq Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-01 19:12:53 -07:00
cpuidle Merge branches 'pm-cpuidle', 'pm-core', 'pm-domains', 'pm-avs' and 'pm-devfreq' 2017-04-28 23:15:34 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-05-02 15:53:46 -07:00
dax libnvdimm for 4.12 2017-05-05 18:49:20 -07:00
dca
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devfreq
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dio
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dma
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dma-buf dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro 2017-04-20 13:47:46 +05:30
edac EDAC, ghes: Do not enable it by default 2017-04-27 14:15:38 +02:00
eisa
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extcon
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firewire
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firmware arm64 updates for 4.12: 2017-05-05 12:11:37 -07:00
fmc
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fpga fpga fr br: update supported version numbers 2017-04-26 11:38:56 +02:00
fsi
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gpio char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
gpu media updates for v4.12-rc1 2017-05-05 17:34:57 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2017-05-02 19:09:35 -07:00
hsi HSI: ssi_protocol: double free in ssip_pn_xmit() 2017-04-21 17:58:45 +02:00
hv char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
hwmon hwmon: (twl4030-madc) drop driver 2017-04-30 11:45:31 -07:00
hwspinlock
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hwtracing char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
i2c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2017-05-03 12:38:20 -07:00
ide ide-pm: always pass 0 error to ide_complete_rq in ide_do_devset 2017-04-26 07:53:35 -06:00
idle
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iio Staging/IIO patches for 4.12-rc1 2017-05-05 18:16:23 -07:00
infiniband char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
input char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
iommu extra pull request because I missed tegra. 2017-05-05 17:18:44 -07:00
ipack
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irqchip irqchip/mbigen: Fix return value check in mbigen_device_probe() 2017-04-30 11:21:16 +02:00
isdn
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leds leds: pca9532: Extend pca9532 device tree support 2017-04-19 20:27:50 +02:00
lguest
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lightnvm lightnvm: fix bad back free on error path 2017-05-04 07:53:04 -06:00
macintosh DeviceTree for 4.12: 2017-05-05 19:33:07 -07:00
mailbox mailbox: handle empty message in tx_tick 2017-04-27 16:20:04 +05:30
mcb
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md Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-05-06 11:25:08 -07:00
media Staging/IIO patches for 4.12-rc1 2017-05-05 18:16:23 -07:00
memory - New Drivers 2017-05-03 12:16:25 -07:00
memstick
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message scsi: mpt: Move scsi_remove_host() out of mptscsih_remove_host() 2017-04-24 18:21:17 -04:00
mfd mfd: axp20x: Support AXP803 variant 2017-04-27 11:54:49 +01:00
misc powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
mmc MMC core: 2017-05-02 17:34:32 -07:00
mtd Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-05-06 11:25:08 -07:00
net qede: Fix possible misconfiguration of advertised autoneg value. 2017-05-04 12:31:03 -04:00
nfc nfc: fix get_unaligned_...() misuses 2017-04-17 00:42:22 +02:00
ntb
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nubus nubus: Clean up whitespace 2017-04-20 09:54:24 +02:00
nvdimm libnvdimm for 4.12 2017-05-05 18:49:20 -07:00
nvme lightnvm: create cmd before allocating request 2017-05-04 07:53:04 -06:00
nvmem
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of DeviceTree for 4.12: 2017-05-05 19:33:07 -07:00
oprofile
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parisc
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parport
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pci main drm pull request for 4.12 kernel 2017-05-03 11:44:24 -07:00
pcmcia
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perf
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phy
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pinctrl Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2017-05-02 19:09:35 -07:00
platform char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
pnp
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power ACPI updates for v4.12-rc1 2017-05-01 14:13:28 -07:00
powercap
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pps
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ps3
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ptp Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-01 16:15:18 -07:00
pwm
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rapidio char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
ras
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regulator Merge remote-tracking branch 'regulator/topic/vctrl' into regulator-next 2017-04-30 22:17:44 +09:00
remoteproc
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reset
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rpmsg
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rtc
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s390 * ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU 2017-05-08 12:37:56 -07:00
sbus
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scsi scsi: qla2xxx: Fix crash due to mismatch mumber of Q-pair creation for Multi queue 2017-05-24 21:55:50 -04:00
sfi
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sh
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sn
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soc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00
spi Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next 2017-04-26 15:58:22 +01:00
spmi
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ssb
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staging Staging/IIO patches for 4.12-rc1 2017-05-05 18:16:23 -07:00
target Merge branch 'for-4.12/block' of git://git.kernel.dk/linux-block 2017-05-01 10:39:57 -07:00
tc
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thermal - New Drivers 2017-05-03 12:16:25 -07:00
thunderbolt
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tty DeviceTree for 4.12: 2017-05-05 19:33:07 -07:00
uio
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usb DeviceTree for 4.12: 2017-05-05 19:33:07 -07:00
uwb
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vfio powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
vhost VSOCK: Add virtio vsock vsockmon hooks 2017-04-24 12:35:56 -04:00
video - New Drivers 2017-05-03 12:11:44 -07:00
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 watchdog: iTCO_wdt: Add PMC specific noreboot update api 2017-04-28 21:51:28 +03:00
xen xen: Implement EFI reset_system callback 2017-05-02 12:06:50 +02:00
zorro
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Kconfig
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Makefile libnvdimm for 4.12 2017-05-05 18:49:20 -07:00