Konrad Rzeszutek Wilk a94e7cf810 ACPI / cpuidle: Fix NULL pointer issues when cpuidle is disabled ... commit b88a634a90 upstream. If cpuidle is disabled, that means that: per_cpu(acpi_cpuidle_device, pr->id) is set to NULL as the acpi_processor_power_init ends up failing at retval = cpuidle_register_driver(&acpi_idle_driver) (in acpi_processor_power_init) and never sets the per_cpu idle device. So when acpi_processor_hotplug on CPU online notification tries to reference said device it crashes: cpu 3 spinlock event irq 62 BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 IP: [<ffffffff81381013>] acpi_processor_setup_cpuidle_cx+0x3f/0x105 PGD a259b067 PUD ab38b067 PMD 0 Oops: 0002 [#1] SMP odules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi libcrc32c crc32c nouveau mxm_wmi wmi radeon ttm sg sr_mod sd_mod cdrom ata_generic ata_piix libata crc32c_intel scsi_mod atl1c i915 fbcon tileblit font bitblit softcursor drm_kms_helper video xen_blkfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea xenfs xen_privcmd mperf CPU 1 Pid: 3047, comm: bash Not tainted 3.8.0-rc3upstream-00250-g165c029 #1 MSI MS-7680/H61M-P23 (MS-7680) RIP: e030:[<ffffffff81381013>] [<ffffffff81381013>] acpi_processor_setup_cpuidle_cx+0x3f/0x105 RSP: e02b:ffff88001742dca8 EFLAGS: 00010202 RAX: 0000000000010be9 RBX: ffff8800a0a61800 RCX: ffff880105380000 RDX: 0000000000000003 RSI: 0000000000000200 RDI: ffff8800a0a61800 RBP: ffff88001742dce8 R08: ffffffff81812360 R09: 0000000000000200 R10: aaaaaaaaaaaaaaaa R11: 0000000000000001 R12: ffff8800a0a61800 R13: 00000000ffffff01 R14: 0000000000000000 R15: ffffffff81a907a0 FS: 00007fd6942f7700(0000) GS:ffff880105280000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 00000000a6773000 CR4: 0000000000042660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process bash (pid: 3047, threadinfo ffff88001742c000, task ffff880017944000) Stack: 0000000000000150 ffff880100f59e00 ffff88001742dcd8 ffff8800a0a61800 0000000000000000 00000000ffffff01 0000000000000000 ffffffff81a907a0 ffff88001742dd18 ffffffff813815b1 ffff88001742dd08 ffffffff810ae336 Call Trace: [<ffffffff813815b1>] acpi_processor_hotplug+0x7c/0x9f [<ffffffff810ae336>] ? schedule_delayed_work_on+0x16/0x20 [<ffffffff8137ee8f>] acpi_cpu_soft_notify+0x90/0xca [<ffffffff8166023d>] notifier_call_chain+0x4d/0x70 [<ffffffff810bc369>] __raw_notifier_call_chain+0x9/0x10 [<ffffffff81094a4b>] __cpu_notify+0x1b/0x30 [<ffffffff81652cf7>] _cpu_up+0x103/0x14b [<ffffffff81652e18>] cpu_up+0xd9/0xec [<ffffffff8164a254>] store_online+0x94/0xd0 [<ffffffff814122fb>] dev_attr_store+0x1b/0x20 [<ffffffff81216404>] sysfs_write_file+0xf4/0x170 This patch fixes it. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-01-27 20:46:29 -08:00
..
acpica	ACPI: export symbol acpi_get_table_with_size	2012-09-14 10:00:39 -07:00
apei	ACPI, APEI, HEST, Detect duplicated hardware error source ID	2011-07-13 23:27:56 -04:00
ac.c	ACPI/AC: prevent OOPS on some boxes due to missing check power_supply_register() return value check	2012-08-09 08:27:42 -07:00
acpi_ipmi.c
acpi_memhotplug.c
acpi_pad.c	acpi_pad: fix power_saving thread deadlock	2012-07-16 08:47:40 -07:00
atomicio.c	ACPI atomicio: Convert width in bits to bytes in __acpi_ioremap_fast()	2011-11-11 09:37:11 -08:00
battery.c	ACPI / battery: Correct battery capacity values on Thinkpads	2012-12-17 10:49:04 -08:00
blacklist.c
bus.c	ACPI: run _OSC after ACPI_FULL_INITIALIZATION	2012-10-13 05:28:03 +09:00
button.c	ACPI button: remove unused procfs I/F	2011-03-22 23:20:35 -04:00
cm_sbs.c
container.c
custom_method.c	ACPI: Split out custom_method functionality into an own driver	2011-05-29 01:50:40 -04:00
debugfs.c	ACPI: Split out custom_method functionality into an own driver	2011-05-29 01:50:40 -04:00
dock.c
ec_sys.c	ACPI: Remove the unused EC sysdev class	2011-03-18 18:22:20 -04:00
ec.c	ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop	2012-10-21 09:17:09 -07:00
event.c
fan.c
glue.c
hed.c
internal.h	ACPI: Cleanup custom_method debug stuff	2011-05-29 01:50:04 -04:00
Kconfig	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2011-05-29 11:19:16 -07:00
Makefile	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2011-05-29 11:19:16 -07:00
numa.c	ACPI: Store SRAT table revision	2012-01-25 17:24:57 -08:00
nvs.c	ACPI / PM: Use existing ACPI iomaps for NVS save/restore (v2)	2011-02-24 19:58:42 +01:00
osl.c	ACPI: Fix lockdep false positives in acpi_power_off()	2011-07-13 14:49:09 -04:00
pci_bind.c
pci_irq.c
pci_link.c	ACPI: Use syscore_ops instead of sysdev class and sysdev	2011-03-18 18:22:21 -04:00
pci_root.c	PCI: Rework ASPM disable code	2012-02-06 09:24:01 -08:00
pci_slot.c
power.c
proc.c
processor_core.c	cpufreq / ACPI: Fix not loading acpi-cpufreq driver regression	2012-10-02 09:47:41 -07:00
processor_driver.c	ACPI: missing break	2012-12-10 10:45:08 -08:00
processor_idle.c	ACPI / cpuidle: Fix NULL pointer issues when cpuidle is disabled	2013-01-27 20:46:29 -08:00
processor_perflib.c	[CPUFREQ] use dynamic debug instead of custom infrastructure	2011-05-04 11:50:57 -04:00
processor_thermal.c	ACPI: Do cpufreq clamping for throttling per package v2	2012-04-13 08:14:05 -07:00
processor_throttling.c	Merge branch 'x86/urgent' into x86-mm	2011-05-02 14:16:47 +02:00
reboot.c	ACPI: Make sure the FADT is at least rev 2 before using the reset register	2011-03-22 23:52:49 -04:00
sbs.c
sbshc.c
sbshc.h
scan.c	ACPI : do not use Lid and Sleep button for S5 wakeup	2013-01-17 08:43:58 -08:00
sleep.c	ACPI / PM: Add Sony Vaio VPCCW29FX to nonvs blacklist.	2012-05-21 09:40:05 -07:00
sleep.h
sysfs.c	ACPI sysfs.c strlen fix	2012-07-16 08:47:40 -07:00
tables.c
thermal.c
utils.c
video_detect.c	ACPI / Video: Probe for output switch method when searching video devices.	2011-02-12 01:40:16 +01:00
video.c	ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000	2012-12-17 10:49:04 -08:00
wakeup.c	ACPI / Wakeup: Enable button GPEs unconditionally during initialization	2011-02-12 01:39:53 +01:00