Heiko Carstens [Fri, 26 Nov 2010 12:00:59 +0000 (13:00 +0100)]
nohz: Fix printk_needs_cpu() return value on offline cpus
commit
61ab25447ad6334a74e32f60efb135a3467223f8 upstream.
This patch fixes a hang observed with 2.6.32 kernels where timers got enqueued
on offline cpus.
printk_needs_cpu() may return 1 if called on offline cpus. When a cpu gets
offlined it schedules the idle process which, before killing its own cpu, will
call tick_nohz_stop_sched_tick(). That function in turn will call
printk_needs_cpu() in order to check if the local tick can be disabled. On
offline cpus this function should naturally return 0 since regardless if the
tick gets disabled or not the cpu will be dead short after. That is besides the
fact that __cpu_disable() should already have made sure that no interrupts on
the offlined cpu will be delivered anyway.
In this case it prevents tick_nohz_stop_sched_tick() to call
select_nohz_load_balancer(). No idea if that really is a problem. However what
made me debug this is that on 2.6.32 the function get_nohz_load_balancer() is
used within __mod_timer() to select a cpu on which a timer gets enqueued. If
printk_needs_cpu() returns 1 then the nohz_load_balancer cpu doesn't get
updated when a cpu gets offlined. It may contain the cpu number of an offline
cpu. In turn timers get enqueued on an offline cpu and not very surprisingly
they never expire and cause system hangs.
This has been observed 2.6.32 kernels. On current kernels __mod_timer() uses
get_nohz_timer_target() which doesn't have that problem. However there might be
other problems because of the too early exit tick_nohz_stop_sched_tick() in
case a cpu goes offline.
Easiest way to fix this is just to test if the current cpu is offline and call
printk_tick() directly which clears the condition.
Alternatively I tried a cpu hotplug notifier which would clear the condition,
however between calling the notifier function and printk_needs_cpu() something
could have called printk() again and the problem is back again. This seems to
be the safest fix.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <
20101126120235.
406766476@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alex Deucher [Thu, 9 Dec 2010 00:09:42 +0000 (19:09 -0500)]
drm/kms: remove spaces from connector names (v2)
commit
e76116ca9671e2e5239054a40303b94feab585ad upstream.
Grub doesn't parse spaces in parameters correctly, so
this makes it impossible to force video= parameters
for kms on the grub kernel command line.
v2: shorten the names to make them easier to type.
Reported-by: Sergej Pupykin <ml@sergej.pp.ru>
Cc: Sergej Pupykin <ml@sergej.pp.ru>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Daniel T Chen [Fri, 3 Dec 2010 03:45:45 +0000 (22:45 -0500)]
ALSA: hda: Use model=lg quirk for LG P1 Express to enable playback and capture
commit
77c4d5cdb81d25a45fbdfb84dd3348121219a072 upstream.
BugLink: https://launchpad.net/bugs/595482
The original reporter states that audible playback from the internal
speaker is inaudible despite the hardware being properly detected. To
work around this symptom, he uses the model=lg quirk to properly enable
both playback, capture, and jack sense. Another user corroborates this
workaround on separate hardware. Add this PCI SSID to the quirk table
to enable it for further LG P1 Expresses.
Reported-and-tested-by: Philip Peitsch <philip.peitsch@gmail.com>
Tested-by: nikhov
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Miklos Szeredi [Tue, 30 Nov 2010 15:39:27 +0000 (16:39 +0100)]
fuse: fix ioctl when server is 32bit
commit
d9d318d39dd5cb686660504a3565aac453709ccc upstream.
If a 32bit CUSE server is run on 64bit this results in EIO being
returned to the caller.
The reason is that FUSE_IOCTL_RETRY reply was defined to use 'struct
iovec', which is different on 32bit and 64bit archs.
Work around this by looking at the size of the reply to determine
which struct was used. This is only needed if CONFIG_COMPAT is
defined.
A more permanent fix for the interface will be to use the same struct
on both 32bit and 64bit.
Reported-by: "ccmail111" <ccmail111@yahoo.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Miklos Szeredi [Tue, 30 Nov 2010 15:39:27 +0000 (16:39 +0100)]
fuse: verify ioctl retries
commit
7572777eef78ebdee1ecb7c258c0ef94d35bad16 upstream.
Verify that the total length of the iovec returned in FUSE_IOCTL_RETRY
doesn't overflow iov_length().
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
H. Peter Anvin [Sat, 11 Dec 2010 04:57:04 +0000 (23:57 -0500)]
x86, hotplug: Use mwait to offline a processor, fix the legacy case
upstream
ea53069231f9317062910d6e772cca4ce93de8c8
x86, hotplug: Use mwait to offline a processor, fix the legacy case
Here included also some small follow-on patches to the same code:
upstream
a68e5c94f7d3dd64fef34dd5d97e365cae4bb42a
x86, hotplug: Move WBINVD back outside the play_dead loop
upstream
ce5f68246bf2385d6174856708d0b746dc378f20
x86, hotplug: In the MWAIT case of play_dead, CLFLUSH the cache line
https://bugzilla.kernel.org/show_bug.cgi?id=5471
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ben Hutchings [Sat, 11 Dec 2010 05:51:39 +0000 (05:51 +0000)]
TTY: Fix error return from tty_ldisc_open()
The backported version of "TTY: ldisc, fix open flag handling" in
2.6.32.27 causes tty_ldisc_open() to return 0 on error. Fix that.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 9 Dec 2010 21:29:45 +0000 (13:29 -0800)]
Linux 2.6.32.27
Robin Holt [Wed, 16 Dec 2009 00:47:57 +0000 (16:47 -0800)]
x86: uv: xpc NULL deref when mesq becomes empty
commit
15b87d67ff3dc042bee42f991858d6b121b3b3ca upstream.
Under heavy load conditions, our set of xpc messages may become exhausted.
The code handles this correctly with the exception of the management code
which hits a NULL pointer dereference.
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
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>
Robin Holt [Wed, 16 Dec 2009 00:47:58 +0000 (16:47 -0800)]
X86: uv: xpc_make_first_contact hang due to not accepting ACTIVE state
commit
dbd2918ec65c35f36bb102c88eafe87be0552f6f upstream.
Many times while the initial connection is being made, the contacted
partition will send back both the ACTIVATING and the ACTIVE
remote_act_state changes in very close succescion. The 1/4 second delay
in the make first contact loop is large enough to nearly always miss the
ACTIVATING state change.
Since either state indicates the remote partition has acknowledged our
state change, accept either.
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
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>
Robin Holt [Wed, 16 Dec 2009 00:47:59 +0000 (16:47 -0800)]
x86: uv: XPC receive message reuse triggers invalid BUG_ON()
commit
046d6c563b1c6226bbf0f84e5b2413ad8ab921a1 upstream.
This was a difficult bug to trip. XPC was in the middle of sending an
acknowledgement for a received message.
In xpc_received_payload_uv():
.
ret = xpc_send_gru_msg(ch->sn.uv.cached_notify_gru_mq_desc, msg,
sizeof(struct xpc_notify_mq_msghdr_uv));
if (ret != xpSuccess)
XPC_DEACTIVATE_PARTITION(&xpc_partitions[ch->partid], ret);
msg->hdr.msg_slot_number += ch->remote_nentries;
at the point in xpc_send_gru_msg() where the hardware has dispatched the
acknowledgement, the remote side is able to reuse the message structure
and send a message with a different slot number. This problem is made
worse by interrupts.
The adjustment of msg_slot_number and the BUG_ON in
xpc_handle_notify_mq_msg_uv() which verifies the msg_slot_number is
consistent are only used for debug purposes. Since a fix for this that
preserves the debug functionality would either have to infringe upon the
payload or allocate another structure just for debug, I decided to remove
it entirely.
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
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>
Robin Holt [Wed, 16 Dec 2009 00:48:00 +0000 (16:48 -0800)]
UV - XPC: pass nasid instead of nid to gru_create_message_queue
commit
57e6d258b1e41cd7ceb26fa43ce116939d8440b1 upstream.
Currently, the UV xpc code is passing nid to the gru_create_message_queue
instead of nasid as it expects.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.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>
Eric Dumazet [Mon, 16 Aug 2010 20:04:22 +0000 (20:04 +0000)]
net sched: fix some kernel memory leaks
commit
1c40be12f7d8ca1d387510d39787b12e512a7ce8 upstream.
We leak at least 32bits of kernel memory to user land in tc dump,
because we dont init all fields (capab ?) of the dumped structure.
Use C99 initializers so that holes and non explicit fields are zeroed.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: dann frazier <dannf@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Changli Gao [Tue, 29 Jun 2010 23:07:09 +0000 (23:07 +0000)]
act_nat: use stack variable
commit
504f85c9d05f7c605306e808f0d835fe11bfd18d upstream.
act_nat: use stack variable
structure tc_nat isn't too big for stack, so we can put it in stack.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Cc: dann frazier <dannf@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Heiko Carstens [Thu, 25 Nov 2010 08:52:45 +0000 (09:52 +0100)]
nmi: fix clock comparator revalidation
commit
e8129c642155616d9e2160a75f103e127c8c3708 upstream.
On each machine check all registers are revalidated. The save area for
the clock comparator however only contains the upper most seven bytes
of the former contents, if valid.
Therefore the machine check handler uses a store clock instruction to
get the current time and writes that to the clock comparator register
which in turn will generate an immediate timer interrupt.
However within the lowcore the expected time of the next timer
interrupt is stored. If the interrupt happens before that time the
handler won't be called. In turn the clock comparator won't be
reprogrammed and therefore the interrupt condition stays pending which
causes an interrupt loop until the expected time is reached.
On NOHZ machines this can result in unresponsive machines since the
time of the next expected interrupted can be a couple of days in the
future.
To fix this just revalidate the clock comparator register with the
expected value.
In addition the special handling for udelay must be changed as well.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Thu, 28 Oct 2010 18:41:55 +0000 (11:41 -0700)]
net: Limit socket I/O iovec total length to INT_MAX.
commit
8acfe468b0384e834a303f08ebc4953d72fb690a upstream.
This helps protect us from overflow issues down in the
individual protocol sendmsg/recvmsg handlers. Once
we hit INT_MAX we truncate out the rest of the iovec
by setting the iov_len members to zero.
This works because:
1) For SOCK_STREAM and SOCK_SEQPACKET sockets, partial
writes are allowed and the application will just continue
with another write to send the rest of the data.
2) For datagram oriented sockets, where there must be a
one-to-one correspondance between write() calls and
packets on the wire, INT_MAX is going to be far larger
than the packet size limit the protocol is going to
check for and signal with -EMSGSIZE.
Based upon a patch by Linus Torvalds.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Linus Torvalds [Sat, 30 Oct 2010 23:43:10 +0000 (16:43 -0700)]
net: Truncate recvfrom and sendto length to INT_MAX.
commit
253eacc070b114c2ec1f81b067d2fed7305467b0 upstream.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dan Rosenberg [Wed, 17 Nov 2010 06:37:16 +0000 (06:37 +0000)]
rds: Integer overflow in RDS cmsg handling
commit
218854af84038d828a32f061858b1902ed2beec6 upstream.
In rds_cmsg_rdma_args(), the user-provided args->nr_local value is
restricted to less than UINT_MAX. This seems to need a tighter upper
bound, since the calculation of total iov_size can overflow, resulting
in a small sock_kmalloc() allocation. This would probably just result
in walking off the heap and crashing when calling rds_rdma_pages() with
a high count value. If it somehow doesn't crash here, then memory
corruption could occur soon after.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Phil Blundell [Wed, 24 Nov 2010 19:49:53 +0000 (11:49 -0800)]
econet: fix CVE-2010-3850
commit
16c41745c7b92a243d0874f534c1655196c64b74 upstream.
Add missing check for capable(CAP_NET_ADMIN) in SIOCSIFADDR operation.
Signed-off-by: Phil Blundell <philb@gnu.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Phil Blundell [Wed, 24 Nov 2010 19:49:19 +0000 (11:49 -0800)]
econet: disallow NULL remote addr for sendmsg(), fixes CVE-2010-3849
commit
fa0e846494792e722d817b9d3d625a4ef4896c96 upstream.
Later parts of econet_sendmsg() rely on saddr != NULL, so return early
with EINVAL if NULL was passed otherwise an oops may occur.
Signed-off-by: Phil Blundell <philb@gnu.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
H. Peter Anvin [Wed, 18 Aug 2010 18:42:23 +0000 (11:42 -0700)]
x86-32: Fix dummy trampoline-related inline stubs
commit
8848a91068c018bc91f597038a0f41462a0f88a4 upstream.
Fix dummy inline stubs for trampoline-related functions when no
trampolines exist (until we get rid of the no-trampoline case
entirely.)
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <
4C6C294D.
3030404@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Hugh Dickins [Wed, 25 Aug 2010 05:44:12 +0000 (22:44 -0700)]
x86, mm: Fix CONFIG_VMSPLIT_1G and 2G_OPT trampoline
commit
b7d460897739e02f186425b7276e3fdb1595cea7 upstream.
rc2 kernel crashes when booting second cpu on this CONFIG_VMSPLIT_2G_OPT
laptop: whereas cloning from kernel to low mappings pgd range does need
to limit by both KERNEL_PGD_PTRS and KERNEL_PGD_BOUNDARY, cloning kernel
pgd range itself must not be limited by the smaller KERNEL_PGD_BOUNDARY.
Signed-off-by: Hugh Dickins <hughd@google.com>
LKML-Reference: <alpine.LSU.2.00.
1008242235120.2515@sister.anvils>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Joerg Roedel [Mon, 16 Aug 2010 12:38:33 +0000 (14:38 +0200)]
x86-32: Separate 1:1 pagetables from swapper_pg_dir
commit
fd89a137924e0710078c3ae855e7cec1c43cb845 upstream.
This patch fixes machine crashes which occur when heavily exercising the
CPU hotplug codepaths on a 32-bit kernel. These crashes are caused by
AMD Erratum 383 and result in a fatal machine check exception. Here's
the scenario:
1. On 32-bit, the swapper_pg_dir page table is used as the initial page
table for booting a secondary CPU.
2. To make this work, swapper_pg_dir needs a direct mapping of physical
memory in it (the low mappings). By adding those low, large page (2M)
mappings (PAE kernel), we create the necessary conditions for Erratum
383 to occur.
3. Other CPUs which do not participate in the off- and onlining game may
use swapper_pg_dir while the low mappings are present (when leave_mm is
called). For all steps below, the CPU referred to is a CPU that is using
swapper_pg_dir, and not the CPU which is being onlined.
4. The presence of the low mappings in swapper_pg_dir can result
in TLB entries for addresses below __PAGE_OFFSET to be established
speculatively. These TLB entries are marked global and large.
5. When the CPU with such TLB entry switches to another page table, this
TLB entry remains because it is global.
6. The process then generates an access to an address covered by the
above TLB entry but there is a permission mismatch - the TLB entry
covers a large global page not accessible to userspace.
7. Due to this permission mismatch a new 4kb, user TLB entry gets
established. Further, Erratum 383 provides for a small window of time
where both TLB entries are present. This results in an uncorrectable
machine check exception signalling a TLB multimatch which panics the
machine.
There are two ways to fix this issue:
1. Always do a global TLB flush when a new cr3 is loaded and the
old page table was swapper_pg_dir. I consider this a hack hard
to understand and with performance implications
2. Do not use swapper_pg_dir to boot secondary CPUs like 64-bit
does.
This patch implements solution 2. It introduces a trampoline_pg_dir
which has the same layout as swapper_pg_dir with low_mappings. This page
table is used as the initial page table of the booting CPU. Later in the
bringup process, it switches to swapper_pg_dir and does a global TLB
flush. This fixes the crashes in our test cases.
-v2: switch to swapper_pg_dir right after entering start_secondary() so
that we are able to access percpu data which might not be mapped in the
trampoline page table.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
LKML-Reference: <
20100816123833.GB28147@aftab>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Herbert Xu [Thu, 4 Nov 2010 18:38:39 +0000 (14:38 -0400)]
crypto: padlock - Fix AES-CBC handling on odd-block-sized input
commit
c054a076a1bd4731820a9c4d638b13d5c9bf5935 upstream.
On certain VIA chipsets AES-CBC requires the input/output to be
a multiple of 64 bytes. We had a workaround for this but it was
buggy as it sent the whole input for processing when it is meant
to only send the initial number of blocks which makes the rest
a multiple of 64 bytes.
As expected this causes memory corruption whenever the workaround
kicks in.
Reported-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dan Rosenberg [Fri, 12 Nov 2010 20:44:42 +0000 (12:44 -0800)]
x25: Prevent crashing when parsing bad X.25 facilities
commit
5ef41308f94dcbb3b7afc56cdef1c2ba53fa5d2f upstream.
Now with improved comma support.
On parsing malformed X.25 facilities, decrementing the remaining length
may cause it to underflow. Since the length is an unsigned integer,
this will result in the loop continuing until the kernel crashes.
This patch adds checks to ensure decrementing the remaining length does
not cause it to wrap around.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dan Rosenberg [Wed, 15 Sep 2010 21:44:22 +0000 (18:44 -0300)]
V4L/DVB: ivtvfb: prevent reading uninitialized stack memory
commit
405707985594169cfd0b1d97d29fcb4b4c6f2ac9 upstream.
The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16
bytes of uninitialized stack memory, because the "reserved" member of
the fb_vblank struct declared on the stack is not altered or zeroed
before being copied back to the user. This patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Oliver Hartkopp [Wed, 10 Nov 2010 12:10:30 +0000 (12:10 +0000)]
can-bcm: fix minor heap overflow
commit
0597d1b99fcfc2c0eada09a698f85ed413d4ba84 upstream.
On 64-bit platforms the ASCII representation of a pointer may be up to 17
bytes long. This patch increases the length of the buffer accordingly.
http://marc.info/?l=linux-netdev&m=
128872251418192&w=2
Reported-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
andrew hendry [Wed, 3 Nov 2010 12:54:53 +0000 (12:54 +0000)]
memory corruption in X.25 facilities parsing
commit
a6331d6f9a4298173b413cf99a40cc86a9d92c37 upstream.
Signed-of-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
John Hughes [Thu, 8 Apr 2010 04:29:25 +0000 (21:29 -0700)]
x25: Patch to fix bug 15678 - x25 accesses fields beyond end of packet.
commit
f5eb917b861828da18dc28854308068c66d1449a upstream.
Here is a patch to stop X.25 examining fields beyond the end of the packet.
For example, when a simple CALL ACCEPTED was received:
10 10 0f
x25_parse_facilities was attempting to decode the FACILITIES field, but this
packet contains no facilities field.
Signed-off-by: John Hughes <john@calva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dmitry Torokhov [Thu, 4 Nov 2010 16:12:44 +0000 (09:12 -0700)]
Input: i8042 - add Sony VAIO VPCZ122GX to nomux list
[Note that the mainline will not have this particular fix but rather
will blacklist entire VAIO line based off DMI board name. For stable
I am being a bit more cautious and blacklist one particular product.]
Trying to query/activate active multiplexing mode on this VAIO makes
both keyboard and touchpad inoperable. Futher kernels will blacklist
entire VAIO line, however here we blacklist just one particular model.
Reported-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Laurent Pinchart [Thu, 8 Oct 2009 22:38:10 +0000 (19:38 -0300)]
V4L/DVB (13154): uvcvideo: Handle garbage at the end of streaming interface descriptors
commit
c4ed8c66d79d707d89fe732ff5b97739edf1ba62 upstream.
At least one 5986:0241 webcam model includes vendor-specific descriptors
at the end of its streaming interface descriptors. Print an information
UVC_TRACE_DESCR message and try to continue parsing the descriptors
rather than bailing out with an error.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Luke Macken [Wed, 22 Sep 2010 20:05:04 +0000 (13:05 -0700)]
efifb: support the EFI framebuffer on more Apple hardware
commit
a5757c2a474a15f87e5baa9a4caacc31cde2bae6 upstream.
Enable the EFI framebuffer on 14 more Macs, including the iMac11,1
iMac10,1 iMac8,1 Macmini3,1 Macmini4,1 MacBook5,1 MacBook6,1 MacBook7,1
MacBookPro2,2 MacBookPro5,2 MacBookPro5,3 MacBookPro6,1 MacBookPro6,2 and
MacBookPro7,1
Information gathered from various user submissions.
https://bugzilla.redhat.com/show_bug.cgi?id=528232
http://ubuntuforums.org/showthread.php?t=
1557326
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Luke Macken <lmacken@redhat.com>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Thomas Gerlach [Fri, 23 Apr 2010 17:17:50 +0000 (13:17 -0400)]
drivers/video/efifb.c: support framebuffer for NVIDIA 9400M in MacBook Pro 5,1
commit
8a3bdfe6cd841880a5d849c40f90093b3817f6e0 upstream.
Description of patch:
---------------------
This is a patch for the EFI framebuffer driver to enable the framebuffer
of the NVIDIA 9400M as found in MacBook Pro (MBP) 5,1 and up. The
framebuffer of the NVIDIA graphic cards are located at the following
addresses in memory:
9400M: 0xC0010000
9600M GT: 0xB0030000
The patch delivered right here only provides the memory location of the
framebuffer of the 9400M device. The 9600M GT is not covered. It is
assumed that the 9400M is used when powered up the MBP.
The information which device is currently powered and in use is stored in
the 64 bytes large EFI variable "gpu-power-prefs". More specifically,
byte 0x3B indicates whether 9600M GT (0x00) or 9400M (0x01) is online.
The PCI bus IDs are the following:
9400M: PCI 03:00:00
9600M GT: PCI 02:00:00
The EFI variables can be easily read-out and manipulated with "rEFIt", an
MBP specific bootloader tool. For more information on how handle rEFIt
and EFI variables please consult "http://refit.sourceforge.net" and
"http://ubuntuforums.org/archive/index.php/t-
1076879.html".
IMPORTANT NOTE: The information on how to activate the 9400M device given
at "ubuntuforums.org" is not correct, since it states
gpu-power-prefs[0x3B] = 0x00 -> 9400M (PCI 02:00:00)
gpu-power-prefs[0x3B] = 0x01 -> 9600M GT (PCI 03:00:00)
Actually, the assignment of the values and the PCI bus IDs are swapped.
Suggestions:
------------
To cover framebuffers of both 9400M and 9600M GT, I would suggest to
implement a conditional on "gpu-power-prefs". Depending on the value of
byte 0x3B, the according framebuffer is selected. However, this requires
kernel access to the EFI variables.
[akpm@linux-foundation.org: rename optname, per Peter Jones]
Signed-off-by: Thomas Gerlach <t.m.gerlach@freenet.de>
Acked-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jack Steiner [Fri, 10 Sep 2010 15:08:08 +0000 (10:08 -0500)]
x86, UV: Fix initialization of max_pnode
commit
36ac4b987bea9a95217e1af552252f275ca7fc44 upstream.
Fix calculation of "max_pnode" for systems where the the highest
blade has neither cpus or memory. (And, yes, although rare this
does occur).
Signed-off-by: Jack Steiner <steiner@sgi.com>
LKML-Reference: <
20100910150808.GA19802@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jack Steiner [Wed, 17 Mar 2010 15:40:38 +0000 (10:40 -0500)]
x86, UV: Delete unneeded boot messages
commit
2acebe9ecb2b77876e87a1480729cfb2db4570dd upstream.
SGI:UV: Delete extra boot messages that describe the system
topology. These messages are no longer useful.
Signed-off-by: Jack Steiner <steiner@sgi.com>
LKML-Reference: <
20100317154038.GA29346@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Wed, 22 Sep 2010 05:30:13 +0000 (22:30 -0700)]
sparc: Prevent no-handler signal syscall restart recursion.
[ Upstream commit
c27852597829128a9c9d96d79ec454a83c6b0da5 ]
Explicitly clear the "in-syscall" bit when we have no signal
handler and back up the program counters to back up the system
call.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Wed, 22 Sep 2010 04:41:12 +0000 (21:41 -0700)]
sparc: Don't mask signal when we can't setup signal frame.
[ Upstream commit
392c21802ee3aa85cee0e703105f797a8a7b9416 ]
Don't invoke the signal handler tracehook in that situation
either.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David S. Miller [Tue, 21 Sep 2010 06:24:52 +0000 (23:24 -0700)]
sparc64: Fix race in signal instruction flushing.
[ Upstream commit
05c5e7698bdc54b3079a3517d86077f49ebcc788 ]
If another cpu does a very wide munmap() on the signal frame area,
it can tear down the page table hierarchy from underneath us.
Borrow an idea from the 64-bit fault path's get_user_insn(), and
disable cross call interrupts during the page table traversal
to lock them in place while we operate.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Robin Holt [Wed, 20 Oct 2010 02:03:37 +0000 (02:03 +0000)]
Limit sysctl_tcp_mem and sysctl_udp_mem initializers to prevent integer overflows.
[ Upstream fixed this in a different way as parts of the commits:
8d987e5c7510 (net: avoid limits overflow)
a9febbb4bd13 (sysctl: min/max bounds are optional)
27b3d80a7b6a (sysctl: fix min/max handling in __do_proc_doulongvec_minmax())
-DaveM ]
On a 16TB x86_64 machine, sysctl_tcp_mem[2], sysctl_udp_mem[2], and
sysctl_sctp_mem[2] can integer overflow. Set limit such that they are
maximized without overflowing.
Signed-off-by: Robin Holt <holt@sgi.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: Willy Tarreau <w@1wt.eu>
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-sctp@vger.kernel.org
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jarek Poplawski [Tue, 19 Oct 2010 00:06:36 +0000 (00:06 +0000)]
gianfar: Fix crashes on RX path (Was Re: [Bugme-new] [Bug 19692] New: linux-2.6.36-rc5 crash with gianfar ethernet at full line rate traffic)
[ Upstream commit
0d1fe1111c667e9c713d7efc7ae468a605f236a4 ]
The rx_recycle queue is global per device but can be accesed by many
napi handlers at the same time, so it needs full skb_queue primitives
(with locking). Otherwise, various crashes caused by broken skbs are
possible.
This patch resolves, at least partly, bugzilla bug 19692. (Because of
some doubts that there could be still something around which is hard
to reproduce my proposal is to leave this bug opened for a month.)
Fixes commit:
0fd56bb5be6455d0d42241e65aed057244665e5e ("gianfar: Add
support for skb recycling")
Reported-by: emin ak <eminak71@gmail.com>
Tested-by: emin ak <eminak71@gmail.com>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
CC: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Antonio Ospite [Tue, 5 Oct 2010 15:20:17 +0000 (17:20 +0200)]
HID: hidraw, fix a NULL pointer dereference in hidraw_write
commit
e42dee9a99a3ecd32b5c027e8f7411fb5bc11eb6 upstream.
BUG: unable to handle kernel NULL pointer dereference at
0000000000000028
IP: [<
ffffffffa0f0a625>] hidraw_write+0x3b/0x116 [hid]
[...]
This is reproducible by disconnecting the device while userspace writes
to dev node in a loop and doesn't check return values in order to exit
the loop.
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Antonio Ospite [Tue, 5 Oct 2010 15:20:16 +0000 (17:20 +0200)]
HID: hidraw, fix a NULL pointer dereference in hidraw_ioctl
commit
d20d5ffab92f00188f360c44c791a5ffb988247c upstream.
BUG: unable to handle kernel NULL pointer dereference at
0000000000000028
IP: [<
ffffffffa02c66b4>] hidraw_ioctl+0xfc/0x32c [hid]
[...]
This is reproducible by disconnecting the device while userspace does
ioctl in a loop and doesn't check return values in order to exit the
loop.
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeff Mahoney [Tue, 31 Aug 2010 13:21:42 +0000 (13:21 +0000)]
net sched: fix kernel leak in act_police
commit
0f04cfd098fb81fded74e78ea1a1b86cc6c6c31e upstream.
While reviewing commit
1c40be12f7d8ca1d387510d39787b12e512a7ce8, I
audited other users of tc_action_ops->dump for information leaks.
That commit covered almost all of them but act_police still had a leak.
opt.limit and opt.capab aren't zeroed out before the structure is
passed out.
This patch uses the C99 initializers to zero everything unused out.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Larry Finger [Sat, 13 Nov 2010 19:01:56 +0000 (13:01 -0600)]
staging: rtl8187se: Change panic to warn when RF switch turned off
commit
f36d83a8cb7224f45fdfa1129a616dff56479a09 upstream.
This driver issues a kernel panic over conditions that do not
justify such drastic action. Change these to log entries with
a stack dump.
This patch fixes the system crash reported in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674285.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-and-Tested-by: Robie Basik <rb-oss-3@justgohome.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Tue, 16 Nov 2010 19:18:33 +0000 (11:18 -0800)]
Staging: frontier: fix up some sysfs attribute permissions
commit
3bad28ec006ad6ab2bca4e5103860b75391e3c9d and
2a767fda5d0d8dcff465724dfad6ee131489b3f2 upstream merged together.
They should not be writable by any user
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Taht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
James Jones [Tue, 23 Nov 2010 23:21:37 +0000 (00:21 +0100)]
ARM: 6482/2: Fix find_next_zero_bit and related assembly
commit
0e91ec0c06d2cd15071a6021c94840a50e6671aa upstream.
The find_next_bit, find_first_bit, find_next_zero_bit
and find_first_zero_bit functions were not properly
clamping to the maxbit argument at the bit level. They
were instead only checking maxbit at the byte level.
To fix this, add a compare and a conditional move
instruction to the end of the common bit-within-the-
byte code used by all the functions and be sure not to
clobber the maxbit argument before it is used.
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: James Jones <jajones@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Will Deacon [Fri, 19 Nov 2010 12:18:31 +0000 (13:18 +0100)]
ARM: 6489/1: thumb2: fix incorrect optimisation in usracc
commit
1142b71d85894dcff1466dd6c871ea3c89e0352c upstream.
Commit
8b592783 added a Thumb-2 variant of usracc which, when it is
called with \rept=2, calls usraccoff once with an offset of 0 and
secondly with a hard-coded offset of 4 in order to avoid incrementing
the pointer again. If \inc != 4 then we will store the data to the wrong
offset from \ptr. Luckily, the only caller that passes \rept=2 to this
function is __clear_user so we haven't been actively corrupting user data.
This patch fixes usracc to pass \inc instead of #4 to usraccoff
when it is called a second time.
Reported-by: Tony Thompson <tony.thompson@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Pekka Enberg [Mon, 8 Nov 2010 19:29:07 +0000 (21:29 +0200)]
perf_events: Fix perf_counter_mmap() hook in mprotect()
commit
63bfd7384b119409685a17d5c58f0b56e5dc03da upstream.
As pointed out by Linus, commit
dab5855 ("perf_counter: Add mmap event hooks to
mprotect()") is fundamentally wrong as mprotect_fixup() can free 'vma' due to
merging. Fix the problem by moving perf_event_mmap() hook to
mprotect_fixup().
Note: there's another successful return path from mprotect_fixup() if old
flags equal to new flags. We don't, however, need to call
perf_event_mmap() there because 'perf' already knows the VMA is
executable.
Reported-by: Dave Jones <davej@redhat.com>
Analyzed-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Reviewed-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dan Rosenberg [Tue, 23 Nov 2010 11:02:13 +0000 (11:02 +0000)]
DECnet: don't leak uninitialized stack byte
commit
3c6f27bf33052ea6ba9d82369fb460726fb779c0 upstream.
A single uninitialized padding byte is leaked to userspace.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Steven J. Magnani [Wed, 24 Nov 2010 20:56:54 +0000 (12:56 -0800)]
nommu: yield CPU while disposing VM
commit
04c3496152394d17e3bc2316f9731ee3e8a026bc upstream.
Depending on processor speed, page size, and the amount of memory a
process is allowed to amass, cleanup of a large VM may freeze the system
for many seconds. This can result in a watchdog timeout.
Make sure other tasks receive some service when cleaning up large VMs.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Cc: Greg Ungerer <gerg@snapgear.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@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>
Uwe Kleine-König [Wed, 24 Nov 2010 20:57:14 +0000 (12:57 -0800)]
backlight: grab ops_lock before testing bd->ops
commit
d1d73578e053b981c3611e5a211534290d24a5eb upstream.
According to the comment describing ops_lock in the definition of struct
backlight_device and when comparing with other functions in backlight.c
the mutex must be hold when checking ops to be non-NULL.
Fixes a problem added by
c835ee7f4154992e6 ("backlight: Add suspend/resume
support to the backlight core") in Jan 2009.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Richard Purdie <rpurdie@linux.intel.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>
Will Newton [Wed, 24 Nov 2010 20:56:55 +0000 (12:56 -0800)]
uml: disable winch irq before freeing handler data
commit
69e83dad5207f8f03c9699e57e1febb114383cb8 upstream.
Disable the winch irq early to make sure we don't take an interrupt part
way through the freeing of the handler data, resulting in a crash on
shutdown:
winch_interrupt : read failed, errno = 9
fd 13 is losing SIGWINCH support
------------[ cut here ]------------
WARNING: at lib/list_debug.c:48 list_del+0xc6/0x100()
list_del corruption, next is LIST_POISON1 (
00100100)
082578c8: [<
081fd77f>] dump_stack+0x22/0x24
082578e0: [<
0807a18a>] warn_slowpath_common+0x5a/0x80
08257908: [<
0807a23e>] warn_slowpath_fmt+0x2e/0x30
08257920: [<
08172196>] list_del+0xc6/0x100
08257940: [<
08060244>] free_winch+0x14/0x80
08257958: [<
080606fb>] winch_interrupt+0xdb/0xe0
08257978: [<
080a65b5>] handle_IRQ_event+0x35/0xe0
08257998: [<
080a8717>] handle_edge_irq+0xb7/0x170
082579bc: [<
08059bc4>] do_IRQ+0x34/0x50
082579d4: [<
08059e1b>] sigio_handler+0x5b/0x80
082579ec: [<
0806a374>] sig_handler_common+0x44/0xb0
08257a68: [<
0806a538>] sig_handler+0x38/0x50
08257a78: [<
0806a77c>] handle_signal+0x5c/0xa0
08257a9c: [<
0806be28>] hard_handler+0x18/0x20
08257aac: [<
00c14400>] 0xc14400
Signed-off-by: Will Newton <will.newton@gmail.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Jeff Dike <jdike@addtoit.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>
Nelson Elhage [Thu, 2 Dec 2010 22:31:21 +0000 (14:31 -0800)]
do_exit(): make sure that we run with get_fs() == USER_DS
commit
33dd94ae1ccbfb7bf0fb6c692bc3d1c4269e6177 upstream.
If a user manages to trigger an oops with fs set to KERNEL_DS, fs is not
otherwise reset before do_exit(). do_exit may later (via mm_release in
fork.c) do a put_user to a user-controlled address, potentially allowing
a user to leverage an oops into a controlled write into kernel memory.
This is only triggerable in the presence of another bug, but this
potentially turns a lot of DoS bugs into privilege escalations, so it's
worth fixing. I have proof-of-concept code which uses this bug along
with CVE-2010-3849 to write a zero to an arbitrary kernel address, so
I've tested that this is not theoretical.
A more logical place to put this fix might be when we know an oops has
occurred, before we call do_exit(), but that would involve changing
every architecture, in multiple places.
Let's just stick it in do_exit instead.
[akpm@linux-foundation.org: update code comment]
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@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>
Ken Sumrall [Wed, 24 Nov 2010 20:57:00 +0000 (12:57 -0800)]
fuse: fix attributes after open(O_TRUNC)
commit
a0822c55779d9319939eac69f00bb729ea9d23da upstream.
The attribute cache for a file was not being cleared when a file is opened
with O_TRUNC.
If the filesystem's open operation truncates the file ("atomic_o_trunc"
feature flag is set) then the kernel should invalidate the cached st_mtime
and st_ctime attributes.
Also i_size should be explicitly be set to zero as it is used sometimes
without refreshing the cache.
Signed-off-by: Ken Sumrall <ksumrall@android.com>
Cc: Anfei <anfei.zhou@gmail.com>
Cc: "Anand V. Avati" <avati@gluster.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
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>
Len Brown [Tue, 28 Sep 2010 21:51:51 +0000 (17:51 -0400)]
ACPI: EC: add Vista incompatibility DMI entry for Toshiba Satellite L355
commit
7a1d602f5fc35d14907b7da98d5627acb69589d1 upstream.
https://bugzilla.kernel.org/show_bug.cgi?id=12641
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Zhang Rui [Tue, 12 Oct 2010 01:09:37 +0000 (09:09 +0800)]
acpi-cpufreq: fix a memleak when unloading driver
commit
dab5fff14df2cd16eb1ad4c02e83915e1063fece upstream.
We didn't free per_cpu(acfreq_data, cpu)->freq_table
when acpi_freq driver is unloaded.
Resulting in the following messages in /sys/kernel/debug/kmemleak:
unreferenced object 0xf6450e80 (size 64):
comm "modprobe", pid 1066, jiffies
4294677317 (age 19290.453s)
hex dump (first 32 bytes):
00 00 00 00 e8 a2 24 00 01 00 00 00 00 9f 24 00 ......$.......$.
02 00 00 00 00 6a 18 00 03 00 00 00 00 35 0c 00 .....j.......5..
backtrace:
[<
c123ba97>] kmemleak_alloc+0x27/0x50
[<
c109f96f>] __kmalloc+0xcf/0x110
[<
f9da97ee>] acpi_cpufreq_cpu_init+0x1ee/0x4e4 [acpi_cpufreq]
[<
c11cd8d2>] cpufreq_add_dev+0x142/0x3a0
[<
c11920b7>] sysdev_driver_register+0x97/0x110
[<
c11cce56>] cpufreq_register_driver+0x86/0x140
[<
f9dad080>] 0xf9dad080
[<
c1001130>] do_one_initcall+0x30/0x160
[<
c10626e9>] sys_init_module+0x99/0x1e0
[<
c1002d97>] sysenter_do_call+0x12/0x26
[<
ffffffff>] 0xffffffff
https://bugzilla.kernel.org/show_bug.cgi?id=15807#c21
Tested-by: Toralf Forster <toralf.foerster@gmx.de>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jacques Viviers [Wed, 24 Nov 2010 09:56:38 +0000 (11:56 +0200)]
USB: serial: ftdi_sio: Vardaan USB RS422/485 converter PID added
commit
6fdbad8021151a9e93af8159a6232c8f26415c09 upstream.
Add the PID for the Vardaan Enterprises VEUSB422R3 USB to RS422/485
converter. It uses the same chip as the FTDI_8U232AM_PID 0x6001.
This should also work with the stable branches for:
2.6.31, 2.6.32, 2.6.33, 2.6.34, 2.6.35, 2.6.36
Signed-off-by: Jacques Viviers <jacques.viviers@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Michael Stuermer [Wed, 17 Nov 2010 23:45:43 +0000 (00:45 +0100)]
USB: ftdi_sio: Add ID for RT Systems USB-29B radio cable
commit
28942bb6a9dd4e2ed793675e515cfb8297ed355b upstream.
Another variant of the RT Systems programming cable for ham radios.
Signed-off-by: Michael Stuermer <ms@mallorn.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 15 Nov 2010 19:36:44 +0000 (11:36 -0800)]
USB: misc: usbsevseg: fix up some sysfs attribute permissions
commit
e24d7ace4e822debcb78386bf279c9aba4d7fbd1 upstream.
They should not be writable by any user.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Harrison Metzger <harrisonmetz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 15 Nov 2010 19:34:26 +0000 (11:34 -0800)]
USB: misc: trancevibrator: fix up a sysfs attribute permission
commit
d489a4b3926bad571d404ca6508f6744b9602776 upstream.
It should not be writable by any user.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Sam Hocevar <sam@zoy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Johan Hovold [Sun, 12 Sep 2010 14:31:45 +0000 (16:31 +0200)]
USB: ftdi_sio: revert "USB: ftdi_sio: fix DTR/RTS line modes"
commit
677aeafe19e88c282af74564048243ccabb1c590 upstream.
This reverts commit
6a1a82df91fa0eb1cc76069a9efe5714d087eccd.
RTS and DTR should not be modified based on CRTSCTS when calling
set_termios.
Modem control lines are raised at port open by the tty layer and should stay
raised regardless of whether hardware flow control is enabled or not.
This is in conformance with the way serial ports work today and many
applications depend on this behaviour to be able to talk to hardware
implementing hardware flow control (without the applications actually using
it).
Hardware which expects different behaviour on these lines can always
use TIOCMSET/TIOCMBI[SC] after port open to change them.
Reported-by: Daniel Mack <daniel@caiaq.de>
Reported-by: Dave Mielke <dave@mielke.cc>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 15 Nov 2010 19:35:49 +0000 (11:35 -0800)]
USB: misc: usbled: fix up some sysfs attribute permissions
commit
48f115470e68d443436b76b22dad63ffbffd6b97 upstream.
They should not be writable by any user.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 15 Nov 2010 19:32:38 +0000 (11:32 -0800)]
USB: misc: cypress_cy7c63: fix up some sysfs attribute permissions
commit
c990600d340641150f7270470a64bd99a5c0b225 upstream.
They should not be writable by any user.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oliver Bock <bock@tfh-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 15 Nov 2010 19:11:45 +0000 (11:11 -0800)]
USB: atm: ueagle-atm: fix up some permissions on the sysfs files
commit
e502ac5e1eca99d7dc3f12b2a6780ccbca674858 upstream.
Some of the sysfs files had the incorrect permissions. Some didn't make
sense at all (writable for a file that you could not write to?)
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Damien Bergamini <damien.bergamini@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 15 Nov 2010 19:17:52 +0000 (11:17 -0800)]
USB: storage: sierra_ms: fix sysfs file attribute
commit
d9624e75f6ad94d8a0718c1fafa89186d271a78c upstream.
A non-writable sysfs file shouldn't have writable attributes.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Kevin Lloyd <klloyd@sierrawireless.com>
Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 16 Nov 2010 15:57:37 +0000 (10:57 -0500)]
USB: EHCI: fix obscure race in ehci_endpoint_disable
commit
02e2c51ba3e80acde600721ea784c3ef84da5ea1 upstream.
This patch (as1435) fixes an obscure and unlikely race in ehci-hcd.
When an async URB is unlinked, the corresponding QH is removed from
the async list. If the QH's endpoint is then disabled while the URB
is being given back, ehci_endpoint_disable() won't find the QH on the
async list, causing it to believe that the QH has been lost. This
will lead to a memory leak at best and quite possibly to an oops.
The solution is to trust usbcore not to lose track of endpoints. If
the QH isn't on the async list then it doesn't need to be taken off
the list, but the driver should still wait for the QH to become IDLE
before disabling it.
In theory this fixes Bugzilla #20182. In fact the race is so rare
that it's not possible to tell whether the bug is still present.
However, adding delays and making other changes to force the race
seems to show that the patch works.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Vasiliy Kulikov [Sat, 6 Nov 2010 14:41:28 +0000 (17:41 +0300)]
usb: core: fix information leak to userland
commit
886ccd4520064408ce5876cfe00554ce52ecf4a7 upstream.
Structure usbdevfs_connectinfo is copied to userland with padding byted
after "slow" field uninitialized. It leads to leaking of contents of
kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Vasiliy Kulikov [Sat, 6 Nov 2010 14:41:31 +0000 (17:41 +0300)]
usb: misc: iowarrior: fix information leak to userland
commit
eca67aaeebd6e5d22b0d991af1dd0424dc703bfb upstream.
Structure iowarrior_info is copied to userland with padding byted
between "serial" and "revision" fields uninitialized. It leads to
leaking of contents of kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Kees Cook <kees.cook@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Vasiliy Kulikov [Sat, 6 Nov 2010 14:41:35 +0000 (17:41 +0300)]
usb: misc: sisusbvga: fix information leak to userland
commit
5dc92cf1d0b4b0debbd2e333b83f9746c103533d upstream.
Structure sisusb_info is copied to userland with "sisusb_reserved" field
uninitialized. It leads to leaking of contents of kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ma rui [Mon, 1 Nov 2010 03:32:18 +0000 (11:32 +0800)]
USB: option: fix when the driver is loaded incorrectly for some Huawei devices.
commit
58c0d9d70109bd7e82bdb9517007311a48499960 upstream.
When huawei datacard with PID 0x14AC is insterted into Linux system, the
present kernel will load the "option" driver to all the interfaces. But
actually, some interfaces run as other function and do not need "option"
driver.
In this path, we modify the id_tables, when the PID is 0x14ac ,VID is
0x12d1, Only when the interface's Class is 0xff,Subclass is 0xff, Pro is
0xff, it does need "option" driver.
Signed-off-by: ma rui <m00150988@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sebastien Bourdeauducq [Wed, 3 Nov 2010 10:54:12 +0000 (11:54 +0100)]
USB: ftdi_sio: add device IDs for Milkymist One JTAG/serial
commit
7fea0f714ffb3f303d4b66933af2df2f5584c9bf upstream.
Add the USB IDs for the Milkymist One FTDI-based JTAG/serial adapter
(http://projects.qi-hardware.com/index.php/p/mmone-jtag-serial-cable/)
to the ftdi_sio driver and disable the first serial channel (used as
JTAG from userspace).
Signed-off-by: Sebastien Bourdeauducq <sebastien@milkymist.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Josh Wu [Tue, 16 Nov 2010 10:51:32 +0000 (11:51 +0100)]
USB: gadget: AT91: fix typo in atmel_usba_udc driver
commit
b48809518631880207796b4aab0fc39c2f036754 upstream.
compile fix for bug introduced by
969affff547027)
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Peter Jones [Wed, 22 Sep 2010 20:05:04 +0000 (13:05 -0700)]
efifb: check that the base address is plausible on pci systems
commit
85a00d9bbfb4704fbf368944b1cb9fed8f1598c5 upstream.
Some Apple machines have identical DMI data but different memory
configurations for the video. Given that, check that the address in our
table is actually within the range of a PCI BAR on a VGA device in the
machine.
This also fixes up the return value from set_system(), which has always
been wrong, but never resulted in bad behavior since there's only ever
been one matching entry in the dmi table.
The patch
1) stops people's machines from crashing when we get their display wrong,
which seems to be unfortunately inevitable,
2) allows us to support identical dmi data with differing video memory
configurations
This also adds me as the efifb maintainer, since I've effectively been
acting as such for quite some time.
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Darrick J. Wong [Tue, 16 Nov 2010 17:13:41 +0000 (09:13 -0800)]
PCI: fix offset check for sysfs mmapped files
commit
8c05cd08a7504b855c265263e84af61aabafa329 upstream.
I just loaded 2.6.37-rc2 on my machines, and I noticed that X no longer starts.
Running an strace of the X server shows that it's doing this:
open("/sys/bus/pci/devices/0000:07:00.0/resource0", O_RDWR) = 10
mmap(NULL,
16777216, PROT_READ|PROT_WRITE, MAP_SHARED, 10, 0) = -1 EINVAL (Invalid argument)
This code seems to be asking for a shared read/write mapping of 16MB worth of
BAR0 starting at file offset 0, and letting the kernel assign a starting
address. Unfortunately, this -EINVAL causes X not to start. Looking into
dmesg, there's a complaint like so:
process "Xorg" tried to map 0x01000000 bytes at page 0x00000000 on 0000:07:00.0 BAR 0 (start 0x
96000000, size 0x
1000000)
...with the following code in pci_mmap_fits:
pci_start = (mmap_api == PCI_MMAP_SYSFS) ?
pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0;
if (start >= pci_start && start < pci_start + size &&
start + nr <= pci_start + size)
It looks like the logic here is set up such that when the mmap call comes via
sysfs, the check in pci_mmap_fits wants vma->vm_pgoff to be between the
resource's start and end address, and the end of the vma to be no farther than
the end. However, the sysfs PCI resource files always start at offset zero,
which means that this test always fails for programs that mmap the sysfs files.
Given the comment in the original commit
3b519e4ea618b6943a82931630872907f9ac2c2b, I _think_ the old procfs files
require that the file offset be equal to the resource's base address when
mmapping.
I think what we want here is for pci_start to be 0 when mmap_api ==
PCI_MMAP_PROCFS. The following patch makes that change, after which the Matrox
and Mach64 X drivers work again.
Acked-by: Martin Wilck <martin.wilck@ts.fujitsu.com>
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Martin Wilck [Wed, 10 Nov 2010 10:03:21 +0000 (11:03 +0100)]
PCI: fix size checks for mmap() on /proc/bus/pci files
commit
3b519e4ea618b6943a82931630872907f9ac2c2b upstream.
The checks for valid mmaps of PCI resources made through /proc/bus/pci files
that were introduced in
9eff02e2042f96fb2aedd02e032eca1c5333d767 have several
problems:
1. mmap() calls on /proc/bus/pci files are made with real file offsets > 0,
whereas under /sys/bus/pci/devices, the start of the resource corresponds
to offset 0. This may lead to false negatives in pci_mmap_fits(), which
implicitly assumes the /sys/bus/pci/devices layout.
2. The loop in proc_bus_pci_mmap doesn't skip empty resouces. This leads
to false positives, because pci_mmap_fits() doesn't treat empty resources
correctly (the calculated size is 1 << (8*sizeof(resource_size_t)-PAGE_SHIFT)
in this case!).
3. If a user maps resources with BAR > 0, pci_mmap_fits will emit bogus
WARNINGS for the first resources that don't fit until the correct one is found.
On many controllers the first 2-4 BARs are used, and the others are empty.
In this case, an mmap attempt will first fail on the non-empty BARs
(including the "right" BAR because of 1.) and emit bogus WARNINGS because
of 3., and finally succeed on the first empty BAR because of 2.
This is certainly not the intended behaviour.
This patch addresses all 3 issues.
Updated with an enum type for the additional parameter for pci_mmap_fits().
Signed-off-by: Martin Wilck <martin.wilck@ts.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Tejun Heo [Mon, 1 Nov 2010 10:39:19 +0000 (11:39 +0100)]
libata: fix NULL sdev dereference race in atapi_qc_complete()
commit
2a5f07b5ec098edc69e05fdd2f35d3fbb1235723 upstream.
SCSI commands may be issued between __scsi_add_device() and dev->sdev
assignment, so it's unsafe for ata_qc_complete() to dereference
dev->sdev->locked without checking whether it's NULL or not. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Douglas Gilbert [Mon, 1 Feb 2010 18:11:38 +0000 (13:11 -0500)]
libata-scsi passthru: fix bug which truncated LBA48 return values
commit
bc496ed00ab1411d3efaf295b72e0c9eb343e1a3 upstream.
Fix assignment which overwrote SAT ATA PASS-THROUGH command EXTEND
bit setting (ATA_TFLAG_LBA48)
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: Kerin Millar <kerframil@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Francisco Jerez [Tue, 21 Sep 2010 00:15:15 +0000 (02:15 +0200)]
drm/ttm: Clear the ghost cpu_writers flag on ttm_buffer_object_transfer.
commit
0fbecd400dd0a82d465b3086f209681e8c54cb0f upstream.
It makes sense for a BO to move after a process has requested
exclusive RW access on it (e.g. because the BO used to be located in
unmappable VRAM and we intercepted the CPU access from the fault
handler).
If we let the ghost object inherit cpu_writers from the original
object, ttm_bo_release_list() will raise a kernel BUG when the ghost
object is destroyed. This can be reproduced with the nouveau driver on
nv5x.
Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Tested-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jens Axboe [Wed, 10 Nov 2010 13:36:25 +0000 (14:36 +0100)]
bio: take care not overflow page count when mapping/copying user data
commit
cb4644cac4a2797afc847e6c92736664d4b0ea34 upstream.
If the iovec is being set up in a way that causes uaddr + PAGE_SIZE
to overflow, we could end up attempting to map a huge number of
pages. Check for this invalid input type.
Reported-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dave Hansen [Thu, 11 Nov 2010 22:05:15 +0000 (14:05 -0800)]
mm/vfs: revalidate page->mapping in do_generic_file_read()
commit
8d056cb965b8fb7c53c564abf28b1962d1061cd3 upstream.
70 hours into some stress tests of a 2.6.32-based enterprise kernel, we
ran into a NULL dereference in here:
int block_is_partially_uptodate(struct page *page, read_descriptor_t *desc,
unsigned long from)
{
----> struct inode *inode = page->mapping->host;
It looks like page->mapping was the culprit. (xmon trace is below).
After closer examination, I realized that do_generic_file_read() does a
find_get_page(), and eventually locks the page before calling
block_is_partially_uptodate(). However, it doesn't revalidate the
page->mapping after the page is locked. So, there's a small window
between the find_get_page() and ->is_partially_uptodate() where the page
could get truncated and page->mapping cleared.
We _have_ a reference, so it can't get reclaimed, but it certainly
can be truncated.
I think the correct thing is to check page->mapping after the
trylock_page(), and jump out if it got truncated. This patch has been
running in the test environment for a month or so now, and we have not
seen this bug pop up again.
xmon info:
1f:mon> e
cpu 0x1f: Vector: 300 (Data Access) at [
c0000002ae36f770]
pc:
c0000000001e7a6c: .block_is_partially_uptodate+0xc/0x100
lr:
c000000000142944: .generic_file_aio_read+0x1e4/0x770
sp:
c0000002ae36f9f0
msr:
8000000000009032
dar: 0
dsisr:
40000000
current = 0xc000000378f99e30
paca = 0xc000000000f66300
pid = 21946, comm = bash
1f:mon> r
R00 =
0025c0500000006d R16 =
0000000000000000
R01 =
c0000002ae36f9f0 R17 =
c000000362cd3af0
R02 =
c000000000e8cd80 R18 =
ffffffffffffffff
R03 =
c0000000031d0f88 R19 =
0000000000000001
R04 =
c0000002ae36fa68 R20 =
c0000003bb97b8a0
R05 =
0000000000000000 R21 =
c0000002ae36fa68
R06 =
0000000000000000 R22 =
0000000000000000
R07 =
0000000000000001 R23 =
c0000002ae36fbb0
R08 =
0000000000000002 R24 =
0000000000000000
R09 =
0000000000000000 R25 =
c000000362cd3a80
R10 =
0000000000000000 R26 =
0000000000000002
R11 =
c0000000001e7b60 R27 =
0000000000000000
R12 =
0000000042000484 R28 =
0000000000000001
R13 =
c000000000f66300 R29 =
c0000003bb97b9b8
R14 =
0000000000000001 R30 =
c000000000e28a08
R15 =
000000000000ffff R31 =
c0000000031d0f88
pc =
c0000000001e7a6c .block_is_partially_uptodate+0xc/0x100
lr =
c000000000142944 .generic_file_aio_read+0x1e4/0x770
msr =
8000000000009032 cr =
22000488
ctr =
c0000000001e7a60 xer =
0000000020000000 trap = 300
dar =
0000000000000000 dsisr =
40000000
1f:mon> t
[link register ]
c000000000142944 .generic_file_aio_read+0x1e4/0x770
[
c0000002ae36f9f0]
c000000000142a14 .generic_file_aio_read+0x2b4/0x770 (unreliable)
[
c0000002ae36fb40]
c0000000001b03e4 .do_sync_read+0xd4/0x160
[
c0000002ae36fce0]
c0000000001b153c .vfs_read+0xec/0x1f0
[
c0000002ae36fd80]
c0000000001b1768 .SyS_read+0x58/0xb0
[
c0000002ae36fe30]
c00000000000852c syscall_exit+0x0/0x40
--- Exception: c00 (System Call) at
00000080a840bc54
SP (
fffca15df30) is in userspace
1f:mon> di
c0000000001e7a6c
c0000000001e7a6c e9290000 ld r9,0(r9)
c0000000001e7a70 418200c0 beq
c0000000001e7b30 # .block_is_partially_uptodate+0xd0/0x100
c0000000001e7a74 e9440008 ld r10,8(r4)
c0000000001e7a78 78a80020 clrldi r8,r5,32
c0000000001e7a7c 3c000001 lis r0,1
c0000000001e7a80 812900a8 lwz r9,168(r9)
c0000000001e7a84 39600001 li r11,1
c0000000001e7a88 7c080050 subf r0,r8,r0
c0000000001e7a8c 7f805040 cmplw cr7,r0,r10
c0000000001e7a90 7d6b4830 slw r11,r11,r9
c0000000001e7a94 796b0020 clrldi r11,r11,32
c0000000001e7a98 419d00a8 bgt cr7,
c0000000001e7b40 # .block_is_partially_uptodate+0xe0/0x100
c0000000001e7a9c 7fa55840 cmpld cr7,r5,r11
c0000000001e7aa0 7d004214 add r8,r0,r8
c0000000001e7aa4 79080020 clrldi r8,r8,32
c0000000001e7aa8 419c0078 blt cr7,
c0000000001e7b20 # .block_is_partially_uptodate+0xc0/0x100
Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: <arunabal@in.ibm.com>
Cc: <sbest@us.ibm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: 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>
Ken Chen [Thu, 11 Nov 2010 22:05:16 +0000 (14:05 -0800)]
latencytop: fix per task accumulator
commit
38715258aa2e8cd94bd4aafadc544e5104efd551 upstream.
Per task latencytop accumulator prematurely terminates due to erroneous
placement of latency_record_count. It should be incremented whenever a
new record is allocated instead of increment on every latencytop event.
Also fix search iterator to only search known record events instead of
blindly searching all pre-allocated space.
Signed-off-by: Ken Chen <kenchen@google.com>
Reviewed-by: Arjan van de Ven <arjan@infradead.org>
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>
Eric Dumazet [Thu, 28 Oct 2010 10:34:21 +0000 (12:34 +0200)]
netfilter: nf_conntrack: allow nf_ct_alloc_hashtable() to get highmem pages
commit
6b1686a71e3158d3c5f125260effce171cc7852b upstream.
commit
ea781f197d6a8 (use SLAB_DESTROY_BY_RCU and get rid of call_rcu())
did a mistake in __vmalloc() call in nf_ct_alloc_hashtable().
I forgot to add __GFP_HIGHMEM, so pages were taken from LOWMEM only.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Daniel T Chen [Thu, 2 Dec 2010 00:16:07 +0000 (19:16 -0500)]
ALSA: hda: Use "alienware" model quirk for another SSID
commit
0defe09ca70daccdc83abd9c3c24cd89ae6a1141 upstream.
BugLink: https://launchpad.net/bugs/683695
The original reporter states that headphone jacks do not appear to
work. Upon inspecting his codec dump, and upon further testing, it is
confirmed that the "alienware" model quirk is correct.
Reported-and-tested-by: Cody Thierauf
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Henningsson [Wed, 24 Nov 2010 13:17:47 +0000 (14:17 +0100)]
ALSA: HDA: Add an extra DAC for Realtek ALC887-VD
commit
cc1c452e509aefc28f7ad2deed75bc69d4f915f7 upstream.
The patch enables ALC887-VD to use the DAC at nid 0x26,
which makes it possible to use this DAC for e g Headphone
volume.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Daniel T Chen [Mon, 1 Nov 2010 05:14:51 +0000 (01:14 -0400)]
ALSA: ac97: Apply quirk for Dell Latitude D610 binding Master and Headphone controls
commit
0613a59456980161d0cd468bae6c63d772743102 upstream.
BugLink: https://launchpad.net/bugs/669279
The original reporter states: "The Master mixer does not change the
volume from the headphone output (which is affected by the headphone
mixer). Instead it only seems to control the on-board speaker volume.
This confuses PulseAudio greatly as the Master channel is merged into
the volume mix."
Fix this symptom by applying the hp_only quirk for the reporter's SSID.
The fix is applicable to all stable kernels.
Reported-and-tested-by: Ben Gamari <bgamari@gmail.com>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Clemens Ladisch [Mon, 25 Oct 2010 09:42:20 +0000 (11:42 +0200)]
firewire: ohci: fix race in AR split packet handling
commit
a1f805e5e73a8fe166b71c6592d3837df0cd5e2e upstream.
When handling an AR buffer that has been completely filled, we assumed
that its descriptor will not be read by the controller and can be
overwritten. However, when the last received packet happens to end at
the end of the buffer, the controller might not yet have moved on to the
next buffer and might read the branch address later. If we overwrite
and free the page before that, the DMA context will either go dead
because of an invalid Z value, or go off into some random memory.
To fix this, ensure that the descriptor does not get overwritten by
using only the actual buffer instead of the entire page for reassembling
the split packet. Furthermore, to avoid freeing the page too early,
move on to the next buffer only when some data in it guarantees that the
controller has moved on.
This should eliminate the remaining firewire-net problems.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Clemens Ladisch [Mon, 25 Oct 2010 09:41:53 +0000 (11:41 +0200)]
firewire: ohci: fix buffer overflow in AR split packet handling
commit
85f7ffd5d2b320f73912b15fe8cef34bae297daf upstream.
When the controller had to split a received asynchronous packet into two
buffers, the driver tries to reassemble it by copying both parts into
the first page. However, if size + rest > PAGE_SIZE, i.e., if the yet
unhandled packets before the split packet, the split packet itself, and
any received packets after the split packet are together larger than one
page, then the memory after the first page would get overwritten.
To fix this, do not try to copy the data of all unhandled packets at
once, but copy the possibly needed data every time when handling
a packet.
This gets rid of most of the infamous crashes and data corruptions when
using firewire-net.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Stefan Richter [Fri, 19 Feb 2010 20:00:02 +0000 (21:00 +0100)]
firewire: core: fix an information leak
commit
137d9ebfdbaa45c01f9f0f6d5121ae6f1eb942bd upstream.
If a device exposes a sparsely populated configuration ROM,
firewire-core's sysfs interface and character device file interface
showed random data in the gaps between config ROM blocks. Fix this by
zero-initialization of the config ROM reader's scratch buffer.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Stefan Richter [Wed, 7 Apr 2010 06:30:50 +0000 (08:30 +0200)]
firewire: cdev: fix information leak
commit
9cac00b8f0079d5d3d54ec4dae453d58dec30e7c upstream.
A userspace client got to see uninitialized stack-allocated memory if it
specified an _IOC_READ type of ioctl and an argument size larger than
expected by firewire-core's ioctl handlers (but not larger than the
core's union ioctl_arg).
Fix this by clearing the requested buffer size to zero, but only at _IOR
ioctls. This way, there is almost no runtime penalty to legitimate
ioctls. The only legitimate _IOR is FW_CDEV_IOC_GET_CYCLE_TIMER with 12
or 16 bytes to memset.
[Another way to fix this would be strict checking of argument size (and
possibly direction) vs. command number. However, we then need a lookup
table, and we need to allow for slight size deviations in case of 32bit
userland on 64bit kernel.]
Reported-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
[ Backported to 2.6.32 firewire core -maks ]
Signed-off-by: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ben Hutchings [Mon, 29 Nov 2010 15:00:15 +0000 (13:00 -0200)]
KVM: VMX: Fix host userspace gsbase corruption
commit
c8770e7ba63bb5dd8fe5f9d251275a8fa717fb78 upstream.
We now use load_gs_index() to load gs safely; unfortunately this also
changes MSR_KERNEL_GS_BASE, which we managed separately. This resulted
in confusion and breakage running 32-bit host userspace on a 64-bit kernel.
Fix by
- saving guest MSR_KERNEL_GS_BASE before we we reload the host's gs
- doing the host save/load unconditionally, instead of only when in guest
long mode
Things can be cleaned up further, but this is the minmal fix for now.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Vasiliy Kulikov [Mon, 29 Nov 2010 15:00:14 +0000 (13:00 -0200)]
KVM: x86: fix information leak to userland
commit
97e69aa62f8b5d338d6cff49be09e37cc1262838 upstream.
Structures kvm_vcpu_events, kvm_debugregs, kvm_pit_state2 and
kvm_clock_data are copied to userland with some padding and reserved
fields unitialized. It leads to leaking of contents of kernel stack
memory. We have to initialize them to zero.
In patch v1 Jan Kiszka suggested to fill reserved fields with zeros
instead of memset'ting the whole struct. It makes sense as these
fields are explicitly marked as padding. No more fields need zeroing.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Gleb Natapov [Wed, 10 Nov 2010 10:08:12 +0000 (12:08 +0200)]
KVM: VMX: fix vmx null pointer dereference on debug register access
There is a bug in KVM that can be used to crash a host on Intel
machines. If emulator is tricked into emulating mov to/from DR instruction
it causes NULL pointer dereference on VMX since kvm_x86_ops->(set|get)_dr
are not initialized. Recently this is not exploitable from guest
userspace, but malicious guest kernel can trigger it easily.
CVE-2010-0435
On upstream bug was fixed differently around 2.6.34.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jiri Slaby [Wed, 24 Nov 2010 23:27:54 +0000 (00:27 +0100)]
TTY: ldisc, fix open flag handling
commit
7f90cfc505d613f4faf096e0d84ffe99208057d9 upstream.
When a concrete ldisc open fails in tty_ldisc_open, we forget to clear
TTY_LDISC_OPEN. This causes a false warning on the next ldisc open:
WARNING: at drivers/char/tty_ldisc.c:445 tty_ldisc_open+0x26/0x38()
Hardware name: System Product Name
Modules linked in: ...
Pid: 5251, comm: a.out Tainted: G W 2.6.32-5-686 #1
Call Trace:
[<
c1030321>] ? warn_slowpath_common+0x5e/0x8a
[<
c1030357>] ? warn_slowpath_null+0xa/0xc
[<
c119311c>] ? tty_ldisc_open+0x26/0x38
[<
c11936c5>] ? tty_set_ldisc+0x218/0x304
...
So clear the bit when failing...
Introduced in
c65c9bc3efa (tty: rewrite the ldisc locking) back in
2.6.31-rc1.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Reported-by: Sergey Lapin <slapin@ossfans.org>
Tested-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Philippe Rétornaz [Wed, 27 Oct 2010 15:13:21 +0000 (17:13 +0200)]
tty_ldisc: Fix BUG() on hangup
commit
1c95ba1e1de7edffc0c4e275e147f1a9eb1f81ae upstream.
A kernel BUG when bluetooth rfcomm connection drop while the associated
serial port is open is sometime triggered.
It seems that the line discipline can disappear between the
tty_ldisc_put and tty_ldisc_get. This patch fall back to the N_TTY line
discipline if the previous discipline is not available anymore.
Signed-off-by: Philippe Retornaz <philippe.retornaz@epfl.ch>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jiri Slaby [Sun, 31 Oct 2010 22:17:51 +0000 (23:17 +0100)]
TTY: restore tty_ldisc_wait_idle
commit
100eeae2c5ce23b4db93ff320ee330ef1d740151 upstream.
It was removed in
65b770468e98 (tty-ldisc: turn ldisc user count into
a proper refcount), but we need to wait for last user to quit the
ldisc before we close it in tty_set_ldisc.
Otherwise weird things start to happen. There might be processes
waiting in tty_read->n_tty_read on tty->read_wait for input to appear
and at that moment, a change of ldisc is fatal. n_tty_close is called,
it frees read_buf and the waiting process is still in the middle of
reading and goes nuts after it is woken.
Previously we prevented close to happen when others are in ldisc ops
by tty_ldisc_wait_idle in tty_set_ldisc. But the commit above removed
that. So revoke the change and test whether there is 1 user (=we), and
allow the close then.
We can do that without ldisc/tty locks, because nobody else can open
the device due to TTY_LDISC_CHANGING bit set, so we in fact wait for
everybody to leave.
I don't understand why tty_ldisc_lock would be needed either when the
counter is an atomic variable, so this is a lockless
tty_ldisc_wait_idle.
On the other hand, if we fail to wait (timeout or signal), we have to
reenable the halted ldiscs, so we take ldisc lock and reuse the setup
path at the end of tty_set_ldisc.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Sebastian Andrzej Siewior <bigeasy@breakpoint.cc>
LKML-Reference: <
20101031104136.GA511@Chamillionaire.breakpoint.cc>
LKML-Reference: <
1287669539-22644-1-git-send-email-jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jiri Olsa [Mon, 8 Nov 2010 18:01:47 +0000 (19:01 +0100)]
tty: prevent DOS in the flush_to_ldisc
commit
e045fec48970df84647a47930fcf7a22ff7229c0 upstream.
There's a small window inside the flush_to_ldisc function,
where the tty is unlocked and calling ldisc's receive_buf
function. If in this window new buffer is added to the tty,
the processing might never leave the flush_to_ldisc function.
This scenario will hog the cpu, causing other tty processing
starving, and making it impossible to interface the computer
via tty.
I was able to exploit this via pty interface by sending only
control characters to the master input, causing the flush_to_ldisc
to be scheduled, but never actually generate any output.
To reproduce, please run multiple instances of following code.
- SNIP
#define _XOPEN_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(int argc, char **argv)
{
int i, slave, master = getpt();
char buf[8192];
sprintf(buf, "%s", ptsname(master));
grantpt(master);
unlockpt(master);
slave = open(buf, O_RDWR);
if (slave < 0) {
perror("open slave failed");
return 1;
}
for(i = 0; i < sizeof(buf); i++)
buf[i] = rand() % 32;
while(1) {
write(master, buf, sizeof(buf));
}
return 0;
}
- SNIP
The attached patch (based on -next tree) fixes this by checking on the
tty buffer tail. Once it's reached, the current work is rescheduled
and another could run.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Prarit Bhargava [Thu, 12 Nov 2009 18:09:31 +0000 (13:09 -0500)]
x86: AMD Northbridge: Verify NB's node is online
commit
303fc0870f8fbfabe260c5c32b18e53458d597ea upstream.
Fix panic seen on some IBM and HP systems on 2.6.32-rc6:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
ffffffff8120bf3f>] find_next_bit+0x77/0x9c
[...]
[<
ffffffff8120bbde>] cpumask_next_and+0x2e/0x3b
[<
ffffffff81225c62>] pci_device_probe+0x8e/0xf5
[<
ffffffff812b9be6>] ? driver_sysfs_add+0x47/0x6c
[<
ffffffff812b9da5>] driver_probe_device+0xd9/0x1f9
[<
ffffffff812b9f1d>] __driver_attach+0x58/0x7c
[<
ffffffff812b9ec5>] ? __driver_attach+0x0/0x7c
[<
ffffffff812b9298>] bus_for_each_dev+0x54/0x89
[<
ffffffff812b9b4f>] driver_attach+0x19/0x1b
[<
ffffffff812b97ae>] bus_add_driver+0xd3/0x23d
[<
ffffffff812ba1e7>] driver_register+0x98/0x109
[<
ffffffff81225ed0>] __pci_register_driver+0x63/0xd3
[<
ffffffff81072776>] ? up_read+0x26/0x2a
[<
ffffffffa0081000>] ? k8temp_init+0x0/0x20 [k8temp]
[<
ffffffffa008101e>] k8temp_init+0x1e/0x20 [k8temp]
[<
ffffffff8100a073>] do_one_initcall+0x6d/0x185
[<
ffffffff8108d765>] sys_init_module+0xd3/0x236
[<
ffffffff81011ac2>] system_call_fastpath+0x16/0x1b
I put in a printk and commented out the set_dev_node()
call when and got this output:
quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x0
quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x1
quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x2
quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x3
I.e. the issue appears to be that the HW has set val to a valid
value, however, the system is only configured for a single
node -- 0, the others are offline.
Check to see if the node is actually online before setting
the numa node for an AMD northbridge in quirk_amd_nb_node().
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: bhavna.sarathy@amd.com
Cc: jbarnes@virtuousgeek.org
Cc: andreas.herrmann3@amd.com
LKML-Reference: <
20091112180933.12532.98685.sendpatchset@prarit.bos.redhat.com>
[ v2: clean up the code and add comments ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Justin Maggard [Wed, 24 Nov 2010 05:36:17 +0000 (16:36 +1100)]
md: fix return value of rdev_size_change()
commit
c26a44ed1e552aaa1d4ceb71842002d235fe98d7 upstream.
When trying to grow an array by enlarging component devices,
rdev_size_store() expects the return value of rdev_size_change() to be
in sectors, but the actual value is returned in KBs.
This functionality was broken by commit
dd8ac336c13fd8afdb082ebacb1cddd5cf727889
so this patch is suitable for any kernel since 2.6.30.
Signed-off-by: Justin Maggard <jmaggard10@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
NeilBrown [Wed, 24 Nov 2010 05:39:46 +0000 (16:39 +1100)]
md/raid1: really fix recovery looping when single good device fails.
commit
8f9e0ee38f75d4740daa9e42c8af628d33d19a02 upstream.
Commit
4044ba58dd15cb01797c4fd034f39ef4a75f7cc3 supposedly fixed a
problem where if a raid1 with just one good device gets a read-error
during recovery, the recovery would abort and immediately restart in
an infinite loop.
However it depended on raid1_remove_disk removing the spare device
from the array. But that does not happen in this case. So add a test
so that in the 'recovery_disabled' case, the device will be removed.
This suitable for any kernel since 2.6.29 which is when
recovery_disabled was introduced.
Reported-by: Sebastian Färber <faerber@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Tyler Hicks [Thu, 23 Sep 2010 07:35:04 +0000 (02:35 -0500)]
eCryptfs: Clear LOOKUP_OPEN flag when creating lower file
commit
2e21b3f124eceb6ab5a07c8a061adce14ac94e14 upstream.
eCryptfs was passing the LOOKUP_OPEN flag through to the lower file
system, even though ecryptfs_create() doesn't support the flag. A valid
filp for the lower filesystem could be returned in the nameidata if the
lower file system's create() function supported LOOKUP_OPEN, possibly
resulting in unencrypted writes to the lower file.
However, this is only a potential problem in filesystems (FUSE, NFS,
CIFS, CEPH, 9p) that eCryptfs isn't known to support today.
https://bugs.launchpad.net/ecryptfs/+bug/641703
Reported-by: Kevin Buhr
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>