SLUB: support slub_debug on by defaultAdd a new configuration variable
CONFIG_SLUB_DEBUG_ON
If set then the kernel will be booted by default with slab debugging
switched on. Similar to CONFIG_SLAB_DEBUG. By default slab debugging
is available but must be enabled by specifying "slub_debug" as a
kernel parameter.
Also add support to switch off slab debugging for a kernel that was
built with CONFIG_SLUB_DEBUG_ON. This works by spec...
CFQ: use correct cfq_bc in cfq_del_cfqq_rr()If ->active_cfq_bc is NULL there for some reason, we won't delete cfq queue
from service tree and silently return. It will also have no pending requests.
Next time someone will find this queue in service tree and try to dispatch from
there, BUG_ON in __cfq_dispatch_requests() will trigger. The solution is to use
cfq_bc from queue itself.
CFQ: use bc_findcreate_cfq_bc() in cfq_get_queue()If bc_find_cfq_bc() for whatever reason can't find cfq_bc kernel will oops
later trying do dereference it while checking for async queue. Use find_create
counterpart and that's what 2.6.20 did.
addrconf_dad_failure calls addrconf_dad_stop which takes referenced addressand drops the count. So, in6_ifa_put perrformed at out: is extra. This
results in message: "Freeing alive inet6 address" and not released dst entries.
CFQ: use correct cfq_bc in cfq_service_tree_add()That's what 2.6.20 did. Bailout was also totally wrong -- ->active_cfq_bc is
NULL at this point resulting in no queues inserted into service tree. No queues
in service tree means no dispatched requests to device.
usb: add PRODUCT, TYPE to usb-interface eventsThis fixes a regression for userspace programs that were relying on these events.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Andreas Jellinghaus <aj@ciphirelabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: fix DoS in pwc USB video driverthe pwc driver has a disconnect method that waits for user space to
close the device. This opens up an opportunity for a DoS attack,
blocking the USB subsystem and making khubd's task busy wait in
kernel space. This patch shifts freeing resources to close if an opened
device is disconnected.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
USB: allow retry on descriptor fetch errorsThis patch (as964) was suggested by Steffen Koepf. It makes
usb_get_descriptor() retry on all errors other than ETIMEDOUT, instead
of only on EPIPE. This helps with some devices.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PCI: disable MSI on RX790RX790 can't do MSI like its predecessors. Disable MSI on RX790.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PCI: disable MSI on RD580RD580 can't do MSI like its predecessors. Disable MSI on RD580.
Signed-off-by: Tejun Heo <teheo@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PCI: disable MSI on RS690RS690 can't do MSI like its predecessors. Disable MSI on RS690.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Henry Su <henry.su@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PCI: lets kill the 'PCI hidden behind bridge' messageAdrian Bunk wrote:
> Alois Nešpor wrote
>> PCI: Bus #0b (-#0e) is hidden behind transparent bridge #0a (-#0b) (try 'pci=assign-busses')
>> Please report the result to linux-kernel to fix this permanently"
>>
>> dmesg:
>> "Yenta: Raising subordinate bus# of parent bus (#0a) from #0b to #0e"
>> without pci=assign-busses and nothing with pci=assign-busses.
>
> Bernhard?
Ok, lets kill the message...
PPP: Fix PPP buffer sizing.This patch addresses the issue with "osize too small" errors in mppe
encryption. The patch fixes the issue with wrong output buffer size
being passed to ppp decompression routine.
--------------------
As pointed out by Suresh Mahalingam, the issue addressed by
ppp-fix-osize-too-small-errors-when-decoding patch is not fully resolved yet.
The size of allocated output buffer is correct, however ...
TCP: Fix TCP handling of SACK in bidirectional flows.It's possible that new SACK blocks that should trigger new LOST
markings arrive with new data (which previously made is_dupack
false). In addition, I think this fixes a case where we get
a cumulative ACK with enough SACK blocks to trigger the fast
recovery (is_dupack would be false there too).
I'm not completely pleased with this solution because readability
of the code is somewhat questionabl...
TCP: Fix TCP rate-halving on bidirectional flows.Actually, the ratehalving seems to work too well, as cwnd is
reduced on every second ACK even though the packets in flight
remains unchanged. Recoveries in a bidirectional flows suffer
quite badly because of this, both NewReno and SACK are affected.
After this patch, rate halving is performed for ACK only if
packets in flight was supposedly changed too.
Signed-off-by: Ilpo Järvinen <ilpo.jarv...
TCP: Do not autobind ports for TCP sockets[TCP]: Invoke tcp_sendmsg() directly, do not use inet_sendmsg().
As discovered by Evegniy Polyakov, if we try to sendmsg after
a connection reset, we can do incredibly stupid things.
The core issue is that inet_sendmsg() tries to autobind the
socket, but we should never do that for TCP. Instead we should
just go straight into TCP's sendmsg() code which will do all
of the necessary state and ...
SPARC64: Fix sparc64 PCI config accesses on sun4u[SPARC64]: Fix sun4u PCI config space accesses on sun4u.
Don't provide fake PCI config space for sun4u.
Also, put back the funny host controller space handling that
at least Sabre needs. You have to read PCI host controller
registers at their nature size otherwise you get zeros instead
of correct values.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman ...
SPARC64: Fix sparc64 task stack traces.It didn't handle that case at all, and now dump_stack()
can be implemented directly as show_stack(current, NULL)
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
NET: Fix missing rcu unlock in __sock_create()[NET]: Fix unbalanced rcu_read_unlock in __sock_create
The recent RCU work created an unbalanced rcu_read_unlock
in __sock_create. This patch fixes that. Reported by
oleg 123.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
SNAP: Fix SNAP protocol header accesses.The snap_rcv code reads 5 bytes so we should make sure that
we have 5 bytes in the head before proceeding.
Based on diagnosis and fix by Evgeniy Polyakov, reported by
Alan J. Wylie.
Patch also kills the skb->sk assignment before kfree_skb
since it's redundant.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroa...
Netfilter: Missing Kbuild entry for netfilterAuthor: Chuck Ebbert <cebbert@redhat.com>
Add xt_statistic.h to the list of headers to install.
Apparently needed to build newer versions of iptables.
Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix soft-fp underflow handling.The underflow exception cases were wrong.
This is one weird area of ieee1754 handling in that the underflow
behavior changes based upon whether underflow is enabled in the trap
enable mask of the FPU control register. As a specific case the Sparc
V9 manual gives us the following description:
--------------------
If UFM = 0: Underflow occurs if a nonzero result is tiny and a
...
IPv6: Invalid semicolon after if statementAuthor: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
A similar fix to netfilter from Eric Dumazet inspired me to
look around a bit by using some grep/sed stuff as looking for
this kind of bugs seemed easy to automate. This is one of them
I found where it looks like this semicolon is not valid.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemlof...
IPV6: Fix kernel panic while send SCTP data with IP fragmentsIf ICMP6 message with "Packet Too Big" is received after send SCTP DATA,
kernel panic will occur when SCTP DATA is send again.
This is because of a bad dest address when call to skb_copy_bits().
The messages sequence is like this:
Endpoint A Endpoint B
<------- SCTP DATA (size=1432)
ICMP6 message ------->
(Packet Too Big pmtu=1280)
...
signalfd: make it group-wide, fix posix-timers schedulingWith this patch any thread can dequeue its own private signals via signalfd,
even if it was created by another sub-thread.
To do so, we pass "current" to dequeue_signal() if the caller is from the same
thread group. This also fixes the scheduling of posix timers broken by the
previous patch.
If the caller doesn't belong to this thread group, we can't handle __SI_TIMER
case properly anyway. Pe...
signalfd: fix interaction with posix-timersdequeue_signal:
if (__SI_TIMER) {
spin_unlock(&tsk->sighand->siglock);
do_schedule_next_timer(info);
spin_lock(&tsk->sighand->siglock);
}
Unless tsk == curent, this is absolutely unsafe: nothing prevents tsk from
exiting. If signalfd was passed to another process, do_schedule_next_timer()
is just wrong.
Add yet another "tsk == current" check into dequeue_signal().
This patch fixes a...
i386: fix lazy mode vmalloc synchronization for paravirtFound this looping Ubuntu installs with VMI.
If unlucky enough to hit a vmalloc sync fault during a lazy mode
operation (from an IRQ handler for a module which was not yet populated
in current page directory, or from inside copy_one_pte, which touches
swap_map, and hit in an unused 4M region), the required PDE update would
never get flushed, causing an infinite page fault loop.
This bug affec...
uml: fix previous request size limit fixThe previous patch which limited the number of sectors in a single request
to a COWed device was correct in concept, but the limit was implemented in
the wrong place.
By putting it in ubd_add, it covered the cases where the COWing was
specified on the command line. However, when the command line only has the
COW file specified, the fact that it's a COW file isn't known until it's
opened, so t...
sky2: don't clear phy power bitsThere are special PHY settings available on Yukon EC-U chip that
should not get cleared. This should solve mysterious errors on some
motherboards (like Gigabyte DS-3).
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
NET: Share correct feature code between bridging and bonding[NET]: Share correct feature code between bridging and bonding
http://bugzilla.kernel.org/show_bug.cgi?id=8797 shows that the
bonding driver may produce bogus combinations of the checksum
flags and SG/TSO.
For example, if you bond devices with NETIF_F_HW_CSUM and
NETIF_F_IP_CSUM you'll end up with a bonding device that
has neither flag set. If both have TSO then this produces
an illegal comb...
ocfs2: Fix bad source start calculation during kernel writes[PATCH] ocfs2: Fix bad source start calculation during kernel writes
For in-kernel writes ocfs2_get_write_source() should be starting the buffer
at a page boundary as the math in ocfs2_map_and_write_user_data() will pad
it back out to the correct write offset. Instead, we were passing the raw
offset, which caused ocfs2_map_and_write_user_data() start too far into the
buffer, resulting in corru...
Turn off dcache accounting optimizationWith SLUB, page fully filled with objects is not in needed lists, so dcache
walking will find and account dentries only in partial pages.
When a task enters VE it doesn't become the init's children and thus zap_pid_ns_processes() may skip it during the namespace termination.These tasks are to be handled specially. However, we should distinguish
entered tasks from those, that were forgotten during the namespace
termination.
Wire up CONFIG_NO_HZ=yWe choose dummy select_nohz_load_balancer() like in UP or usual HZ case. Logic
here looks strange for VCPU case and needs much more thinking.
For now, just make sure timer interrupts tick way less often than 1000 Hz in
default config.
Fix d_root_check() vs pipefs empty dentries interactionIn mainline pipe dentries were made empty "" and ->d_dname() method is called
which can't tolerate NULL buffer passed to it by d_root_check()
Bug #89197
Zap entered into VE tasks before resetting ns reaper.Tasks that appear in VE with vzctl enter/exec do not
belong to the namespace's process tree and thus init
won't wait them in zap_ns_processes. This may cause a
race that these tasks will die after resetting the reaper
and the reparenting will oops. So kill them after the
regular killer and besides kill the lost tasks.
More correctly it should check for tasks that had
to but were not killed by ...
JFFS2 locking regression fix.Commit a491486a2087ac3dfc00efb4f838c8d684afaf54 introduced a locking
problem in JFFS2 -- we up() the alloc_sem when we weren't previously
holding it. This leads to all kinds of fun behaviour later.
There was a _reason_ for the
if (1 /* alternative path needs testing */ ||
which the above-mentioned commit removed :)
Discovered and debugged by Giulio Fedel <giulio.fedel@andorsystems.com>
Sign...
i386: Fix double fault handlerThe new percpu code has apparently broken the doublefault handler
when CONFIG_DEBUG_SPINLOCK is set. Doublefault is handled by
a hardware task, making the check
SPIN_BUG_ON(lock->owner == current, lock, "recursion");
fault because it uses the FS register to access the percpu data
for current, and that register is zero in the new TSS. (The trace
I saw was on 2.6.20 where it was GS, but...
OpenVZ team
Christoph Lameter
Alexey Dobriyan
Denis V. Lunev
Kir Kolyshkin
Greg Kroah-Hartman
Kay Sievers
Oliver Neukum
Alan Stern
Tejun Heo
Bernhard Kaindl
Konstantin Sharlaimov
Ilpo Järvinen
David Miller
Herbert Xu
Chuck Ebbert
Wei Yongjun
Gerrit Renker
Oleg Nesterov
Zachary Amsden
Jeff Dike
Stephen Hemminger
Mark Fasheh
Pavel Emelianov
David Woodhouse