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Jeff Mahoney 4be2c95d1f taskstats: pad taskstats netlink response for aligment issues on ia64 ... The taskstats structure is internally aligned on 8 byte boundaries but the layout of the aggregrate reply, with two NLA headers and the pid (each 4 bytes), actually force the entire structure to be unaligned. This causes the kernel to issue unaligned access warnings on some architectures like ia64. Unfortunately, some software out there doesn't properly unroll the NLA packet and assumes that the start of the taskstats structure will always be 20 bytes from the start of the netlink payload. Aligning the start of the taskstats structure breaks this software, which we don't want. So, for now the alignment only happens on architectures that require it and those users will have to update to fixed versions of those packages. Space is reserved in the packet only when needed. This ifdef should be removed in several years e.g. 2012 once we can be confident that fixed versions are installed on most systems. We add the padding before the aggregate since the aggregate is already a defined type. Commit 85893120 ("delayacct: align to 8 byte boundary on 64-bit systems") previously addressed the alignment issues by padding out the pid field. This was supposed to be a compatible change but the circumstances described above mean that it wasn't. This patch backs out that change, since it was a hack, and introduces a new NULL attribute type to provide the padding. Padding the response with 4 bytes avoids allocating an aligned taskstats structure and copying it back. Since the structure weighs in at 328 bytes, it's too big to do it on the stack. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Reported-by: Brian Rogers <brian@xyzw.org> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Guillaume Chazarain <guichaz@gmail.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-12-22 19:43:34 -08:00
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ABI	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86	2010-12-07 08:14:04 -08:00
DocBook	Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6	2010-11-25 06:58:19 +09:00
PCI	Documentation: pci.txt: fix typo	2010-07-11 22:17:45 +02:00
RCU	rcu: Add tracing data to support queueing models	2010-09-23 09:16:53 -07:00
accounting	taskstats: pad taskstats netlink response for aligment issues on ia64	2010-12-22 19:43:34 -08:00
acpi	ACPI: introduce module parameter acpi.aml_debug_output	2010-08-14 23:02:14 -04:00
aoe	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
arm	OMAP: DSS: Fix documentation regarding 'vram' kernel parameter	2010-11-10 20:51:14 +09:00
auxdisplay	…
blackfin	Blackfin: document SPI CS limitations with CPHA=0	2010-08-06 12:55:52 -04:00
block	Documentation: remove anticipatory scheduler info	2010-11-11 12:09:59 +01:00
blockdev	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cdrom	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
cgroups	cgroup: add clone_children control file	2010-10-27 18:03:09 -07:00
connector	…
console	…
cpu-freq	…
cpuidle	…
cris	…
crypto	…
development-process	Documentation/development-process: more staging info	2010-11-18 15:00:47 -08:00
device-mapper	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
driver-model	driver core: prune docs about device_interface	2010-11-10 16:57:11 -08:00
dvb	[media] lmedm04: driver for DM04/QQBOX updated to version 1.60	2010-10-22 22:22:47 -02:00
early-userspace	…
fault-injection	…
fb	fbdev: Update documentation index file.	2010-11-18 15:01:54 +09:00
filesystems	Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6	2010-12-14 08:51:12 -08:00
firmware_class	firmware: Update hotplug script	2010-08-05 13:53:34 -07:00
frv	…
hwmon	Documentation: change email address for Hans Koch	2010-11-18 15:00:46 -08:00
i2c	i2c-i801: Add PCI idents for Patsburg 'IDF' SMBus controllers	2010-10-31 21:07:00 +01:00
i2o	…
ia64	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
ide	…
infiniband	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
input	HID: ntrig: add documention	2010-08-30 15:25:18 +02:00
ioctl	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6	2010-10-28 12:13:00 -07:00
isdn	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
ja_JP	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kbuild	Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6	2010-10-28 16:18:59 -07:00
kdump	…
ko_KR	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kvm	KVM: Document that KVM_GET_SUPPORTED_CPUID may return emulated values	2010-10-24 10:52:48 +02:00
laptops	thinkpad-acpi: untangle ACPI/vendor backlight selection	2010-08-16 11:54:50 -04:00
leds	Documentation: led drivers lp5521 and lp5523	2010-11-12 07:55:32 -08:00
lguest	Merge branch 'v2.6.36-rc8' into for-2.6.37/barrier	2010-10-19 09:13:04 +02:00
m68k	…
make	…
mips	…
misc-devices	Documentation: short descriptions for bh1770glc and apds990x drivers	2010-10-26 16:52:14 -07:00
mmc	mmc: add erase, secure erase, trim and secure trim operations	2010-08-12 08:43:30 -07:00
mn10300	…
mtd	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
namespaces	…
netlabel	…
networking	tcp: restrict net.ipv4.tcp_adv_win_scale (#20312)	2010-11-28 10:39:45 -08:00
parisc	…
pcmcia	pcmcia: use autoconfiguration feature for ioports and iomem	2010-09-29 17:20:24 +02:00
power	PM / Runtime: Fix pm_runtime_suspended()	2010-12-16 17:12:25 +01:00
powerpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6	2010-10-22 20:30:48 -07:00
pps	…
prctl	…
s390	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
scheduler	…
scsi	[SCSI] megaraid_sas: Version and documentation update	2010-10-26 11:11:12 -05:00
serial	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
sh	sh: clkfwk: Kill off unused clk_set_rate_ex().	2010-11-15 18:25:12 +09:00
sound	Merge branch 'topic/hda' into for-linus	2010-10-25 10:40:05 +02:00
sparc	…
spi	spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller	2010-05-25 00:23:16 -06:00
sysctl	Restrict unprivileged access to kernel syslog	2010-11-12 07:55:32 -08:00
telephony	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
thermal	…
timers	Documentation/timers/hpet_example.c: add supporting info for hpet_example	2010-10-26 16:52:11 -07:00
trace	mm: vmscan: tracepoint: account for scanned pages similarly for both ftrace and vmstat	2010-12-22 19:43:33 -08:00
uml	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
usb	USB: teach "devices" file about Wireless and SuperSpeed USB	2010-10-22 10:21:40 -07:00
video4linux	[media] Support for Elgato Video Capture	2010-10-22 20:55:43 -02:00
vm	mm: highmem documentation	2010-10-26 16:52:08 -07:00
w1	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
watchdog	watchdog: docs: add an entry for imx2_wdt	2010-07-01 16:02:55 +00:00
wimax	…
x86	Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-22 08:54:21 -07:00
zh_CN	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
.gitignore	…
00-INDEX	mmc: add erase, secure erase, trim and secure trim operations	2010-08-12 08:43:30 -07:00
BUG-HUNTING	…
Changes	Documentation update broken web addresses	2010-07-11 21:55:42 +02:00
CodingStyle	…
DMA-API-HOWTO.txt	Documentation: DMA-API-HOWTO.txt: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN	2010-08-14 11:56:46 -07:00
DMA-API.txt	dma-mapping: remove dma_is_consistent API	2010-08-11 08:59:21 -07:00
DMA-ISA-LPC.txt	…
DMA-attributes.txt	…
HOWTO	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
IPMI.txt	…
IRQ-affinity.txt	…
IRQ.txt	…
Intel-IOMMU.txt	…
Makefile	…
ManagementStyle	…
SAK.txt	…
SELinux.txt	…
SM501.txt	…
SecurityBugs	…
Smack.txt	…
SubmitChecklist	Documentation: update SubmitChecklist for O=objdir and kconfig testing	2010-05-24 07:31:20 -07:00
SubmittingDrivers	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
SubmittingPatches	SubmittingPatches: add more about patch descriptions	2010-08-09 20:45:05 -07:00
VGA-softcursor.txt	…
apparmor.txt	AppArmor: update Maintainer and Documentation	2010-08-02 15:35:15 +10:00
applying-patches.txt	…
atomic_ops.txt	…
bad_memory.txt	…
basic_profiling.txt	…
binfmt_misc.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
braille-console.txt	…
bt8xxgpio.txt	…
btmrvl.txt	…
bus-virt-phys-mapping.txt	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
cachetlb.txt	…
circular-buffers.txt	…
coccinelle.txt	Coccinelle: Fix documentation	2010-10-28 00:32:23 +02:00
cpu-hotplug.txt	documentation: fix erroneous email address.	2010-08-11 23:04:10 +09:30
cpu-load.txt	…
cputopology.txt	topology/sysfs: Provide book id and siblings attributes	2010-09-09 20:41:25 +02:00
credentials.txt	CRED: Fix __task_cred()'s lockdep check and banner comment	2010-07-29 15:16:18 -07:00
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	…
dell_rbu.txt	…
devices.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2010-10-28 09:35:11 -07:00
dmaengine.txt	…
dontdiff	…
dynamic-debug-howto.txt	Dynamic Debug: Introduce ddebug_query= boot parameter	2010-10-22 10:16:42 -07:00
edac.txt	EDAC: Fix typos in Documentation/edac.txt	2010-11-25 17:32:47 +01:00
eisa.txt	…
email-clients.txt	…
feature-removal-schedule.txt	i2c: Mark i2c_adapter.id as deprecated	2010-11-15 22:40:38 +01:00
flexible-arrays.txt	…
futex-requeue-pi.txt	…
gcov.txt	…
gpio.txt	Documentation/gpio.txt: explain poll/select usage	2010-11-18 15:00:46 -08:00
highuid.txt	…
hw_random.txt	…
init.txt	…
initrd.txt	…
intel_txt.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
io-mapping.txt	…
io_ordering.txt	…
iostats.txt	…
irqflags-tracing.txt	…
isapnp.txt	…
java.txt	…
kernel-doc-nano-HOWTO.txt	docbook: warn on unused doc entries	2010-09-11 16:49:21 -07:00
kernel-docs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
kernel-parameters.txt	Revert "resources: support allocating space within a region from the top down"	2010-12-17 10:00:59 -08:00
keys-request-key.txt	…
keys.txt	…
kmemcheck.txt	…
kmemleak.txt	…
kobject.txt	…
kprobes.txt	kprobes: Update document about irq disabled state in kprobe handler	2010-10-14 08:55:27 +02:00
kref.txt	…
ldm.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
leds-class.txt	led-class: always implement blinking	2010-11-12 07:55:32 -08:00
leds-lp3944.txt	…
local_ops.txt	…
lockdep-design.txt	…
lockstat.txt	…
logo.gif	…
logo.txt	…
magic-number.txt	…
mca.txt	…
md.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
memory-barriers.txt	…
memory-hotplug.txt	…
memory.txt	…
mono.txt	…
mutex-design.txt	mutex: Fix annotations to include it in kernel-locking docbook	2010-09-03 08:19:51 +02:00
nmi_watchdog.txt	…
nommu-mmap.txt	…
numastat.txt	…
oops-tracing.txt	…
padata.txt	Documentation/padata.txt: fix typos etc.	2010-08-11 08:59:18 -07:00
parport-lowlevel.txt	…
parport.txt	…
pi-futex.txt	…
pnp.txt	…
preempt-locking.txt	…
printk-formats.txt	…
prio_tree.txt	…
rbtree.txt	Documentation: remove anticipatory scheduler info	2010-11-11 12:09:59 +01:00
rfkill.txt	…
robust-futex-ABI.txt	…
robust-futexes.txt	…
rt-mutex-design.txt	variable name fix to Documentation/rt-mutex-design.txt	2010-06-05 17:39:09 +02:00
rt-mutex.txt	…
rtc.txt	…
serial-console.txt	…
sgi-ioc4.txt	…
sgi-visws.txt	…
sparse.txt	update email address	2010-07-19 10:56:54 +02:00
spinlocks.txt	…
stable_api_nonsense.txt	…
stable_kernel_rules.txt	…
svga.txt	…
sysfs-rules.txt	…
sysrq.txt	documentation: update sysrq.txt magic sysrq keys	2010-10-26 17:32:41 -07:00
tomoyo.txt	TOMOYO: Update version to 2.3.0	2010-08-02 15:35:10 +10:00
unaligned-memory-access.txt	…
unicode.txt	…
unshare.txt	…
vgaarbiter.txt	…
video-output.txt	…
volatile-considered-harmful.txt	…
workqueue.txt	workqueue: add and use WQ_MEM_RECLAIM flag	2010-10-11 15:20:26 +02:00
zorro.txt	…