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Bart Van Assche ccf1e0045e scsi: Rework handling of scsi_device.vpd_pg8[03] 
Introduce struct scsi_vpd for the VPD page length, data and the RCU head
that will be used to free the VPD data. Use kfree_rcu() instead of
kfree() to free VPD data. Move the VPD buffer pointer check inside the
RCU read lock in the sysfs code. Only annotate pointers that are shared
across threads with __rcu. Use rcu_dereference() when dereferencing an
RCU pointer. This patch suppresses about twenty sparse complaints about
the vpd_pg8[03] pointers. This patch also fixes a race condition, namely
that updating of the VPD pointers and length variables in struct
scsi_device was not atomic with reference to the code reading these
variables. See also "Does the update code tolerate concurrent accesses?"
in Documentation/RCU/checklist.txt.

Fixes: commit 09e2b0b146 ("scsi: rescan VPD attributes")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Shane Seymour <shane.seymour@hpe.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2017-08-29 21:51:42 -04:00
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accessibility
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acpi Merge branches 'acpi-soc', 'acpi-wdat' and 'acpi-cppc' 2017-08-03 20:30:18 +02:00
amba
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android binder: Use wake up hint for synchronous transactions. 2017-07-17 14:44:19 +02:00
ata libata: fix a couple of doc build warnings 2017-07-31 08:03:06 -07:00
atm atm: zatm: Fix an error handling path in 'zatm_init_one()' 2017-07-18 11:37:46 -07:00
auxdisplay
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base dma mapping fixes for 4.13-rc2: 2017-07-25 17:17:18 -07:00
bcma
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block scsi: cciss: Drop obsolete driver 2017-08-24 22:28:57 -04:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-07-05 12:31:59 -07:00
bus bus: uniphier-system-bus: set up registers when resuming 2017-08-04 12:57:18 +02:00
cdrom block: don't set bounce limit in blk_init_queue 2017-06-27 12:13:45 -06:00
char Add wait_for_random_bytes() and get_random_*_wait() functions so that 2017-07-15 12:44:02 -07:00
clk clk: keystone: sci-clk: Fix sci_clk_get 2017-08-02 18:37:26 -07:00
clocksource clocksource/drivers/timer-of: Handle of_irq_get_byname() result correctly 2017-07-17 22:43:00 +02:00
connector
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cpufreq Merge branches 'pm-cpufreq-x86', 'pm-cpufreq-docs' and 'intel_pstate' 2017-08-03 20:29:24 +02:00
cpuidle powerpc updates for 4.13 2017-07-07 13:55:45 -07:00
crypto crypto: brcm - remove BCM_PDC_MBOX dependency in Kconfig 2017-07-18 17:01:08 +08:00
dax - A few DM integrity fixes that improve performance. One that address 2017-07-28 12:17:17 -07:00
dca
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devfreq PM / devfreq: constify attribute_group structures. 2017-07-06 10:17:24 +09:00
dio
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dma dmaengine updates for 4.13-rc1 2017-07-08 12:36:50 -07:00
dma-buf Merge branch 'drm-misc-next-fixes' into drm-misc-fixes 2017-07-17 11:56:07 -04:00
edac EDAC, pnd2: Fix Apollo Lake DIMM detection 2017-06-29 10:37:50 +02:00
eisa
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extcon
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firewire
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firmware efi: avoid fortify checks in EFI stub 2017-07-12 16:26:02 -07:00
fmc
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fpga
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fsi drivers/fsi: fix fsi_slave_mode prototype 2017-07-17 16:13:54 +02:00
gpio gpio: tegra: fix unbalanced chained_irq_enter/exit 2017-08-02 10:42:38 +02:00
gpu Merge branch 'drm-fixes-4.13' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 2017-08-04 11:43:14 +10:00
hid HID: ortek: add one more buggy device 2017-07-24 17:38:21 +02:00
hsi HSI changes for the v4.13 series 2017-07-04 14:28:22 -07:00
hv vmbus: re-enable channel tasklet 2017-07-17 15:00:47 +02:00
hwmon hwmon: (applesmc) Avoid buffer overruns 2017-07-15 16:38:56 -07:00
hwspinlock
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hwtracing Char/Misc patches for 4.13-rc1 2017-07-03 20:55:59 -07:00
i2c Merge branch 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2017-07-12 10:04:56 -07:00
ide ide: avoid warning for timings calculation 2017-07-21 04:37:22 +01:00
idle intel_idle: Use more common logging style 2017-06-29 22:58:35 +02:00
iio hwmon updates for v4.13: 2017-07-04 11:48:27 -07:00
infiniband RDMA/core: Initialize port_num in qp_attr 2017-07-20 11:24:13 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2017-07-14 22:53:37 -07:00
iommu iommu/amd: Fix schedule-while-atomic BUG in initialization code 2017-07-26 15:39:14 +02:00
ipack
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irqchip irqchip/digicolor: Drop unnecessary static 2017-07-18 21:59:23 +02:00
isdn isdn/i4l: fix buffer overflow 2017-08-02 20:43:36 -07:00
leds LED updates for 4.13 2017-07-06 11:32:40 -07:00
lguest
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lightnvm lightnvm: pblk: advance bio according to lba index 2017-07-28 08:06:00 -06:00
macintosh Merge branch 'work.misc-set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-07-05 13:13:32 -07:00
mailbox mailbox: pcc: Fix crash when request PCC channel 0 2017-07-26 02:11:47 +02:00
mcb
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md Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2017-07-28 12:24:21 -07:00
media media: platform: davinci: drop VPFE_CMD_S_CCDC_RAW_PARAMS 2017-07-26 06:14:33 -04:00
memory ARM: SoC driver updates 2017-07-04 14:47:47 -07:00
memstick
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message scsi: mptsas: Fixup device hotplug for VMWare ESXi 2017-08-25 17:32:42 -04:00
mfd chrome-platform-for-linus-4.13 2017-07-11 09:55:47 -07:00
misc powerpc updates for 4.13 2017-07-07 13:55:45 -07:00
mmc mmc: block: bypass the queue even if usage is present for hotplug 2017-08-03 11:00:39 +02:00
mtd MTD updates for v4.13-rc1: 2017-07-13 12:07:44 -07:00
mux mux: mux-core: unregister mux_class in mux_exit() 2017-07-17 16:38:35 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-07-31 22:36:42 -07:00
nfc NFC 4.13 pull request 2017-07-01 14:30:39 -07:00
ntb ntb: Add error path/handling to Debug FS entry creation 2017-07-06 11:30:08 -04:00
nubus
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nvdimm libnvdimm: fix badblock range handling of ARS range 2017-07-17 11:43:58 -07:00
nvme nvme: validate admin queue before unquiesce 2017-07-26 17:41:41 +02:00
nvmem nvmem: rockchip-efuse: amend compatible rk322x-efuse to rk3228-efuse 2017-07-17 16:15:57 +02:00
of Merge remote-tracking branches 'asoc/fix/dpcm', 'asoc/fix/imx', 'asoc/fix/msm8916', 'asoc/fix/multi-pcm', 'asoc/fix/of-graph' and 'asoc/fix/pxa' into asoc-linus 2017-08-01 15:17:06 +01:00
oprofile
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parisc parisc: pdc_stable: Fix locking when creating sysfs links 2017-07-31 16:43:13 +02:00
parport
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pci Power management fixes for v4.13-rc1 2017-07-14 22:24:25 -07:00
pcmcia
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perf drivers/perf: arm_pmu: Request PMU SPIs with IRQF_PER_CPU 2017-07-27 13:43:22 +01:00
phy phy: bcm-ns-usb3: fix MDIO_BUS dependency 2017-07-27 17:20:19 -07:00
pinctrl pinctrl: stm32: select IRQ_DOMAIN_HIERARCHY instead of depends on 2017-08-01 10:04:41 +02:00
platform platform/x86: intel-vbtn: match power button on press rather than release 2017-08-05 14:37:19 -07:00
pnp This is the bulk of GPIO changes for the v4.13 series: 2017-07-07 12:40:27 -07:00
power power supply and reset changes for the v4.13 series (part 2) 2017-07-13 11:47:59 -07:00
powercap powercap/RAPL: prevent overridding bits outside of the mask 2017-06-28 00:38:34 +02:00
pps
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ps3
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ptp ptp: dte: Use LL suffix for 64-bit constants 2017-07-06 11:40:58 +01:00
pwm pwm: Changes for v4.13-rc1 2017-07-13 11:49:52 -07:00
rapidio
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ras arm64 updates for 4.13: 2017-07-05 17:09:27 -07:00
regulator Merge remote-tracking branches 'regulator/topic/settle', 'regulator/topic/tps65910' and 'regulator/topic/tps65917' into regulator-next 2017-07-03 16:52:21 +01:00
remoteproc remoteproc/keystone: Fix circular dependencies for ARM configs 2017-06-27 16:21:34 -07:00
reset ARM: SoC driver updates 2017-07-04 14:47:47 -07:00
rpmsg rpmsg updates for v4.13 2017-07-06 15:38:31 -07:00
rtc RTC for 4.13 2017-07-13 12:15:06 -07:00
s390 scsi: zfcp: early returns for traces disabled via level 2017-08-10 19:37:03 -04:00
sbus sbus: Convert to using %pOF instead of full_name 2017-07-20 12:37:10 -07:00
scsi scsi: Rework handling of scsi_device.vpd_pg8[03] 2017-08-29 21:51:42 -04:00
sfi
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sh drivers/sh/intc/virq.c: delete an error message for a failed memory allocation in add_virq_to_pirq() 2017-07-06 16:24:30 -07:00
sn
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soc soc: zte: Restrict SOC_ZTE to ARCH_ZX or COMPILE_TEST 2017-07-27 13:12:34 +02:00
spi Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-07-08 10:41:53 -07:00
spmi spmi: pmic-arb: Always allocate ppid_to_apid table 2017-07-17 15:00:47 +02:00
ssb
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staging scsi: visorhba: sanitze private device data allocation 2017-08-25 17:21:12 -04:00
target Add wait_for_random_bytes() and get_random_*_wait() functions so that 2017-07-15 12:44:02 -07:00
tc
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tee
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thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2017-07-14 13:12:32 -07:00
thunderbolt Merge branches 'pm-core' and 'pm-misc' 2017-08-03 20:29:45 +02:00
tty gpio: exar: Use correct property prefix and document bindings 2017-08-01 13:43:55 +02:00
uio
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usb scsi: uas: move eh_bus_reset_handler to eh_device_reset_handler 2017-08-25 17:21:10 -04:00
uwb driver core patches for 4.13-rc1 2017-07-03 20:27:48 -07:00
vfio vfio/pci: Fix handling of RC integrated endpoint PCIe capability size 2017-07-27 10:39:33 -06:00
vhost Revert "vhost: cache used event for better performance" 2017-07-29 14:15:56 -07:00
video Merge branch 'akpm' (patches from Andrew) 2017-07-13 12:38:49 -07:00
virt
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virtio scsi: virtio: Reduce BUG if total_sg > virtqueue size to WARN. 2017-08-24 22:28:51 -04:00
vlynq
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vme
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w1 w1: omap-hdq: fix error return code in omap_hdq_probe() 2017-07-17 16:48:15 +02:00
watchdog Merge git://www.linux-watchdog.org/linux-watchdog 2017-07-11 09:59:37 -07:00
xen xen: dont fiddle with event channel masking in suspend/resume 2017-07-27 19:55:46 +02:00
zorro
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Kconfig
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Makefile
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