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Pablo Neira [Tue, 13 Oct 2015 10:47:48 +0000 (12:47 +0200)]
netfilter: nfnetlink_log: validate dependencies to avoid breaking atomicity
Check that dependencies are fulfilled before updating the logger
instance, otherwise we can leave things in intermediate state on errors
in nfulnl_recv_config().
[ Ken-ichirou reports that this is also fixing missing instance refcnt drop
on error introduced in his patch
914eebf2f434 ("netfilter: nfnetlink_log:
autoload nf_conntrack_netlink module NFQA_CFG_F_CONNTRACK config flag"). ]
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Tested-by: Ken-ichirou MATSUZAWA <chamaken@gmail.com>
Pablo Neira Ayuso [Tue, 13 Oct 2015 10:47:47 +0000 (12:47 +0200)]
netfilter: nfnetlink_log: consolidate check for instance in nfulnl_recv_config()
This patch consolidates the check for valid logger instance once we have
passed the command handling:
The config message that we receive may contain the following info:
1) Command only: We always get a valid instance pointer if we just
created it. In case that the instance is being destroyed or the
command is unknown, we jump to exit path of nfulnl_recv_config().
This patch doesn't modify this handling.
2) Config only: In this case, the instance must always exist since the
user is asking for configuration updates. If the instance doesn't exist
this returns -ENODEV.
3) No command and no configs are specified: This case is rare. The
user is sending us a config message with neither commands nor
config options. In this case, we have to check if the instance exists
and bail out otherwise. Before this patch, it was possible to send a
config message with no command and no config updates for an
unexisting instance without triggering an error. So this is the only
case that changes.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Tested-by: Ken-ichirou MATSUZAWA <chamaken@gmail.com>
Ian Morris [Sun, 11 Oct 2015 16:32:20 +0000 (17:32 +0100)]
netfilter: ipv6: pointer cast layout
Correct whitespace layout of a pointer casting.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Morris [Sun, 11 Oct 2015 16:32:19 +0000 (17:32 +0100)]
netfilter: ip6_tables: improve if statements
Correct whitespace layout of if statements.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Morris [Sun, 11 Oct 2015 16:32:18 +0000 (17:32 +0100)]
netfilter: ip6_tables: ternary operator layout
Correct whitespace layout of ternary operators in the netfilter-ipv6
code.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Morris [Sun, 11 Oct 2015 16:32:17 +0000 (17:32 +0100)]
netfilter: ipv6: whitespace around operators
This patch cleanses whitespace around arithmetical operators.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Morris [Sun, 11 Oct 2015 16:32:16 +0000 (17:32 +0100)]
netfilter: ipv6: code indentation
Use tabs instead of spaces to indent code.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Morris [Sun, 11 Oct 2015 16:32:15 +0000 (17:32 +0100)]
netfilter: ip6_tables: function definition layout
Use tabs instead of spaces to indent second line of parameters in
function definitions.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ian Morris [Sun, 11 Oct 2015 16:32:14 +0000 (17:32 +0100)]
netfilter: ip6_tables: label placement
Whitespace cleansing: Labels should not be indented.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Florian Westphal [Fri, 9 Oct 2015 11:10:37 +0000 (13:10 +0200)]
netfilter: nfqueue: don't use prev pointer
Usage of -prev seems buggy. While packet was out our hook cannot be
removed but we have no way to know if the previous one is still valid.
So better not use ->prev at all. Since NF_REPEAT just asks to invoke
same hook function again, just do so, and continue with nf_interate
if we get an ACCEPT verdict.
A side effect of this change is that if nf_reinject(NF_REPEAT) causes
another REPEAT we will now drop the skb instead of a kernel loop.
However, NF_REPEAT loops would be a bug so this should not happen anyway.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ken-ichirou MATSUZAWA [Wed, 7 Oct 2015 04:25:50 +0000 (13:25 +0900)]
netfilter: nfnetlink_log: autoload nf_conntrack_netlink module NFQA_CFG_F_CONNTRACK config flag
This patch enables to load nf_conntrack_netlink module if
NFULNL_CFG_F_CONNTRACK config flag is specified.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Arnd Bergmann [Thu, 8 Oct 2015 12:30:15 +0000 (14:30 +0200)]
netfilter: bridge: avoid unused label warning
With the ARM mini2440_defconfig, the bridge netfilter code gets
built with both CONFIG_NF_DEFRAG_IPV4 and CONFIG_NF_DEFRAG_IPV6
disabled, which leads to a harmless gcc warning:
net/bridge/br_netfilter_hooks.c: In function 'br_nf_dev_queue_xmit':
net/bridge/br_netfilter_hooks.c:792:2: warning: label 'drop' defined but not used [-Wunused-label]
This gets rid of the warning by cleaning up the code to avoid
the respective #ifdefs causing this problem, and replacing them
with if(IS_ENABLED()) checks. I have verified that the resulting
object code is unchanged, and an additional advantage is that
we now get compile coverage of the unused functions in more
configurations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes:
dd302b59bde0 ("netfilter: bridge: don't leak skb in error paths")
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Mon, 12 Oct 2015 15:35:42 +0000 (17:35 +0200)]
Merge tag 'ipvs4-for-v4.4' of https://git./linux/kernel/git/horms/ipvs-next
Simon Horman says:
====================
Fourth Round of IPVS Updates for v4.4
please consider these build warning cleanups from David Ahern and myself.
They resolve some minor side effects of Eric Biederman' heroic work to
cleanup IPVS which you recently pulled: its queued up for v4.4 so no need
to worry about earlier kernel versions.
====================
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Mon, 5 Oct 2015 14:51:02 +0000 (16:51 +0200)]
nfnetlink_cttimeout: add rcu_barrier() on module removal
Make sure kfree_rcu() released objects before leaving the module removal
exit path.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Mon, 5 Oct 2015 14:51:01 +0000 (16:51 +0200)]
netfilter: conntrack: fix crash on timeout object removal
The object and module refcounts are updated for each conntrack template,
however, if we delete the iptables rules and we flush the timeout
database, we may end up with invalid references to timeout object that
are just gone.
Resolve this problem by setting the timeout reference to NULL when the
custom timeout entry is removed from our base. This patch requires some
RCU trickery to ensure safe pointer handling.
This handling is similar to what we already do with conntrack helpers,
the idea is to avoid bumping the timeout object reference counter from
the packet path to avoid the cost of atomic ops.
Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Mon, 5 Oct 2015 14:51:03 +0000 (16:51 +0200)]
netfilter: xt_CT: don't put back reference to timeout policy object
On success, this shouldn't put back the timeout policy object, otherwise
we may have module refcount overflow and we allow deletion of timeout
that are still in use.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Simon Horman [Tue, 6 Oct 2015 08:09:52 +0000 (17:09 +0900)]
ipvs: Remove possibly unused variables from ip_vs_conn_net_{init,cleanup}
If CONFIG_PROC_FS is undefined then the arguments of proc_create()
and remove_proc_entry() are unused. As a result the net variables of
ip_vs_conn_net_{init,cleanup} are unused.
net/netfilter/ipvs//ip_vs_conn.c: In function ‘ip_vs_conn_net_init’:
net/netfilter/ipvs//ip_vs_conn.c:1350:14: warning: unused variable ‘net’ [-Wunused-variable]
net/netfilter/ipvs//ip_vs_conn.c: In function ‘ip_vs_conn_net_cleanup’:
net/netfilter/ipvs//ip_vs_conn.c:1361:14: warning: unused variable ‘net’ [-Wunused-variable]
...
Resolve this by dereferencing net as needed rather than storing it
in a variable.
Fixes:
3d99376689ee ("ipvs: Pass ipvs not net into ip_vs_control_net_(init|cleanup)")
Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Julian Anastasov <ja@ssi.bg>
David Ahern [Thu, 1 Oct 2015 15:49:04 +0000 (08:49 -0700)]
ipvs: Remove possibly unused variable from ip_vs_out
Eric's net namespace changes in
1b75097dd7a26 leaves net unreferenced if
CONFIG_IP_VS_IPV6 is not enabled:
../net/netfilter/ipvs/ip_vs_core.c: In function ‘ip_vs_out’:
../net/netfilter/ipvs/ip_vs_core.c:1177:14: warning: unused variable ‘net’ [-Wunused-variable]
After the net refactoring there is only 1 user; push the reference to the
1 user. While the line length slightly exceeds 80 it seems to be the
best change.
Fixes:
1b75097dd7a26("ipvs: Pass ipvs into ip_vs_out")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
[horms: updated subject]
Signed-off-by: Simon Horman <horms@verge.net.au>
Ken-ichirou MATSUZAWA [Mon, 5 Oct 2015 02:50:46 +0000 (11:50 +0900)]
netfilter: nfnetlink_log: allow to attach conntrack
This patch enables to include the conntrack information together
with the packet that is sent to user-space via NFLOG, then a
user-space program can acquire NATed information by this NFULA_CT
attribute.
Including the conntrack information is optional, you can set it
via NFULNL_CFG_F_CONNTRACK flag with the NFULA_CFG_FLAGS attribute
like NFQUEUE.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ken-ichirou MATSUZAWA [Mon, 5 Oct 2015 02:49:56 +0000 (11:49 +0900)]
netfilter: ctnetlink: add const qualifier to nfnl_hook.get_ct
get_ct as is and will not update its skb argument, and users of
nfnl_ct_hook is currently only nfqueue, we can add const qualifier.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Ken-ichirou MATSUZAWA [Mon, 5 Oct 2015 02:48:47 +0000 (11:48 +0900)]
netfilter: Kconfig rename QUEUE_CT to GLUE_CT
Conntrack information attaching infrastructure is now generic and
update it's name to use `glue' in previous patch. This patch updates
Kconfig symbol name and adding NF_CT_NETLINK dependency.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Ken-ichirou MATSUZAWA [Mon, 5 Oct 2015 02:47:13 +0000 (11:47 +0900)]
netfilter: nfnetlink_queue: rename related to nfqueue attaching conntrack info
The idea of this series of patch is to attach conntrack information to
nflog like nfqueue has already done. nfqueue conntrack info attaching
basis is generic, rename those names to generic one, glue.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Flavio Leitner [Wed, 30 Sep 2015 13:23:50 +0000 (10:23 -0300)]
netfilter: remove dead code
Remove __nf_conntrack_find() from headers.
Fixes:
dcd93ed4cd1 ("netfilter: nf_conntrack: remove dead code")
Signed-off-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Sun, 4 Oct 2015 17:38:14 +0000 (19:38 +0200)]
netfilter: nfnetlink_queue: use y2038 safe timestamp
The __build_packet_message function fills a nfulnl_msg_packet_timestamp
structure that uses 64-bit seconds and is therefore y2038 safe, but
it uses an intermediate 'struct timespec' which is not.
This trivially changes the code to use 'struct timespec64' instead,
to correct the result on 32-bit architectures.
This is a copy and paste of Arnd's original patch for nfnetlink_log.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Mon, 5 Oct 2015 15:25:54 +0000 (17:25 +0200)]
Merge tag 'ipvs3-for-v4.4' of https://git./linux/kernel/git/horms/ipvs-next
Simon Horman says:
====================
Third Round of IPVS Updates for v4.4
please consider this build fix from Eric Biederman which resolves
a build problem introduced in is excellent work to cleanup IPVS which
you recently pulled: its queued up for v4.4 so no need to worry
about earlier kernel versions.
I have another minor cleanup, to fix a build warning, pending.
However, I wanted to send this one to you now as its hit nf-next,
net-next and in turn next, and a slow trickle of bug reports are appearing.
====================
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Wed, 30 Sep 2015 21:53:54 +0000 (22:53 +0100)]
netfilter: rename nfnetlink_queue_core.c to nfnetlink_queue.c
Now that we have integrated the ct glue code into nfnetlink_queue without
introducing dependencies with the conntrack code.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Wed, 30 Sep 2015 21:53:44 +0000 (22:53 +0100)]
netfilter: nfnetlink_queue: get rid of nfnetlink_queue_ct.c
The original intention was to avoid dependencies between nfnetlink_queue and
conntrack without ifdef pollution. However, we can achieve this by moving the
conntrack dependent code into ctnetlink and keep some glue code to access the
nfq_ct indirection from nfqueue.
After this patch, the nfq_ct indirection is always compiled in the netfilter
core to avoid polluting nfqueue with ifdefs. Thus, if nf_conntrack is not
compiled this results in only 8-bytes of memory waste in x86_64.
This patch also adds ctnetlink_nfqueue_seqadj() to avoid that the nf_conn
structure layout if exposed to nf_queue, which creates another dependency with
nf_conntrack at compilation time.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Eric Dumazet [Sat, 3 Oct 2015 13:27:28 +0000 (06:27 -0700)]
tcp/dccp: add SLAB_DESTROY_BY_RCU flag for request sockets
Before letting request sockets being put in TCP/DCCP regular
ehash table, we need to add either :
- SLAB_DESTROY_BY_RCU flag to their kmem_cache
- add RCU grace period before freeing them.
Since we carefully respected the SLAB_DESTROY_BY_RCU protocol
like ESTABLISH and TIMEWAIT sockets, use it here.
req_prot_init() being only used by TCP and DCCP, I did not add
a new slab_flags into their rsk_prot, but reuse prot->slab_flags
Since all reqsk_alloc() users are correctly dealing with a failure,
add the __GFP_NOWARN flag to avoid traces under pressure.
Fixes:
079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 3 Oct 2015 12:16:50 +0000 (05:16 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2015-09-30
This series contains updates to i40e and i40evf only.
Vasily Averin provides a couple of rtnl lock/unlock fixes for both i40e
and i40evf.
Shannon provides several updates and fixes, first fixes up a type clash
in i40e_aq_rc_to_posix(), where the error codes are signed values, so we
need to treat them as such. Then fixes up a padding issue where an
extra byte is added in i40e_aqc_get_cee_dcb_cfg_v1_resp to directly
acknowledge the padding. Updated i40e to keep debugfs register read
and writes from accessing outside of the io-remapped space. Added
support and device id for another 20 GbE device.
Jesse fixes the transmit hand workaround code for ARM that was causing
Tx hangs to still occur occasionally when there really was no hang. Then
fixed the receive dropped counter to show up in netstat interface.
Refactor the interrupt enable function since it was always making the
caller add the base_vector from the VSI struct which is already passed
to the function. Fix kbuild warnings found in 0day build infrastructure
by adding a harmless cast to a dev_info(), also fix 32 bit build
warnings found by sparse.
Greg fixed a configuration error that results if a port VLAN is set
for a VF before the VF driver is loaded, so that when the VF driver is
loaded the port VLAN is ignored.
Mitch fixes the use of QOS field consistently in
i40e_ndo_set_vf_port_vlan(). Modified the init timing of the driver
to increase stability on load/unload and SR-IOV enable/disable cycles.
Anjali updates i40e to not collect VEB stats if they are disabled in the
hardware for performance reasons.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 3 Oct 2015 12:05:30 +0000 (05:05 -0700)]
Merge branch 'ravb-r8a7795'
Simon Horman says:
====================
ravb: Add support for r8a7795 SoC
please consider this series for net-next.
It enhances the ravb driver to support the r8a7795 SoC.
Changes:
* Dropped RFC prefix
* Details in changelog of individual patches
Base:
* net-next/master
Availability:
To aid review of this in conjunction with other EtherAVB changes
the following branches are available in my renesas tree on kernel.org.
* me/r8a7795-ravb-driver-v4: this series
* me/r8a7795-ravb-pfc-v2: r8a7795 sh-pfc update for EthernetAVB
* me/r8a7795-ravb-integration-v4: enable EthernetAVB on r8a7795
* me/r8a7795-ravb-driver-and-integration-v4.runtime:
the above three branches with their runtime dependencies
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Kazuya Mizuguchi [Wed, 30 Sep 2015 06:15:55 +0000 (15:15 +0900)]
ravb: Add support for r8a7795 SoC
This patch supports the r8a7795 SoC by:
- Using two interrupts
+ One for E-MAC
+ One for everything else
+ Both can be handled by the existing common interrupt handler, which
affords a simpler update to support the new SoC. In future some
consideration may be given to implementing multiple interrupt handlers
- Limiting the phy speed to 100Mbit/s for the new SoC;
at this time it is not clear how this restriction may be lifted
but I hope it will be possible as more information comes to light
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
[horms: reworked]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kazuya Mizuguchi [Wed, 30 Sep 2015 06:15:54 +0000 (15:15 +0900)]
ravb: Document binding for r8a7795 SoC
This patch updates the ravb binding to support the r8a7795 SoC by:
- Adding a compat string for the new hardware
- Adding 25 named interrupts to binding for the new SoC;
older SoCs continue to use a single multiplexed interrupt
The example is also updated to reflect the r8a7795 as this is the
more complex case.
Based on work by Kazuya Mizuguchi and others.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kazuya Mizuguchi [Wed, 30 Sep 2015 06:15:53 +0000 (15:15 +0900)]
ravb: Provide dev parameter to DMA API
This patch is in preparation for using this driver on arm64 where the
implementation of __dma_alloc_coherent fails if a device parameter is not
provided.
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Masaru Nagai <masaru.nagai.vx@renesas.com>
[horms: squashed into a single patch]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simon Horman [Wed, 30 Sep 2015 06:15:52 +0000 (15:15 +0900)]
phylib: Add phy_set_max_speed helper
Add a helper to allow ethernet drivers to limit the speed of a phy
(that they are attached to).
This mainly involves factoring out the business-end of
of_set_phy_supported() and exporting a new symbol.
This code seems to be open coded in several places, in several different
variants.
It is is envisaged that this will be used in situations where setting the
"max-speed" property in DT is not appropriate, e.g. because the maximum
speed is not a property of the phy hardware.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 3 Oct 2015 12:02:50 +0000 (05:02 -0700)]
Merge branch 'bpf-updates'
Daniel Borkmann says:
====================
BPF updates
Some minor updates to {cls,act}_bpf to retrieve routing realms
and to make skb->priority writable.
Thanks!
v1 -> v2:
- Dropped preclassify patch for now from the series as the
rest is pretty much independent of it
- Rest unchanged, only rebased and already posted Acked-by's kept
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 29 Sep 2015 23:41:52 +0000 (01:41 +0200)]
sched, bpf: make skb->priority writable
{cls,act}_bpf can now set the skb->priority from an eBPF program based
on various critera, so that for example classful qdiscs like multiq can
update the skb's priority during enqueue time and further push it down
into subsequent qdiscs.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 29 Sep 2015 23:41:51 +0000 (01:41 +0200)]
sched, bpf: add helper for retrieving routing realms
Using routing realms as part of the classifier is quite useful, it
can be viewed as a tag for one or multiple routing entries (think of
an analogy to net_cls cgroup for processes), set by user space routing
daemons or via iproute2 as an indicator for traffic classifiers and
later on processed in the eBPF program.
Unlike actions, the classifier can inspect device flags and enable
netif_keep_dst() if necessary. tc actions don't have that possibility,
but in case people know what they are doing, it can be used from there
as well (e.g. via devs that must keep dsts by design anyway).
If a realm is set, the handler returns the non-zero realm. User space
can set the full 32bit realm for the dst.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 29 Sep 2015 23:41:50 +0000 (01:41 +0200)]
ebpf: migrate bpf_prog's flags to bitfield
As we need to add further flags to the bpf_prog structure, lets migrate
both bools to a bitfield representation. The size of the base structure
(excluding insns) remains unchanged at 40 bytes.
Add also tags for the kmemchecker, so that it doesn't throw false
positives. Even in case gcc would generate suboptimal code, it's not
being accessed in performance critical paths.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 3 Oct 2015 11:49:48 +0000 (04:49 -0700)]
Merge branch 'switchdev-obj'
Jiri Pirko says:
====================
switchdev: bring back switchdev_obj
Second version of the patch extends to a patchset. Basically this patchset
brings object structure back which disappeared with recent Vivien's patchset.
Also it does a bit of naming changes in order to get the things in line.
Also, object id is put back into object structure.
Thanks to Scott and Vivien for review and suggestions.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 1 Oct 2015 09:03:46 +0000 (11:03 +0200)]
switchdev: push object ID back to object structure
Suggested-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 1 Oct 2015 09:03:45 +0000 (11:03 +0200)]
switchdev: bring back switchdev_obj and use it as a generic object param
Replace "void *obj" with a generic structure. Introduce couple of
helpers along that.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 1 Oct 2015 09:03:44 +0000 (11:03 +0200)]
switchdev: rename switchdev_obj_fdb to switchdev_obj_port_fdb
Make the struct name in sync with object id name.
Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 1 Oct 2015 09:03:43 +0000 (11:03 +0200)]
switchdev: rename switchdev_obj_vlan to switchdev_obj_port_vlan
Make the struct name in sync with object id name.
Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 1 Oct 2015 09:03:42 +0000 (11:03 +0200)]
switchdev: rename SWITCHDEV_ATTR_* enum values to SWITCHDEV_ATTR_ID_*
To be aligned with obj.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Thu, 1 Oct 2015 09:03:41 +0000 (11:03 +0200)]
switchdev: rename SWITCHDEV_OBJ_* enum values to SWITCHDEV_OBJ_ID_*
Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 3 Oct 2015 11:32:52 +0000 (04:32 -0700)]
Merge branch 'tcp-lockless-listener'
Eric Dumazet says:
====================
tcp/dccp: lockless listener
TCP listener refactoring : this is becoming interesting !
This patch series takes the steps to use normal TCP/DCCP ehash
table to store SYN_RECV requests, instead of the private per-listener
hash table we had until now.
SYNACK skb are now attached to their syn_recv request socket,
so that we no longer heavily modify listener sk_wmem_alloc.
listener lock is no longer held in fast path, including
SYNCOOKIE mode.
During my tests, my server was able to process 3,500,000
SYN packets per second on one listener and still had available
cpu cycles.
That is about 2 to 3 order of magnitude what we had with older kernels.
This effort started two years ago and I am pleased to reach expectations.
We'll probably extend SO_REUSEPORT to add proper cpu/numa affinities,
so that heavy duty TCP servers can get proper siloing thanks to multi-queues
NIC.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:39 +0000 (11:43 -0700)]
tcp: do not lock listener to process SYN packets
Everything should now be ready to finally allow SYN
packets processing without holding listener lock.
Tested:
3.5 Mpps SYNFLOOD. Plenty of cpu cycles available.
Next bottleneck is the refcount taken on listener,
that could be avoided if we remove SLAB_DESTROY_BY_RCU
strict semantic for listeners, and use regular RCU.
13.18% [kernel] [k] __inet_lookup_listener
9.61% [kernel] [k] tcp_conn_request
8.16% [kernel] [k] sha_transform
5.30% [kernel] [k] inet_reqsk_alloc
4.22% [kernel] [k] sock_put
3.74% [kernel] [k] tcp_make_synack
2.88% [kernel] [k] ipt_do_table
2.56% [kernel] [k] memcpy_erms
2.53% [kernel] [k] sock_wfree
2.40% [kernel] [k] tcp_v4_rcv
2.08% [kernel] [k] fib_table_lookup
1.84% [kernel] [k] tcp_openreq_init_rwin
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:38 +0000 (11:43 -0700)]
tcp/dccp: add a reschedule point in inet_csk_listen_stop()
If a listener with thousands of children in accept queue
is dismantled, it can take a while to close all of them.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:37 +0000 (11:43 -0700)]
tcp: remove max_qlen_log
This control variable was set at first listen(fd, backlog)
call, but not updated if application tried to increase or decrease
backlog. It made sense at the time listener had a non resizeable
hash table.
Also rounding to powers of two was not very friendly.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:36 +0000 (11:43 -0700)]
tcp/dccp: remove struct listen_sock
It is enough to check listener sk_state, no need for an extra
condition.
max_qlen_log can be moved into struct request_sock_queue
We can remove syn_wait_lock and the alignment it enforced.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:35 +0000 (11:43 -0700)]
tcp: attach SYNACK messages to request sockets instead of listener
If a listen backlog is very big (to avoid syncookies), then
the listener sk->sk_wmem_alloc is the main source of false
sharing, as we need to touch it twice per SYNACK re-transmit
and TX completion.
(One SYN packet takes listener lock once, but up to 6 SYNACK
are generated)
By attaching the skb to the request socket, we remove this
source of contention.
Tested:
listen(fd,
10485760); // single listener (no SO_REUSEPORT)
16 RX/TX queue NIC
Sustain a SYNFLOOD attack of ~320,000 SYN per second,
Sending ~1,400,000 SYNACK per second.
Perf profiles now show listener spinlock being next bottleneck.
20.29% [kernel] [k] queued_spin_lock_slowpath
10.06% [kernel] [k] __inet_lookup_established
5.12% [kernel] [k] reqsk_timer_handler
3.22% [kernel] [k] get_next_timer_interrupt
3.00% [kernel] [k] tcp_make_synack
2.77% [kernel] [k] ipt_do_table
2.70% [kernel] [k] run_timer_softirq
2.50% [kernel] [k] ip_finish_output
2.04% [kernel] [k] cascade
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:34 +0000 (11:43 -0700)]
ipv6: remove obsolete inet6 functions
inet6_csk_search_req() and inet6_csk_reqsk_queue_hash_add()
no longer exist.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:33 +0000 (11:43 -0700)]
tcp/dccp: shrink struct listen_sock
We no longer use hash_rnd, nr_table_entries and syn_table[]
For a listener with a backlog of 10 millions sockets, this
saves 80 MBytes of vmalloced memory.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:32 +0000 (11:43 -0700)]
tcp/dccp: install syn_recv requests into ehash table
In this patch, we insert request sockets into TCP/DCCP
regular ehash table (where ESTABLISHED and TIMEWAIT sockets
are) instead of using the per listener hash table.
ACK packets find SYN_RECV pseudo sockets without having
to find and lock the listener.
In nominal conditions, this halves pressure on listener lock.
Note that this will allow for SO_REUSEPORT refinements,
so that we can select a listener using cpu/numa affinities instead
of the prior 'consistent hash', since only SYN packets will
apply this selection logic.
We will shrink listen_sock in the following patch to ease
code review.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ying Cai <ycai@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:31 +0000 (11:43 -0700)]
tcp/dccp: remove inet_csk_reqsk_queue_added() timeout argument
This is no longer used.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:30 +0000 (11:43 -0700)]
tcp: get_openreq[46]() changes
When request sockets are no longer in a per listener hash table
but on regular TCP ehash, we need to access listener uid
through req->rsk_listener
get_openreq6() also gets a const for its request socket argument.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:29 +0000 (11:43 -0700)]
tcp: remove BUG_ON() in tcp_check_req()
Once listener is lockless, its sk_state can change anytime.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:28 +0000 (11:43 -0700)]
tcp: cleanup tcp_v[46]_inbound_md5_hash()
We'll soon have to call tcp_v[46]_inbound_md5_hash() twice.
Also add const attribute to the socket, as it might be the
unlocked listener for SYN packets.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:27 +0000 (11:43 -0700)]
tcp/dccp: init sk_prot and call sk_node_init() in reqsk_alloc()
We plan to use generic functions to insert request sockets
into ehash table.
sk_prot needs to be set (to retrieve sk_prot->h.hashinfo)
sk_node needs to be cleared.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:26 +0000 (11:43 -0700)]
tcp: call sk_mark_napi_id() on the child, not the listener
This fixes a typo : We want to store the NAPI id on child socket.
Presumably nobody really uses busy polling, on short lived flows.
Fixes:
3d97379a67486 ("tcp: move sk_mark_napi_id() at the right place")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:25 +0000 (11:43 -0700)]
tcp: move synflood_warned into struct request_sock_queue
long term plan is to remove struct listen_sock when its hash
table is no longer there.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:24 +0000 (11:43 -0700)]
tcp: move qlen/young out of struct listen_sock
qlen_inc & young_inc were protected by listener lock,
while qlen_dec & young_dec were atomic fields.
Everything needs to be atomic for upcoming lockless listener.
Also move qlen/young in request_sock_queue as we'll get rid
of struct listen_sock eventually.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 2 Oct 2015 18:43:23 +0000 (11:43 -0700)]
tcp: add a spinlock to protect struct request_sock_queue
struct request_sock_queue fields are currently protected
by the listener 'lock' (not a real spinlock)
We need to add a private spinlock instead, so that softirq handlers
creating children do not have to worry with backlog notion
that the listener 'lock' carries.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 2 Oct 2015 14:21:25 +0000 (07:21 -0700)]
Merge git://git./linux/kernel/git/davem/net
Conflicts:
net/dsa/slave.c
net/dsa/slave.c simply had overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 2 Oct 2015 12:03:04 +0000 (08:03 -0400)]
Merge tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes intended for v4.3 rc4:
MMC core:
- Allow users of mmc_of_parse() to succeed when CONFIG_GPIOLIB is
unset
- Prevent infinite loop of re-tuning for CRC-errors for CMD19 and
CMD21
MMC host:
- pxamci: Fix issues with card detect
- sunxi: Fix clk-delay settings"
* tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: core: fix dead loop of mmc_retune
mmc: pxamci: fix card detect with slot-gpio API
mmc: sunxi: Fix clk-delay settings
mmc: core: Don't return an error for CD/WP GPIOs when GPIOLIB is unset
Linus Torvalds [Fri, 2 Oct 2015 11:59:29 +0000 (07:59 -0400)]
Merge git://git.infradead.org/intel-iommu
Pull IOVA fixes from David Woodhouse:
"The main fix here is the first one, fixing the over-allocation of
size-aligned requests. The other patches simply make the existing
IOVA code available to users other than the Intel VT-d driver, with no
functional change.
I concede the latter really *should* have been submitted during the
merge window, but since it's basically risk-free and people are
waiting to build on top of it and it's my fault I didn't get it in, I
(and they) would be grateful if you'd take it"
* git://git.infradead.org/intel-iommu:
iommu: Make the iova library a module
iommu: iova: Export symbols
iommu: iova: Move iova cache management to the iova library
iommu/iova: Avoid over-allocating when size-aligned
Linus Torvalds [Fri, 2 Oct 2015 02:20:11 +0000 (22:20 -0400)]
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"12 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
dmapool: fix overflow condition in pool_find_page()
thermal: avoid division by zero in power allocator
memcg: remove pcp_counter_lock
kprobes: use _do_fork() in samples to make them work again
drivers/input/joystick/Kconfig: zhenhua.c needs BITREVERSE
memcg: make mem_cgroup_read_stat() unsigned
memcg: fix dirty page migration
dax: fix NULL pointer in __dax_pmd_fault()
mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
userfaultfd: remove kernel header include from uapi header
arch/x86/include/asm/efi.h: fix build failure
Linus Torvalds [Fri, 2 Oct 2015 02:06:40 +0000 (22:06 -0400)]
Merge tag 'pm+acpi-4.3-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These are fixes mostly, for a few changes made in this cycle (the
intel_idle driver, the OPP library, the ACPI EC driver, turbostat) and
for some issues that have just been discovered (ACPI PCI IRQ
management, PCI power management documentation, turbostat), with a
couple of cleanups on top of them.
Specifics:
- intel_idle driver fixup for the recently added Skylake chips
support (Len Brown).
- Operating Performance Points (OPP) library fix related to the
recently added support for new DT bindings and a fix for a typo in
a comment (Viresh Kumar, Stephen Boyd).
- ACPI EC driver fix for a recently introduced memory leak in an
error code path (Lv Zheng).
- ACPI PCI IRQ management fix for the issue where an ISA IRQ is
shared with a PCI device which requires it to be configured in a
different way and may cause an interrupt storm to happen as a
result with an extra ACPI SCI IRQ handling simplification on top of
it (Jiang Liu).
- Update of the PCI power management documentation that became
outdated and started to actively confuse the readers to make it
actually reflect the code (Rafael J Wysocki).
- turbostat fixes including an IVB Xeon regression fix (related to
the --debug command line option), Skylake adjustment for the TSC
running at a frequency that doesn't match the base one exactly, and
a Knights Landing quirk to account for the fact that it only
updates APERF and MPERF every 1024 clock cycles plus bumping up the
turbostat version number (Len Brown, Hubert Chrzaniuk)"
* tag 'pm+acpi-4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tools/power turbosat: update version number
tools/power turbostat: SKL: Adjust for TSC difference from base frequency
tools/power turbostat: KNL workaround for %Busy and Avg_MHz
tools/power turbostat: IVB Xeon: fix --debug regression
ACPI / PCI: Remove duplicated penalty on SCI IRQ
ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ
ACPI / EC: Fix a memory leak issue in acpi_ec_query()
PM / OPP: Fix typo modifcation -> modification
PCI / PM: Update runtime PM documentation for PCI devices
PM / OPP: of_property_count_u32_elems() can return errors
intel_idle: Skylake Client Support - updated
Linus Torvalds [Fri, 2 Oct 2015 01:55:35 +0000 (21:55 -0400)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix regression in SKB partial checksum handling, from Pravin B
Shalar.
2) Fix VLAN inside of VXLAN handling in i40e driver, from Jesse
Brandeburg.
3) Cure softlockups during accept() in SCTP, from Karl Heiss.
4) MSG_PEEK should return multiple SKBs worth of data in AF_UNIX, from
Aaron Conole.
5) IPV6 erroneously ignores output interface specifier in lookup key for
route lookups, fix from David Ahern.
6) In Marvell DSA driver, forward unknown frames to CPU port, from
Andrew Lunn.
7) Mission flow flag initializations in some code paths, from David
Ahern.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
net: Initialize flow flags in input path
net: dsa: fix preparation of a port STP update
testptp: Silence compiler warnings on ppc64
net/mlx4: Handle return codes in mlx4_qp_attach_common
dsa: mv88e6xxx: Enable forwarding for unknown to the CPU port
skbuff: Fix skb checksum partial check.
net: ipv6: Add RT6_LOOKUP_F_IFACE flag if oif is set
net sysfs: Print link speed as signed integer
bna: fix error handling
af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag
af_unix: Convert the unix_sk macro to an inline function for type safety
net: sctp: Don't use 64 kilobyte lookup table for four elements
l2tp: protect tunnel->del_work by ref_count
net/ibm/emac: bump version numbers for correct work with ethtool
sctp: Prevent soft lockup when sctp_accept() is called during a timeout event
sctp: Whitespace fix
i40e/i40evf: check for stopped admin queue
i40e: fix VLAN inside VXLAN
r8169: fix handling rtl_readphy result
net: hisilicon: fix handling platform_get_irq result
Robin Murphy [Thu, 1 Oct 2015 22:37:19 +0000 (15:37 -0700)]
dmapool: fix overflow condition in pool_find_page()
If a DMA pool lies at the very top of the dma_addr_t range (as may
happen with an IOMMU involved), the calculated end address of the pool
wraps around to zero, and page lookup always fails.
Tweak the relevant calculation to be overflow-proof.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrea Arcangeli [Thu, 1 Oct 2015 22:37:16 +0000 (15:37 -0700)]
thermal: avoid division by zero in power allocator
During boot I get a div by zero Oops regression starting in v4.3-rc3.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Javi Merino <javi.merino@arm.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Thelen [Thu, 1 Oct 2015 22:37:13 +0000 (15:37 -0700)]
memcg: remove pcp_counter_lock
Commit
733a572e66d2 ("memcg: make mem_cgroup_read_{stat|event}() iterate
possible cpus instead of online") removed the last use of the per memcg
pcp_counter_lock but forgot to remove the variable.
Kill the vestigial variable.
Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Petr Mladek [Thu, 1 Oct 2015 22:37:11 +0000 (15:37 -0700)]
kprobes: use _do_fork() in samples to make them work again
Commit
3033f14ab78c ("clone: support passing tls argument via C rather
than pt_regs magic") introduced _do_fork() that allowed to pass @tls
parameter.
The old do_fork() is defined only for architectures that are not ready
to use this way and do not define HAVE_COPY_THREAD_TLS.
Let's use _do_fork() in the kprobe examples to make them work again on
all architectures.
Signed-off-by: Petr Mladek <pmladek@suse.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thiago Macieira <thiago.macieira@intel.com>
Cc: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Thu, 1 Oct 2015 22:37:08 +0000 (15:37 -0700)]
drivers/input/joystick/Kconfig: zhenhua.c needs BITREVERSE
It uses bitrev8(), so it must ensure that lib/bitrev.o gets included in
vmlinux.
Cc: Fengguang Wu <fengguang.wu@gmail.com>
Cc: yalin wang <yalin.wang2010@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Thelen [Thu, 1 Oct 2015 22:37:05 +0000 (15:37 -0700)]
memcg: make mem_cgroup_read_stat() unsigned
mem_cgroup_read_stat() returns a page count by summing per cpu page
counters. The summing is racy wrt. updates, so a transient negative
sum is possible. Callers don't want negative values:
- mem_cgroup_wb_stats() doesn't want negative nr_dirty or nr_writeback.
This could confuse dirty throttling.
- oom reports and memory.stat shouldn't show confusing negative usage.
- tree_usage() already avoids negatives.
Avoid returning negative page counts from mem_cgroup_read_stat() and
convert it to unsigned.
[akpm@linux-foundation.org: fix old typo while we're in there]
Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org> [4.2+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Thelen [Thu, 1 Oct 2015 22:37:02 +0000 (15:37 -0700)]
memcg: fix dirty page migration
The problem starts with a file backed dirty page which is charged to a
memcg. Then page migration is used to move oldpage to newpage.
Migration:
- copies the oldpage's data to newpage
- clears oldpage.PG_dirty
- sets newpage.PG_dirty
- uncharges oldpage from memcg
- charges newpage to memcg
Clearing oldpage.PG_dirty decrements the charged memcg's dirty page
count.
However, because newpage is not yet charged, setting newpage.PG_dirty
does not increment the memcg's dirty page count. After migration
completes newpage.PG_dirty is eventually cleared, often in
account_page_cleaned(). At this time newpage is charged to a memcg so
the memcg's dirty page count is decremented which causes underflow
because the count was not previously incremented by migration. This
underflow causes balance_dirty_pages() to see a very large unsigned
number of dirty memcg pages which leads to aggressive throttling of
buffered writes by processes in non root memcg.
This issue:
- can harm performance of non root memcg buffered writes.
- can report too small (even negative) values in
memory.stat[(total_)dirty] counters of all memcg, including the root.
To avoid polluting migrate.c with #ifdef CONFIG_MEMCG checks, introduce
page_memcg() and set_page_memcg() helpers.
Test:
0) setup and enter limited memcg
mkdir /sys/fs/cgroup/test
echo 1G > /sys/fs/cgroup/test/memory.limit_in_bytes
echo $$ > /sys/fs/cgroup/test/cgroup.procs
1) buffered writes baseline
dd if=/dev/zero of=/data/tmp/foo bs=1M count=1k
sync
grep ^dirty /sys/fs/cgroup/test/memory.stat
2) buffered writes with compaction antagonist to induce migration
yes 1 > /proc/sys/vm/compact_memory &
rm -rf /data/tmp/foo
dd if=/dev/zero of=/data/tmp/foo bs=1M count=1k
kill %
sync
grep ^dirty /sys/fs/cgroup/test/memory.stat
3) buffered writes without antagonist, should match baseline
rm -rf /data/tmp/foo
dd if=/dev/zero of=/data/tmp/foo bs=1M count=1k
sync
grep ^dirty /sys/fs/cgroup/test/memory.stat
(speed, dirty residue)
unpatched patched
1) 841 MB/s 0 dirty pages 886 MB/s 0 dirty pages
2) 611 MB/s -
33427456 dirty pages 793 MB/s 0 dirty pages
3) 114 MB/s -
33427456 dirty pages 891 MB/s 0 dirty pages
Notice that unpatched baseline performance (1) fell after
migration (3): 841 -> 114 MB/s. In the patched kernel, post
migration performance matches baseline.
Fixes:
c4843a7593a9 ("memcg: add per cgroup dirty page accounting")
Signed-off-by: Greg Thelen <gthelen@google.com>
Reported-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org> [4.2+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ross Zwisler [Thu, 1 Oct 2015 22:36:59 +0000 (15:36 -0700)]
dax: fix NULL pointer in __dax_pmd_fault()
Commit
46c043ede471 ("mm: take i_mmap_lock in unmap_mapping_range() for
DAX") moved some code in __dax_pmd_fault() that was responsible for
zeroing newly allocated PMD pages. The new location didn't properly set
up 'kaddr', so when run this code resulted in a NULL pointer BUG.
Fix this by getting the correct 'kaddr' via bdev_direct_access().
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reported-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mel Gorman [Thu, 1 Oct 2015 22:36:57 +0000 (15:36 -0700)]
mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
SunDong reported the following on
https://bugzilla.kernel.org/show_bug.cgi?id=103841
I think I find a linux bug, I have the test cases is constructed. I
can stable recurring problems in fedora22(4.0.4) kernel version,
arch for x86_64. I construct transparent huge page, when the parent
and child process with MAP_SHARE, MAP_PRIVATE way to access the same
huge page area, it has the opportunity to lead to huge page copy on
write failure, and then it will munmap the child corresponding mmap
area, but then the child mmap area with VM_MAYSHARE attributes, child
process munmap this area can trigger VM_BUG_ON in set_vma_resv_flags
functions (vma - > vm_flags & VM_MAYSHARE).
There were a number of problems with the report (e.g. it's hugetlbfs that
triggers this, not transparent huge pages) but it was fundamentally
correct in that a VM_BUG_ON in set_vma_resv_flags() can be triggered that
looks like this
vma
ffff8804651fd0d0 start
00007fc474e00000 end
00007fc475e00000
next
ffff8804651fd018 prev
ffff8804651fd188 mm
ffff88046b1b1800
prot
8000000000000027 anon_vma (null) vm_ops
ffffffff8182a7a0
pgoff 0 file
ffff88106bdb9800 private_data (null)
flags: 0x84400fb(read|write|shared|mayread|maywrite|mayexec|mayshare|dontexpand|hugetlb)
------------
kernel BUG at mm/hugetlb.c:462!
SMP
Modules linked in: xt_pkttype xt_LOG xt_limit [..]
CPU: 38 PID: 26839 Comm: map Not tainted 4.0.4-default #1
Hardware name: Dell Inc. PowerEdge R810/0TT6JF, BIOS 2.7.4 04/26/2012
set_vma_resv_flags+0x2d/0x30
The VM_BUG_ON is correct because private and shared mappings have
different reservation accounting but the warning clearly shows that the
VMA is shared.
When a private COW fails to allocate a new page then only the process
that created the VMA gets the page -- all the children unmap the page.
If the children access that data in the future then they get killed.
The problem is that the same file is mapped shared and private. During
the COW, the allocation fails, the VMAs are traversed to unmap the other
private pages but a shared VMA is found and the bug is triggered. This
patch identifies such VMAs and skips them.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: SunDong <sund_sky@126.com>
Reviewed-by: Michal Hocko <mhocko@suse.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: David Rientjes <rientjes@google.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joonsoo Kim [Thu, 1 Oct 2015 22:36:54 +0000 (15:36 -0700)]
mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
Commit description is copied from the original post of this bug:
http://comments.gmane.org/gmane.linux.kernel.mm/135349
Kernels after v3.9 use kmalloc_size(INDEX_NODE + 1) to get the next
larger cache size than the size index INDEX_NODE mapping. In kernels
3.9 and earlier we used malloc_sizes[INDEX_L3 + 1].cs_size.
However, sometimes we can't get the right output we expected via
kmalloc_size(INDEX_NODE + 1), causing a BUG().
The mapping table in the latest kernel is like:
index = {0, 1, 2 , 3, 4, 5, 6, n}
size = {0, 96, 192, 8, 16, 32, 64, 2^n}
The mapping table before 3.10 is like this:
index = {0 , 1 , 2, 3, 4 , 5 , 6, n}
size = {32, 64, 96, 128, 192, 256, 512, 2^(n+3)}
The problem on my mips64 machine is as follows:
(1) When configured DEBUG_SLAB && DEBUG_PAGEALLOC && DEBUG_LOCK_ALLOC
&& DEBUG_SPINLOCK, the sizeof(struct kmem_cache_node) will be "150",
and the macro INDEX_NODE turns out to be "2": #define INDEX_NODE
kmalloc_index(sizeof(struct kmem_cache_node))
(2) Then the result of kmalloc_size(INDEX_NODE + 1) is 8.
(3) Then "if(size >= kmalloc_size(INDEX_NODE + 1)" will lead to "size
= PAGE_SIZE".
(4) Then "if ((size >= (PAGE_SIZE >> 3))" test will be satisfied and
"flags |= CFLGS_OFF_SLAB" will be covered.
(5) if (flags & CFLGS_OFF_SLAB)" test will be satisfied and will go to
"cachep->slabp_cache = kmalloc_slab(slab_size, 0u)", and the result
here may be NULL while kernel bootup.
(6) Finally,"BUG_ON(ZERO_OR_NULL_PTR(cachep->slabp_cache));" causes the
BUG info as the following shows (may be only mips64 has this problem):
This patch fixes the problem of kmalloc_size(INDEX_NODE + 1) and removes
the BUG by adding 'size >= 256' check to guarantee that all necessary
small sized slabs are initialized regardless sequence of slab size in
mapping table.
Fixes:
e33660165c90 ("slab: Use common kmalloc_index/kmalloc_size...")
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reported-by: Liuhailong <liu.hailong6@zte.com.cn>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andre Przywara [Thu, 1 Oct 2015 22:36:51 +0000 (15:36 -0700)]
userfaultfd: remove kernel header include from uapi header
As include/uapi/linux/userfaultfd.h is a user visible header file, it
should not include kernel-exclusive header files.
So trying to build the userfaultfd test program from the selftests
directory fails, since it contains a reference to linux/compiler.h. As
it turns out, that header is not really needed there, so we can simply
remove it to fix that issue.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrey Ryabinin [Thu, 1 Oct 2015 22:36:48 +0000 (15:36 -0700)]
arch/x86/include/asm/efi.h: fix build failure
With KMEMCHECK=y, KASAN=n:
arch/x86/platform/efi/efi.c:673:3: error: implicit declaration of function `memcpy' [-Werror=implicit-function-declaration]
arch/x86/platform/efi/efi_64.c:139:2: error: implicit declaration of function `memcpy' [-Werror=implicit-function-declaration]
arch/x86/include/asm/desc.h:121:2: error: implicit declaration of function `memcpy' [-Werror=implicit-function-declaration]
Don't #undef memcpy if KASAN=n.
Fixes:
769a8089c1fd ("x86, efi, kasan: #undef memset/memcpy/memmove per arch")
Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Reported-by: Ingo Molnar <mingo@kernel.org>
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller [Fri, 2 Oct 2015 01:24:12 +0000 (18:24 -0700)]
Merge branch 'bridge_vlan_cleanups_fixes'
Nikolay Aleksandrov says:
====================
bridge: vlan: cleanups & fixes
This is the first follow-up set, patch 01 reduces the default rhashtable
size and the number of locks that can be allocated. Patch 02 and 04 fix
possible null pointer dereferences due to the new ordering and
initialization on port add/del, and patch 03 moves the "pvid" member in
the net_bridge_vlan_group struct in order to simplify code (similar to how
it was with the older struct). Patch 05 fixes adding a vlan on a port which
is pvid and doesn't have a global context yet.
Please review carefully, I think this is the first use of rhashtable's
"locks_mul" member in the tree and I'd like to make sure it's correct.
Another thing that needs special attention is the nbp_vlan_flush() move
after the rx_handler unregister.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Wed, 30 Sep 2015 18:16:55 +0000 (20:16 +0200)]
bridge: vlan: don't pass flags when creating context only
We should not pass the original flags when creating a context vlan only
because they may contain some flags that change behaviour in the bridge.
The new global context should be with minimal set of flags, so pass 0
and let br_vlan_add() set the master flag only.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Wed, 30 Sep 2015 18:16:54 +0000 (20:16 +0200)]
bridge: vlan: fix possible null ptr derefs on port init and deinit
When a new port is being added we need to make vlgrp available after
rhashtable has been initialized and when removing a port we need to
flush the vlans and free the resources after we're sure noone can use
the port, i.e. after it's removed from the port list and synchronize_rcu
is executed.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Wed, 30 Sep 2015 18:16:53 +0000 (20:16 +0200)]
bridge: vlan: move pvid inside net_bridge_vlan_group
One obvious way to converge more code (which was also used by the
previous vlan code) is to move pvid inside net_bridge_vlan_group. This
allows us to simplify some and remove other port-specific functions.
Also gives us the ability to simply pass the vlan group and use all of the
contained information.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Wed, 30 Sep 2015 18:16:52 +0000 (20:16 +0200)]
bridge: vlan: fix possible null vlgrp deref while registering new port
While a new port is being initialized the rx_handler gets set, but the
vlans get initialized later in br_add_if() and in that window if we
receive a frame with a link-local address we can try to dereference
p->vlgrp in:
br_handle_frame() -> br_handle_local_finish() -> br_should_learn()
Fix this by checking vlgrp before using it.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Wed, 30 Sep 2015 18:16:51 +0000 (20:16 +0200)]
bridge: vlan: adjust rhashtable initial size and hash locks size
As Stephen pointed out the default initial size is more than we need, so
let's start small (4 elements, thus nelem_hint = 3). Also limit the hash
locks to the number of CPUs as we don't need any write-side scaling and
this looks like the minimum.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 1 Oct 2015 20:43:25 +0000 (16:43 -0400)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"(Relatively) a lot of reverts, mostly.
Bugs have trickled in for a new feature in 4.2 (MTRR support in
guests) so I'm reverting it all; let's not make this -rc period busier
for KVM than it's been so far. This covers the four reverts from me.
The fifth patch is being reverted because Radim found a bug in the
implementation of stable scheduler clock, *but* also managed to
implement the feature entirely without hypervisor support. So instead
of fixing the hypervisor side we can remove it completely; 4.4 will
get the new implementation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
Update KVM homepage Url
Revert "KVM: SVM: use NPT page attributes"
Revert "KVM: svm: handle KVM_X86_QUIRK_CD_NW_CLEARED in svm_get_mt_mask"
Revert "KVM: SVM: Sync g_pat with guest-written PAT value"
Revert "KVM: x86: apply guest MTRR virtualization on host reserved pages"
Revert "KVM: x86: zero kvmclock_offset when vcpu0 initializes kvmclock system MSR"
Linus Torvalds [Thu, 1 Oct 2015 20:38:52 +0000 (16:38 -0400)]
Merge tag 'for-linus' of git://git./linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
- Fixes for mlx5 related issues
- Fixes for ipoib multicast handling
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/ipoib: increase the max mcast backlog queue
IB/ipoib: Make sendonly multicast joins create the mcast group
IB/ipoib: Expire sendonly multicast joins
IB/mlx5: Remove pa_lkey usages
IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY
IB/iser: Add module parameter for always register memory
xprtrdma: Replace global lkey with lkey local to PD
Rafael J. Wysocki [Thu, 1 Oct 2015 20:30:47 +0000 (22:30 +0200)]
Merge branches 'pm-cpuidle', 'pm-opp' and 'pm-tools'
* pm-cpuidle:
intel_idle: Skylake Client Support - updated
* pm-opp:
PM / OPP: Fix typo modifcation -> modification
PM / OPP: of_property_count_u32_elems() can return errors
* pm-tools:
tools/power turbosat: update version number
tools/power turbostat: SKL: Adjust for TSC difference from base frequency
tools/power turbostat: KNL workaround for %Busy and Avg_MHz
tools/power turbostat: IVB Xeon: fix --debug regression
Rafael J. Wysocki [Thu, 1 Oct 2015 20:30:35 +0000 (22:30 +0200)]
Merge branch 'acpi-ec'
* acpi-ec:
ACPI / EC: Fix a memory leak issue in acpi_ec_query()
Rafael J. Wysocki [Thu, 1 Oct 2015 20:30:12 +0000 (22:30 +0200)]
Merge branches 'pm-pci' and 'acpi-pci'
* pm-pci:
PCI / PM: Update runtime PM documentation for PCI devices
* acpi-pci:
ACPI / PCI: Remove duplicated penalty on SCI IRQ
ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ
Dirk Müller [Thu, 1 Oct 2015 11:43:42 +0000 (13:43 +0200)]
Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
The cpu feature flags are not ever going to change, so warning
everytime can cause a lot of kernel log spam
(in our case more than 10GB/hour).
The warning seems to only occur when nested virtualization is
enabled, so it's probably triggered by a KVM bug. This is a
sensible and safe change anyway, and the KVM bug fix might not
be suitable for stable releases anyway.
Cc: stable@vger.kernel.org
Signed-off-by: Dirk Mueller <dmueller@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Dirk Müller [Thu, 1 Oct 2015 11:46:01 +0000 (13:46 +0200)]
Update KVM homepage Url
The old one appears to be a generic catch all page, which
is unhelpful.
Signed-off-by: Dirk Mueller <dmueller@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linus Torvalds [Thu, 1 Oct 2015 11:57:27 +0000 (07:57 -0400)]
Merge tag 'upstream-4.3-rc4' of git://git.infradead.org/linux-ubifs
Pull UBI/UBIFS fixes from Richard Weinberger:
"This contains three bug fixes for both UBI and UBIFS"
* tag 'upstream-4.3-rc4' of git://git.infradead.org/linux-ubifs:
UBI: return ENOSPC if no enough space available
UBI: Validate data_size
UBIFS: Kill unneeded locking in ubifs_init_security
Linus Torvalds [Thu, 1 Oct 2015 11:50:08 +0000 (07:50 -0400)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security
Pull key signing fixes from James Morris:
"Keyrings and modsign fixes from David Howells"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
MODSIGN: Change from CMS to PKCS#7 signing if the openssl is too old
X.509: Don't strip leading 00's from key ID when constructing key description
KEYS: Remove unnecessary header #inclusions from extract-cert.c
KEYS: Fix race between key destruction and finding a keyring by name
Paolo Bonzini [Thu, 1 Oct 2015 11:20:22 +0000 (13:20 +0200)]
Revert "KVM: SVM: use NPT page attributes"
This reverts commit
3c2e7f7de3240216042b61073803b61b9b3cfb22.
Initializing the mapping from MTRR to PAT values was reported to
fail nondeterministically, and it also caused extremely slow boot
(due to caching getting disabled---bug 103321) with assigned devices.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Reported-by: Sebastian Schuette <dracon@ewetel.net>
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Thu, 1 Oct 2015 11:19:55 +0000 (13:19 +0200)]
Revert "KVM: svm: handle KVM_X86_QUIRK_CD_NW_CLEARED in svm_get_mt_mask"
This reverts commit
5492830370171b6a4ede8a3bfba687a8d0f25fa5.
It builds on the commit that is being reverted next.
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Thu, 1 Oct 2015 11:28:15 +0000 (13:28 +0200)]
Revert "KVM: SVM: Sync g_pat with guest-written PAT value"
This reverts commit
e098223b789b4a618dacd79e5e0dad4a9d5018d1,
which has a dependency on other commits being reverted.
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Thu, 1 Oct 2015 11:12:47 +0000 (13:12 +0200)]
Revert "KVM: x86: apply guest MTRR virtualization on host reserved pages"
This reverts commit
fd717f11015f673487ffc826e59b2bad69d20fe5.
It was reported to cause Machine Check Exceptions (bug 104091).
Reported-by: harn-solo@gmx.de
Cc: stable@vger.kernel.org # 4.2+
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>