Jeff Layton [Thu, 3 Dec 2009 13:09:41 +0000 (08:09 -0500)]
cifs: NULL out tcon, pSesInfo, and srvTcp pointers when chasing DFS referrals
commit
a2934c7b363ddcc001964f2444649f909e583bef upstream.
The scenario is this:
The kernel gets EREMOTE and starts chasing a DFS referral at mount time.
The tcon reference is put, which puts the session reference too, but
neither pointer is zeroed out.
The mount gets retried (goto try_mount_again) with new mount info.
Session setup fails fails and rc ends up being non-zero. The code then
falls through to the end and tries to put the previously freed tcon
pointer again. Oops at: cifs_put_smb_ses+0x14/0xd0
Fix this by moving the initialization of the rc variable and the tcon,
pSesInfo and srvTcp pointers below the try_mount_again label. Also, add
a FreeXid() before the goto to prevent xid "leaks".
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reported-by: Gustavo Carvalho Homem <gustavo@angulosolido.pt>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ingo Molnar [Thu, 31 Dec 2009 14:16:23 +0000 (15:16 +0100)]
dma-debug: Fix bug causing build warning
commit
a8fe9ea200ea21421ea750423d1d4d4f7ce037cf upstream.
Stephen Rothwell reported the following build warning:
lib/dma-debug.c: In function 'dma_debug_device_change':
lib/dma-debug.c:680: warning: 'return' with no value, in function returning non-void
Introduced by commit
f797d9881b62c2ddb1d2e7bd80d87141949c84aa
("dma-debug: Do not add notifier when dma debugging is disabled").
Return 0 [notify-done] when disabled. (this is standard bus notifier behavior.)
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <
20091231125624.GA14666@liondog.tnic>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Shaun Ruffell [Fri, 18 Dec 2009 00:00:36 +0000 (18:00 -0600)]
dma-debug: Do not add notifier when dma debugging is disabled.
commit
f797d9881b62c2ddb1d2e7bd80d87141949c84aa upstream.
If CONFIG_HAVE_DMA_API_DEBUG is defined and "dma_debug=off" is
specified on the kernel command line, when you detach a driver from a
device you can cause the following NULL pointer dereference:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
c0580d35>] dma_debug_device_change+0x5d/0x117
The problem is that the dma_debug_device_change notifier function is
added to the bus notifier chain even though the dma_entry_hash array
was never initialized. If dma debugging is disabled, this patch both
prevents dma_debug_device_change notifiers from being added to the
chain, and additionally ensures that the dma_debug_device_change
notifier function is a no-op.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Nicolas Ferre [Wed, 16 Dec 2009 15:28:03 +0000 (16:28 +0100)]
dma: at_hdmac: correct incompatible type for argument 1 of 'spin_lock_bh'
commit
4297a462f455e38f08976df7b16c849614a287da upstream.
Correct a typo error in locking calls.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
NeilBrown [Wed, 30 Dec 2009 01:08:49 +0000 (12:08 +1100)]
md: Fix unfortunate interaction with evms
commit
cbd1998377504df005302ac90d49db72a48552a6 upstream.
evms configures md arrays by:
open device
send ioctl
close device
for each different ioctl needed.
Since 2.6.29, the device can disappear after the 'close'
unless a significant configuration has happened to the device.
The change made by "SET_ARRAY_INFO" can too minor to stop the device
from disappearing, but important enough that losing the change is bad.
So: make sure SET_ARRAY_INFO sets mddev->ctime, and keep the device
active as long as ctime is non-zero (it gets zeroed with lots of other
things when the array is stopped).
This is suitable for -stable kernels since 2.6.29.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mike Travis [Mon, 28 Dec 2009 21:28:25 +0000 (13:28 -0800)]
x86: SGI UV: Fix writes to led registers on remote uv hubs
commit
39d30770992895d55789de64bad2349510af68d0 upstream.
The wrong address was being used to write the SCIR led regs on
remote hubs. Also, there was an inconsistency between how BIOS
and the kernel indexed these regs. Standardize on using the
lower 6 bits of the APIC ID as the index.
This patch fixes the problem of writing to an errant address to
a cpu # >= 64.
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Jack Steiner <steiner@sgi.com>
Cc: Robin Holt <holt@sgi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <
4B3922F9.
3060905@sgi.com>
[ v2: fix a number of annoying checkpatch artifacts and whitespace noise ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Julia Lawall [Sun, 13 Dec 2009 05:47:04 +0000 (05:47 +0000)]
drivers/net/usb: Correct code taking the size of a pointer
commit
6057912d7baad31be9819518674ffad349a065b1 upstream.
sizeof(dev->dev_addr) is the size of a pointer. A few lines above, the
size of this field is obtained using netdev->addr_len for a call to memcpy,
so do the same here.
A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression *x;
expression f;
type T;
@@
*f(...,(T)x,...)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 8 Dec 2009 20:54:44 +0000 (15:54 -0500)]
USB: fix bugs in usb_(de)authorize_device
commit
da307123c621b01cce147a4be313d8a754674f63 upstream.
This patch (as1315) fixes some bugs in the USB core authorization
code:
usb_deauthorize_device() should deallocate the device strings
instead of leaking them, and it should invoke
usb_destroy_configuration() (which does proper reference
counting) instead of freeing the config information directly.
usb_authorize_device() shouldn't change the device strings
until it knows that the authorization will succeed, and it should
autosuspend the device at the end (having autoresumed the
device at the start).
Because the device strings can be changed, the sysfs routines
to display the strings must protect the string pointers by
locking the device.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Acked-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 8 Dec 2009 20:50:41 +0000 (15:50 -0500)]
USB: rename usb_configure_device
commit
8d8558d10806b7e805cb80df867ebb0a453d4765 upstream.
This patch (as1314) renames usb_configure_device() and
usb_configure_device_otg() in the hub driver. Neither name is
appropriate because these routines enumerate devices, they don't
configure them. That's handled by usb_choose_configuration() and
usb_set_configuration().
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Oliver Neukum [Wed, 16 Dec 2009 18:23:43 +0000 (19:23 +0100)]
Bluetooth: Prevent ill-timed autosuspend in USB driver
commit
652fd781a52ad6e24b908cd8b83d12699754f253 upstream.
The device must be marked busy as it receives data.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Tested-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sergei Shtylyov [Tue, 15 Dec 2009 11:30:01 +0000 (13:30 +0200)]
USB: musb: gadget_ep0: avoid SetupEnd interrupt
commit
17be5c5f5ef99c94374e07f71effa78e93a20eda upstream.
Gadget stalling a zero-length SETUP request results in this error message:
SetupEnd came in a wrong ep0stage idle
In order to avoid it, always set the CSR0.DataEnd bit after detecting a zero-
length request. Add the missing '\n' to the error message itself as well...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
pancho horrillo [Wed, 23 Dec 2009 10:09:13 +0000 (11:09 +0100)]
USB: Fix a bug on appledisplay.c regarding signedness
commit
37e9066b2f85480d99d3795373f5ef0b00ac1189 upstream.
brightness status is reported by the Apple Cinema Displays as an
'unsigned char' (u8) value, but the code used 'char' instead.
Note that he driver was developed on the PowerPC architecture,
where the two types are synonymous, which is not always the case.
Fixed that. Otherwise the driver will interpret brightness
levels > 127 as negative, and fail to load.
Signed-off-by: pancho horrillo <pancho@pancho.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Donny Kurnia [Wed, 23 Dec 2009 12:03:12 +0000 (19:03 +0700)]
USB: option: support hi speed for modem Haier CE100
commit
c983202bd03eb82394ef1dce5906702fcbc7bb80 upstream.
I made this patch for usbserial driver to add the support for EVDO modem
Haier CE100. The bugs report for this is here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/490068
This patch based on these post:
http://blankblondtank.wordpress.com/2009/09/04/mengoptimalkan-koneksi-modem-haier-ce-100-cdma-di-linux/
http://tantos.web.id/blogs/how-to-internet-connection-using-cdma-evdo-modem-and-karmic-koala-ubuntu-9-10
I hope this patch can help other that have the Haier C100 modem, mostly in my country, Indonesia.
Signed-off-by: Donny Kurnia <donnykurnia@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Clemens Ladisch [Mon, 21 Dec 2009 23:36:44 +0000 (15:36 -0800)]
USB: emi62: fix crash when trying to load EMI 6|2 firmware
commit
ac06c06770bb8761b1f1f9bdf2f5420fa6d3e9fa upstream.
While converting emi62 to use request_firmware(), the driver was also
changed to use the ihex helper functions. However, this broke the loading
of the FPGA firmware because the code tries to access the addr field of
the EOF record which works with a plain array that has an empty last
record but not with the ihex helper functions where the end of the data is
signaled with a NULL record pointer, resulting in:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
f80d248c>] emi62_load_firmware+0x33c/0x740 [emi62]
This can be fixed by changing the loop condition to test the return value
of ihex_next_binrec() directly (like in emi26.c).
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reported-and-tested-by: Der Mickster <retroeffective@gmail.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dave Airlie [Sun, 20 Dec 2009 06:08:40 +0000 (16:08 +1000)]
drm/radeon: fix build on 64-bit with some compilers.
commit
794f3141a194a4f4c28c1d417b071a901f78d9bb upstream.
drivers/gpu/drm/radeon/radeon_test.c:45: undefined reference to `__udivdi3'
Reported-by: Mr. James W. Laferriere <babydr@baby-dragons.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric Millbrandt [Tue, 22 Dec 2009 15:13:24 +0000 (10:13 -0500)]
ASoC: Do not write to invalid registers on the wm9712.
commit
48e3cbb3f67a27d9c2db075f3d0f700246c40caa upstream.
This patch fixes a bug where "virtual" registers were being written to the ac97
bus. This was causing unrelated registers to become corrupted (headphone 0x04,
touchscreen 0x78, etc).
This patch duplicates protection that was included in the wm9713 driver.
Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Neil Campbell [Mon, 14 Dec 2009 04:08:57 +0000 (04:08 +0000)]
powerpc: Handle VSX alignment faults correctly in little-endian mode
commit
bb7f20b1c639606def3b91f4e4aca6daeee5d80a upstream.
This patch fixes the handling of VSX alignment faults in little-endian
mode (the current code assumes the processor is in big-endian mode).
The patch also makes the handlers clear the top 8 bytes of the register
when handling an 8 byte VSX load.
This is based on 2.6.32.
Signed-off-by: Neil Campbell <neilc@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Zhao Yakui [Tue, 15 Dec 2009 14:01:57 +0000 (22:01 +0800)]
ACPI: Use the return result of ACPI lid notifier chain correctly
commit
13c199c0d0cf78b27592991129fb8cbcfc5164de upstream.
On some laptops it will return NOTIFY_OK(non-zero) when calling the ACPI LID
notifier. Then it is used as the result of ACPI LID resume function, which
will complain the following warning message in course of suspend/resume:
>PM: Device PNP0C0D:00 failed to resume: error 1
This patch is to eliminate the above warning message.
http://bugzilla.kernel.org/show_bug.cgi?id=14782
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alexey Starikovskiy [Tue, 22 Dec 2009 07:42:52 +0000 (02:42 -0500)]
ACPI: EC: Fix MSI DMI detection
commit
55b313f249e11b815fd0be51869f166aaf368f44 upstream.
MSI strings should be ORed, not ANDed.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=14446
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Stefan Bader [Tue, 22 Dec 2009 00:20:04 +0000 (16:20 -0800)]
acerhdf: limit modalias matching to supported
commit
bdc731bc5fcd1794e9ac8ac80c389d302381c123 upstream.
BugLink: https://bugs.launchpad.net/ubuntu/+bug/435958
The module alias currently matches any Acer computer but when loaded the
BIOS checks will only succeed on Aspire One models. This causes a invalid
BIOS warning for all other models (seen on Aspire 4810T). This is not
fatal but worries users that see this message. Limiting the moule alias
to models starting with AOA or DOA for Packard Bell.
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Takashi Iwai [Thu, 17 Dec 2009 14:00:26 +0000 (15:00 +0100)]
ALSA: hda - Fix missing capsrc_nids for ALC88x
commit
035eb0cff0671ada49ba9f3e5c9e7b0cb950efea upstream.
Some model quirks missed the corresponding capsrc_nids. This resulted in
non-working capture source selection.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Clemens Ladisch [Fri, 18 Dec 2009 08:27:24 +0000 (09:27 +0100)]
sound: sgio2audio/pdaudiocf/usb-audio: initialize PCM buffer
commit
3e85fd614c7b6bb7f33bb04a0dcb5a3bfca4c0fe upstream.
When allocating the PCM buffer, use vmalloc_user() instead of vmalloc().
Otherwise, it would be possible for applications to play the previous
contents of the kernel memory to the speakers, or to read it directly if
the buffer is exported to userspace.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Guennadi Liakhovetski [Thu, 17 Dec 2009 13:51:35 +0000 (14:51 +0100)]
ASoC: wm8974: fix a wrong bit definition
commit
48c03ce72f2665f79a3fe54fc6d71b8cc3d30803 upstream.
The wm8974 datasheet defines BUFIOEN as bit 2.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bartlomiej Zolnierkiewicz [Sun, 20 Dec 2009 18:22:33 +0000 (19:22 +0100)]
pata_cmd64x: fix overclocking of UDMA0-2 modes
commit
509426bd46ad0903dca409803e0ee3d30f99f1e8 upstream.
adev->dma_mode stores the transfer mode value not UDMA mode number
so the condition in cmd64x_set_dmamode() is always true and the higher
UDMA clock is always selected. This can potentially result in data
corruption when UDMA33 device is used, when 40-wire cable is used or
when the error recovery code decides to lower the device speed down.
The issue was introduced in the commit
6a40da0 ("libata cmd64x: whack
into a shape that looks like the documentation") which goes back to
kernel 2.6.20.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sergei Shtylyov [Thu, 17 Dec 2009 06:11:27 +0000 (01:11 -0500)]
pata_hpt3x2n: fix clock turnaround
commit
256ace9bbd4cdb6d48d5f55d55d42fa20527fad1 upstream.
The clock turnaround code still doesn't work for several reasons:
- 'USE_DPLL' flag in 'ap->host->private_data' is never initialized
or updated, so the driver can only set the chip to the DPLL clock
mode, not the PCI mode;
- the driver doesn't serialize access to the channels depending on
the current clock mode like the vendor drivers, so the clock
turnaround is only executed "optionally", not always as it should be;
- the wrong ports are written to when hpt3x2n_set_clock() is called
for the secondary channel;
- hpt3x2n_set_clock() can inadvertently enable the disabled channels
when resetting the channel state machines.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Thomas Gleixner [Thu, 10 Dec 2009 14:35:10 +0000 (15:35 +0100)]
clockevents: Prevent clockevent_devices list corruption on cpu hotplug
commit
bb6eddf7676e1c1f3e637aa93c5224488d99036f upstream.
Xiaotian Feng triggered a list corruption in the clock events list on
CPU hotplug and debugged the root cause.
If a CPU registers more than one per cpu clock event device, then only
the active clock event device is removed on CPU_DEAD. The unused
devices are kept in the clock events device list.
On CPU up the clock event devices are registered again, which means
that we list_add an already enqueued list_head. That results in list
corruption.
Resolve this by removing all devices which are associated to the dead
CPU on CPU_DEAD.
Reported-by: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Peter Zijlstra [Wed, 16 Dec 2009 17:04:34 +0000 (18:04 +0100)]
sched: Select_task_rq_fair() must honour SD_LOAD_BALANCE
commit
e4f4288842ee12747e10c354d72be7d424c0b627 upstream.
We should skip !SD_LOAD_BALANCE domains.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <
20091216170517.
653578430@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Suresh Siddha [Thu, 17 Dec 2009 00:25:42 +0000 (16:25 -0800)]
x86, cpuid: Add "volatile" to asm in native_cpuid()
commit
45a94d7cd45ed991914011919e7d40eb6d2546d1 upstream.
xsave_cntxt_init() does something like:
cpuid(0xd, ..); // find out what features FP/SSE/.. etc are supported
xsetbv(); // enable the features known to OS
cpuid(0xd, ..); // find out the size of the context for features enabled
Depending on what features get enabled in xsetbv(), value of the
cpuid.eax=0xd.ecx=0.ebx changes correspondingly (representing the
size of the context that is enabled).
As we don't have volatile keyword for native_cpuid(), gcc 4.1.2
optimizes away the second cpuid and the kernel continues to use
the cpuid information obtained before xsetbv(), ultimately leading to kernel
crash on processors supporting more state than the legacy FP/SSE.
Add "volatile" for native_cpuid().
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <
1261009542.2745.55.camel@sbs-t61.sc.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Peter Zijlstra [Wed, 16 Dec 2009 17:04:33 +0000 (18:04 +0100)]
sched: Fix task_hot() test order
commit
e6c8fba7771563b2f3dfb96a78f36ec17e15bdf0 upstream.
Make sure not to access sched_fair fields before verifying it is
indeed a sched_fair task.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <
20091216170517.
577998058@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mike Christie [Wed, 18 Nov 2009 03:25:16 +0000 (21:25 -0600)]
SCSI: fc class: fix fc_transport_init error handling
commit
48de68a40aef032a2e198437f4781a83bfb938db upstream.
If transport_class_register fails we should unregister any
registered classes, or we will leak memory or other
resources.
I did a quick modprobe of scsi_transport_fc to test the
patch.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
FUJITA Tomonori [Thu, 26 Nov 2009 00:24:13 +0000 (09:24 +0900)]
SCSI: st: fix mdata->page_order handling
commit
c982c368bb90adbd312faa05d0cfd842e9ab45a7 upstream.
dio transfer always resets mdata->page_order to zero. It breaks
high-order pages previously allocated for non-dio transfer.
This patches adds reserved_page_order to st_buffer structure to save
page order for non-dio transfer.
http://bugzilla.kernel.org/show_bug.cgi?id=14563
When enlarge_buffer() allocates 524288 from 0, st uses six-order page
allocation. So mdata->page_order is 6 and frp_seg is 2.
After that, if st uses dio, sgl_map_user_pages() sets
mdata->page_order to 0 for st_do_scsi(). After that, when we call
normalize_buffer(), it frees only free frp_seg * PAGE_SIZE (2 * 4096)
though we should free frp_seg * PAGE_SIZE << 6 (2 * 4096 << 6). So we
see buffer_size is set to 516096 (524288 - 8192).
Reported-by: Joachim Breuer <linux-kernel@jmbreuer.net>
Tested-by: Joachim Breuer <linux-kernel@jmbreuer.net>
Acked-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Michael Reed [Wed, 2 Dec 2009 15:11:16 +0000 (09:11 -0600)]
SCSI: qla2xxx: dpc thread can execute before scsi host has been added
commit
1486400f7edd009d49550da968d5744e246dc7f8 upstream.
Fix crash in qla2x00_fdmi_register() due to the dpc
thread executing before the scsi host has been fully
added.
Unable to handle kernel NULL pointer dereference (address
00000000000001d0)
qla2xxx_7_dpc[4140]: Oops
8813272891392 [1]
Call Trace:
[<
a000000100016910>] show_stack+0x50/0xa0
sp=
e00000b07c59f930 bsp=
e00000b07c591400
[<
a000000100017180>] show_regs+0x820/0x860
sp=
e00000b07c59fb00 bsp=
e00000b07c5913a0
[<
a00000010003bd60>] die+0x1a0/0x2e0
sp=
e00000b07c59fb00 bsp=
e00000b07c591360
[<
a0000001000681a0>] ia64_do_page_fault+0x8c0/0x9e0
sp=
e00000b07c59fb00 bsp=
e00000b07c591310
[<
a00000010000c8e0>] ia64_native_leave_kernel+0x0/0x270
sp=
e00000b07c59fb90 bsp=
e00000b07c591310
[<
a000000207197350>] qla2x00_fdmi_register+0x850/0xbe0 [qla2xxx]
sp=
e00000b07c59fd60 bsp=
e00000b07c591290
[<
a000000207171570>] qla2x00_configure_loop+0x1930/0x34c0 [qla2xxx]
sp=
e00000b07c59fd60 bsp=
e00000b07c591128
[<
a0000002071732b0>] qla2x00_loop_resync+0x1b0/0x2e0 [qla2xxx]
sp=
e00000b07c59fdf0 bsp=
e00000b07c5910c0
[<
a000000207166d40>] qla2x00_do_dpc+0x9a0/0xce0 [qla2xxx]
sp=
e00000b07c59fdf0 bsp=
e00000b07c590fa0
[<
a0000001000d5bb0>] kthread+0x110/0x140
sp=
e00000b07c59fe00 bsp=
e00000b07c590f68
[<
a000000100014a30>] kernel_thread_helper+0xd0/0x100
sp=
e00000b07c59fe30 bsp=
e00000b07c590f40
[<
a00000010000a4c0>] start_kernel_thread+0x20/0x40
sp=
e00000b07c59fe30 bsp=
e00000b07c590f40
crash> dis
a000000207197350
0xa000000207197350 <qla2x00_fdmi_register+2128>: [MMI] ld1 r45=[r14];;
crash> scsi_qla_host.host 0xe00000b058c73ff8
host = 0xe00000b058c73be0,
crash> Scsi_Host.shost_data 0xe00000b058c73be0
shost_data = 0x0, <<<<<<<<<<<
The fc_transport fc_* workqueue threads have yet to be created.
crash> ps | grep _7
3891 2 2
e00000b075c80000 IN 0.0 0 0 [scsi_eh_7]
4140 2 3
e00000b07c590000 RU 0.0 0 0 [qla2xxx_7_dpc]
The thread creating adding the Scsi_Host is blocked due to other
activity in sysfs.
crash> bt 3762
PID: 3762 TASK:
e00000b071e70000 CPU: 3 COMMAND: "modprobe"
#0 [BSP:
e00000b071e71548] schedule at
a000000100727e00
#1 [BSP:
e00000b071e714c8] __mutex_lock_slowpath at
a0000001007295a0
#2 [BSP:
e00000b071e714a8] mutex_lock at
a000000100729830
#3 [BSP:
e00000b071e71478] sysfs_addrm_start at
a0000001002584f0
#4 [BSP:
e00000b071e71440] create_dir at
a000000100259350
#5 [BSP:
e00000b071e71410] sysfs_create_subdir at
a000000100259510
#6 [BSP:
e00000b071e713b0] internal_create_group at
a00000010025c880
#7 [BSP:
e00000b071e71388] sysfs_create_group at
a00000010025cc50
#8 [BSP:
e00000b071e71368] dpm_sysfs_add at
a000000100425050
#9 [BSP:
e00000b071e71310] device_add at
a000000100417d90
#10 [BSP:
e00000b071e712d8] scsi_add_host at
a00000010045a380
#11 [BSP:
e00000b071e71268] qla2x00_probe_one at
a0000002071be950
#12 [BSP:
e00000b071e71248] local_pci_probe at
a00000010032e490
#13 [BSP:
e00000b071e71218] pci_device_probe at
a00000010032ecd0
#14 [BSP:
e00000b071e711d8] driver_probe_device at
a00000010041d480
#15 [BSP:
e00000b071e711a8] __driver_attach at
a00000010041d6e0
#16 [BSP:
e00000b071e71170] bus_for_each_dev at
a00000010041c240
#17 [BSP:
e00000b071e71150] driver_attach at
a00000010041d0a0
#18 [BSP:
e00000b071e71108] bus_add_driver at
a00000010041b080
#19 [BSP:
e00000b071e710c0] driver_register at
a00000010041dea0
#20 [BSP:
e00000b071e71088] __pci_register_driver at
a00000010032f610
#21 [BSP:
e00000b071e71058] (unknown) at
a000000207200270
#22 [BSP:
e00000b071e71018] do_one_initcall at
a00000010000a9c0
#23 [BSP:
e00000b071e70f98] sys_init_module at
a0000001000fef00
#24 [BSP:
e00000b071e70f98] ia64_ret_from_syscall at
a00000010000c740
So, it appears that qla2xxx dpc thread is moving forward before the
scsi host has been completely added.
This patch moves the setting of the init_done (and online) flag to
after the call to scsi_add_host() to hold off the dpc thread.
Found via large lun count testing using 2.6.31.
Signed-off-by: Michael Reed <mdr@sgi.com>
Acked-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kleber Sacilotto de Souza [Wed, 25 Nov 2009 22:13:43 +0000 (20:13 -0200)]
SCSI: ipr: fix EEH recovery
commit
99c965dd9ee1a004efc083c3d760ba982bb76adf upstream.
After commits
c82f63e411f1b58427c103bd95af2863b1c96dd1 (PCI: check saved
state before restore) and
4b77b0a2ba27d64f58f16d8d4d48d8319dda36ff (PCI:
Clear saved_state after the state has been restored) PCI drivers are
prevented from restoring the device standard configuration registers
twice in a row. These changes introduced a regression on ipr EEH
recovery.
The ipr device driver saves the PCI state only during the device probe
and restores it on ipr_reset_restore_cfg_space() during IOA resets. This
behavior is causing the EEH recovery to fail after the second error
detected, since the registers are not being restored.
One possible solution would be saving the registers after restoring
them. The problem with this approach is that while recovering from an
EEH error if pci_save_state() results in an EEH error, the adapter/slot
will be reset, and end up back in ipr_reset_restore_cfg_space(), but it
won't have a valid saved state to restore, so pci_restore_state() will
fail.
The following patch introduces a workaround for this problem, hacking
around the PCI API by setting pdev->state_saved = true before we do the
restore. It fixes the EEH regression and prevents that we hit another
EEH error during EEH recovery.
[jejb: fix is a hack ... Jesse and Rafael will fix properly]
Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Fri, 18 Dec 2009 22:27:07 +0000 (14:27 -0800)]
Linux 2.6.32.2
Luck, Tony [Mon, 14 Dec 2009 20:00:36 +0000 (20:00 +0000)]
implement early_io{re,un}map for ia64
commit
cd7bcf32d42b15891620b3f1387a00178b54291a upstream.
Needed for commit
2c992208 ("intel-iommu: Detect DMAR in hyperspace at
probe time.) to build on IA64.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Paul Mackerras [Tue, 15 Dec 2009 08:40:32 +0000 (19:40 +1100)]
perf_event: Fix incorrect range check on cpu number
commit
0f624e7e5625f4c30c836b7a5decfe2553582391 upstream.
It is quite legitimate for CPUs to be numbered sparsely, meaning
that it possible for an online CPU to have a number which is
greater than the total count of possible CPUs.
Currently find_get_context() has a sanity check on the cpu
number where it checks it against num_possible_cpus(). This
test can fail for a legitimate cpu number if the
cpu_possible_mask is sparsely populated.
This fixes the problem by checking the CPU number against
nr_cpumask_bits instead, since that is the appropriate check to
ensure that the cpu number is same to pass to cpu_isset()
subsequently.
Reported-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Tested-by: Michael Neuling <mikey@neuling.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20091215084032.GA18661@brick.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jan Engelhardt [Mon, 14 Dec 2009 13:52:10 +0000 (14:52 +0100)]
netfilter: xtables: document minimal required version
commit
7a92263705435d046d37a0990d0edfcb517f7ad3 upstream.
For both .33 and .32-stable.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Chris Wright [Wed, 2 Dec 2009 20:06:34 +0000 (12:06 -0800)]
intel-iommu: ignore page table validation in pass through mode
commit
1672af1164d3d50ba8908014fd34cc0b58afdc1e upstream.
We are seeing a bug when booting w/ iommu=pt with current upstream
(bisect blames
19943b0e30b05d42e494ae6fef78156ebc8c637e "intel-iommu:
Unify hardware and software passthrough support).
The issue is specific to this loop during identity map initialization
of each device:
domain_context_mapping_one(si_domain, ..., CONTEXT_TT_PASS_THROUGH)
...
/* Skip top levels of page tables for
* iommu which has less agaw than default.
*/
for (agaw = domain->agaw; agaw != iommu->agaw; agaw--) {
pgd = phys_to_virt(dma_pte_addr(pgd));
if (!dma_pte_present(pgd)) { <------ failing here
spin_unlock_irqrestore(&iommu->lock, flags);
return -ENOMEM;
}
This box has 2 iommu's in it. The catchall iommu has MGAW == 48, and
SAGAW == 4. The other iommu has MGAW == 39, SAGAW == 2.
The device that's failing the above pgd test is the only device connected
to the non-catchall iommu, which has a smaller address width than the
domain default. This test is not necessary since the context is in PT
mode and the ASR is ignored.
Thanks to Don Dutile for discovering and debugging this one.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Woodhouse [Wed, 2 Dec 2009 10:18:30 +0000 (10:18 +0000)]
intel-iommu: Fix oops with intel_iommu=igfx_off
commit
44cd613c0e4cd93079ea2a93aa06649d8ca0830a upstream.
The hotplug notifier will call find_domain() to see if the device in
question has been assigned an IOMMU domain. However, this should never
be called for devices with a "dummy" domain, such as graphics devices
when intel_iommu=igfx_off is set and the corresponding IOMMU isn't even
initialised. If you do that, it'll oops as it dereferences the (-1)
pointer.
The notifier function should check iommu_no_mapping() for the
device before doing anything else.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Woodhouse [Wed, 2 Dec 2009 09:21:55 +0000 (09:21 +0000)]
intel-iommu: Check for an RMRR which ends before it starts.
commit
5595b528b49a702c0428c0762bab60999648254c upstream.
Some HP BIOSes report an RMRR region (a region which needs a 1:1 mapping
in the IOMMU for a given device) which has an end address lower than its
start address. Detect that and warn, rather than triggering the
BUG() in dma_pte_clear_range().
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Woodhouse [Wed, 2 Dec 2009 09:20:27 +0000 (09:20 +0000)]
intel-iommu: Apply BIOS sanity checks for interrupt remapping too.
commit
6ecbf01c7ce4c0f4c3bdfa0e64ac6258328fda6c upstream.
The BIOS errors where an IOMMU is reported either at zero or a bogus
address are causing problems even when the IOMMU is disabled -- because
interrupt remapping uses the same hardware. Ensure that the checks get
applied for the interrupt remapping initialisation too.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Chris Wright [Wed, 2 Dec 2009 09:17:13 +0000 (09:17 +0000)]
intel-iommu: Detect DMAR in hyperspace at probe time.
commit
2c99220810c1c79322034628b993573b088ff2da upstream.
Many BIOSes will lie to us about the existence of an IOMMU, and claim
that there is one at an address which actually returns all 0xFF.
We need to detect this early, so that we know we don't have a viable
IOMMU and can set up swiotlb before it's too late.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Woodhouse [Wed, 16 Dec 2009 03:27:20 +0000 (03:27 +0000)]
jffs2: Fix long-standing bug with symlink garbage collection.
commit
2e16cfca6e17ae37ae21feca080a6f2eca9087dc upstream.
Ever since jffs2_garbage_collect_metadata() was first half-written in
February 2001, it's been broken on architectures where 'char' is signed.
When garbage collecting a symlink with target length above 127, the payload
length would end up negative, causing interesting and bad things to happen.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Simon Horman [Tue, 15 Dec 2009 16:01:25 +0000 (17:01 +0100)]
ipvs: zero usvc and udest
commit
258c889362aa95d0ab534b38ce8c15d3009705b1 upstream.
Make sure that any otherwise uninitialised fields of usvc are zero.
This has been obvserved to cause a problem whereby the port of
fwmark services may end up as a non-zero value which causes
scheduling of a destination server to fail for persisitent services.
As observed by Deon van der Merwe <dvdm@truteq.co.za>.
This fix suggested by Julian Anastasov <ja@ssi.bg>.
For good measure also zero udest.
Cc: Deon van der Merwe <dvdm@truteq.co.za>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Hugh Dickins [Tue, 15 Dec 2009 01:59:04 +0000 (17:59 -0800)]
mm: sigbus instead of abusing oom
commit
d99be1a8ecf377c2c9b3372d36411ad6547bbd4c upstream.
When do_nonlinear_fault() realizes that the page table must have been
corrupted for it to have been called, it does print_bad_pte() and returns
... VM_FAULT_OOM, which is hard to understand.
It made some sense when I did it for 2.6.15, when do_page_fault() just
killed the current process; but nowadays it lets the OOM killer decide who
to kill - so page table corruption in one process would be liable to kill
another.
Change it to return VM_FAULT_SIGBUS instead: that doesn't guarantee that
the process will be killed, but is good enough for such a rare
abnormality, accompanied as it is by the "BUG: Bad page map" message.
And recent HWPOISON work has copied that code into do_swap_page(), when it
finds an impossible swap entry: fix that to VM_FAULT_SIGBUS too.
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Izik Eidus <ieidus@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Nick Piggin <npiggin@suse.de>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Zhenyu Wang [Wed, 25 Nov 2009 05:09:38 +0000 (13:09 +0800)]
drm/i915: Fix LVDS stability issue on Ironlake
commit
1b3c7a47f993bf9ab6c4c7cc3bbf5588052b58f4 upstream.
In disable sequence, all output ports on PCH have to be disabled
before PCH transcoder, but LVDS port was left always enabled. This
one fixes that by disable LVDS port properly during pipe disable
process, and resolved stability issue seen on Ironlake. Also move
panel fitting disable time just after pipe disable to align with
the spec.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Zhenyu Wang [Fri, 27 Nov 2009 03:44:36 +0000 (11:44 +0800)]
drm/i915: PineView only has LVDS and CRT ports
commit
103a196f4224dc6872081305cf7f82ebf67aa7bd upstream.
PineView only has 2 ports for LVDS and CRT. Don't enable other
ports for it.
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Chris Wilson [Fri, 27 Nov 2009 13:06:56 +0000 (13:06 +0000)]
drm/i915: Avoid NULL dereference with component_only tv_modes
commit
d271817baecbccb47da0d9f28c285a0dae8a06b7 upstream.
In commit
d2d9f2324, the guard for a valid video mode was removed. This
caused the regression:
kernel crash during kms graphic boot on Intel GM4500 platform
https://bugzilla.redhat.com/show_bug.cgi?id=540218
This patches changes the logic slightly not to rely on a coupled
variable, but to just check whether the video_modes is valid before
dereferencing.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Zhenyu Wang <zhenyu.z.wang@intel.com>
[ickle: Actually reference the correct bug report]
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Yong Wang [Wed, 16 Dec 2009 04:58:46 +0000 (12:58 +0800)]
x86: Under BIOS control, restore AP's APIC_LVTTHMR to the BSP value
Upstream commit
a2202aa29289db64ca7988b12343158b67b27f10.
On platforms where bios handles the thermal monitor interrupt,
APIC_LVTTHMR on each logical CPU is programmed to generate a SMI and OS
can't touch it.
Unfortunately AP bringup sequence using INIT-SIPI-SIPI clear all
the LVT entries except the mask bit. Essentially this results in
all LVT entries including the thermal monitoring interrupt set to masked
(clearing the bios programmed value for APIC_LVTTHMR).
And this leads to kernel take over the thermal monitoring interrupt
on AP's but not on BSP (leaving the bios programmed value only on BSP).
As a result of this, we have seen system hangs when the thermal
monitoring interrupt is generated.
Fix this by reading the initial value of thermal LVT entry on BSP
and if bios has taken over the control, then program the same value
on all AP's and leave the thermal monitoring interrupt control
on all the logical cpu's to the bios.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Reviewed-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Arjan van de Ven <arjan@infradead.org>
LKML-Reference: <
20091110013824.GA24940@ywang-moblin2.bj.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Florian Fainelli [Tue, 15 Dec 2009 06:45:06 +0000 (06:45 +0000)]
bcm63xx_enet: fix compilation failure after get_stats_count removal
commit
a3f92eea04101d9a8e14d50f8048cc5b7bca07a8 upstream.
This patch converts bcm63xx_enet to uset get_sset_count
like the other drivers do.
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Rafal Milecki [Fri, 2 Oct 2009 06:54:44 +0000 (03:54 -0300)]
V4L/DVB (13116): gspca - ov519: Webcam 041e:4067 added.
commit
518c8df77c21b7d1690dd8b96eb0e54c4ec1c9c1 upstream.
Signed-off-by: Rafal Milecki <zajec5@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Surbhi Palande <surbhi.palande@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jan Kara [Tue, 1 Dec 2009 15:53:06 +0000 (16:53 +0100)]
ext3: Fix data / filesystem corruption when write fails to copy data
commit
68eb3db08344286733adac48304d9fb7a0e53b27 upstream.
When ext3_write_begin fails after allocating some blocks or
generic_perform_write fails to copy data to write, we truncate blocks already
instantiated beyond i_size. Although these blocks were never inside i_size, we
have to truncate pagecache of these blocks so that corresponding buffers get
unmapped. Otherwise subsequent __block_prepare_write (called because we are
retrying the write) will find the buffers mapped, not call ->get_block, and
thus the page will be backed by already freed blocks leading to filesystem and
data corruption.
Reported-by: James Y Knight <foom@fuhm.net>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Eric W. Biederman [Mon, 14 Dec 2009 06:39:28 +0000 (22:39 -0800)]
net: Fix userspace RTM_NEWLINK notifications.
commit
d90a909e1f3e006a1d57fe11fd417173b6494701 upstream.
I received some bug reports about userspace programs having problems
because after RTM_NEWLINK was received they could not immeidate
access files under /proc/sys/net/ because they had not been
registered yet.
The problem was trivailly fixed by moving the userspace
notification from rtnetlink_event to the end of register_netdevice.
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Zhao Yakui [Fri, 11 Dec 2009 07:17:20 +0000 (15:17 +0800)]
ACPI: Use the ARB_DISABLE for the CPU which model id is less than 0x0f.
commit
03a05ed1152944000151d57b71000de287a1eb02 upstream.
Currently, ARB_DISABLE is a NOP on all of the recent Intel platforms.
For such platforms, reduce contention on c3_lock by skipping the fake
ARB_DISABLE.
The cpu model id on one laptop is 14. If we disable ARB_DISABLE on this box,
the box can't be booted correctly. But if we still enable ARB_DISABLE on this
box, the box can be booted correctly.
So we still use the ARB_DISABLE for the cpu which mode id is less than 0x0f.
http://bugzilla.kernel.org/show_bug.cgi?id=14700
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Tejun Heo [Wed, 9 Dec 2009 23:43:16 +0000 (08:43 +0900)]
vmalloc: conditionalize build of pcpu_get_vm_areas()
No matching upstream commit as it was resolved differently there.
pcpu_get_vm_areas() is used only when dynamic percpu allocator is used
by the architecture. In 2.6.32, ia64 doesn't use dynamic percpu
allocator and has a macro which makes pcpu_get_vm_areas() buggy via
local/global variable aliasing and triggers compile warning.
The problem is fixed in upstream and ia64 uses dynamic percpu
allocators, so the only left issue is inclusion of unnecessary code
and compile warning on ia64 on 2.6.32.
Don't build pcpu_get_vm_areas() if legacy percpu allocator is in use.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jan Beulich <JBeulich@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Corentin Chary [Mon, 7 Dec 2009 21:05:50 +0000 (22:05 +0100)]
asus-laptop: change light sens default values.
commit
d951d4cc84e8b5ddb8e0ab81cf6a72cc73fdd668 upstream.
The light sensor disable brightness key and
/sys/class/backlight/ control. There was a lot of report
from users who didn't understand why they couldn't change their
brightness, including:
https://bugs.launchpad.net/bugs/222171
https://bugzilla.novell.com/show_bug.cgi?id=514747
http://bugzilla.kernel.org/show_bug.cgi?id=13671
http://bugzilla.kernel.org/show_bug.cgi?id=14432
Now the light sensor is disabled, and if the user want to enable
it, the level should be ok.
The funny thing is that comments where ok, not code.
Cc: stable@kernel.org
Cc: Thomas Renninger <trenn@suse.de>
Cc: Peter Küppers <peter-mailbox@web.de>
Cc: Michael Franzl <michaelfranzl@gmx.at>
Cc: Ian Turner <vectro@vectro.org>
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Peter Feuerer [Tue, 17 Nov 2009 22:27:37 +0000 (14:27 -0800)]
acerhdf: add new BIOS versions
commit
360657463679dee44f0b167ffa61f563b4fee101 upstream.
Added new BIOS versions for following netbooks: Acer 1410, Gateway LT31,
Packard Bell DOA150. As the Gateway LT31 machines have different register
values for setting and checking the off-state, the "cmd_off" variable has
been splitted up to "cmd_off" and "chk_off".
Signed-off-by: Peter Feuerer <peter@piie.net>
Cc: Borislav Petkov <petkovbb@gmail.com>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Wed, 16 Dec 2009 00:46:40 +0000 (16:46 -0800)]
matroxfb: fix problems with display stability
commit
8c651311a3a08c1e4815de6933e00a760e498dae upstream.
Regression caused in 2.6.23 and then despite repeated requests never fixed
or dealt with (Petr promised to sort it in 2008 but seems to have
forgotten).
Enough is enough - remove the problem line that was added. If it upsets
someone they've had two years to deal with it and at the very least it'll
rattle their cage and wake them up.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=9709
Signed-off-by: Alan Cox <alan@linux.intel.com>
Reported-by: Damon <account@bugzilla.kernel.org.juxtaposition.net>
Tested-by: Ruud van Melick <rvm1974@raketnet.nl>
Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Paul A. Clarke <pc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Zhu Yi [Wed, 2 Dec 2009 06:24:37 +0000 (14:24 +0800)]
ipw2100: fix rebooting hang with driver loaded
commit
52ce3e9a7db754b78cf2cbabc87013f921b25b28 upstream.
Add PCI .shutdown method so that we can disable the device during
shutdown or reboot. Without this, the reboot doesn't work well on
some platforms.
This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2124
Tested-by: pablo <pablolm2005@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Henrique de Moraes Holschuh [Wed, 9 Dec 2009 01:36:22 +0000 (01:36 +0000)]
thinkpad-acpi: preserve rfkill state across suspend/resume
commit
208b996b6c460285650d39b2330f8ef82c007d10 upstream.
Since the rfkill rework in 2.6.31, the driver is always resuming with
the radios disabled.
Change thinkpad-acpi to ask the firmware to resume with the radios in
the last state. This fixes the Bluetooth and WWAN rfkill switches.
Note that it means we respect the firmware's oddities. Should the
user toggle the hardware rfkill switch on and off, it might cause the
radios to resume enabled.
UWB is an unknown quantity since it has nowhere the same level of
firmware support (no control over state storage in NVRAM, for
example), and might need further fixing. Testers welcome.
This change fixes a regression from 2.6.30.
Reported-by: Jerone Young <jerone.young@canonical.com>
Reported-by: Ian Molton <ian.molton@collabora.co.uk>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Tested-by: Ian Molton <ian.molton@collabora.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Henrique de Moraes Holschuh [Wed, 9 Dec 2009 01:36:21 +0000 (01:36 +0000)]
thinkpad-acpi: fix default brightness_mode for R50e/R51
commit
a9f8eacca4e9e8693de9b896c1fa7aadaa9402e8 upstream.
According to a report, the R50e wants EC-based brightness control,
even if it uses an Intel GPU. The current driver default was reported
to not work at all.
This bug can be worked around by the "brightness_mode=3" module
parameter.
Change the default of the R50e and R51 2xxx models (which use the same
EC firmware, 1V) to TPACPI_BRGHT_Q_EC, but keep TPACPI_BRGHT_Q_ASK set
for now, as I'd like to get more reports.
This fixes a regression caused by commit
59fe4fe34d7afdf63208124f313be9056feaa2f4,
"thinkpad-acpi: fix incorrect use of TPACPI_BRGHT_MODE_ECNVRAM"
Kernel 2.6.31 also needs this fix.
Reported-by: Ferenc Wagner <wferi@niif.hu>
Tested-by: Ferenc Wagner <wferi@niif.hu>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: stable@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kirill A. Shutemov [Wed, 16 Dec 2009 00:47:01 +0000 (16:47 -0800)]
memcg: fix memory.memsw.usage_in_bytes for root cgroup
commit
cd9b45b78a61e8df250e69385c74e729e5b66abf upstream.
A memory cgroup has a memory.memsw.usage_in_bytes file. It shows the sum
of the usage of pages and swapents in the cgroup. Presently the root
cgroup's memsw.usage_in_bytes shows the wrong value - the number of
swapents are not added.
So take MEM_CGROUP_STAT_SWAPOUT into account.
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Li Peng [Wed, 16 Dec 2009 15:33:25 +0000 (16:33 +0100)]
drm/i915: Fix sync to vblank when VGA output is turned off
commit
778c902640530371a169ad1c03566e7c51b09874 upstream
In current vblank-wait implementation, if we turn off VGA output,
drm_wait_vblank will still wait on the disabled pipe until timeout,
because vblank on the pipe is assumed be enabled. This would cause
slow system response on some system such as moblin.
This patch resolve the issue by adding a drm helper function
drm_vblank_off which explicitly clear vblank_enabled[crtc], wake up
any waiting queue and save last vblank counter before turning off
crtc. It also slightly change drm_vblank_get to ensure that we will
will return immediately if trying to wait on a disabled pipe.
Signed-off-by: Li Peng <peng.li@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[anholt: hand-applied for conflicts with overlay changes]
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Vivek Natarajan [Wed, 16 Dec 2009 16:51:45 +0000 (11:51 -0500)]
mac80211: Fix dynamic power save for scanning.
Upstream commit:
7c3f4bbedc241ddcd3abe1f419c356e625231da1
Not only ps_sdata but also IEEE80211_CONF_PS is to be considered
before restoring PS in scan_ps_disable(). For instance, when ps_sdata
is set but CONF_PS is not set just because the dynamic timer is still
running, a sw scan leads to setting of CONF_PS in scan_ps_disable
instead of restarting the dynamic PS timer.
Also for the above case, a null data frame is to be sent after
returning to operating channel which was not happening with the
current implementation. This patch fixes this too.
Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Reviewed-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Felix Fietkau [Wed, 16 Dec 2009 16:51:44 +0000 (11:51 -0500)]
ath9k: fix tx status reporting
This is a backport of upstream commit:
e8c6342d989e241513baeba4b05a04b6b1f3bc8b
This patch fixes a bug in ath9k's tx status check, which
caused mac80211 to consider regularly transmitted unicast frames
as un-acked.
When checking the ts_status field for errors, it needs to be masked
with ATH9K_TXERR_FILT, because this field also contains other fields
like ATH9K_TX_ACKED.
Without this patch, AP mode is pretty much unusable, as hostapd
checks the ACK status for the frames that it injects.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Luis R. Rodriguez [Wed, 16 Dec 2009 16:51:43 +0000 (11:51 -0500)]
ath9k: Fix maximum tx fifo settings for single stream devices
This is a backport of upstream commit:
f4709fdf683e1ed37b321c258b614ebe39752bf3
Atheros single stream AR9285 and AR9271 have half the PCU TX FIFO
buffer size of that of dual stream devices. Dual stream devices
have a max PCU TX FIFO size of 8 KB while single stream devices
have 4 KB. Single stream devices have an issue though and require
hardware only to use half of the amount of its capable PCU TX FIFO
size, 2 KB and this requires a change in software.
Technically a change would not have been required (except for frame
burst considerations of 128 bytes) if these devices would have been
able to use the full 4 KB of the PCU TX FIFO size but our systems
engineers recommend 2 KB to be used only. We enforce this through
software by reducing the max frame triggger level to 2 KB.
Fixing the max frame trigger level should then have a few benefits:
* The PER will now be adjusted as designed for underruns when the
max trigger level is reached. This should help alleviate the
bus as the rate control algorithm chooses a slower rate which
should ensure frames are transmitted properly under high system
bus load.
* The poll we use on our TX queues should now trigger and work
as designed for single stream devices. The hardware passes
data from each TX queue on the PCU TX FIFO queue respecting each
queue's priority. The new trigger level ensures this seeding of
the PCU TX FIFO queue occurs as designed which could mean avoiding
false resets and actually reseting hw correctly when a TX queue
is indeed stuck.
* Some undocumented / unsupported behaviour could have been triggered
when the max trigger level level was being set to 4 KB on single
stream devices. Its not clear what this issue was to me yet.
Cc: Kyungwan Nam <kyungwan.nam@atheros.com>
Cc: Bennyam Malavazi <bennyam.malavazi@atheros.com>
Cc: Stephen Chen <stephen.chen@atheros.com>
Cc: Shan Palanisamy <shan.palanisamy@atheros.com>
Cc: Paul Shaw <paul.shaw@atheros.com>
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Luis R. Rodriguez [Wed, 16 Dec 2009 16:51:42 +0000 (11:51 -0500)]
ath9k: fix processing of TX PS null data frames
This is a backport of upstream commit:
e7824a50662f7f79b1a739f705b4d906c31cf221
When mac80211 was telling us to go into Powersave we listened
and immediately turned RX off. This meant hardware would not
see the ACKs from the AP we're associated with and hardware
we'd end up retransmiting the null data frame in a loop
helplessly.
Fix this by keeping track of the transmitted nullfunc frames
and only when we are sure the AP has sent back an ACK do we
go ahead and shut RX off.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Vivek Natarajan <Vivek.Natarajan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sujith [Wed, 16 Dec 2009 16:51:41 +0000 (11:51 -0500)]
ath9k: Fix TX hang poll routine
This is a backport of upstream commit:
332c556633b8c5fb4e890b1783122f2315526590
When TX is hung, the chip is reset. Ensure that
the chip is awake by using the PS wrappers.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Johannes Berg [Fri, 13 Nov 2009 22:40:09 +0000 (23:40 +0100)]
tracing: Fix event format export
commit
811cb50baf63461ce0bdb234927046131fc7fa8b upstream.
For some reason the export of the event print format to userspace
uses '#fmt' which breaks if the format string is anything but a plain
string, for example if it is built with macros then the macro names
are exported instead of their contents.
Use
"\"%s\"", fmt
instead of
"%s", #fmt
to export the string and not the way it is built.
For example, in net/mac80211/driver-trace.h for the trace event drv_start
there is:
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
Which use to produce:
print fmt: LOCAL_PR_FMT, REC->wiphy_name
Now produces:
print fmt: "%s", REC->wiphy_name
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
LKML-Reference: <
20091113224009.GB23942@elte.hu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Larry Finger [Tue, 24 Nov 2009 00:42:36 +0000 (18:42 -0600)]
b43legacy: avoid PPC fault during resume
commit
316a4d966cae3c2dec83ebb1ee1a3515f97b30ff upstream.
For PPC architecture with PHY Revision < 3, a read of the register
B43_MMIO_HWENABLED_LO will cause a CPU fault unless b43legacy_status()
returns a value of 2 (B43legacy_STAT_STARTED); however, one finds that
the driver is unable to associate after resuming from hibernation unless
this routine returns 1. To satisfy both conditions, the routine is rewritten
to return TRUE whenever b43legacy_status() returns a value < 2.
This patch fixes the second problem listed in the postings for Red Hat
Bugzilla #538523.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Sun, 6 Dec 2009 01:17:55 +0000 (17:17 -0800)]
sparc: Set UTS_MACHINE correctly.
[ Upstream commit
7f5620a5fcd658f219e85831d3691908f1eccbde ]
"ARCH" can be just about anything, so we shouldn't end up
with UTS_MACHINE of "sparc" in a 64-bit kernel build just
because someone set the personality using 'sparc32' or
similar. CONFIG_SPARC64 drives the compilation and
therefore provides the definitive value, not "ARCH".
This mirrors commit
8c6531f7a99f29ba8817ffb12cc9ecf190049bd6
(x86: correctly set UTS_MACHINE for "make ARCH=x86")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Wed, 9 Dec 2009 09:43:45 +0000 (01:43 -0800)]
sparc64: Fix stack debugging IRQ stack regression.
[ Upstream commit
166e553a575f09485f6d0df8a1ef3c5991f7d953 ]
Commit
4f70f7a91bffdcc39f088748dc678953eb9a3fbd
(sparc64: Implement IRQ stacks.) has two bugs.
First, the softirq range check forgets to subtract STACK_BIAS
before comparing with %sp. Next, on failure the wrong label
is jumped to, resulting in a bogus stack being loaded.
Reported-by: Igor Kovalenko <igor.v.kovalenko@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Wed, 9 Dec 2009 09:39:09 +0000 (01:39 -0800)]
sparc64: Fix overly strict range type matching for PCI devices.
[ Upstream commit
4230fa3b89ea1c413766bd411a8315a3d05aa6c7 ]
When we are trying to see if a range property entry applies
to a given address, we are overly strict about the type.
We should only allow I/O ranges for I/O addresses, and only allow
CONFIG space ranges for CONFIG space address.
However for MEM ranges, they come in 32-bit and 64-bit flavors.
And a lack of an exact match is OK if the range is 32-bit and
the address is 64-bit. We can assign a 64-bit address properly
into a 32-bit parent range just fine.
So allow it.
Reported-by: Patrick Finnegan <pat@computer-refuge.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Thu, 10 Dec 2009 07:44:43 +0000 (23:44 -0800)]
sparc64: Don't specify IRQF_SHARED for LDC interrupts.
[ Upstream commit
08a036d583409e3517e3d15b7478d029b25f2cf2 ]
IRQF_SHARED and IRQF_DISABLED don't mix.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Stanislav Brabec [Wed, 9 Dec 2009 05:00:22 +0000 (21:00 -0800)]
b44 WOL setup: one-bit-off stack corruption kernel panic fix
[ Upstream commit:
e0188829cb724e7d12a2d4e343b368ff1d6e1471 ]
About 50% of shutdowns of b44 Ethernet adapter ends by kernel panic
with kernels compiled with stack-protector.
Checking b44_magic_pattern() return values, one call of
b44_magic_pattern() returns 127. It means, that set_bit(128, pmask)
was called on line 1509. It means that bit 0 of 17th byte of pmask was
overwritten. But pmask has only 16 bytes. Stack corruption happens.
It seems that set_bit() on line 1509 always writes one bit off.
The fix does not only solve the stack corruption, but also makes Wake
On LAN working on my onboard B44 on Asus A7V-333X mainboard.
It seems that this problem affects all kernel versions since commit
725ad800 ([PATCH] b44: add wol for old nic) on 2006-06-20.
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Patrick McHardy [Tue, 1 Dec 2009 23:53:57 +0000 (15:53 -0800)]
ip_fragment: also adjust skb->truesize for packets not owned by a socket
[ Upstream commit
b2722b1c3a893ec6021508da15b32282ec79f4da ]
When a large packet gets reassembled by ip_defrag(), the head skb
accounts for all the fragments in skb->truesize. If this packet is
refragmented again, skb->truesize is not re-adjusted to reflect only
the head size since its not owned by a socket. If the head fragment
then gets recycled and reused for another received fragment, it might
exceed the defragmentation limits due to its large truesize value.
skb_recycle_check() explicitly checks for linear skbs, so any recycled
skb should reflect its true size in skb->truesize. Change ip_fragment()
to also adjust the truesize value of skbs not owned by a socket.
Reported-and-tested-by: Ben Menchaca <ben@bigfootnetworks.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Damian Lukowski [Mon, 7 Dec 2009 06:06:15 +0000 (06:06 +0000)]
tcp: Stalling connections: Fix timeout calculation routine
[ Upstream commit
07f29bc5bbae4e53e982ab956fed7207990a7786 ]
This patch fixes a problem in the TCP connection timeout calculation.
Currently, timeout decisions are made on the basis of the current
tcp_time_stamp and retrans_stamp, which is usually set at the first
retransmission.
However, if the retransmission fails in tcp_retransmit_skb(),
retrans_stamp is not updated and remains zero. This leads to wrong
decisions in retransmits_timed_out() if tcp_time_stamp is larger than
the specified timeout, which is very likely.
In this case, the TCP connection dies after the first attempted
(and unsuccessful) retransmission.
With this patch, tcp_skb_cb->when is used instead, when retrans_stamp
is not available.
This bug has been introduced together with retransmits_timed_out() in
2.6.32, as the number of retransmissions has been used for timeout
decisions before. The corresponding commit was
6fa12c85031485dff38ce550c24f10da23b0adaa (Revert Backoff [v3]:
Calculate TCP's connection close threshold as a time value.).
Thanks to Ilpo Järvinen for code suggestions and Frederic Leroy for
testing.
Reported-by: Frederic Leroy <fredo@starox.org>
Signed-off-by: Damian Lukowski <damian@tvk.rwth-aachen.de>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bartlomiej Zolnierkiewicz [Mon, 30 Nov 2009 08:55:18 +0000 (08:55 +0000)]
slc90e66: fix UDMA handling
[ Upstream commit
ee31527a02b0a8e1aa4a5e4084d2db5fa34737ed ]
Fix checking of the currently programmed UDMA mode.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Milan Broz [Thu, 10 Dec 2009 23:51:57 +0000 (23:51 +0000)]
dm crypt: make wipe message also wipe essiv key
commit
542da317668c35036e8471822a564b609d05af66 upstream.
The "wipe key" message is used to wipe the volume key from memory
temporarily, for example when suspending to RAM.
But the initialisation vector in ESSIV mode is calculated from the
hashed volume key, so the wipe message should wipe this IV key too and
reinitialise it when the volume key is reinstated.
This patch adds an IV wipe method called from a wipe message callback.
ESSIV is then reinitialised using the init function added by the
last patch.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Milan Broz [Thu, 10 Dec 2009 23:51:56 +0000 (23:51 +0000)]
dm crypt: separate essiv allocation from initialisation
commit
b95bf2d3d5a48b095bffe2a0cd8c40453cf59557 upstream.
This patch separates the construction of IV from its initialisation.
(For ESSIV it is a hash calculation based on volume key.)
Constructor code now preallocates hash tfm and salt array
and saves it in a private IV structure.
The next patch requires this to reinitialise the wiped IV
without reallocating memory when resuming a suspended device.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mikulas Patocka [Thu, 10 Dec 2009 23:51:54 +0000 (23:51 +0000)]
dm snapshot: cope with chunk size larger than origin
commit
8e87b9b81b3c370f7e53c1ab6e1c3519ef37a644 upstream.
Under some special conditions the snapshot hash_size is calculated as zero.
This patch instead sets a minimum value of 64, the same as for the
pending exception table.
rounddown_pow_of_two(0) is an undefined operation (it expands to shift
by -1). init_exception_table with an argument of 0 would fail with -ENOMEM.
The way to trigger the problem is to create a snapshot with a chunk size
that is larger than the origin device.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mikulas Patocka [Thu, 10 Dec 2009 23:51:52 +0000 (23:51 +0000)]
dm: avoid _hash_lock deadlock
commit
6076905b5ef39e0ea58db32583c9e0036c05e47b upstream.
Fix a reported deadlock if there are still unprocessed multipath events
on a device that is being removed.
_hash_lock is held during dev_remove while trying to send the
outstanding events. Sending the events requests the _hash_lock
again in dm_copy_name_and_uuid.
This patch introduces a separate lock around regions that modify the
link to the hash table (dm_set_mdptr) or the name or uuid so that
dm_copy_name_and_uuid no longer needs _hash_lock.
Additionally, dm_copy_name_and_uuid can only be called if md exists
so we can drop the dm_get() and dm_put() which can lead to a BUG()
while md is being freed.
The deadlock:
#0 [
ffff8106298dfb48] schedule at
ffffffff80063035
#1 [
ffff8106298dfc20] __down_read at
ffffffff8006475d
#2 [
ffff8106298dfc60] dm_copy_name_and_uuid at
ffffffff8824f740
#3 [
ffff8106298dfc90] dm_send_uevents at
ffffffff88252685
#4 [
ffff8106298dfcd0] event_callback at
ffffffff8824c678
#5 [
ffff8106298dfd00] dm_table_event at
ffffffff8824dd01
#6 [
ffff8106298dfd10] __hash_remove at
ffffffff882507ad
#7 [
ffff8106298dfd30] dev_remove at
ffffffff88250865
#8 [
ffff8106298dfd60] ctl_ioctl at
ffffffff88250d80
#9 [
ffff8106298dfee0] do_ioctl at
ffffffff800418c4
#10 [
ffff8106298dff00] vfs_ioctl at
ffffffff8002fab9
#11 [
ffff8106298dff40] sys_ioctl at
ffffffff8004bdaf
#12 [
ffff8106298dff80] tracesys at
ffffffff8005d28d (via system_call)
Reported-by: guy keren <choo@actcom.co.il>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Milan Broz [Thu, 10 Dec 2009 23:51:56 +0000 (23:51 +0000)]
dm crypt: restructure essiv error path
commit
5861f1be00b3b70f8ab5e5a81392a6cf69666cd2 upstream.
Use kzfree for salt deallocation because it is derived from the volume
key. Use a common error path in ESSIV constructor.
Required by a later patch which fixes the way key material is wiped
from memory.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Milan Broz [Thu, 10 Dec 2009 23:51:55 +0000 (23:51 +0000)]
dm crypt: move private iv fields to structs
commit
6047359277517c4e56d8bfd6ea4966d7a3924151 upstream.
Define private structures for IV so it's easy to add further attributes
in a following patch which fixes the way key material is wiped from
memory. Also move ESSIV destructor and remove unnecessary 'status'
operation.
There are no functional changes in this patch.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mikulas Patocka [Thu, 10 Dec 2009 23:51:53 +0000 (23:51 +0000)]
dm snapshot: only take lock for statustype info not table
commit
94e76572b5dd37b1f0f4b3742ee8a565daead932 upstream.
Take snapshot lock only for STATUSTYPE_INFO, not STATUSTYPE_TABLE.
Commit
4c6fff445d7aa753957856278d4d93bcad6e2c14
(dm-snapshot-lock-snapshot-while-supplying-status.patch)
introduced this use of the lock, but userspace applications using
libdevmapper have been found to request STATUSTYPE_TABLE while the device
is suspended and the lock is already held, leading to deadlock. Since
the lock is not necessary in this case, don't try to take it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Julia Lawall [Thu, 10 Dec 2009 23:51:52 +0000 (23:51 +0000)]
dm exception store: free tmp_store on persistent flag error
commit
613978f8711c7fd4d0aa856872375d2abd7c92ff upstream.
Error handling code following a kmalloc should free the allocated data.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Fri, 5 Jun 2009 10:58:37 +0000 (11:58 +0100)]
xen: try harder to balloon up under memory pressure.
commit
bc2c0303226ec716854d3c208c7f84fe7aa35cd7 upstream.
Currently if the balloon driver is unable to increase the guest's
reservation it assumes the failure was due to reaching its full
allocation, gives up on the ballooning operation and records the limit
it reached as the "hard limit". The driver will not try again until
the target is set again (even to the same value).
However it is possible that ballooning has in fact failed due to
memory pressure in the host and therefore it is desirable to keep
attempting to reach the target in case memory becomes available. The
most likely scenario is that some guests are ballooning down while
others are ballooning up and therefore there is temporary memory
pressure while things stabilise. You would not expect a well behaved
toolstack to ask a domain to balloon to more than its allocation nor
would you expect it to deliberately over-commit memory by setting
balloon targets which exceed the total host memory.
This patch drops the concept of a hard limit and causes the balloon
driver to retry increasing the reservation on a timer in the same
manner as when decreasing the reservation.
Also if we partially succeed in increasing the reservation
(i.e. receive less pages than we asked for) then we may as well keep
those pages rather than returning them to Xen.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Gianluca Guida [Thu, 30 Jul 2009 21:54:36 +0000 (22:54 +0100)]
Xen balloon: fix totalram_pages counting.
commit
3d65c9488cadd2f11bd4d60c7266e639ece5d0d6 upstream.
Change totalram_pages when a single page is added/removed to the
ballooned list. This avoid totalram_pages to be set erroneously to
max_pfn at boot.
Signed-off-by: Gianluca Guida <gianluca.guida@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Tue, 1 Dec 2009 11:47:15 +0000 (11:47 +0000)]
xen: explicitly create/destroy stop_machine workqueues outside suspend/resume region.
commit
b4606f2165153833247823e8c04c5e88cb3d298b upstream.
I have observed cases where the implicit stop_machine_destroy() done by
stop_machine() hangs while destroying the workqueues, specifically in
kthread_stop(). This seems to be because timer ticks are not restarted
until after stop_machine() returns.
Fortunately stop_machine provides a facility to pre-create/post-destroy
the workqueues so use this to ensure that workqueues are only destroyed
after everything is really up and running again.
I only actually observed this failure with 2.6.30. It seems that newer
kernels are somehow more robust against doing kthread_stop() without timer
interrupts (I tried some backports of some likely looking candidates but
did not track down the commit which added this robustness). However this
change seems like a reasonable belt&braces thing to do.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeremy Fitzhardinge [Wed, 25 Nov 2009 21:15:38 +0000 (13:15 -0800)]
xen: use iret for return from 64b kernel to 32b usermode
commit
6aaf5d633bb6cead81b396d861d7bae4b9a0ba7e upstream.
If Xen wants to return to a 32b usermode with sysret it must use the
right form. When using VCGF_in_syscall to trigger this, it looks at
the code segment and does a 32b sysret if it is FLAT_USER_CS32.
However, this is different from __USER32_CS, so it fails to return
properly if we use the normal Linux segment.
So avoid the whole mess by dropping VCGF_in_syscall and simply use
plain iret to return to usermode.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Tue, 1 Dec 2009 16:15:30 +0000 (16:15 +0000)]
xen: don't leak IRQs over suspend/resume.
commit
fed5ea87e02aaf902ff38c65b4514233db03dc09 upstream.
On resume irq_info[*].evtchn is reset to 0 since event channel mappings
are not preserved over suspend/resume. The other contents of irq_info
is preserved to allow rebind_evtchn_irq() to function.
However when a device resumes it will try to unbind from the
previous IRQ (e.g. blkfront goes blkfront_resume() -> blkif_free() ->
unbind_from_irqhandler() -> unbind_from_irq()). This will fail due to the
check for VALID_EVTCHN in unbind_from_irq() and the IRQ is leaked. The
device will then continue to resume and allocate a new IRQ, eventually
leading to find_unbound_irq() panic()ing.
Fix this by changing unbind_from_irq() to handle teardown of interrupts
which have type!=IRQT_UNBOUND but are not currently bound to a specific
event channel.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Tue, 1 Dec 2009 11:47:14 +0000 (11:47 +0000)]
xen: improve error handling in do_suspend.
commit
65f63384b391bf4d384327d8a7c6de9860290b5c upstream.
The existing error handling has a few issues:
- If freeze_processes() fails it exits with shutting_down = SHUTDOWN_SUSPEND.
- If dpm_suspend_noirq() fails it exits without resuming xenbus.
- If stop_machine() fails it exits without resuming xenbus or calling
dpm_resume_end().
- xs_suspend()/xs_resume() and dpm_suspend_noirq()/dpm_resume_noirq() were not
nested in the obvious way.
Fix by ensuring each failure case goto's the correct label. Treat a failure of
stop_machine() as a cancelled suspend in order to follow the correct resume
path.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Wed, 25 Nov 2009 14:12:08 +0000 (14:12 +0000)]
xen: call clock resume notifier on all CPUs
commit
f6eafe3665bcc374c66775d58312d1c06c55303f upstream.
tick_resume() is never called on secondary processors. Presumably this
is because they are offlined for suspend on native and so this is
normally taken care of in the CPU onlining path. Under Xen we keep all
CPUs online over a suspend.
This patch papers over the issue for me but I will investigate a more
generic, less hacky, way of doing to the same.
tick_suspend is also only called on the boot CPU which I presume should
be fixed too.
Signed-off-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeremy Fitzhardinge [Tue, 24 Nov 2009 17:38:25 +0000 (09:38 -0800)]
xen: register runstate info for boot CPU early
commit
499d19b82b586aef18727b9ae1437f8f37b66e91 upstream.
printk timestamping uses sched_clock, which in turn relies on runstate
info under Xen. So make sure we set it up before any printks can
be called.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeremy Fitzhardinge [Tue, 24 Nov 2009 17:58:49 +0000 (09:58 -0800)]
xen: don't call dpm_resume_noirq() with interrupts disabled.
commit
922cc38ab71d1360978e65207e4a4f4988987127 upstream.
dpm_resume_noirq() takes a mutex, so it can't be called from a no-interrupt
context. Don't call it from within the stop-machine function, but just
afterwards, since we're resuming anyway, regardless of what happened.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Tue, 24 Nov 2009 17:32:48 +0000 (09:32 -0800)]
xen: register runstate on secondary CPUs
commit
028896721ac04f6fa0697f3ecac3f98761746363 upstream.
The commit "xen: re-register runstate area earlier on resume" caused us
to never try and setup the runstate area for secondary CPUs. Ensure that
we do this...
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Tue, 24 Nov 2009 10:16:23 +0000 (10:16 +0000)]
xen: register timer interrupt with IRQF_TIMER
commit
f350c7922faad3397c98c81a9e5658f5a1ef0214 upstream.
Otherwise the timer is disabled by dpm_suspend_noirq() which in turn prevents
correct operation of stop_machine on multi-processor systems and breaks
suspend.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Sat, 21 Nov 2009 11:32:49 +0000 (11:32 +0000)]
xen: correctly restore pfn_to_mfn_list_list after resume
commit
fa24ba62ea2869308ffc9f0b286ac9650b4ca6cb upstream.
pvops kernels >= 2.6.30 can currently only be saved and restored once. The
second attempt to save results in:
ERROR Internal error: Frame# in pfn-to-mfn frame list is not in pseudophys
ERROR Internal error: entry 0: p2m_frame_list[0] is 0xf2c2c2c2, max 0x120000
ERROR Internal error: Failed to map/save the p2m frame list
I finally narrowed it down to:
commit
cdaead6b4e657f960d6d6f9f380e7dfeedc6a09b
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Date: Fri Feb 27 15:34:59 2009 -0800
xen: split construction of p2m mfn tables from registration
Build the p2m_mfn_list_list early with the rest of the p2m table, but
register it later when the real shared_info structure is in place.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
The unforeseen side-effect of this change was to cause the mfn list list to not
be rebuilt on resume. Prior to this change it would have been rebuilt via
xen_post_suspend() -> xen_setup_shared_info() -> xen_setup_mfn_list_list().
Fix by explicitly calling xen_build_mfn_list_list() from xen_post_suspend().
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeremy Fitzhardinge [Sat, 21 Nov 2009 00:46:29 +0000 (08:46 +0800)]
xen: restore runstate_info even if !have_vcpu_info_placement
commit
3905bb2aa7bb801b31946b37a4635ebac4009051 upstream.
Even if have_vcpu_info_placement is not set, we still need to set up
the runstate area on each resumed vcpu.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Sat, 21 Nov 2009 00:35:55 +0000 (08:35 +0800)]
xen: re-register runstate area earlier on resume.
commit
be012920ecba161ad20303a3f6d9e96c58cf97c7 upstream.
This is necessary to ensure the runstate area is available to
xen_sched_clock before any calls to printk which will require it in
order to provide a timestamp.
I chose to pull the xen_setup_runstate_info out of xen_time_init into
the caller in order to maintain parity with calling
xen_setup_runstate_info separately from calling xen_time_resume.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>