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87121ca504
kernel-ark/drivers
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Robert Richter 87121ca504 oprofile: Fix crash when unloading module (hr timer mode) 
Oprofile may crash in a KVM guest while unlaoding modules. This
happens if oprofile_arch_init() fails and oprofile switches to the hr
timer mode as a fallback. In this case oprofile_arch_exit() is called,
but it never was initialized properly which causes the crash. This
patch fixes this.

oprofile: using timer interrupt.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: [<ffffffff8123c226>] unregister_syscore_ops+0x41/0x58
PGD 41da3f067 PUD 41d80e067 PMD 0
Oops: 0002 [#1] PREEMPT SMP
CPU 5
Modules linked in: oprofile(-)

Pid: 2382, comm: modprobe Not tainted 3.1.0-rc7-00018-g709a39d #18 Advanced Micro Device Anaheim/Anaheim
RIP: 0010:[<ffffffff8123c226>]  [<ffffffff8123c226>] unregister_syscore_ops+0x41/0x58
RSP: 0018:ffff88041de1de98  EFLAGS: 00010296
RAX: 0000000000000000 RBX: ffffffffa00060e0 RCX: dead000000200200
RDX: 0000000000000000 RSI: dead000000100100 RDI: ffffffff8178c620
RBP: ffff88041de1dea8 R08: 0000000000000001 R09: 0000000000000082
R10: 0000000000000000 R11: ffff88041de1dde8 R12: 0000000000000080
R13: fffffffffffffff5 R14: 0000000000000001 R15: 0000000000610210
FS:  00007f9ae5bef700(0000) GS:ffff88042fd40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000008 CR3: 000000041ca44000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 2382, threadinfo ffff88041de1c000, task ffff88042db6d040)
Stack:
 ffff88041de1deb8 ffffffffa0006770 ffff88041de1deb8 ffffffffa000251e
 ffff88041de1dec8 ffffffffa00022c2 ffff88041de1ded8 ffffffffa0004993
 ffff88041de1df78 ffffffff81073115 656c69666f72706f 0000000000610200
Call Trace:
 [<ffffffffa000251e>] op_nmi_exit+0x15/0x17 [oprofile]
 [<ffffffffa00022c2>] oprofile_arch_exit+0xe/0x10 [oprofile]
 [<ffffffffa0004993>] oprofile_exit+0x13/0x15 [oprofile]
 [<ffffffff81073115>] sys_delete_module+0x1c3/0x22f
 [<ffffffff811bf09e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
 [<ffffffff8148070b>] system_call_fastpath+0x16/0x1b
Code: 20 c6 78 81 e8 c5 cc 23 00 48 8b 13 48 8b 43 08 48 be 00 01 10 00 00 00 ad de 48 b9 00 02 20 00 00 00 ad de 48 c7 c7 20 c6 78 81
 89 42 08 48 89 10 48 89 33 48 89 4b 08 e8 a6 c0 23 00 5a 5b
RIP  [<ffffffff8123c226>] unregister_syscore_ops+0x41/0x58
 RSP <ffff88041de1de98>
CR2: 0000000000000008
---[ end trace 06d4e95b6aa3b437 ]---

CC: stable@kernel.org # 2.6.37+
Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-11-04 15:04:33 +01:00
..
accessibility
acpi Merge branches 'apei', 'bz-13195' and 'doc' into acpi 2011-09-12 20:00:00 -04:00
amba
ata drivers/ata/sata_dwc_460ex.c: add missing kfree 2011-08-18 23:58:11 -04:00
atm
auxdisplay
base Merge branch 'for-linus' of git://opensource.wolfsonmicro.com/regmap 2011-09-08 16:47:52 -07:00
bcma bcma: add uevent to the bus, to autoload drivers 2011-08-22 14:21:41 -04:00
block floppy: use del_timer_sync() in init cleanup 2011-09-21 10:22:11 +02:00
bluetooth Bluetooth: add support for 2011 mac mini 2011-09-17 17:16:03 -03:00
cdrom
char drivers/char/msm_smd_pkt.c: don't use IS_ERR() 2011-08-25 16:25:33 -07:00
clk
clocksource
connector
cpufreq drivers/cpufreq/pcc-cpufreq.c: avoid NULL pointer dereference 2011-09-14 18:09:38 -07:00
cpuidle
crypto
dca
dio
dma dmaengine/ste_dma40: fix memory leak due to prepared descriptors 2011-09-05 17:08:26 +05:30
edac i7core_edac: fixed typo in error count calculation 2011-08-18 14:07:15 -07:00
eisa
firewire firewire: ohci: add no MSI quirk for O2Micro controller 2011-09-16 22:22:10 +02:00
firmware
gpio drivers/gpio/gpio-generic.c: fix build errors 2011-09-14 18:09:38 -07:00
gpu drm/radeon/kms: Make GPU/CPU page size handling consistent in blit code (v2) 2011-09-18 19:44:36 +01:00
hid Merge branch 'for-linus' of git://github.com/dtor/input 2011-09-16 14:09:19 -07:00
hwmon hwmon: (coretemp) Initialize tmin 2011-09-14 03:55:05 -07:00
hwspinlock
i2c i2c-tegra: fix possible race condition after tx 2011-09-07 00:13:40 +01:00
ide
idle
ieee802154
infiniband Merge branches 'ipoib' and 'iser' into for-next 2011-08-17 10:57:43 -07:00
input Merge branch 'for-linus' of git://github.com/dtor/input 2011-09-16 14:09:19 -07:00
iommu x86, iommu: Mark DMAR IRQ as non-threaded 2011-09-13 23:44:53 +02:00
isdn
leds drivers/leds/ledtrig-timer.c: fix broken sysfs delay handling 2011-09-14 18:09:38 -07:00
lguest
macintosh
mca
md md: Fix handling for devices from 2TB to 4TB in 0.90 metadata. 2011-09-10 17:21:28 +10:00
media [media] vp7045: fix buffer setup 2011-09-11 09:33:41 -03:00
memstick
message
mfd mfd: Fix omap-usb-host build failure 2011-09-06 16:37:59 +02:00
misc drivers/misc/pti.c: give 'comm' function scope in pti_control_frame_built_and_sent() 2011-09-14 18:09:38 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2011-09-21 13:20:21 -07:00
mtd UBI: do not link debug messages when debugging is disabled 2011-08-19 19:02:27 +03:00
net ixgbe: fix possible null buffer error 2011-09-21 02:14:13 -04:00
nfc
nubus
of
oprofile oprofile: Fix crash when unloading module (hr timer mode) 2011-11-04 15:04:33 +01:00
parisc
parport
pci pci: Don't crash when reading mpss from root complex 2011-09-13 16:08:31 -07:00
pcmcia
platform
pnp
power s3c-adc-battery: Fix compilation error due to missing header (module.h) 2011-08-19 21:01:46 +04:00
pps
ps3
ptp
rapidio rapidio: fix use of non-compatible registers 2011-08-25 16:25:34 -07:00
regulator
rtc drivers/rtc/rtc-s3c.c: fix no occurrence of alarm interrupt 2011-09-14 18:09:38 -07:00
s390 [S390] memory hotplug: only unassign assigned increments 2011-08-24 17:15:24 +02:00
sbus
scsi Merge git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6 2011-09-14 16:09:14 -07:00
sfi
sh
sn
spi
ssb
staging staging: zcache: fix cleancache crash 2011-09-20 14:17:13 -07:00
target iscsi-target: Fix sendpage breakage with proper padding+DataDigest iovec offsets 2011-09-16 23:47:07 +00:00
tc
telephony
thermal
tty cris: fix a build error in drivers/tty/serial/crisv10.c 2011-09-14 18:09:38 -07:00
uio
usb USB: xHCI: prevent infinite loop when processing MSE event 2011-09-19 17:15:47 -07:00
uwb
vhost
video backlight: Declare backlight_types[] const 2011-09-10 14:00:02 -07:00
virt
virtio
vlynq
w1 MAINTAINERS: Evgeniy has moved 2011-08-25 16:25:33 -07:00
watchdog watchdog: Initconst section fixes for watchdog 2011-09-20 14:32:00 +02:00
xen xen/irq: Alter the locking to use a mutex instead of a spinlock. 2011-09-15 04:32:02 -04:00
zorro
Kconfig
Makefile