Aaro Koskinen [Thu, 3 Apr 2014 19:24:01 +0000 (22:24 +0300)]
MIPS/loongson2_cpufreq: Fix CPU clock rate setting
commit
8e8acb32960f42c81b1d50deac56a2c07bb6a18a upstream.
Loongson2 has been using (incorrectly) kHz for cpu_clk rate. This has
been unnoticed, as loongson2_cpufreq was the only place where the rate
was set/get. After commit
652ed95d5fa6074b3c4ea245deb0691f1acb6656
(cpufreq: introduce cpufreq_generic_get() routine) things however broke,
and now loops_per_jiffy adjustments are incorrect (1000 times too long).
The patch fixes this by changing cpu_clk rate to Hz.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: cpufreq@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Patchwork: https://patchwork.linux-mips.org/patch/6678/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Gleixner [Mon, 12 May 2014 20:45:35 +0000 (20:45 +0000)]
futex: Prevent attaching to kernel threads
commit
f0d71b3dcb8332f7971b5f2363632573e6d9486a upstream.
We happily allow userspace to declare a random kernel thread to be the
owner of a user space PI futex.
Found while analysing the fallout of Dave Jones syscall fuzzer.
We also should validate the thread group for private futexes and find
some fast way to validate whether the "alleged" owner has RW access on
the file which backs the SHM, but that's a separate issue.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Jones <davej@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Darren Hart <darren@dvhart.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Roland McGrath <roland@hack.frob.com>
Cc: Carlos ODonell <carlos@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/20140512201701.194824402@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Gleixner [Mon, 12 May 2014 20:45:34 +0000 (20:45 +0000)]
futex: Add another early deadlock detection check
commit
866293ee54227584ffcb4a42f69c1f365974ba7f upstream.
Dave Jones trinity syscall fuzzer exposed an issue in the deadlock
detection code of rtmutex:
http://lkml.kernel.org/r/
20140429151655.GA14277@redhat.com
That underlying issue has been fixed with a patch to the rtmutex code,
but the futex code must not call into rtmutex in that case because
- it can detect that issue early
- it avoids a different and more complex fixup for backing out
If the user space variable got manipulated to 0x80000000 which means
no lock holder, but the waiters bit set and an active pi_state in the
kernel is found we can figure out the recursive locking issue by
looking at the pi_state owner. If that is the current task, then we
can safely return -EDEADLK.
The check should have been added in commit
59fa62451 (futex: Handle
futex_pi OWNER_DIED take over correctly) already, but I did not see
the above issue caused by user space manipulation back then.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Jones <davej@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Darren Hart <darren@dvhart.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Roland McGrath <roland@hack.frob.com>
Cc: Carlos ODonell <carlos@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/20140512201701.097349971@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Sat, 31 May 2014 20:45:55 +0000 (13:45 -0700)]
Linux 3.14.5
Eric Dumazet [Thu, 3 Apr 2014 16:28:10 +0000 (09:28 -0700)]
net-gro: reset skb->truesize in napi_reuse_skb()
[ Upstream commit
e33d0ba8047b049c9262fdb1fcafb93cb52ceceb ]
Recycling skb always had been very tough...
This time it appears GRO layer can accumulate skb->truesize
adjustments made by drivers when they attach a fragment to skb.
skb_gro_receive() can only subtract from skb->truesize the used part
of a fragment.
I spotted this problem seeing TcpExtPruneCalled and
TcpExtTCPRcvCollapsed that were unexpected with a recent kernel, where
TCP receive window should be sized properly to accept traffic coming
from a driver not overshooting skb->truesize.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Li RongQing [Thu, 22 May 2014 08:36:55 +0000 (16:36 +0800)]
ipv4: initialise the itag variable in __mkroute_input
[ Upstream commit
fbdc0ad095c0a299e9abf5d8ac8f58374951149a ]
the value of itag is a random value from stack, and may not be initiated by
fib_validate_source, which called fib_combine_itag if CONFIG_IP_ROUTE_CLASSID
is not set
This will make the cached dst uncertainty
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Dumazet [Tue, 20 May 2014 04:56:34 +0000 (21:56 -0700)]
ipv6: gro: fix CHECKSUM_COMPLETE support
[ Upstream commit
4de462ab63e23953fd05da511aeb460ae10cc726 ]
When GRE support was added in linux-3.14, CHECKSUM_COMPLETE handling
broke on GRE+IPv6 because we did not update/use the appropriate csum :
GRO layer is supposed to use/update NAPI_GRO_CB(skb)->csum instead of
skb->csum
Tested using a GRE tunnel and IPv6 traffic. GRO aggregation now happens
at the first level (ethernet device) instead of being done in gre
tunnel. Native IPv6+TCP is still properly aggregated.
Fixes:
bf5a755f5e918 ("net-gre-gro: Add GRE support to the GRO stack")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cong Wang [Mon, 19 May 2014 19:15:49 +0000 (12:15 -0700)]
net_sched: fix an oops in tcindex filter
[ Upstream commit
bf63ac73b3e132e6bf0c8798aba7b277c3316e19 ]
Kelly reported the following crash:
IP: [<
ffffffff817a993d>] tcf_action_exec+0x46/0x90
PGD 3009067 PUD 300c067 PMD
11ff30067 PTE
800000011634b060
Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
CPU: 1 PID: 639 Comm: dhclient Not tainted 3.15.0-rc4+ #342
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
task:
ffff8801169ecd00 ti:
ffff8800d21b8000 task.ti:
ffff8800d21b8000
RIP: 0010:[<
ffffffff817a993d>] [<
ffffffff817a993d>] tcf_action_exec+0x46/0x90
RSP: 0018:
ffff8800d21b9b90 EFLAGS:
00010283
RAX:
00000000ffffffff RBX:
ffff88011634b8e8 RCX:
ffff8800cf7133d8
RDX:
ffff88011634b900 RSI:
ffff8800cf7133e0 RDI:
ffff8800d210f840
RBP:
ffff8800d21b9bb0 R08:
ffffffff8287bf60 R09:
0000000000000001
R10:
ffff8800d2b22b24 R11:
0000000000000001 R12:
ffff8800d210f840
R13:
ffff8800d21b9c50 R14:
ffff8800cf7133e0 R15:
ffff8800cad433d8
FS:
00007f49723e1840(0000) GS:
ffff88011a800000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
ffff88011634b8f0 CR3:
00000000ce469000 CR4:
00000000000006e0
Stack:
ffff8800d2170188 ffff8800d210f840 ffff8800d2171b90 0000000000000000
ffff8800d21b9be8 ffffffff817c55bb ffff8800d21b9c50 ffff8800d2171b90
ffff8800d210f840 ffff8800d21b0300 ffff8800d21b9c50 ffff8800d21b9c18
Call Trace:
[<
ffffffff817c55bb>] tcindex_classify+0x88/0x9b
[<
ffffffff817a7f7d>] tc_classify_compat+0x3e/0x7b
[<
ffffffff817a7fdf>] tc_classify+0x25/0x9f
[<
ffffffff817b0e68>] htb_enqueue+0x55/0x27a
[<
ffffffff817b6c2e>] dsmark_enqueue+0x165/0x1a4
[<
ffffffff81775642>] __dev_queue_xmit+0x35e/0x536
[<
ffffffff8177582a>] dev_queue_xmit+0x10/0x12
[<
ffffffff818f8ecd>] packet_sendmsg+0xb26/0xb9a
[<
ffffffff810b1507>] ? __lock_acquire+0x3ae/0xdf3
[<
ffffffff8175cf08>] __sock_sendmsg_nosec+0x25/0x27
[<
ffffffff8175d916>] sock_aio_write+0xd0/0xe7
[<
ffffffff8117d6b8>] do_sync_write+0x59/0x78
[<
ffffffff8117d84d>] vfs_write+0xb5/0x10a
[<
ffffffff8117d96a>] SyS_write+0x49/0x7f
[<
ffffffff8198e212>] system_call_fastpath+0x16/0x1b
This is because we memcpy struct tcindex_filter_result which contains
struct tcf_exts, obviously struct list_head can not be simply copied.
This is a regression introduced by commit
33be627159913b094bb578
(net_sched: act: use standard struct list_head).
It's not very easy to fix it as the code is a mess:
if (old_r)
memcpy(&cr, r, sizeof(cr));
else {
memset(&cr, 0, sizeof(cr));
tcf_exts_init(&cr.exts, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
}
...
tcf_exts_change(tp, &cr.exts, &e);
...
memcpy(r, &cr, sizeof(cr));
the above code should equal to:
tcindex_filter_result_init(&cr);
if (old_r)
cr.res = r->res;
...
if (old_r)
tcf_exts_change(tp, &r->exts, &e);
else
tcf_exts_change(tp, &cr.exts, &e);
...
r->res = cr.res;
after this change, since there is no need to copy struct tcf_exts.
And it also fixes other places zero'ing struct's contains struct tcf_exts.
Fixes: commit
33be627159913b0 (net_sched: act: use standard struct list_head)
Reported-by: Kelly Anderson <kelly@xilka.com>
Tested-by: Kelly Anderson <kelly@xilka.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steffen Klassert [Mon, 19 May 2014 09:36:56 +0000 (11:36 +0200)]
ip_tunnel: Initialize the fallback device properly
[ Upstream commit
78ff4be45a4c51d8fb21ad92e4fabb467c6c3eeb ]
We need to initialize the fallback device to have a correct mtu
set on this device. Otherwise the mtu is set to null and the device
is unusable.
Fixes:
fd58156e456d ("IPIP: Use ip-tunneling code.")
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Antonio Quartulli [Sat, 29 Mar 2014 16:27:38 +0000 (17:27 +0100)]
batman-adv: fix local TT check for outgoing arp requests in DAT
[ Upstream commit
cc2f33860cea0e48ebec096130bd0f7c4bf6e0bc ]
Change introduced by
88e48d7b3340ef07b108eb8a8b3813dd093cc7f7
("batman-adv: make DAT drop ARP requests targeting local clients")
implements a check that prevents DAT from using the caching
mechanism when the client that is supposed to provide a reply
to an arp request is local.
However change brought by
be1db4f6615b5e6156c807ea8985171c215c2d57
("batman-adv: make the Distributed ARP Table vlan aware")
has not converted the above check into its vlan aware version
thus making it useless when the local client is behind a vlan.
Fix the behaviour by properly specifying the vlan when
checking for a client being local or not.
Reported-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Antonio Quartulli [Thu, 1 May 2014 23:35:13 +0000 (01:35 +0200)]
batman-adv: increase orig refcount when storing ref in gw_node
[ Upstream commit
377fe0f968b30a1a714fab53a908061914f30e26 ]
A pointer to the orig_node representing a bat-gateway is
stored in the gw_node->orig_node member, but the refcount
for such orig_node is never increased.
This leads to memory faults when gw_node->orig_node is accessed
and the originator has already been freed.
Fix this by increasing the refcount on gw_node creation
and decreasing it on gw_node free.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Antonio Quartulli [Wed, 23 Apr 2014 12:05:16 +0000 (14:05 +0200)]
batman-adv: fix reference counting imbalance while sending fragment
[ Upstream commit
be181015a189cd141398b761ba4e79d33fe69949 ]
In the new fragmentation code the batadv_frag_send_packet()
function obtains a reference to the primary_if, but it does
not release it upon return.
This reference imbalance prevents the primary_if (and then
the related netdevice) to be properly released on shut down.
Fix this by releasing the primary_if in batadv_frag_send_packet().
Introduced by
ee75ed88879af88558818a5c6609d85f60ff0df4
("batman-adv: Fragment and send skbs larger than mtu")
Cc: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Acked-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Marek Lindner [Wed, 23 Apr 2014 19:44:25 +0000 (03:44 +0800)]
batman-adv: fix indirect hard_iface NULL dereference
[ Upstream commit
16a4142363b11952d3aa76ac78004502c0c2fe6e ]
If hard_iface is NULL and goto out is made batadv_hardif_free_ref()
doesn't check for NULL before dereferencing it to get to refcount.
Introduced in
cb1c92ec37fb70543d133a1fa7d9b54d6f8a1ecd
("batman-adv: add debugfs support to view multiif tables").
Reported-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Acked-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Dumazet [Fri, 16 May 2014 18:34:37 +0000 (11:34 -0700)]
net: gro: make sure skb->cb[] initial content has not to be zero
[ Upstream commit
29e98242783ed3ba569797846a606ba66f781625 ]
Starting from linux-3.13, GRO attempts to build full size skbs.
Problem is the commit assumed one particular field in skb->cb[]
was clean, but it is not the case on some stacked devices.
Timo reported a crash in case traffic is decrypted before
reaching a GRE device.
Fix this by initializing NAPI_GRO_CB(skb)->last at the right place,
this also removes one conditional.
Thanks a lot to Timo for providing full reports and bisecting this.
Fixes:
8a29111c7ca6 ("net: gro: allow to build full sized skb")
Bisected-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nikolay Aleksandrov [Thu, 15 May 2014 11:35:23 +0000 (13:35 +0200)]
bonding: fix out of range parameters for bond_intmax_tbl
[ Upstream commit
81c708068dfedece038e07d818ba68333d8d885d ]
I've missed to add a NULL entry to the bond_intmax_tbl when I introduced
it with the conversion of arp_interval so add it now.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Fixes:
7bdb04ed0dbf ("bonding: convert arp_interval to use the new option API")
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Guenter Roeck [Wed, 14 May 2014 20:12:49 +0000 (13:12 -0700)]
net: phy: Don't call phy_resume if phy_init_hw failed
[ Upstream commit
b394745df2d9d4c30bf1bcc55773bec6f3bc7c67 ]
After the call to phy_init_hw failed in phy_attach_direct, phy_detach is called
to detach the phy device from its network device. If the attached driver is a
generic phy driver, this also detaches the driver. Subsequently phy_resume
is called, which assumes without checking that a driver is attached to the
device. This will result in a crash such as
Unable to handle kernel paging request for data at address 0xffffffffffffff90
Faulting instruction address: 0xc0000000003a0e18
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [
c0000000003a0e18] .phy_attach_direct+0x68/0x17c
LR [
c0000000003a0e6c] .phy_attach_direct+0xbc/0x17c
Call Trace:
[
c0000003fc0475d0] [
c0000000003a0e6c] .phy_attach_direct+0xbc/0x17c (unreliable)
[
c0000003fc047670] [
c0000000003a0ff8] .phy_connect_direct+0x28/0x98
[
c0000003fc047700] [
c0000000003f0074] .of_phy_connect+0x4c/0xa4
Only call phy_resume if phy_init_hw was successful.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cong Wang [Mon, 12 May 2014 22:11:20 +0000 (15:11 -0700)]
rtnetlink: wait for unregistering devices in rtnl_link_unregister()
[ Upstream commit
200b916f3575bdf11609cb447661b8d5957b0bbf ]
From: Cong Wang <cwang@twopensource.com>
commit
50624c934db18ab90 (net: Delay default_device_exit_batch until no
devices are unregistering) introduced rtnl_lock_unregistering() for
default_device_exit_batch(). Same race could happen we when rmmod a driver
which calls rtnl_link_unregister() as we call dev->destructor without rtnl
lock.
For long term, I think we should clean up the mess of netdev_run_todo()
and net namespce exit code.
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hannes Frederic Sowa [Sun, 11 May 2014 21:01:13 +0000 (23:01 +0200)]
ipv6: fix calculation of option len in ip6_append_data
[ Upstream commit
3a1cebe7e05027a1c96f2fc1a8eddf5f19b78f42 ]
tot_len does specify the size of struct ipv6_txoptions. We need opt_flen +
opt_nflen to calculate the overall length of additional ipv6 extensions.
I found this while auditing the ipv6 output path for a memory corruption
reported by Alexey Preobrazhensky while he fuzzed an instrumented
AddressSanitizer kernel with trinity. This may or may not be the cause
of the original bug.
Fixes:
4df98e76cde7c6 ("ipv6: pmtudisc setting not respected with UFO/CORK")
Reported-by: Alexey Preobrazhensky <preobr@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hannes Frederic Sowa [Sun, 11 May 2014 20:59:30 +0000 (22:59 +0200)]
net: avoid dependency of net_get_random_once on nop patching
[ Upstream commit
3d4405226d27b3a215e4d03cfa51f536244e5de7 ]
net_get_random_once depends on the static keys infrastructure to patch up
the branch to the slow path during boot. This was realized by abusing the
static keys api and defining a new initializer to not enable the call
site while still indicating that the branch point should get patched
up. This was needed to have the fast path considered likely by gcc.
The static key initialization during boot up normally walks through all
the registered keys and either patches in ideal nops or enables the jump
site but omitted that step on x86 if ideal nops where already placed at
static_key branch points. Thus net_get_random_once branches not always
became active.
This patch switches net_get_random_once to the ordinary static_key
api and thus places the kernel fast path in the - by gcc considered -
unlikely path. Microbenchmarks on Intel and AMD x86-64 showed that
the unlikely path actually beats the likely path in terms of cycle cost
and that different nop patterns did not make much difference, thus this
switch should not be noticeable.
Fixes:
a48e42920ff38b ("net: introduce new macro net_get_random_once")
Reported-by: Tuomas Räsänen <tuomasjjrasanen@tjjr.fi>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Heiko Carstens [Wed, 14 May 2014 07:48:21 +0000 (09:48 +0200)]
net: filter: s390: fix JIT address randomization
[ Upstream commit
e84d2f8d2ae33c8215429824e1ecf24cbca9645e ]
This is the s390 variant of Alexei's JIT bug fix.
(patch description below stolen from Alexei's patch)
bpf_alloc_binary() adds 128 bytes of room to JITed program image
and rounds it up to the nearest page size. If image size is close
to page size (like 4000), it is rounded to two pages:
round_up(4000 + 4 + 128) == 8192
then 'hole' is computed as 8192 - (4000 + 4) = 4188
If prandom_u32() % hole selects a number >= PAGE_SIZE - sizeof(*header)
then kernel will crash during bpf_jit_free():
kernel BUG at arch/x86/mm/pageattr.c:887!
Call Trace:
[<
ffffffff81037285>] change_page_attr_set_clr+0x135/0x460
[<
ffffffff81694cc0>] ? _raw_spin_unlock_irq+0x30/0x50
[<
ffffffff810378ff>] set_memory_rw+0x2f/0x40
[<
ffffffffa01a0d8d>] bpf_jit_free_deferred+0x2d/0x60
[<
ffffffff8106bf98>] process_one_work+0x1d8/0x6a0
[<
ffffffff8106bf38>] ? process_one_work+0x178/0x6a0
[<
ffffffff8106c90c>] worker_thread+0x11c/0x370
since bpf_jit_free() does:
unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK;
struct bpf_binary_header *header = (void *)addr;
to compute start address of 'bpf_binary_header'
and header->pages will pass junk to:
set_memory_rw(addr, header->pages);
Fix it by making sure that &header->image[prandom_u32() % hole] and &header
are in the same page.
Fixes:
aa2d2c73c21f2 ("s390/bpf,jit: address randomize and write protect jit code")
Reported-by: Alexei Starovoitov <ast@plumgrid.com>
Cc: <stable@vger.kernel.org> # v3.11+
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexei Starovoitov [Tue, 13 May 2014 22:05:55 +0000 (15:05 -0700)]
net: filter: x86: fix JIT address randomization
[ Upstream commit
773cd38f40b8834be991dbfed36683acc1dd41ee ]
bpf_alloc_binary() adds 128 bytes of room to JITed program image
and rounds it up to the nearest page size. If image size is close
to page size (like 4000), it is rounded to two pages:
round_up(4000 + 4 + 128) == 8192
then 'hole' is computed as 8192 - (4000 + 4) = 4188
If prandom_u32() % hole selects a number >= PAGE_SIZE - sizeof(*header)
then kernel will crash during bpf_jit_free():
kernel BUG at arch/x86/mm/pageattr.c:887!
Call Trace:
[<
ffffffff81037285>] change_page_attr_set_clr+0x135/0x460
[<
ffffffff81694cc0>] ? _raw_spin_unlock_irq+0x30/0x50
[<
ffffffff810378ff>] set_memory_rw+0x2f/0x40
[<
ffffffffa01a0d8d>] bpf_jit_free_deferred+0x2d/0x60
[<
ffffffff8106bf98>] process_one_work+0x1d8/0x6a0
[<
ffffffff8106bf38>] ? process_one_work+0x178/0x6a0
[<
ffffffff8106c90c>] worker_thread+0x11c/0x370
since bpf_jit_free() does:
unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK;
struct bpf_binary_header *header = (void *)addr;
to compute start address of 'bpf_binary_header'
and header->pages will pass junk to:
set_memory_rw(addr, header->pages);
Fix it by making sure that &header->image[prandom_u32() % hole] and &header
are in the same page
Fixes:
314beb9bcabfd ("x86: bpf_jit_comp: secure bpf jit against spraying attacks")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simon Wunderlich [Wed, 26 Mar 2014 14:46:24 +0000 (15:46 +0100)]
batman-adv: fix removing neigh_ifinfo
[ Upstream commit
709de13f0c532fe9c468c094aff069a725ed57fe ]
When an interface is removed separately, all neighbors need to be
checked if they have a neigh_ifinfo structure for that particular
interface. If that is the case, remove that ifinfo so any references to
a hard interface can be freed.
This is a regression introduced by
89652331c00f43574515059ecbf262d26d885717
("batman-adv: split tq information in neigh_node struct")
Reported-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simon Wunderlich [Wed, 26 Mar 2014 14:46:23 +0000 (15:46 +0100)]
batman-adv: always run purge_orig_neighbors
[ Upstream commit
7b955a9fc164487d7c51acb9787f6d1b01b35ef6 ]
The current code will not execute batadv_purge_orig_neighbors() when an
orig_ifinfo has already been purged. However we need to run it in any
case. Fix that.
This is a regression introduced by
7351a4822d42827ba0110677c0cbad88a3d52585
("batman-adv: split out router from orig_node")
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simon Wunderlich [Wed, 26 Mar 2014 14:46:22 +0000 (15:46 +0100)]
batman-adv: fix neigh reference imbalance
[ Upstream commit
000c8dff97311357535d64539e58990526e4de70 ]
When an interface is removed from batman-adv, the orig_ifinfo of a
orig_node may be removed without releasing the router first.
This will prevent the reference for the neighbor pointed at by the
orig_ifinfo->router to be released, and this leak may result in
reference leaks for the interface used by this neighbor. Fix that.
This is a regression introduced by
7351a4822d42827ba0110677c0cbad88a3d52585
("batman-adv: split out router from orig_node").
Reported-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simon Wunderlich [Wed, 26 Mar 2014 14:46:21 +0000 (15:46 +0100)]
batman-adv: fix neigh_ifinfo imbalance
[ Upstream commit
c1e517fbbcdb13f50662af4edc11c3251fe44f86 ]
The neigh_ifinfo object must be freed if it has been used in
batadv_iv_ogm_process_per_outif().
This is a regression introduced by
89652331c00f43574515059ecbf262d26d885717
("batman-adv: split tq information in neigh_node struct")
Reported-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Duan Jiong [Fri, 9 May 2014 05:16:48 +0000 (13:16 +0800)]
neigh: set nud_state to NUD_INCOMPLETE when probing router reachability
[ Upstream commit
2176d5d41891753774f648b67470398a5acab584 ]
Since commit
7e98056964("ipv6: router reachability probing"), a router falls
into NUD_FAILED will be probed.
Now if function rt6_select() selects a router which neighbour state is NUD_FAILED,
and at the same time function rt6_probe() changes the neighbour state to NUD_PROBE,
then function dst_neigh_output() can directly send packets, but actually the
neighbour still is unreachable. If we set nud_state to NUD_INCOMPLETE instead
NUD_PROBE, packets will not be sent out until the neihbour is reachable.
In addition, because the route should be probes with a single NS, so we must
set neigh->probes to neigh_max_probes(), then the neigh timer timeout and function
neigh_timer_handler() will not send other NS Messages.
Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Susant Sahani [Fri, 9 May 2014 18:41:32 +0000 (00:11 +0530)]
ip6_tunnel: fix potential NULL pointer dereference
[ Upstream commit
c8965932a2e3b70197ec02c6741c29460279e2a8 ]
The function ip6_tnl_validate assumes that the rtnl
attribute IFLA_IPTUN_PROTO always be filled . If this
attribute is not filled by the userspace application
kernel get crashed with NULL pointer dereference. This
patch fixes the potential kernel crash when
IFLA_IPTUN_PROTO is missing .
Signed-off-by: Susant Sahani <susant@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nikolay Aleksandrov [Fri, 9 May 2014 09:11:39 +0000 (11:11 +0200)]
sfc: fix calling of free_irq with already free vector
[ Upstream commit
1c3639005f48492e5f2d965779efd814e80f8b15 ]
If the sfc driver is in legacy interrupt mode (either explicitly by
using interrupt_mode module param or by falling back to it) it will
hit a warning at kernel/irq/manage.c because it will try to free an irq
which wasn't allocated by it in the first place because the MSI(X) irqs are
zero and it'll try to free them unconditionally. So fix it by checking if
we're in legacy mode and freeing the appropriate irqs.
CC: Zenghui Shi <zshi@redhat.com>
CC: Ben Hutchings <ben@decadent.org.uk>
CC: <linux-net-drivers@solarflare.com>
CC: Shradha Shah <sshah@solarflare.com>
CC: David S. Miller <davem@davemloft.net>
Fixes:
1899c111a535 ("sfc: Fix IRQ cleanup in case of a probe failure")
Reported-by: Zenghui Shi <zshi@redhat.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Christensen [Thu, 8 May 2014 09:15:37 +0000 (11:15 +0200)]
macvlan: Don't propagate IFF_ALLMULTI changes on down interfaces.
[ Upstream commit
bbeb0eadcf9fe74fb2b9b1a6fea82cd538b1e556 ]
Clearing the IFF_ALLMULTI flag on a down interface could cause an allmulti
overflow on the underlying interface.
Attempting the set IFF_ALLMULTI on the underlying interface would cause an
error and the log message:
"allmulti touches root, set allmulti failed."
Signed-off-by: Peter Christensen <pch@ordbogen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 9 May 2014 12:45:00 +0000 (14:45 +0200)]
net: cdc_mbim: handle unaccelerated VLAN tagged frames
[ Upstream commit
6b5eeb7f874b689403e52a646e485d0191ab9507 ]
This driver maps 802.1q VLANs to MBIM sessions. The mapping is based on
a bogus assumption that all tagged frames will use the acceleration API
because we enable NETIF_F_HW_VLAN_CTAG_TX. This fails for e.g. frames
tagged in userspace using packet sockets. Such frames will erroneously
be considered as untagged and silently dropped based on not being IP.
Fix by falling back to looking into the ethernet header for a tag if no
accelerated tag was found.
Fixes:
a82c7ce5bc5b ("net: cdc_ncm: map MBIM IPS SessionID to VLAN ID")
Cc: Greg Suarez <gsuarez@smithmicro.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sergey Popovich [Tue, 6 May 2014 15:23:08 +0000 (18:23 +0300)]
ipv4: fib_semantics: increment fib_info_cnt after fib_info allocation
[ Upstream commit
aeefa1ecfc799b0ea2c4979617f14cecd5cccbfd ]
Increment fib_info_cnt in fib_create_info() right after successfuly
alllocating fib_info structure, overwise fib_metrics allocation failure
leads to fib_info_cnt incorrectly decremented in free_fib_info(), called
on error path from fib_create_info().
Signed-off-by: Sergey Popovich <popovich_sergei@mail.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Florian Westphal [Sun, 4 May 2014 22:03:34 +0000 (00:03 +0200)]
net: ipv6: send pkttoobig immediately if orig frag size > mtu
[ Upstream commit
418a31561d594a2b636c1e2fa94ecd9e1245abb1 ]
If conntrack defragments incoming ipv6 frags it stores largest original
frag size in ip6cb and sets ->local_df.
We must thus first test the largest original frag size vs. mtu, and not
vice versa.
Without this patch PKTTOOBIG is still generated in ip6_fragment() later
in the stack, but
1) IPSTATS_MIB_INTOOBIGERRORS won't increment
2) packet did (needlessly) traverse netfilter postrouting hook.
Fixes:
fe6cc55f3a9 ("net: ip, ipv6: handle gso skbs in forwarding path")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Florian Westphal [Sun, 4 May 2014 21:24:31 +0000 (23:24 +0200)]
net: ipv4: ip_forward: fix inverted local_df test
[ Upstream commit
ca6c5d4ad216d5942ae544bbf02503041bd802aa ]
local_df means 'ignore DF bit if set', so if its set we're
allowed to perform ip fragmentation.
This wasn't noticed earlier because the output path also drops such skbs
(and emits needed icmp error) and because netfilter ip defrag did not
set local_df until couple of days ago.
Only difference is that DF-packets-larger-than MTU now discarded
earlier (f.e. we avoid pointless netfilter postrouting trip).
While at it, drop the repeated test ip_exceeds_mtu, checking it once
is enough...
Fixes:
fe6cc55f3a9 ("net: ip, ipv6: handle gso skbs in forwarding path")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Sat, 3 May 2014 14:12:47 +0000 (16:12 +0200)]
net: cdc_mbim: __vlan_find_dev_deep need rcu_read_lock
[ Upstream commit
4f4178f3bb1f470d7fb863ec531e08e20a0fd51c ]
Fixes this warning introduced by commit
5b8f15f78e6f
("net: cdc_mbim: handle IPv6 Neigbor Solicitations"):
===============================
[ INFO: suspicious RCU usage. ]
3.15.0-rc3 #213 Tainted: G W O
-------------------------------
net/8021q/vlan_core.c:69 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 1
no locks held by ksoftirqd/0/3.
stack backtrace:
CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G W O 3.15.0-rc3 #213
Hardware name: LENOVO 2776LEG/2776LEG, BIOS 6EET55WW (3.15 ) 12/19/2011
0000000000000001 ffff880232533bf0 ffffffff813a5ee6 0000000000000006
ffff880232530090 ffff880232533c20 ffffffff81076b94 0000000000000081
0000000000000000 ffff8802085ac000 ffff88007fc8ea00 ffff880232533c50
Call Trace:
[<
ffffffff813a5ee6>] dump_stack+0x4e/0x68
[<
ffffffff81076b94>] lockdep_rcu_suspicious+0xfa/0x103
[<
ffffffff813978a6>] __vlan_find_dev_deep+0x54/0x94
[<
ffffffffa04a1938>] cdc_mbim_rx_fixup+0x379/0x66a [cdc_mbim]
[<
ffffffff813ab76f>] ? _raw_spin_unlock_irqrestore+0x3a/0x49
[<
ffffffff81079671>] ? trace_hardirqs_on_caller+0x192/0x1a1
[<
ffffffffa059bd10>] usbnet_bh+0x59/0x287 [usbnet]
[<
ffffffff8104067d>] tasklet_action+0xbb/0xcd
[<
ffffffff81040057>] __do_softirq+0x14c/0x30d
[<
ffffffff81040237>] run_ksoftirqd+0x1f/0x50
[<
ffffffff8105f13e>] smpboot_thread_fn+0x172/0x18e
[<
ffffffff8105efcc>] ? SyS_setgroups+0xdf/0xdf
[<
ffffffff810594b0>] kthread+0xb5/0xbd
[<
ffffffff813a84b1>] ? __wait_for_common+0x13b/0x170
[<
ffffffff810593fb>] ? __kthread_parkme+0x5c/0x5c
[<
ffffffff813b147c>] ret_from_fork+0x7c/0xb0
[<
ffffffff810593fb>] ? __kthread_parkme+0x5c/0x5c
Fixes:
5b8f15f78e6f ("net: cdc_mbim: handle IPv6 Neigbor Solicitations")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Timo Teräs [Fri, 16 May 2014 05:34:39 +0000 (08:34 +0300)]
ipv4: ip_tunnels: disable cache for nbma gre tunnels
[ Upstream commit
22fb22eaebf4d16987f3fd9c3484c436ee0badf2 ]
The connected check fails to check for ip_gre nbma mode tunnels
properly. ip_gre creates temporary tnl_params with daddr specified
to pass-in the actual target on per-packet basis from neighbor
layer. Detect these tunnels by inspecting the actual tunnel
configuration.
Minimal test case:
ip route add 192.168.1.1/32 via 10.0.0.1
ip route add 192.168.1.2/32 via 10.0.0.2
ip tunnel add nbma0 mode gre key 1 tos c0
ip addr add 172.17.0.0/16 dev nbma0
ip link set nbma0 up
ip neigh add 172.17.0.1 lladdr 192.168.1.1 dev nbma0
ip neigh add 172.17.0.2 lladdr 192.168.1.2 dev nbma0
ping 172.17.0.1
ping 172.17.0.2
The second ping should be going to 192.168.1.2 and head 10.0.0.2;
but cached gre tunnel level route is used and it's actually going
to 192.168.1.1 via 10.0.0.1.
The lladdr's need to go to separate dst for the bug to trigger.
Test case uses separate route entries, but this can also happen
when the route entry is same: if there is a nexthop exception or
the GRE tunnel is IPsec'ed in which case the dst points to xfrm
bundle unique to the gre lladdr.
Fixes:
7d442fab0a67 ("ipv4: Cache dst in tunnels")
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Cc: Tom Herbert <therbert@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ying Cai [Sun, 4 May 2014 22:20:04 +0000 (15:20 -0700)]
ip_tunnel: Set network header properly for IP_ECN_decapsulate()
[ Upstream commit
e96f2e7c430014eff52c93cabef1ad4f42ed0db1 ]
In ip_tunnel_rcv(), set skb->network_header to inner IP header
before IP_ECN_decapsulate().
Without the fix, IP_ECN_decapsulate() takes outer IP header as
inner IP header, possibly causing error messages or packet drops.
Note that this skb_reset_network_header() call was in this spot when
the original feature for checking consistency of ECN bits through
tunnels was added in
eccc1bb8d4b4 ("tunnel: drop packet if ECN present
with not-ECT"). It was only removed from this spot in
3d7b46cd20e3
("ip_tunnel: push generic protocol handling to ip_tunnel module.").
Fixes:
3d7b46cd20e3 ("ip_tunnel: push generic protocol handling to ip_tunnel module.")
Reported-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Ying Cai <ycai@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eyal Perry [Sun, 4 May 2014 14:07:25 +0000 (17:07 +0300)]
net/mlx4_core: Don't issue PCIe speed/width checks for VFs
[ Upstream commit
83d3459a5928f18c9344683e31bc2a7c3c25562a ]
Carrying out PCI speed/width checks through pcie_get_minimum_link()
on VFs yield wrong results, so remove them.
Fixes: b912b2f ('net/mlx4_core: Warn if device doesn't have enough PCI bandwidth')
Signed-off-by: Eyal Perry <eyalpe@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 2 May 2014 21:27:00 +0000 (23:27 +0200)]
net: cdc_ncm: fix buffer overflow
[ Upstream commit
9becd707841207652449a8dfd90fe9c476d88546 ]
Commit
4d619f625a60 ("net: cdc_ncm: no point in filling up the NTBs
if we send ZLPs") changed the padding logic for devices with the ZLP
flag set. This meant that frames of any size will be sent without
additional padding, except for the single byte added if the size is
a multiple of the USB packet size. But if the unpadded size is
identical to the maximum frame size, and the maximum size is a
multiplum of the USB packet size, then this one-byte padding will
overflow the buffer.
Prevent padding if already at maximum frame size, letting usbnet
transmit a ZLP instead in this case.
Fixes:
4d619f625a60 ("net: cdc_ncm: no point in filling up the NTBs if we send ZLPs")
Reported by: Yu-an Shih <yshih@nvidia.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andy King [Thu, 1 May 2014 22:20:43 +0000 (15:20 -0700)]
vsock: Make transport the proto owner
[ Upstream commit
2c4a336e0a3e203fab6aa8d8f7bb70a0ad968a6b ]
Right now the core vsock module is the owner of the proto family. This
means there's nothing preventing the transport module from unloading if
there are open sockets, which results in a panic. Fix that by allowing
the transport to be the owner, which will refcount it properly.
Includes version bump to 1.0.1.0-k
Passes checkpatch this time, I swear...
Acked-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Andy King <acking@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Fastabend [Thu, 1 May 2014 16:23:06 +0000 (09:23 -0700)]
net: sched: lock imbalance in hhf qdisc
[ Upstream commit
f6a082fed1e6407c2f4437d0d963b1bcbe5f9f58 ]
hhf_change() takes the sch_tree_lock and releases it but misses the
error cases. Fix the missed case here.
To reproduce try a command like this,
# tc qdisc change dev p3p2 root hhf quantum 40960 non_hh_weight 300000
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Liu Yu [Wed, 30 Apr 2014 09:34:09 +0000 (17:34 +0800)]
tcp_cubic: fix the range of delayed_ack
[ Upstream commit
0cda345d1b2201dd15591b163e3c92bad5191745 ]
commit
b9f47a3aaeab (tcp_cubic: limit delayed_ack ratio to prevent
divide error) try to prevent divide error, but there is still a little
chance that delayed_ack can reach zero. In case the param cnt get
negative value, then ratio+cnt would overflow and may happen to be zero.
As a result, min(ratio, ACK_RATIO_LIMIT) will calculate to be zero.
In some old kernels, such as 2.6.32, there is a bug that would
pass negative param, which then ultimately leads to this divide error.
commit
5b35e1e6e9c (tcp: fix tcp_trim_head() to adjust segment count
with skb MSS) fixed the negative param issue. However,
it's safe that we fix the range of delayed_ack as well,
to make sure we do not hit a divide by zero.
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Liu Yu <allanyuliu@tencent.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Tue, 29 Apr 2014 14:09:51 +0000 (10:09 -0400)]
Revert "macvlan : fix checksums error when we are in bridge mode"
[ Upstream commit
f114890cdf84d753f6b41cd0cc44ba51d16313da ]
This reverts commit
12a2856b604476c27d85a5f9a57ae1661fc46019.
The commit above doesn't appear to be necessary any more as the
checksums appear to be correctly computed/validated.
Additionally the above commit breaks kvm configurations where
one VM is using a device that support checksum offload (virtio) and
the other VM does not.
In this case, packets leaving virtio device will have CHECKSUM_PARTIAL
set. The packets is forwarded to a macvtap that has offload features
turned off. Since we use CHECKSUM_UNNECESSARY, the host does does not
update the checksum and thus a bad checksum is passed up to
the guest.
CC: Daniel Lezcano <daniel.lezcano@free.fr>
CC: Patrick McHardy <kaber@trash.net>
CC: Andrian Nord <nightnord@gmail.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Michael S. Tsirkin <mst@redhat.com>
CC: Jason Wang <jasowang@redhat.com>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Tue, 29 Apr 2014 14:09:50 +0000 (10:09 -0400)]
mactap: Fix checksum errors for non-gso packets in bridge mode
[ Upstream commit
cbdb04279ccaefcc702c8757757eea8ed76e50cf ]
The following is a problematic configuration:
VM1: virtio-net device connected to macvtap0@eth0
VM2: e1000 device connect to macvtap1@eth0
The problem is is that virtio-net supports checksum offloading
and thus sends the packets to the host with CHECKSUM_PARTIAL set.
On the other hand, e1000 does not support any acceleration.
For small TCP packets (and this includes the 3-way handshake),
e1000 ends up receiving packets that only have a partial checksum
set. This causes TCP to fail checksum validation and to drop
packets. As a result tcp connections can not be established.
Commit
3e4f8b787370978733ca6cae452720a4f0c296b8
macvtap: Perform GSO on forwarding path.
fixes this issue for large packets wthat will end up undergoing GSO.
This commit adds a check for the non-GSO case and attempts to
compute the checksum for partially checksummed packets in the
non-GSO case.
CC: Daniel Lezcano <daniel.lezcano@free.fr>
CC: Patrick McHardy <kaber@trash.net>
CC: Andrian Nord <nightnord@gmail.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Michael S. Tsirkin <mst@redhat.com>
CC: Jason Wang <jasowang@redhat.com>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Karl Heiss [Fri, 25 Apr 2014 18:26:30 +0000 (14:26 -0400)]
net: sctp: Don't transition to PF state when transport has exhausted 'Path.Max.Retrans'.
[ Upstream commit
8c2eab9097dba50bcd73ed4632baccc3f34857f9 ]
Don't transition to the PF state on every strike after 'Path.Max.Retrans'.
Per draft-ietf-tsvwg-sctp-failover-03 Section 5.1.6:
Additional (PMR - PFMR) consecutive timeouts on a PF destination
confirm the path failure, upon which the destination transitions to the
Inactive state. As described in [RFC4960], the sender (i) SHOULD notify
ULP about this state transition, and (ii) transmit heartbeats to the
Inactive destination at a lower frequency as described in Section 8.3 of
[RFC4960].
This also prevents sending SCTP_ADDR_UNREACHABLE to the user as the state
bounces between SCTP_INACTIVE and SCTP_PF for each subsequent strike.
Signed-off-by: Karl Heiss <kheiss@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Oliver Hartkopp [Sat, 26 Apr 2014 19:18:32 +0000 (21:18 +0200)]
slip: fix spinlock variant
[ Upstream commit
ddcde142bed44490e338ed1124cb149976d355bb ]
With commit
cc9fa74e2a ("slip/slcan: added locking in wakeup function") a
formerly missing locking was added to slip.c and slcan.c by Andre Naujoks.
Alexander Stein contributed the fix
367525c8c2 ("can: slcan: Fix spinlock
variant") as the kernel lock debugging advised to use spin_lock_bh() instead
of just using spin_lock().
This fix has to be applied to the same code section in slip.c for the same
reason too.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:34 +0000 (19:00 +0200)]
net: qmi_wwan: add a number of Dell devices
[ Upstream commit
6f10c5d1b1aeddb63d33070abb8bc5a177beeb1f ]
Dan writes:
"The Dell drivers use the same configuration for PIDs:
81A2: Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card
81A3: Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card
81A4: Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card
81A8: Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card
81A9: Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card
These devices are all clearly Sierra devices, but are also definitely
Gobi-based. The A8 might be the MC7700/7710 and A9 is likely a MC7750.
>From DellGobi5kSetup.exe from the Dell drivers:
usbif0: serial/firmware loader?
usbif2: nmea
usbif3: modem/ppp
usbif8: net/QMI"
Reported-by: AceLan Kao <acelan.kao@canonical.com>
Reported-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:33 +0000 (19:00 +0200)]
net: qmi_wwan: add a number of CMOTech devices
[ Upstream commit
41be7d90993b1502d445bfc59e58348c258ce66a ]
A number of older CMOTech modems are based on Qualcomm
chips and exporting a QMI/wwan function.
Reported-by: Lars Melin <larsm17@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:32 +0000 (19:00 +0200)]
net: qmi_wwan: add Alcatel L800MA
[ Upstream commit
75573660c47a0db7cc931dcf154945610e02130a ]
Device interface layout:
0: ff/ff/ff - serial
1: ff/00/00 - serial AT+PPP
2: ff/ff/ff - QMI/wwan
3: 08/06/50 - storage
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:31 +0000 (19:00 +0200)]
net: qmi_wwan: add Olivetti Olicard 500
[ Upstream commit
efc0b25c3add97717ece57bf5319792ca98f348e ]
Device interface layout:
0: ff/ff/ff - serial
1: ff/ff/ff - serial AT+PPP
2: 08/06/50 - storage
3: ff/ff/ff - serial
4: ff/ff/ff - QMI/wwan
Reported-by: Julio Araujo <julio.araujo@wllctel.com.br>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:30 +0000 (19:00 +0200)]
net: qmi_wwan: add Sierra Wireless MC7305/MC7355
[ Upstream commit
9214224e43e4264b02686ea8b455f310935607b5 ]
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:29 +0000 (19:00 +0200)]
net: qmi_wwan: add Sierra Wireless MC73xx
[ Upstream commit
1c138607a7be64074d7fba68d0d533ec38f9d17b ]
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 17:00:28 +0000 (19:00 +0200)]
net: qmi_wwan: add Sierra Wireless EM7355
[ Upstream commit
b85f5deaf052340021d025e120a9858f084a1d79 ]
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Xufeng Zhang [Fri, 25 Apr 2014 08:55:41 +0000 (16:55 +0800)]
sctp: reset flowi4_oif parameter on route lookup
[ Upstream commit
85350871317a5adb35519d9dc6fc9e80809d42ad ]
commit
813b3b5db83 (ipv4: Use caller's on-stack flowi as-is
in output route lookups.) introduces another regression which
is very similar to the problem of commit
e6b45241c (ipv4: reset
flowi parameters on route connect) wants to fix:
Before we call ip_route_output_key() in sctp_v4_get_dst() to
get a dst that matches a bind address as the source address,
we have already called this function previously and the flowi
parameters have been initialized including flowi4_oif, so when
we call this function again, the process in __ip_route_output_key()
will be different because of the setting of flowi4_oif, and we'll
get a networking device which corresponds to the inputted flowi4_oif
as the output device, this is wrong because we'll never hit this
place if the previously returned source address of dst match one
of the bound addresses.
To reproduce this problem, a vlan setting is enough:
# ifconfig eth0 up
# route del default
# vconfig add eth0 2
# vconfig add eth0 3
# ifconfig eth0.2 10.0.1.14 netmask 255.255.255.0
# route add default gw 10.0.1.254 dev eth0.2
# ifconfig eth0.3 10.0.0.14 netmask 255.255.255.0
# ip rule add from 10.0.0.14 table 4
# ip route add table 4 default via 10.0.0.254 src 10.0.0.14 dev eth0.3
# sctp_darn -H 10.0.0.14 -P 36422 -h 10.1.4.134 -p 36422 -s -I
You'll detect that all the flow are routed to eth0.2(10.0.1.254).
Signed-off-by: Xufeng Zhang <xufeng.zhang@windriver.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Toshiaki Makita [Fri, 25 Apr 2014 08:01:18 +0000 (17:01 +0900)]
bridge: Handle IFLA_ADDRESS correctly when creating bridge device
[ Upstream commit
30313a3d5794472c3548d7288e306a5492030370 ]
When bridge device is created with IFLA_ADDRESS, we are not calling
br_stp_change_bridge_id(), which leads to incorrect local fdb
management and bridge id calculation, and prevents us from receiving
frames on the bridge device.
Reported-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kumar Sundararajan [Thu, 24 Apr 2014 13:48:53 +0000 (09:48 -0400)]
ipv6: fib: fix fib dump restart
[ Upstream commit
1c2658545816088477e91860c3a645053719cb54 ]
When the ipv6 fib changes during a table dump, the walk is
restarted and the number of nodes dumped are skipped. But the existing
code doesn't advance to the next node after a node is skipped. This can
cause the dump to loop or produce lots of duplicates when the fib
is modified during the dump.
This change advances the walk to the next node if the current node is
skipped after a restart.
Signed-off-by: Kumar Sundararajan <kumar@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Gibson [Thu, 24 Apr 2014 00:22:36 +0000 (10:22 +1000)]
rtnetlink: Only supply IFLA_VF_PORTS information when RTEXT_FILTER_VF is set
[ Upstream commit
c53864fd60227de025cb79e05493b13f69843971 ]
Since
115c9b81928360d769a76c632bae62d15206a94a (rtnetlink: Fix problem with
buffer allocation), RTM_NEWLINK messages only contain the IFLA_VFINFO_LIST
attribute if they were solicited by a GETLINK message containing an
IFLA_EXT_MASK attribute with the RTEXT_FILTER_VF flag.
That was done because some user programs broke when they received more data
than expected - because IFLA_VFINFO_LIST contains information for each VF
it can become large if there are many VFs.
However, the IFLA_VF_PORTS attribute, supplied for devices which implement
ndo_get_vf_port (currently the 'enic' driver only), has the same problem.
It supplies per-VF information and can therefore become large, but it is
not currently conditional on the IFLA_EXT_MASK value.
Worse, it interacts badly with the existing EXT_MASK handling. When
IFLA_EXT_MASK is not supplied, the buffer for netlink replies is fixed at
NLMSG_GOODSIZE. If the information for IFLA_VF_PORTS exceeds this, then
rtnl_fill_ifinfo() returns -EMSGSIZE on the first message in a packet.
netlink_dump() will misinterpret this as having finished the listing and
omit data for this interface and all subsequent ones. That can cause
getifaddrs(3) to enter an infinite loop.
This patch addresses the problem by only supplying IFLA_VF_PORTS when
IFLA_EXT_MASK is supplied with the RTEXT_FILTER_VF flag set.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Gibson [Thu, 24 Apr 2014 00:22:35 +0000 (10:22 +1000)]
rtnetlink: Warn when interface's information won't fit in our packet
[ Upstream commit
973462bbde79bb827824c73b59027a0aed5c9ca6 ]
Without IFLA_EXT_MASK specified, the information reported for a single
interface in response to RTM_GETLINK is expected to fit within a netlink
packet of NLMSG_GOODSIZE.
If it doesn't, however, things will go badly wrong, When listing all
interfaces, netlink_dump() will incorrectly treat -EMSGSIZE on the first
message in a packet as the end of the listing and omit information for
that interface and all subsequent ones. This can cause getifaddrs(3) to
enter an infinite loop.
This patch won't fix the problem, but it will WARN_ON() making it easier to
track down what's going wrong.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Lutomirski [Thu, 17 Apr 2014 04:41:34 +0000 (21:41 -0700)]
net: Fix ns_capable check in sock_diag_put_filterinfo
[ Upstream commit
78541c1dc60b65ecfce5a6a096fc260219d6784e ]
The caller needs capabilities on the namespace being queried, not on
their own namespace. This is a security bug, although it likely has
only a minor impact.
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Thu, 17 Apr 2014 15:26:50 +0000 (17:26 +0200)]
net: sctp: cache auth_enable per endpoint
[ Upstream commit
b14878ccb7fac0242db82720b784ab62c467c0dc ]
Currently, it is possible to create an SCTP socket, then switch
auth_enable via sysctl setting to 1 and crash the system on connect:
Oops[#1]:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.14.1-mipsgit-
20140415 #1
task:
ffffffff8056ce80 ti:
ffffffff8055c000 task.ti:
ffffffff8055c000
[...]
Call Trace:
[<
ffffffff8043c4e8>] sctp_auth_asoc_set_default_hmac+0x68/0x80
[<
ffffffff8042b300>] sctp_process_init+0x5e0/0x8a4
[<
ffffffff8042188c>] sctp_sf_do_5_1B_init+0x234/0x34c
[<
ffffffff804228c8>] sctp_do_sm+0xb4/0x1e8
[<
ffffffff80425a08>] sctp_endpoint_bh_rcv+0x1c4/0x214
[<
ffffffff8043af68>] sctp_rcv+0x588/0x630
[<
ffffffff8043e8e8>] sctp6_rcv+0x10/0x24
[<
ffffffff803acb50>] ip6_input+0x2c0/0x440
[<
ffffffff8030fc00>] __netif_receive_skb_core+0x4a8/0x564
[<
ffffffff80310650>] process_backlog+0xb4/0x18c
[<
ffffffff80313cbc>] net_rx_action+0x12c/0x210
[<
ffffffff80034254>] __do_softirq+0x17c/0x2ac
[<
ffffffff800345e0>] irq_exit+0x54/0xb0
[<
ffffffff800075a4>] ret_from_irq+0x0/0x4
[<
ffffffff800090ec>] rm7k_wait_irqoff+0x24/0x48
[<
ffffffff8005e388>] cpu_startup_entry+0xc0/0x148
[<
ffffffff805a88b0>] start_kernel+0x37c/0x398
Code:
dd0900b8 000330f8 0126302d <
dcc60000>
50c0fff1 0047182a a48306a0
03e00008 00000000
---[ end trace
b530b0551467f2fd ]---
Kernel panic - not syncing: Fatal exception in interrupt
What happens while auth_enable=0 in that case is, that
ep->auth_hmacs is initialized to NULL in sctp_auth_init_hmacs()
when endpoint is being created.
After that point, if an admin switches over to auth_enable=1,
the machine can crash due to NULL pointer dereference during
reception of an INIT chunk. When we enter sctp_process_init()
via sctp_sf_do_5_1B_init() in order to respond to an INIT chunk,
the INIT verification succeeds and while we walk and process
all INIT params via sctp_process_param() we find that
net->sctp.auth_enable is set, therefore do not fall through,
but invoke sctp_auth_asoc_set_default_hmac() instead, and thus,
dereference what we have set to NULL during endpoint
initialization phase.
The fix is to make auth_enable immutable by caching its value
during endpoint initialization, so that its original value is
being carried along until destruction. The bug seems to originate
from the very first days.
Fix in joint work with Daniel Borkmann.
Reported-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ivan Vecera [Thu, 17 Apr 2014 12:51:08 +0000 (14:51 +0200)]
tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled
The patch fixes a problem with dropped jumbo frames after usage of
'ethtool -G ... rx'.
Scenario:
1. ip link set eth0 up
2. ethtool -G eth0 rx N # <- This zeroes rx-jumbo
3. ip link set mtu 9000 dev eth0
The ethtool command set rx_jumbo_pending to zero so any received jumbo
packets are dropped and you need to use 'ethtool -G eth0 rx-jumbo N'
to workaround the issue.
The patch changes the logic so rx_jumbo_pending value is changed only if
jumbo frames are enabled (MTU > 1500).
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Fri, 16 May 2014 21:04:56 +0000 (17:04 -0400)]
macvlan: Fix lockdep warnings with stacked macvlan devices
[ Upstream commit
c674ac30c549596295eb0a5af7f4714c0b905b6f ]
Macvlan devices try to avoid stacking, but that's not always
successfull or even desired. As an example, the following
configuration is perefectly legal and valid:
eth0 <--- macvlan0 <---- vlan0.10 <--- macvlan1
However, this configuration produces the following lockdep
trace:
[ 115.620418] ======================================================
[ 115.620477] [ INFO: possible circular locking dependency detected ]
[ 115.620516] 3.15.0-rc1+ #24 Not tainted
[ 115.620540] -------------------------------------------------------
[ 115.620577] ip/1704 is trying to acquire lock:
[ 115.620604] (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff815df49c>] dev_uc_sync+0x3c/0x80
[ 115.620686]
but task is already holding lock:
[ 115.620723] (&macvlan_netdev_addr_lock_key){+.....}, at: [<
ffffffff815da5be>] dev_set_rx_mode+0x1e/0x40
[ 115.620795]
which lock already depends on the new lock.
[ 115.620853]
the existing dependency chain (in reverse order) is:
[ 115.620894]
-> #1 (&macvlan_netdev_addr_lock_key){+.....}:
[ 115.620935] [<
ffffffff810d57f2>] lock_acquire+0xa2/0x130
[ 115.620974] [<
ffffffff816f62e7>] _raw_spin_lock_nested+0x37/0x50
[ 115.621019] [<
ffffffffa07296c3>] vlan_dev_set_rx_mode+0x53/0x110 [8021q]
[ 115.621066] [<
ffffffff815da557>] __dev_set_rx_mode+0x57/0xa0
[ 115.621105] [<
ffffffff815da5c6>] dev_set_rx_mode+0x26/0x40
[ 115.621143] [<
ffffffff815da6be>] __dev_open+0xde/0x140
[ 115.621174] [<
ffffffff815da9ad>] __dev_change_flags+0x9d/0x170
[ 115.621174] [<
ffffffff815daaa9>] dev_change_flags+0x29/0x60
[ 115.621174] [<
ffffffff815e7f11>] do_setlink+0x321/0x9a0
[ 115.621174] [<
ffffffff815ea59f>] rtnl_newlink+0x51f/0x730
[ 115.621174] [<
ffffffff815e6e75>] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [<
ffffffff81608b19>] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [<
ffffffff815e6dca>] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [<
ffffffff81608150>] netlink_unicast+0xf0/0x1c0
[ 115.621174] [<
ffffffff8160851f>] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [<
ffffffff815bc9db>] sock_sendmsg+0x8b/0xc0
[ 115.621174] [<
ffffffff815bd4b9>] ___sys_sendmsg+0x369/0x380
[ 115.621174] [<
ffffffff815bdbb2>] __sys_sendmsg+0x42/0x80
[ 115.621174] [<
ffffffff815bdc02>] SyS_sendmsg+0x12/0x20
[ 115.621174] [<
ffffffff816ffd69>] system_call_fastpath+0x16/0x1b
[ 115.621174]
-> #0 (&vlan_netdev_addr_lock_key/1){+.....}:
[ 115.621174] [<
ffffffff810d4d43>] __lock_acquire+0x1773/0x1a60
[ 115.621174] [<
ffffffff810d57f2>] lock_acquire+0xa2/0x130
[ 115.621174] [<
ffffffff816f62e7>] _raw_spin_lock_nested+0x37/0x50
[ 115.621174] [<
ffffffff815df49c>] dev_uc_sync+0x3c/0x80
[ 115.621174] [<
ffffffffa0696d2a>] macvlan_set_mac_lists+0xca/0x110 [macvlan]
[ 115.621174] [<
ffffffff815da557>] __dev_set_rx_mode+0x57/0xa0
[ 115.621174] [<
ffffffff815da5c6>] dev_set_rx_mode+0x26/0x40
[ 115.621174] [<
ffffffff815da6be>] __dev_open+0xde/0x140
[ 115.621174] [<
ffffffff815da9ad>] __dev_change_flags+0x9d/0x170
[ 115.621174] [<
ffffffff815daaa9>] dev_change_flags+0x29/0x60
[ 115.621174] [<
ffffffff815e7f11>] do_setlink+0x321/0x9a0
[ 115.621174] [<
ffffffff815ea59f>] rtnl_newlink+0x51f/0x730
[ 115.621174] [<
ffffffff815e6e75>] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [<
ffffffff81608b19>] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [<
ffffffff815e6dca>] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [<
ffffffff81608150>] netlink_unicast+0xf0/0x1c0
[ 115.621174] [<
ffffffff8160851f>] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [<
ffffffff815bc9db>] sock_sendmsg+0x8b/0xc0
[ 115.621174] [<
ffffffff815bd4b9>] ___sys_sendmsg+0x369/0x380
[ 115.621174] [<
ffffffff815bdbb2>] __sys_sendmsg+0x42/0x80
[ 115.621174] [<
ffffffff815bdc02>] SyS_sendmsg+0x12/0x20
[ 115.621174] [<
ffffffff816ffd69>] system_call_fastpath+0x16/0x1b
[ 115.621174]
other info that might help us debug this:
[ 115.621174] Possible unsafe locking scenario:
[ 115.621174] CPU0 CPU1
[ 115.621174] ---- ----
[ 115.621174] lock(&macvlan_netdev_addr_lock_key);
[ 115.621174] lock(&vlan_netdev_addr_lock_key/1);
[ 115.621174] lock(&macvlan_netdev_addr_lock_key);
[ 115.621174] lock(&vlan_netdev_addr_lock_key/1);
[ 115.621174]
*** DEADLOCK ***
[ 115.621174] 2 locks held by ip/1704:
[ 115.621174] #0: (rtnl_mutex){+.+.+.}, at: [<
ffffffff815e6dbb>] rtnetlink_rcv+0x1b/0x40
[ 115.621174] #1: (&macvlan_netdev_addr_lock_key){+.....}, at: [<
ffffffff815da5be>] dev_set_rx_mode+0x1e/0x40
[ 115.621174]
stack backtrace:
[ 115.621174] CPU: 3 PID: 1704 Comm: ip Not tainted 3.15.0-rc1+ #24
[ 115.621174] Hardware name: Hewlett-Packard HP xw8400 Workstation/0A08h, BIOS 786D5 v02.38 10/25/2010
[ 115.621174]
ffffffff82339ae0 ffff880465f79568 ffffffff816ee20c ffffffff82339ae0
[ 115.621174]
ffff880465f795a8 ffffffff816e9e1b ffff880465f79600 ffff880465b019c8
[ 115.621174]
0000000000000001 0000000000000002 ffff880465b019c8 ffff880465b01230
[ 115.621174] Call Trace:
[ 115.621174] [<
ffffffff816ee20c>] dump_stack+0x4d/0x66
[ 115.621174] [<
ffffffff816e9e1b>] print_circular_bug+0x200/0x20e
[ 115.621174] [<
ffffffff810d4d43>] __lock_acquire+0x1773/0x1a60
[ 115.621174] [<
ffffffff810d3172>] ? trace_hardirqs_on_caller+0xb2/0x1d0
[ 115.621174] [<
ffffffff810d57f2>] lock_acquire+0xa2/0x130
[ 115.621174] [<
ffffffff815df49c>] ? dev_uc_sync+0x3c/0x80
[ 115.621174] [<
ffffffff816f62e7>] _raw_spin_lock_nested+0x37/0x50
[ 115.621174] [<
ffffffff815df49c>] ? dev_uc_sync+0x3c/0x80
[ 115.621174] [<
ffffffff815df49c>] dev_uc_sync+0x3c/0x80
[ 115.621174] [<
ffffffffa0696d2a>] macvlan_set_mac_lists+0xca/0x110 [macvlan]
[ 115.621174] [<
ffffffff815da557>] __dev_set_rx_mode+0x57/0xa0
[ 115.621174] [<
ffffffff815da5c6>] dev_set_rx_mode+0x26/0x40
[ 115.621174] [<
ffffffff815da6be>] __dev_open+0xde/0x140
[ 115.621174] [<
ffffffff815da9ad>] __dev_change_flags+0x9d/0x170
[ 115.621174] [<
ffffffff815daaa9>] dev_change_flags+0x29/0x60
[ 115.621174] [<
ffffffff811e1db1>] ? mem_cgroup_bad_page_check+0x21/0x30
[ 115.621174] [<
ffffffff815e7f11>] do_setlink+0x321/0x9a0
[ 115.621174] [<
ffffffff810d394c>] ? __lock_acquire+0x37c/0x1a60
[ 115.621174] [<
ffffffff815ea59f>] rtnl_newlink+0x51f/0x730
[ 115.621174] [<
ffffffff815ea169>] ? rtnl_newlink+0xe9/0x730
[ 115.621174] [<
ffffffff815e6e75>] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [<
ffffffff810d329d>] ? trace_hardirqs_on+0xd/0x10
[ 115.621174] [<
ffffffff815e6dbb>] ? rtnetlink_rcv+0x1b/0x40
[ 115.621174] [<
ffffffff815e6de0>] ? rtnetlink_rcv+0x40/0x40
[ 115.621174] [<
ffffffff81608b19>] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [<
ffffffff815e6dca>] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [<
ffffffff81608150>] netlink_unicast+0xf0/0x1c0
[ 115.621174] [<
ffffffff8160851f>] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [<
ffffffff815bc9db>] sock_sendmsg+0x8b/0xc0
[ 115.621174] [<
ffffffff8119d4af>] ? might_fault+0x5f/0xb0
[ 115.621174] [<
ffffffff8119d4f8>] ? might_fault+0xa8/0xb0
[ 115.621174] [<
ffffffff8119d4af>] ? might_fault+0x5f/0xb0
[ 115.621174] [<
ffffffff815cb51e>] ? verify_iovec+0x5e/0xe0
[ 115.621174] [<
ffffffff815bd4b9>] ___sys_sendmsg+0x369/0x380
[ 115.621174] [<
ffffffff816faa0d>] ? __do_page_fault+0x11d/0x570
[ 115.621174] [<
ffffffff810cfe9f>] ? up_read+0x1f/0x40
[ 115.621174] [<
ffffffff816fab04>] ? __do_page_fault+0x214/0x570
[ 115.621174] [<
ffffffff8120a10b>] ? mntput_no_expire+0x6b/0x1c0
[ 115.621174] [<
ffffffff8120a0b7>] ? mntput_no_expire+0x17/0x1c0
[ 115.621174] [<
ffffffff8120a284>] ? mntput+0x24/0x40
[ 115.621174] [<
ffffffff815bdbb2>] __sys_sendmsg+0x42/0x80
[ 115.621174] [<
ffffffff815bdc02>] SyS_sendmsg+0x12/0x20
[ 115.621174] [<
ffffffff816ffd69>] system_call_fastpath+0x16/0x1b
Fix this by correctly providing macvlan lockdep class.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Fri, 16 May 2014 21:04:55 +0000 (17:04 -0400)]
vlan: Fix lockdep warning with stacked vlan devices.
[ Upstream commit
d38569ab2bba6e6b3233acfc3a84cdbcfbd1f79f ]
This reverts commit
dc8eaaa006350d24030502a4521542e74b5cb39f.
vlan: Fix lockdep warning when vlan dev handle notification
Instead we use the new new API to find the lock subclass of
our vlan device. This way we can support configurations where
vlans are interspersed with other devices:
bond -> vlan -> macvlan -> vlan
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Fri, 16 May 2014 21:04:54 +0000 (17:04 -0400)]
net: Allow for more then a single subclass for netif_addr_lock
[ Upstream commit
25175ba5c9bff9aaf0229df34bb5d54c81633ec3 ]
Currently netif_addr_lock_nested assumes that there can be only
a single nesting level between 2 devices. However, if we
have multiple devices of the same type stacked, this fails.
For example:
eth0 <-- vlan0.10 <-- vlan0.10.20
A more complicated configuration may stack more then one type of
device in different order.
Ex:
eth0 <-- vlan0.10 <-- macvlan0 <-- vlan1.10.20 <-- macvlan1
This patch adds an ndo_* function that allows each stackable
device to report its nesting level. If the device doesn't
provide this function default subclass of 1 is used.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Fri, 16 May 2014 21:04:53 +0000 (17:04 -0400)]
net: Find the nesting level of a given device by type.
[ Upstream commit
4085ebe8c31face855fd01ee40372cb4aab1df3a ]
Multiple devices in the kernel can be stacked/nested and they
need to know their nesting level for the purposes of lockdep.
This patch provides a generic function that determines a nesting
level of a particular device by its type (ex: vlan, macvlan, etc).
We only care about nesting of the same type of devices.
For example:
eth0 <- vlan0.10 <- macvlan0 <- vlan1.20
The nesting level of vlan1.20 would be 1, since there is another vlan
in the stack under it.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dingtianhong [Thu, 17 Apr 2014 10:40:36 +0000 (18:40 +0800)]
vlan: Fix lockdep warning when vlan dev handle notification
[ Upstream commit
dc8eaaa006350d24030502a4521542e74b5cb39f ]
When I open the LOCKDEP config and run these steps:
modprobe 8021q
vconfig add eth2 20
vconfig add eth2.20 30
ifconfig eth2 xx.xx.xx.xx
then the Call Trace happened:
[32524.386288] =============================================
[32524.386293] [ INFO: possible recursive locking detected ]
[32524.386298] 3.14.0-rc2-0.7-default+ #35 Tainted: G O
[32524.386302] ---------------------------------------------
[32524.386306] ifconfig/3103 is trying to acquire lock:
[32524.386310] (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff814275f4>] dev_mc_sync+0x64/0xb0
[32524.386326]
[32524.386326] but task is already holding lock:
[32524.386330] (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff8141af83>] dev_set_rx_mode+0x23/0x40
[32524.386341]
[32524.386341] other info that might help us debug this:
[32524.386345] Possible unsafe locking scenario:
[32524.386345]
[32524.386350] CPU0
[32524.386352] ----
[32524.386354] lock(&vlan_netdev_addr_lock_key/1);
[32524.386359] lock(&vlan_netdev_addr_lock_key/1);
[32524.386364]
[32524.386364] *** DEADLOCK ***
[32524.386364]
[32524.386368] May be due to missing lock nesting notation
[32524.386368]
[32524.386373] 2 locks held by ifconfig/3103:
[32524.386376] #0: (rtnl_mutex){+.+.+.}, at: [<
ffffffff81431d42>] rtnl_lock+0x12/0x20
[32524.386387] #1: (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff8141af83>] dev_set_rx_mode+0x23/0x40
[32524.386398]
[32524.386398] stack backtrace:
[32524.386403] CPU: 1 PID: 3103 Comm: ifconfig Tainted: G O 3.14.0-rc2-0.7-default+ #35
[32524.386409] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[32524.386414]
ffffffff81ffae40 ffff8800d9625ae8 ffffffff814f68a2 ffff8800d9625bc8
[32524.386421]
ffffffff810a35fb ffff8800d8a8d9d0 00000000d9625b28 ffff8800d8a8e5d0
[32524.386428]
000003cc00000000 0000000000000002 ffff8800d8a8e5f8 0000000000000000
[32524.386435] Call Trace:
[32524.386441] [<
ffffffff814f68a2>] dump_stack+0x6a/0x78
[32524.386448] [<
ffffffff810a35fb>] __lock_acquire+0x7ab/0x1940
[32524.386454] [<
ffffffff810a323a>] ? __lock_acquire+0x3ea/0x1940
[32524.386459] [<
ffffffff810a4874>] lock_acquire+0xe4/0x110
[32524.386464] [<
ffffffff814275f4>] ? dev_mc_sync+0x64/0xb0
[32524.386471] [<
ffffffff814fc07a>] _raw_spin_lock_nested+0x2a/0x40
[32524.386476] [<
ffffffff814275f4>] ? dev_mc_sync+0x64/0xb0
[32524.386481] [<
ffffffff814275f4>] dev_mc_sync+0x64/0xb0
[32524.386489] [<
ffffffffa0500cab>] vlan_dev_set_rx_mode+0x2b/0x50 [8021q]
[32524.386495] [<
ffffffff8141addf>] __dev_set_rx_mode+0x5f/0xb0
[32524.386500] [<
ffffffff8141af8b>] dev_set_rx_mode+0x2b/0x40
[32524.386506] [<
ffffffff8141b3cf>] __dev_open+0xef/0x150
[32524.386511] [<
ffffffff8141b177>] __dev_change_flags+0xa7/0x190
[32524.386516] [<
ffffffff8141b292>] dev_change_flags+0x32/0x80
[32524.386524] [<
ffffffff8149ca56>] devinet_ioctl+0x7d6/0x830
[32524.386532] [<
ffffffff81437b0b>] ? dev_ioctl+0x34b/0x660
[32524.386540] [<
ffffffff814a05b0>] inet_ioctl+0x80/0xa0
[32524.386550] [<
ffffffff8140199d>] sock_do_ioctl+0x2d/0x60
[32524.386558] [<
ffffffff81401a52>] sock_ioctl+0x82/0x2a0
[32524.386568] [<
ffffffff811a7123>] do_vfs_ioctl+0x93/0x590
[32524.386578] [<
ffffffff811b2705>] ? rcu_read_lock_held+0x45/0x50
[32524.386586] [<
ffffffff811b39e5>] ? __fget_light+0x105/0x110
[32524.386594] [<
ffffffff811a76b1>] SyS_ioctl+0x91/0xb0
[32524.386604] [<
ffffffff815057e2>] system_call_fastpath+0x16/0x1b
========================================================================
The reason is that all of the addr_lock_key for vlan dev have the same class,
so if we change the status for vlan dev, the vlan dev and its real dev will
hold the same class of addr_lock_key together, so the warning happened.
we should distinguish the lock depth for vlan dev and its real dev.
v1->v2: Convert the vlan_netdev_addr_lock_key to an array of eight elements, which
could support to add 8 vlan id on a same vlan dev, I think it is enough for current
scene, because a netdev's name is limited to IFNAMSIZ which could not hold 8 vlan id,
and the vlan dev would not meet the same class key with its real dev.
The new function vlan_dev_get_lockdep_subkey() will return the subkey and make the vlan
dev could get a suitable class key.
v2->v3: According David's suggestion, I use the subclass to distinguish the lock key for vlan dev
and its real dev, but it make no sense, because the difference for subclass in the
lock_class_key doesn't mean that the difference class for lock_key, so I use lock_depth
to distinguish the different depth for every vlan dev, the same depth of the vlan dev
could have the same lock_class_key, I import the MAX_LOCK_DEPTH from the include/linux/sched.h,
I think it is enough here, the lockdep should never exceed that value.
v3->v4: Add a huge array of locking keys will waste static kernel memory and is not a appropriate method,
we could use _nested() variants to fix the problem, calculate the depth for every vlan dev,
and use the depth as the subclass for addr_lock_key.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicolas Dichtel [Mon, 14 Apr 2014 15:11:38 +0000 (17:11 +0200)]
ip6_gre: don't allow to remove the fb_tunnel_dev
[ Upstream commit
54d63f787b652755e66eb4dd8892ee6d3f5197fc ]
It's possible to remove the FB tunnel with the command 'ip link del ip6gre0' but
this is unsafe, the module always supposes that this device exists. For example,
ip6gre_tunnel_lookup() may use it unconditionally.
Let's add a rtnl handler for dellink, which will never remove the FB tunnel (we
let ip6gre_destroy_tunnels() do the job).
Introduced by commit
c12b395a4664 ("gre: Support GRE over IPv6").
CC: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vlad Yasevich [Mon, 14 Apr 2014 21:37:26 +0000 (17:37 -0400)]
net: Start with correct mac_len in skb_network_protocol
[ Upstream commit
1e785f48d29a09b6cf96db7b49b6320dada332e1 ]
Sometimes, when the packet arrives at skb_mac_gso_segment()
its skb->mac_len already accounts for some of the mac lenght
headers in the packet. This seems to happen when forwarding
through and OpenSSL tunnel.
When we start looking for any vlan headers in skb_network_protocol()
we seem to ignore any of the already known mac headers and start
with an ETH_HLEN. This results in an incorrect offset, dropped
TSO frames and general slowness of the connection.
We can start counting from the known skb->mac_len
and return at least that much if all mac level headers
are known and accounted for.
Fixes:
53d6471cef17262d3ad1c7ce8982a234244f68ec (net: Account for all vlan headers in skb_mac_gso_segment)
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Daniel Borkman <dborkman@redhat.com>
Tested-by: Martin Filip <nexus+kernel@smoula.net>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniel Borkmann [Mon, 14 Apr 2014 19:45:17 +0000 (21:45 +0200)]
Revert "net: sctp: Fix a_rwnd/rwnd management to reflect real state of the receiver's buffer"
[ Upstream commit
362d52040c71f6e8d8158be48c812d7729cb8df1 ]
This reverts commit
ef2820a735f7 ("net: sctp: Fix a_rwnd/rwnd management
to reflect real state of the receiver's buffer") as it introduced a
serious performance regression on SCTP over IPv4 and IPv6, though a not
as dramatic on the latter. Measurements are on 10Gbit/s with ixgbe NICs.
Current state:
[root@Lab200slot2 ~]# iperf3 --sctp -4 -c 192.168.241.3 -V -l 1452 -t 60
iperf version 3.0.1 (10 January 2014)
Linux Lab200slot2 3.14.0 #1 SMP Thu Apr 3 23:18:29 EDT 2014 x86_64
Time: Fri, 11 Apr 2014 17:56:21 GMT
Connecting to host 192.168.241.3, port 5201
Cookie: Lab200slot2.
1397238981.812898.548918
[ 4] local 192.168.241.2 port 38616 connected to 192.168.241.3 port 5201
Starting Test: protocol: SCTP, 1 streams, 1452 byte blocks, omitting 0 seconds, 60 second test
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.09 sec 20.8 MBytes 161 Mbits/sec
[ 4] 1.09-2.13 sec 10.8 MBytes 86.8 Mbits/sec
[ 4] 2.13-3.15 sec 3.57 MBytes 29.5 Mbits/sec
[ 4] 3.15-4.16 sec 4.33 MBytes 35.7 Mbits/sec
[ 4] 4.16-6.21 sec 10.4 MBytes 42.7 Mbits/sec
[ 4] 6.21-6.21 sec 0.00 Bytes 0.00 bits/sec
[ 4] 6.21-7.35 sec 34.6 MBytes 253 Mbits/sec
[ 4] 7.35-11.45 sec 22.0 MBytes 45.0 Mbits/sec
[ 4] 11.45-11.45 sec 0.00 Bytes 0.00 bits/sec
[ 4] 11.45-11.45 sec 0.00 Bytes 0.00 bits/sec
[ 4] 11.45-11.45 sec 0.00 Bytes 0.00 bits/sec
[ 4] 11.45-12.51 sec 16.0 MBytes 126 Mbits/sec
[ 4] 12.51-13.59 sec 20.3 MBytes 158 Mbits/sec
[ 4] 13.59-14.65 sec 13.4 MBytes 107 Mbits/sec
[ 4] 14.65-16.79 sec 33.3 MBytes 130 Mbits/sec
[ 4] 16.79-16.79 sec 0.00 Bytes 0.00 bits/sec
[ 4] 16.79-17.82 sec 5.94 MBytes 48.7 Mbits/sec
(etc)
[root@Lab200slot2 ~]# iperf3 --sctp -6 -c 2001:db8:0:f101::1 -V -l 1400 -t 60
iperf version 3.0.1 (10 January 2014)
Linux Lab200slot2 3.14.0 #1 SMP Thu Apr 3 23:18:29 EDT 2014 x86_64
Time: Fri, 11 Apr 2014 19:08:41 GMT
Connecting to host 2001:db8:0:f101::1, port 5201
Cookie: Lab200slot2.
1397243321.714295.2b3f7c
[ 4] local 2001:db8:0:f101::2 port 55804 connected to 2001:db8:0:f101::1 port 5201
Starting Test: protocol: SCTP, 1 streams, 1400 byte blocks, omitting 0 seconds, 60 second test
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 169 MBytes 1.42 Gbits/sec
[ 4] 1.00-2.00 sec 201 MBytes 1.69 Gbits/sec
[ 4] 2.00-3.00 sec 188 MBytes 1.58 Gbits/sec
[ 4] 3.00-4.00 sec 174 MBytes 1.46 Gbits/sec
[ 4] 4.00-5.00 sec 165 MBytes 1.39 Gbits/sec
[ 4] 5.00-6.00 sec 199 MBytes 1.67 Gbits/sec
[ 4] 6.00-7.00 sec 163 MBytes 1.36 Gbits/sec
[ 4] 7.00-8.00 sec 174 MBytes 1.46 Gbits/sec
[ 4] 8.00-9.00 sec 193 MBytes 1.62 Gbits/sec
[ 4] 9.00-10.00 sec 196 MBytes 1.65 Gbits/sec
[ 4] 10.00-11.00 sec 157 MBytes 1.31 Gbits/sec
[ 4] 11.00-12.00 sec 175 MBytes 1.47 Gbits/sec
[ 4] 12.00-13.00 sec 192 MBytes 1.61 Gbits/sec
[ 4] 13.00-14.00 sec 199 MBytes 1.67 Gbits/sec
(etc)
After patch:
[root@Lab200slot2 ~]# iperf3 --sctp -4 -c 192.168.240.3 -V -l 1452 -t 60
iperf version 3.0.1 (10 January 2014)
Linux Lab200slot2 3.14.0+ #1 SMP Mon Apr 14 12:06:40 EDT 2014 x86_64
Time: Mon, 14 Apr 2014 16:40:48 GMT
Connecting to host 192.168.240.3, port 5201
Cookie: Lab200slot2.
1397493648.413274.65e131
[ 4] local 192.168.240.2 port 50548 connected to 192.168.240.3 port 5201
Starting Test: protocol: SCTP, 1 streams, 1452 byte blocks, omitting 0 seconds, 60 second test
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 240 MBytes 2.02 Gbits/sec
[ 4] 1.00-2.00 sec 239 MBytes 2.01 Gbits/sec
[ 4] 2.00-3.00 sec 240 MBytes 2.01 Gbits/sec
[ 4] 3.00-4.00 sec 239 MBytes 2.00 Gbits/sec
[ 4] 4.00-5.00 sec 245 MBytes 2.05 Gbits/sec
[ 4] 5.00-6.00 sec 240 MBytes 2.01 Gbits/sec
[ 4] 6.00-7.00 sec 240 MBytes 2.02 Gbits/sec
[ 4] 7.00-8.00 sec 239 MBytes 2.01 Gbits/sec
With the reverted patch applied, the SCTP/IPv4 performance is back
to normal on latest upstream for IPv4 and IPv6 and has same throughput
as 3.4.2 test kernel, steady and interval reports are smooth again.
Fixes:
ef2820a735f7 ("net: sctp: Fix a_rwnd/rwnd management to reflect real state of the receiver's buffer")
Reported-by: Peter Butler <pbutler@sonusnet.com>
Reported-by: Dongsheng Song <dongsheng.song@gmail.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Peter Butler <pbutler@sonusnet.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nsn.com>
Cc: Alexander Sverdlin <alexander.sverdlin@nsn.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mathias Krause [Sun, 13 Apr 2014 16:23:33 +0000 (18:23 +0200)]
filter: prevent nla extensions to peek beyond the end of the message
[ Upstream commit
05ab8f2647e4221cbdb3856dd7d32bd5407316b3 ]
The BPF_S_ANC_NLATTR and BPF_S_ANC_NLATTR_NEST extensions fail to check
for a minimal message length before testing the supplied offset to be
within the bounds of the message. This allows the subtraction of the nla
header to underflow and therefore -- as the data type is unsigned --
allowing far to big offset and length values for the search of the
netlink attribute.
The remainder calculation for the BPF_S_ANC_NLATTR_NEST extension is
also wrong. It has the minuend and subtrahend mixed up, therefore
calculates a huge length value, allowing to overrun the end of the
message while looking for the netlink attribute.
The following three BPF snippets will trigger the bugs when attached to
a UNIX datagram socket and parsing a message with length 1, 2 or 3.
,-[ PoC for missing size check in BPF_S_ANC_NLATTR ]--
| ld #0x87654321
| ldx #42
| ld #nla
| ret a
`---
,-[ PoC for the same bug in BPF_S_ANC_NLATTR_NEST ]--
| ld #0x87654321
| ldx #42
| ld #nlan
| ret a
`---
,-[ PoC for wrong remainder calculation in BPF_S_ANC_NLATTR_NEST ]--
| ; (needs a fake netlink header at offset 0)
| ld #0
| ldx #42
| ld #nlan
| ret a
`---
Fix the first issue by ensuring the message length fulfills the minimal
size constrains of a nla header. Fix the second bug by getting the math
for the remainder calculation right.
Fixes:
4738c1db15 ("[SKFILTER]: Add SKF_ADF_NLATTR instruction")
Fixes:
d214c7537b ("filter: add SKF_AD_NLATTR_NEST to look for nested..")
Cc: Patrick McHardy <kaber@trash.net>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Julian Anastasov [Sun, 13 Apr 2014 15:08:02 +0000 (18:08 +0300)]
ipv4: return valid RTA_IIF on ip route get
[ Upstream commit
91146153da2feab18efab2e13b0945b6bb704ded ]
Extend commit
13378cad02afc2adc6c0e07fca03903c7ada0b37
("ipv4: Change rt->rt_iif encoding.") from 3.6 to return valid
RTA_IIF on 'ip route get ... iif DEVICE' instead of rt_iif 0
which is displayed as 'iif *'.
inet_iif is not appropriate to use because skb_iif is not set.
Use the skb->dev->ifindex instead.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Wang, Xiaoming [Mon, 14 Apr 2014 16:30:45 +0000 (12:30 -0400)]
net: ipv4: current group_info should be put after using.
[ Upstream commit
b04c46190219a4f845e46a459e3102137b7f6cac ]
Plug a group_info refcount leak in ping_init.
group_info is only needed during initialization and
the code failed to release the reference on exit.
While here move grabbing the reference to a place
where it is actually needed.
Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Zhang Dongxing <dongxing.zhang@intel.com>
Signed-off-by: xiaoming wang <xiaoming.wang@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicolas Dichtel [Fri, 11 Apr 2014 13:51:19 +0000 (15:51 +0200)]
vti: don't allow to add the same tunnel twice
[ Upstream commit
8d89dcdf80d88007647945a753821a06eb6cc5a5 ]
Before the patch, it was possible to add two times the same tunnel:
ip l a vti1 type vti remote 10.16.0.121 local 10.16.0.249 key 41
ip l a vti2 type vti remote 10.16.0.121 local 10.16.0.249 key 41
It was possible, because ip_tunnel_newlink() calls ip_tunnel_find() with the
argument dev->type, which was set only later (when calling ndo_init handler
in register_netdevice()). Let's set this type in the setup handler, which is
called before newlink handler.
Introduced by commit
b9959fd3b0fa ("vti: switch to new ip tunnel code").
CC: Cong Wang <amwang@redhat.com>
CC: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nicolas Dichtel [Fri, 11 Apr 2014 13:51:18 +0000 (15:51 +0200)]
gre: don't allow to add the same tunnel twice
[ Upstream commit
5a4552752d8f7f4cef1d98775ece7adb7616fde2 ]
Before the patch, it was possible to add two times the same tunnel:
ip l a gre1 type gre remote 10.16.0.121 local 10.16.0.249
ip l a gre2 type gre remote 10.16.0.121 local 10.16.0.249
It was possible, because ip_tunnel_newlink() calls ip_tunnel_find() with the
argument dev->type, which was set only later (when calling ndo_init handler
in register_netdevice()). Let's set this type in the setup handler, which is
called before newlink handler.
Introduced by commit
c54419321455 ("GRE: Refactor GRE tunneling code.").
CC: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eric Dumazet [Fri, 11 Apr 2014 04:23:36 +0000 (21:23 -0700)]
ipv6: Limit mtu to 65575 bytes
[ Upstream commit
30f78d8ebf7f514801e71b88a10c948275168518 ]
Francois reported that setting big mtu on loopback device could prevent
tcp sessions making progress.
We do not support (yet ?) IPv6 Jumbograms and cook corrupted packets.
We must limit the IPv6 MTU to (65535 + 40) bytes in theory.
Tested:
ifconfig lo mtu 70000
netperf -H ::1
Before patch : Throughput : 0.05 Mbits
After patch : Throughput : 35484 Mbits
Reported-by: Francois WELLENREITER <f.wellenreiter@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Toshiaki Makita [Wed, 9 Apr 2014 08:00:30 +0000 (17:00 +0900)]
bridge: Fix double free and memory leak around br_allowed_ingress
[ Upstream commit
eb7076182d1ae4bc4641534134ed707100d76acc ]
br_allowed_ingress() has two problems.
1. If br_allowed_ingress() is called by br_handle_frame_finish() and
vlan_untag() in br_allowed_ingress() fails, skb will be freed by both
vlan_untag() and br_handle_frame_finish().
2. If br_allowed_ingress() is called by br_dev_xmit() and
br_allowed_ingress() fails, the skb will not be freed.
Fix these two problems by freeing the skb in br_allowed_ingress()
if it fails.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Richter [Wed, 9 Apr 2014 10:52:59 +0000 (12:52 +0200)]
bonding: Remove debug_fs files when module init fails
[ Upstream commit
db29868653394937037d71dc3545768302dda643 ]
Remove the bonding debug_fs entries when the
module initialization fails. The debug_fs
entries should be removed together with all other
already allocated resources.
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Jay Vosburgh <j.vosburgh@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Florian Westphal [Wed, 9 Apr 2014 08:28:50 +0000 (10:28 +0200)]
net: core: don't account for udp header size when computing seglen
[ Upstream commit
6d39d589bb76ee8a1c6cde6822006ae0053decff ]
In case of tcp, gso_size contains the tcpmss.
For UFO (udp fragmentation offloading) skbs, gso_size is the fragment
payload size, i.e. we must not account for udp header size.
Otherwise, when using virtio drivers, a to-be-forwarded UFO GSO packet
will be needlessly fragmented in the forward path, because we think its
individual segments are too large for the outgoing link.
Fixes:
fe6cc55f3a9a053 ("net: ip, ipv6: handle gso skbs in forwarding path")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Tobias Brunner <tobias@strongswan.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dmitry Petukhov [Tue, 8 Apr 2014 20:23:20 +0000 (02:23 +0600)]
l2tp: take PMTU from tunnel UDP socket
[ Upstream commit
f34c4a35d87949fbb0e0f31eba3c054e9f8199ba ]
When l2tp driver tries to get PMTU for the tunnel destination, it uses
the pointer to struct sock that represents PPPoX socket, while it
should use the pointer that represents UDP socket of the tunnel.
Signed-off-by: Dmitry Petukhov <dmgenp@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniel Borkmann [Wed, 9 Apr 2014 14:10:20 +0000 (16:10 +0200)]
net: sctp: test if association is dead in sctp_wake_up_waiters
[ Upstream commit
1e1cdf8ac78793e0875465e98a648df64694a8d0 ]
In function sctp_wake_up_waiters(), we need to involve a test
if the association is declared dead. If so, we don't have any
reference to a possible sibling association anymore and need
to invoke sctp_write_space() instead, and normally walk the
socket's associations and notify them of new wmem space. The
reason for special casing is that otherwise, we could run
into the following issue when a sctp_primitive_SEND() call
from sctp_sendmsg() fails, and tries to flush an association's
outq, i.e. in the following way:
sctp_association_free()
`-> list_del(&asoc->asocs) <-- poisons list pointer
asoc->base.dead = true
sctp_outq_free(&asoc->outqueue)
`-> __sctp_outq_teardown()
`-> sctp_chunk_free()
`-> consume_skb()
`-> sctp_wfree()
`-> sctp_wake_up_waiters() <-- dereferences poisoned pointers
if asoc->ep->sndbuf_policy=0
Therefore, only walk the list in an 'optimized' way if we find
that the current association is still active. We could also use
list_del_init() in addition when we call sctp_association_free(),
but as Vlad suggests, we want to trap such bugs and thus leave
it poisoned as is.
Why is it safe to resolve the issue by testing for asoc->base.dead?
Parallel calls to sctp_sendmsg() are protected under socket lock,
that is lock_sock()/release_sock(). Only within that path under
lock held, we're setting skb/chunk owner via sctp_set_owner_w().
Eventually, chunks are freed directly by an association still
under that lock. So when traversing association list on destruction
time from sctp_wake_up_waiters() via sctp_wfree(), a different
CPU can't be running sctp_wfree() while another one calls
sctp_association_free() as both happens under the same lock.
Therefore, this can also not race with setting/testing against
asoc->base.dead as we are guaranteed for this to happen in order,
under lock. Further, Vlad says: the times we check asoc->base.dead
is when we've cached an association pointer for later processing.
In between cache and processing, the association may have been
freed and is simply still around due to reference counts. We check
asoc->base.dead under a lock, so it should always be safe to check
and not race against sctp_association_free(). Stress-testing seems
fine now, too.
Fixes:
cd253f9f357d ("net: sctp: wake up all assocs if sndbuf policy is per socket")
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniel Borkmann [Tue, 8 Apr 2014 15:26:13 +0000 (17:26 +0200)]
net: sctp: wake up all assocs if sndbuf policy is per socket
[ Upstream commit
52c35befb69b005c3fc5afdaae3a5717ad013411 ]
SCTP charges chunks for wmem accounting via skb->truesize in
sctp_set_owner_w(), and sctp_wfree() respectively as the
reverse operation. If a sender runs out of wmem, it needs to
wait via sctp_wait_for_sndbuf(), and gets woken up by a call
to __sctp_write_space() mostly via sctp_wfree().
__sctp_write_space() is being called per association. Although
we assign sk->sk_write_space() to sctp_write_space(), which
is then being done per socket, it is only used if send space
is increased per socket option (SO_SNDBUF), as SOCK_USE_WRITE_QUEUE
is set and therefore not invoked in sock_wfree().
Commit
4c3a5bdae293 ("sctp: Don't charge for data in sndbuf
again when transmitting packet") fixed an issue where in case
sctp_packet_transmit() manages to queue up more than sndbuf
bytes, sctp_wait_for_sndbuf() will never be woken up again
unless it is interrupted by a signal. However, a still
remaining issue is that if net.sctp.sndbuf_policy=0, that is
accounting per socket, and one-to-many sockets are in use,
the reclaimed write space from sctp_wfree() is 'unfairly'
handed back on the server to the association that is the lucky
one to be woken up again via __sctp_write_space(), while
the remaining associations are never be woken up again
(unless by a signal).
The effect disappears with net.sctp.sndbuf_policy=1, that
is wmem accounting per association, as it guarantees a fair
share of wmem among associations.
Therefore, if we have reclaimed memory in case of per socket
accounting, wake all related associations to a socket in a
fair manner, that is, traverse the socket association list
starting from the current neighbour of the association and
issue a __sctp_write_space() to everyone until we end up
waking ourselves. This guarantees that no association is
preferred over another and even if more associations are
taken into the one-to-many session, all receivers will get
messages from the server and are not stalled forever on
high load. This setting still leaves the advantage of per
socket accounting in touch as an association can still use
up global limits if unused by others.
Fixes:
4eb701dfc618 ("[SCTP] Fix SCTP sendbuffer accouting.")
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steven Rostedt [Tue, 18 Mar 2014 15:27:37 +0000 (11:27 -0400)]
drm/i915: Do not dereference pointers from ring buffer in evict event
commit
9297ebf29ad9118edd6c0fedc84f03e35028827d upstream.
The TP_printk() should never dereference any pointers, because the ring
buffer can be read at some unknown time in the future. If a device no
longer exists, it can cause a kernel oops. This also makes this
event useless when saving the ring buffer in userspaces tools such as
perf and trace-cmd.
The i915_gem_evict_vm dereferences the vm pointer which may also not
exist when the ring buffer is read sometime in the future.
Link: http://lkml.kernel.org/r/1395095198-20034-3-git-send-email-artagnon@gmail.com
Reported-by: Ramkumar Ramachandra <artagnon@gmail.com>
Fixes:
bcccff847d1f "drm/i915: trace vm eviction instead of everything"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
[danvet: Try to make it actually compile]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jani Nikula [Fri, 28 Mar 2014 06:54:04 +0000 (08:54 +0200)]
drm/i915/tv: fix gen4 composite s-video tv-out
commit
e1f23f3dd817f53f622e486913ac662add46eeed upstream.
This is *not* bisected, but the likely regression is
commit
c35614380d5c956bfda20eab2755b2f5a7d6f1e7
Author: Zhao Yakui <yakui.zhao@intel.com>
Date: Tue Nov 24 09:48:48 2009 +0800
drm/i915: Don't set up the TV port if it isn't in the BIOS table.
The commit does not check for all TV device types that might be present
in the VBT, disabling TV out for the missing ones. Add composite
S-video.
Reported-and-tested-by: Matthew Khouzam <matthew.khouzam@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73362
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Wed, 2 Apr 2014 12:42:49 +0000 (08:42 -0400)]
drm/radeon: fix typo in spectre_golden_registers
commit
f1553174a207f68a4ec19d436003097e0a4dc405 upstream.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Wed, 2 Apr 2014 12:42:48 +0000 (08:42 -0400)]
drm/radeon: fix endian swap on hawaii clear state buffer setup
commit
a8947f576728a66bd3aac629bd8ca021a010c808 upstream.
Need to swap on BE.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Mon, 31 Mar 2014 15:19:46 +0000 (11:19 -0400)]
drm/radeon: call drm_edid_to_eld when we update the edid
commit
16086279353cbfecbb3ead474072dced17b97ddc upstream.
This needs to be done to update some of the fields in
the connector structure used by the audio code.
Noticed by several users on irc.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Christian König [Tue, 25 Mar 2014 10:41:40 +0000 (11:41 +0100)]
drm/radeon: clear needs_reset flag if IB test fails
commit
06a139f7a0885fa2c84962300edd181821ddc2c9 upstream.
If the IB test fails we don't want to reset the card over
and over again, just accept that it isn't working.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=76501
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Maarten Lankhorst [Tue, 1 Apr 2014 13:15:47 +0000 (15:15 +0200)]
drm/qxl: unset a pointer in sync_obj_unref
commit
41ccec352f3c823931a7d9d2a9c7880c14d7415a upstream.
This fixes a BUG_ON(bo->sync_obj != NULL); in ttm_bo_release_list.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Hellstrom [Tue, 15 Apr 2014 16:25:48 +0000 (18:25 +0200)]
drm/vmwgfx: Make sure user-space can't DMA across buffer object boundaries v2
commit
cbd75e97a525e3819c02dc18bc2d67aa544c9e45 upstream.
We already check that the buffer object we're accessing is registered with
the file. Now also make sure that we can't DMA across buffer object boundaries.
v2: Code commenting update.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Hellstrom [Mon, 31 Mar 2014 08:20:30 +0000 (10:20 +0200)]
drm/vmwgfx: Fix query buffer locking order violation
commit
c8e5e010ef12df6707a1d711a5279a22f67a355e upstream.
The query buffers were reserved while holding the binding mutex, which
caused a circular locking dependency.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Christopher Friedt [Sat, 1 Feb 2014 15:01:15 +0000 (10:01 -0500)]
drm/vmwgfx: correct fb_fix_screeninfo.line_length
commit
aa6de142c901cd2d90ef08db30ae87da214bedcc upstream.
Previously, the vmwgfx_fb driver would allow users to call FBIOSET_VINFO, but it would not adjust
the FINFO properly, resulting in distorted screen rendering. The patch corrects that behaviour.
See https://bugs.gentoo.org/show_bug.cgi?id=494794 for examples.
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eliad Peller [Sun, 13 Apr 2014 13:33:51 +0000 (16:33 +0300)]
wl18xx: align event mailbox with current fw
commit
c0da71ff4d2cbf113465bff9a7c413154be25a89 upstream.
Some fields are missing from the event mailbox
struct definitions, which cause issues when
trying to handle some events.
Add the missing fields in order to align the
struct size (without adding actual support
for the new fields).
Reported-and-tested-by: Imre Kaloz <kaloz@openwrt.org>
Fixes: 028e724 ("wl18xx: move to new firmware (wl18xx-fw-3.bin)")
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Bächler [Thu, 3 Apr 2014 19:55:37 +0000 (21:55 +0200)]
fs: Don't return 0 from get_anon_bdev
commit
a2a4dc494a7b7135f460e38e788c4a58f65e4ac3 upstream.
Commit
9e30cc9595303b27b48 removed an internal mount. This
has the side-effect that rootfs now has FSID 0. Many
userspace utilities assume that st_dev in struct stat
is never 0, so this change breaks a number of tools in
early userspace.
Since we don't know how many userspace programs are affected,
make sure that FSID is at least 1.
References: http://article.gmane.org/gmane.linux.kernel/1666905
References: http://permalink.gmane.org/gmane.linux.utilities.util-linux-ng/8557
Signed-off-by: Thomas Bächler <thomas@archlinux.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Tested-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Mason [Tue, 15 Apr 2014 22:09:24 +0000 (18:09 -0400)]
mlx4_en: don't use napi_synchronize inside mlx4_en_netpoll
commit
c98235cb8584a72e95786e17d695a8e5fafcd766 upstream.
The mlx4 driver is triggering schedules while atomic inside
mlx4_en_netpoll:
spin_lock_irqsave(&cq->lock, flags);
napi_synchronize(&cq->napi);
^^^^^ msleep here
mlx4_en_process_rx_cq(dev, cq, 0);
spin_unlock_irqrestore(&cq->lock, flags);
This was part of a patch by Alexander Guller from Mellanox in 2011,
but it still isn't upstream.
Signed-off-by: Chris Mason <clm@fb.com>
Acked-By: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tony Lindgren [Tue, 25 Mar 2014 18:48:47 +0000 (11:48 -0700)]
serial: omap: Fix missing pm_runtime_resume handling by simplifying code
commit
d758c9c1b36b4d9a141c2146c70398d756167ed1 upstream.
The lack of pm_runtime_resume handling for the device state leads into
device wake-up interrupts not working after a while for runtime PM.
Also, serial-omap is confused about the use of device_may_wakeup.
The checks for device_may_wakeup should only be done for suspend and
resume, not for pm_runtime_suspend and pm_runtime_resume. The wake-up
events for PM runtime should always be enabled.
The lack of pm_runtime_resume handling leads into device wake-up
interrupts not working after a while for runtime PM.
Rather than try to patch over the issue of adding complex tests to
the pm_runtime_resume, let's fix the issues properly:
1. Make serial_omap_enable_wakeup deal with all internal PM state
handling so we don't need to test for up->wakeups_enabled elsewhere.
Later on once omap3 boots in device tree only mode we can also
remove the up->wakeups_enabled flag and rely on the wake-up
interrupt enable/disable state alone.
2. Do the device_may_wakeup checks in suspend and resume only,
for runtime PM the wake-up events need to be always enabled.
3. Finally just call serial_omap_enable_wakeup and make sure we
call it also in pm_runtime_resume.
4. Note that we also have to use disable_irq_nosync as serial_omap_irq
calls pm_runtime_get_sync.
Fixes:
2a0b965cfb6e (serial: omap: Add support for optional wake-up)
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 16:49:20 +0000 (18:49 +0200)]
usb: option: add and update a number of CMOTech devices
commit
34f972d6156fe9eea2ab7bb418c71f9d1d5c8e7b upstream.
A number of older CMOTech modems are based on Qualcomm
chips. The blacklisted interfaces are QMI/wwan.
Reported-by: Lars Melin <larsm17@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 16:49:19 +0000 (18:49 +0200)]
usb: option: add Alcatel L800MA
commit
dd6b48ecec2ea7d15f28d5e5474388681899a5e1 upstream.
Device interface layout:
0: ff/ff/ff - serial
1: ff/00/00 - serial AT+PPP
2: ff/ff/ff - QMI/wwan
3: 08/06/50 - storage
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 16:49:18 +0000 (18:49 +0200)]
usb: option: add Olivetti Olicard 500
commit
533b3994610f316e5cd61b56d0c4daa15c830f89 upstream.
Device interface layout:
0: ff/ff/ff - serial
1: ff/ff/ff - serial AT+PPP
2: 08/06/50 - storage
3: ff/ff/ff - serial
4: ff/ff/ff - QMI/wwan
Reported-by: Julio Araujo <julio.araujo@wllctel.com.br>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 16:49:17 +0000 (18:49 +0200)]
usb: qcserial: add Sierra Wireless MC7305/MC7355
commit
bce4f588f19d59fc07fadfeb0b2a3a06c942827a upstream.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 16:49:16 +0000 (18:49 +0200)]
usb: qcserial: add Sierra Wireless MC73xx
commit
70a3615fc07c2330ed7c1e922f3c44f4a67c0762 upstream.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 25 Apr 2014 16:49:15 +0000 (18:49 +0200)]
usb: qcserial: add Sierra Wireless EM7355
commit
a00986f81182a69dee4d2c48e8c19805bdf0f790 upstream.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>