George Cherian 1ecbd7170d ACPI / CPPC: Fix KASAN global out of bounds warning ... Default value of pcc_subspace_idx is -1. Make sure to check pcc_subspace_idx before using the same as array index. This will avoid following KASAN warnings too. [ 15.113449] ================================================================== [ 15.116983] BUG: KASAN: global-out-of-bounds in cppc_get_perf_caps+0xf3/0x3b0 [ 15.116983] Read of size 8 at addr ffffffffb9a5c0d8 by task swapper/0/1 [ 15.116983] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 4.15.0-rc2+ #2 [ 15.116983] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.2.8 01/26/2016 [ 15.116983] Call Trace: [ 15.116983] dump_stack+0x7c/0xbb [ 15.116983] print_address_description+0x1df/0x290 [ 15.116983] kasan_report+0x28a/0x370 [ 15.116983] ? cppc_get_perf_caps+0xf3/0x3b0 [ 15.116983] cppc_get_perf_caps+0xf3/0x3b0 [ 15.116983] ? cpc_read+0x210/0x210 [ 15.116983] ? __rdmsr_on_cpu+0x90/0x90 [ 15.116983] ? rdmsrl_on_cpu+0xa9/0xe0 [ 15.116983] ? rdmsr_on_cpu+0x100/0x100 [ 15.116983] ? wrmsrl_on_cpu+0x9c/0xd0 [ 15.116983] ? wrmsrl_on_cpu+0x9c/0xd0 [ 15.116983] ? wrmsr_on_cpu+0xe0/0xe0 [ 15.116983] __intel_pstate_cpu_init.part.16+0x3a2/0x530 [ 15.116983] ? intel_pstate_init_cpu+0x197/0x390 [ 15.116983] ? show_no_turbo+0xe0/0xe0 [ 15.116983] ? __lockdep_init_map+0xa0/0x290 [ 15.116983] intel_pstate_cpu_init+0x30/0x60 [ 15.116983] cpufreq_online+0x155/0xac0 [ 15.116983] cpufreq_add_dev+0x9b/0xb0 [ 15.116983] subsys_interface_register+0x1ae/0x290 [ 15.116983] ? bus_unregister_notifier+0x40/0x40 [ 15.116983] ? mark_held_locks+0x83/0xb0 [ 15.116983] ? _raw_write_unlock_irqrestore+0x32/0x60 [ 15.116983] ? intel_pstate_setup+0xc/0x104 [ 15.116983] ? intel_pstate_setup+0xc/0x104 [ 15.116983] ? cpufreq_register_driver+0x1ce/0x2b0 [ 15.116983] cpufreq_register_driver+0x1ce/0x2b0 [ 15.116983] ? intel_pstate_setup+0x104/0x104 [ 15.116983] intel_pstate_register_driver+0x3a/0xa0 [ 15.116983] intel_pstate_init+0x3c4/0x434 [ 15.116983] ? intel_pstate_setup+0x104/0x104 [ 15.116983] ? intel_pstate_setup+0x104/0x104 [ 15.116983] do_one_initcall+0x9c/0x206 [ 15.116983] ? parameq+0xa0/0xa0 [ 15.116983] ? initcall_blacklisted+0x150/0x150 [ 15.116983] ? lock_downgrade+0x2c0/0x2c0 [ 15.116983] kernel_init_freeable+0x327/0x3f0 [ 15.116983] ? start_kernel+0x612/0x612 [ 15.116983] ? _raw_spin_unlock_irq+0x29/0x40 [ 15.116983] ? finish_task_switch+0xdd/0x320 [ 15.116983] ? finish_task_switch+0x8e/0x320 [ 15.116983] ? rest_init+0xd0/0xd0 [ 15.116983] kernel_init+0xf/0x11a [ 15.116983] ? rest_init+0xd0/0xd0 [ 15.116983] ret_from_fork+0x24/0x30 [ 15.116983] The buggy address belongs to the variable: [ 15.116983] __key.36299+0x38/0x40 [ 15.116983] Memory state around the buggy address: [ 15.116983] ffffffffb9a5bf80: fa fa fa fa 00 fa fa fa fa fa fa fa 00 fa fa fa [ 15.116983] ffffffffb9a5c000: fa fa fa fa 00 fa fa fa fa fa fa fa 00 fa fa fa [ 15.116983] >ffffffffb9a5c080: fa fa fa fa 00 fa fa fa fa fa fa fa 00 00 00 00 [ 15.116983] ^ [ 15.116983] ffffffffb9a5c100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.116983] ffffffffb9a5c180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.116983] ================================================================== Fixes: 85b1407bf6 (ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs) Reported-by: Changbin Du <changbin.du@intel.com> Signed-off-by: George Cherian <george.cherian@cavium.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2017-12-05 23:25:49 +01:00
..
accessibility
acpi	ACPI / CPPC: Fix KASAN global out of bounds warning	2017-12-05 23:25:49 +01:00
amba	A couple of dma-mapping updates:	2017-11-14 16:54:12 -08:00
android	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
ata	Merge branch 'for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata	2017-11-15 14:11:41 -08:00
atm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-29 13:10:25 -08:00
auxdisplay	auxdisplay: img-ascii-lcd: Only build on archs that have IOMEM	2017-11-27 12:36:45 -08:00
base	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
bcma	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-11-15 11:56:19 -08:00
block	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-12-01 08:05:45 -05:00
bluetooth
bus	ARM: SoC driver updates for v4.15	2017-11-16 16:05:01 -08:00
cdrom	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
char	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-26 14:11:54 -08:00
clk	We have two changes to the core framework this time around. The first being a	2017-11-17 20:04:24 -08:00
clocksource	- final batch of "non trivial" timer conversions (multi-tree dependencies,	2017-11-23 16:29:05 +01:00
connector
cpufreq	cpufreq: mediatek: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE	2017-11-22 00:00:14 +01:00
cpuidle	powerpc updates for 4.15	2017-11-16 12:47:46 -08:00
crypto	powerpc updates for 4.15	2017-11-16 12:47:46 -08:00
dax	device-dax: implement ->split() to catch invalid munmap attempts	2017-11-29 18:40:42 -08:00
dca
devfreq	Merge branches 'pm-devfreq' and 'pm-tools'	2017-11-13 01:41:39 +01:00
dio
dma	dmaengine updates for 4.15-rc1	2017-11-14 16:49:31 -08:00
dma-buf	Tracing updates for 4.15:	2017-11-17 14:58:01 -08:00
edac	Modules updates for v4.15	2017-11-15 13:46:33 -08:00
eisa
extcon	USB/PHY patches for 4.15-rc1	2017-11-13 21:14:07 -08:00
firewire	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 17:56:58 -08:00
firmware	drivers/firmware: psci: Convert timers to use timer_setup()	2017-11-21 15:46:44 -08:00
fmc
fpga	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
fsi
gpio	This is the bulk of pin control changes for the v4.15	2017-11-16 10:57:11 -08:00
gpu	Merge branch 'drm-fixes-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-fixes	2017-12-01 09:15:57 +10:00
hid	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
hsi	HSI changes for the v4.15 series	2017-11-15 13:35:43 -08:00
hv	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
hwmon	hwmon: (jc42) optionally try to disable the SMBUS timeout	2017-11-30 13:12:44 -08:00
hwspinlock	hwspinlock update for v4.15	2017-11-17 20:16:20 -08:00
hwtracing	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
i2c	i2c: i2c-boardinfo: fix memory leaks on devinfo	2017-11-27 19:14:29 +01:00
ide	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide	2017-11-19 08:04:41 -10:00
idle	Merge branch 'pm-cpuidle'	2017-11-13 01:34:14 +01:00
iio	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
infiniband	IB/core: disable memory registration of filesystem-dax vmas	2017-11-29 18:40:42 -08:00
input	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
iommu	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
ipack
irqchip	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-26 14:39:20 -08:00
isdn	treewide: setup_timer() -> timer_setup() (2 field)	2017-11-21 15:57:09 -08:00
leds	LED updates for 4.15rc1	2017-11-14 18:09:31 -08:00
lightnvm	lightnvm: Convert timers to use timer_setup()	2017-11-21 15:46:44 -08:00
macintosh	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 17:56:58 -08:00
mailbox	Change to POLL api and fixes for FlexRM and OMAP driver	2017-11-15 13:39:18 -08:00
mcb
md	bcache: check return value of register_shrinker	2017-11-24 16:23:01 -07:00
media	v4l2: disable filesystem-dax mapping support	2017-11-29 18:40:42 -08:00
memory	ARM: SoC driver updates for v4.15	2017-11-16 16:05:01 -08:00
memstick	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
message	Modules updates for v4.15	2017-11-15 13:46:33 -08:00
mfd	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
misc	Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2017-12-03 10:48:24 -05:00
mmc	MMC core:	2017-12-01 08:14:22 -05:00
mtd	Rename superblock flags (MS_xyz -> SB_xyz)	2017-11-27 13:05:09 -08:00
mux
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-29 13:10:25 -08:00
nfc	treewide: setup_timer() -> timer_setup() (2 field)	2017-11-21 15:57:09 -08:00
ntb	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
nubus	m68k updates for 4.15	2017-11-13 12:10:24 -08:00
nvdimm	libnvdimm for 4.15	2017-11-17 09:51:57 -08:00
nvme	nvme-pci: fix NULL pointer dereference in nvme_free_host_mem()	2017-11-28 08:49:26 -08:00
nvmem	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
of	DeviceTree fixes for 4.15:	2017-11-20 21:38:41 -10:00
opp
oprofile
parisc
parport	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
pci	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-26 14:11:54 -08:00
pcmcia	drivers/pcmcia/sa1111_badge4.c: avoid unused function warning	2017-11-17 16:10:04 -08:00
perf	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
phy	USB/PHY patches for 4.15-rc1	2017-11-13 21:14:07 -08:00
pinctrl	This is the bulk of pin control changes for the v4.15	2017-11-16 10:57:11 -08:00
platform	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-25 08:37:16 -10:00
pnp
power	power supply and reset changes for the v4.15 series	2017-11-15 13:37:15 -08:00
powercap
pps	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
ps3
ptp	xen: features and fixes for v4.15-rc1	2017-11-16 13:06:27 -08:00
pwm	pwm: Changes for v4.15-rc1	2017-11-22 21:09:18 -10:00
rapidio	Merge branch 'akpm' (patches from Andrew)	2017-11-17 16:56:17 -08:00
ras	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 17:56:58 -08:00
regulator	- New Drivers	2017-11-16 09:15:57 -08:00
remoteproc	remoteproc updates for v4.15	2017-11-17 20:14:10 -08:00
reset	ARM: SoC driver updates for v4.15	2017-11-16 16:05:01 -08:00
rpmsg	rpmsg updates for v4.15	2017-11-17 20:12:08 -08:00
rtc	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-25 08:37:16 -10:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2017-11-30 08:13:36 -08:00
sbus	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc	2017-11-17 20:21:44 -08:00
scsi	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-25 08:37:16 -10:00
sfi
sh	A couple of dma-mapping updates:	2017-11-14 16:54:12 -08:00
sn
soc	ARM: SoC driver updates for v4.15	2017-11-16 16:05:01 -08:00
spi	Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next	2017-11-10 21:33:51 +00:00
spmi
ssb
staging	Rename superblock flags (MS_xyz -> SB_xyz)	2017-11-27 13:05:09 -08:00
target	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-25 08:37:16 -10:00
tc
tee
thermal	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2017-11-17 14:31:27 -08:00
thunderbolt	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
tty	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
uio
usb	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
uwb	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
vfio	VFIO Updates for Linux v4.15	2017-11-14 16:47:47 -08:00
vhost	Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-11-17 12:08:18 -08:00
video	fbdev changes for v4.15:	2017-11-20 21:50:24 -10:00
virt
virtio	virtio_balloon: fix deadlock on OOM	2017-11-14 23:57:38 +02:00
vlynq
vme	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
w1	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
watchdog	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
xen	treewide: Switch DEFINE_TIMER callbacks to struct timer_list *	2017-11-21 15:57:05 -08:00
zorro
Kconfig	Merge branches 'pm-cpufreq-sched' and 'pm-opp'	2017-11-13 01:40:52 +01:00
Makefile	Merge branches 'pm-cpufreq-sched' and 'pm-opp'	2017-11-13 01:40:52 +01:00