Commit Graph

519751 Commits

Author SHA1 Message Date
Hans-Werner Hilse
9a75551aea um: Do not use __ptr_t type for stack_t's .ss pointer
__ptr_t type is a glibc-specific type, while the generally
documented type is a void*. That's what other C libraries use,
too.

Signed-off-by: Hans-Werner Hilse <hwhilse@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-06-25 22:42:17 +02:00
Richard Weinberger
1eb7c6c70e um: Fix mconsole dependency
mconsole depends on CONFIG_PROC_FS.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 23:27:26 +02:00
Richard Weinberger
5334cdae40 um: Handle tracehook_report_syscall_entry() result
tracehook_report_syscall_entry() is allowed to fail,
in case of failure we have to abort the current syscall.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 22:59:03 +02:00
Richard Weinberger
30b11ee9ae um: Remove copy&paste code from init.h
As we got rid of the __KERNEL__ abuse, we can directly
include linux/compiler.h now.
This also allows gcc 5 to build UML.

Reported-by: Hans-Werner Hilse <hwhilse@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 22:17:08 +02:00
Richard Weinberger
298e20ba8c um: Stop abusing __KERNEL__
Currently UML is abusing __KERNEL__ to distinguish between
kernel and host code (os-Linux). It is better to use a custom
define such that existing users of __KERNEL__ don't get confused.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 22:05:32 +02:00
Richard Weinberger
d2313084e2 um: Catch unprotected user memory access
If the kernel tries to access user memory without copy_from_user()
a trap will happen as kernel and userspace run in different processes
on the host side. Currently this special page fault cannot be resolved
and will happen over and over again. As result UML will lockup.
This patch allows the page fault code to detect that situation and
causes a panic() such that the root cause of the unprotected memory
access can be found and fixed.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 19:21:51 +02:00
Richard Weinberger
6c68446558 um: Fix warning in setup_signal_stack_si()
Fixes:
arch/x86/um/signal.c: In function ‘setup_signal_stack_si’:
include/asm-generic/uaccess.h:146:27: warning: initialization from incompatible pointer type [enabled by default]
  __typeof__(*(ptr)) __x = (x);    \
                           ^
arch/x86/um/signal.c:544:10: note: in expansion of macro ‘__put_user’
   err |= __put_user(ksig->ka.sa.sa_restorer,

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 17:39:19 +02:00
Richard Weinberger
f8d65d27e6 um: Rework uaccess code
Rework UML's uaccess code to reuse as much as possible
from asm-generic/uaccess.c.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 17:32:36 +02:00
Richard Weinberger
1d04c8d779 um: Add uaccess.h to ldt.c
...for userspace memory access.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 17:32:03 +02:00
Richard Weinberger
7017f42f3a um: Add uaccess.h to syscalls_64.c
It's using put_user() and needs this header.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 17:31:56 +02:00
Richard Weinberger
9b46e2128e um: Add asm/elf.h to vma.c
um_vdso_addr is defined in asm/elf.h.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 17:31:50 +02:00
Richard Weinberger
2779567346 um: Cleanup mem_32/64.c headers
Include only headers we really need.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 17:31:42 +02:00
Richard Weinberger
f74a14e870 um: Remove hppfs
hppfs (honeypot procfs) was an attempt to use UML as honeypot.
It was never stable nor in heavy use.

As Al Viro and Christoph Hellwig pointed some major issues out
it is better to let it die.

Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 13:23:08 +02:00
Richard Weinberger
89520d9996 um: Move syscall() declaration into os.h
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 13:14:07 +02:00
Chen Gang
a791b1565f um: kernel: ksyms: Export symbol syscall() for fixing modpost issue
syscall() is implemented in libc.so/a (e.g. for glibc, in "syscall.o"),
so for normal ".o" files, it is undefined, neither can be found within
kernel wide, so will break modpost.

Since ".o" files is OK, can simply export 'syscall' symbol, let modpost
know about that, then can fix this issue.

The related error (with allmodconfig under um):

    MODPOST 1205 modules
  ERROR: "syscall" [fs/hostfs/hostfs.ko] undefined!

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 13:14:07 +02:00
Nicolas Iooss
5f32943b5e um/os-Linux: Use char[] for syscall_stub declarations
When declaring __syscall_stub_start, use the same type in UML userspace
code as in arch/um/include/asm/sections.h.

While at it, also declare batch_syscall_stub as char[].

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 13:14:07 +02:00
Nicolas Iooss
05eacfd00c um: Use char[] for linker script address declarations
The linker script defines some variables which are declared either with
type char[] in include/asm-generic/sections.h or with a meaningless
integer type in arch/um/include/asm/sections.h.

Fix this inconsistency by declaring every variable char[].

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 13:14:06 +02:00
Nicolas Iooss
d5f20be7ca um: Create asm/sections.h
arch/um/kernel/dyn.lds.S and arch/um/kernel/uml.lds.S define some
UML-specific symbols.  These symbols are used in the kernel part of UML
with extern declarations.

Move these declarations to a new header, asm/sections.h, like other
architectures do.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-05-31 13:14:05 +02:00
Linus Torvalds
ba155e2d21 Linux 4.1-rc5 2015-05-24 18:22:35 -07:00
Linus Torvalds
5b13966693 SCSI fixes on 20150523
This is a set of five fixes: Two MAINTAINER email updates (urgent because the
 non-avagotech emails will start bouncing) an lpfc big endian oops fix, a 256
 byte sector hang fix (to eliminate 256 byte sectors) and a storvsc fix which
 could cause test unit ready failures on bringup.
 
 Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of five fixes: Two MAINTAINER email updates (urgent
  because the non-avagotech emails will start bouncing) an lpfc big
  endian oops fix, a 256 byte sector hang fix (to eliminate 256 byte
  sectors) and a storvsc fix which could cause test unit ready failures
  on bringup"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  MAINTAINERS: Revise lpfc maintainers for Avago Technologies ownership of Emulex
  MAINTAINERS, be2iscsi: change email domain
  sd: Disable support for 256 byte/sector disks
  lpfc: Fix breakage on big endian kernels
  storvsc: Set the SRB flags correctly when no data transfer is needed
2015-05-24 11:15:28 -07:00
Linus Torvalds
c5db6a3bde Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
 "One more fix from the timer departement:

    - Handle division of negative nanosecond values proper on 32bit.

      A recent cleanup wrecked the sign handling of the dividend and
      dropped the check for negative divisors"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ktime: Fix ktime_divns to do signed division
2015-05-23 17:57:40 -07:00
Linus Torvalds
9bd4459a3d Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irqchip fix from Thomas Gleixner:
 "A fix for a GIC-V3 irqchip regression which prevents some systems from
  booting"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gicv3-its: ITS table size should not be smaller than PSZ
2015-05-23 17:33:10 -07:00
Linus Torvalds
086e8ddb56 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull two Ceph fixes from Sage Weil:
 "These fix an issue with the RBD notifications when there are topology
  changes in the cluster"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  Revert "libceph: clear r_req_lru_item in __unregister_linger_request()"
  libceph: request a new osdmap if lingering request maps to no osd
2015-05-23 11:28:25 -07:00
Linus Torvalds
7ce14f6ff2 Merge branch 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "I fixed up a regression from 4.0 where conversion between different
  raid levels would sometimes bail out without converting.

  Filipe tracked down a race where it was possible to double allocate
  chunks on the drive.

  Mark has a fix for fiemap.  All three will get bundled off for stable
  as well"

* 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix regression in raid level conversion
  Btrfs: fix racy system chunk allocation when setting block group ro
  btrfs: clear 'ret' in btrfs_check_shared() loop
2015-05-23 11:14:10 -07:00
Linus Torvalds
cf539cbd8a Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Radeon has two displayport fixes, one for a regression.

  i915 regression flicker fix needed so 4.0 can get fixed.

  A bunch of msm fixes and a bunch of exynos fixes, these two are
  probably a bit larger than I'd like, but most of them seems pretty
  good"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (29 commits)
  drm/radeon: fix error flag checking in native aux path
  drm/radeon: retry dcpd fetch
  drm/msm/mdp5: fix incorrect parameter for msm_framebuffer_iova()
  drm/exynos: dp: Lower level of EDID read success message
  drm/exynos: cleanup exynos_drm_plane
  drm/exynos: 'win' is always unsigned
  drm/exynos: mixer: don't dump registers under spinlock
  drm/exynos: Consolidate return statements in fimd_bind()
  drm/exynos: Constify exynos_drm_crtc_ops
  drm/exynos: Fix build breakage on !DRM_EXYNOS_FIMD
  drm/exynos: mixer: Constify platform_device_id
  drm/exynos: mixer: cleanup pixelformat handling
  drm/exynos: mixer: also allow NV21 for the video processor
  drm/exynos: mixer: remove buffer count handling in vp_video_buffer()
  drm/exynos: plane: honor buffer offset for dma_addr
  drm/exynos: fb: use drm_format_num_planes to get buffer count
  drm/i915: fix screen flickering
  drm/msm: fix locking inconsistencies in gpu->destroy()
  drm/msm/dsi: Simplify the code to get the number of read byte
  drm/msm: Attach assigned encoder to eDP and DSI connectors
  ...
2015-05-22 17:34:24 -07:00
Linus Torvalds
0b6280c620 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Don't leak ipvs->sysctl_tbl, from Tommi Rentala.

 2) Fix neighbour table entry leak in rocker driver, from Ying Xue.

 3) Do not emit bonding notifications for unregistered interfaces, from
    Nicolas Dichtel.

 4) Set ipv6 flow label properly when in TIME_WAIT state, from Florent
    Fourcot.

 5) Fix regression in ipv6 multicast filter test, from Henning Rogge.

 6) do_replace() in various footables netfilter modules is missing a
    check for 0 counters in the datastructure provided by the user.  Fix
    from Dave Jones, and found with trinity.

 7) Fix RCU bug in packet scheduler classifier module unloads, from
    Daniel Borkmann.

 8) Avoid deadlock in tcp_get_info() by using u64_sync.  From Eric
    Dumzaet.

 9) Input packet processing can race with inetdev_destroy() teardown,
    fix potential OOPS in ip_error() by explicitly testing whether the
    inetdev is still attached.  From Eric W Biederman.

10) MLDv2 parser in bridge multicast code breaks too early while
    parsing.  Fix from Thadeu Lima de Souza Cascardo.

11) Asking for settings on non-zero PHYID doesn't work because we do not
    import the command structure from the user and use the PHYID
    provided there.  Fix from Arun Parameswaran.

12) Fix UDP checksums with IPV6 RAW sockets, from Vlad Yasevich.

13) Missing NF_TABLES depends for TPROXY etc can cause build failures,
    fix from Florian Westphal.

14) Fix netfilter conntrack to handle RFC5961 challenge ACKs properly,
    from Jesper Dangaard Brouer.

15) If netlink autobind retry fails, we have to reset the sockets portid
    back to zero.  From Herbert Xu.

16) VXLAN netns exit code unregisters using wrong device, from John W
    Linville.

17) Add some USB device IDs to ath3k and btusb bluetooth drivers, from
    Dmitry Tunin and Wen-chien Jesse Sung.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  bridge: fix lockdep splat
  net: core: 'ethtool' issue with querying phy settings
  bridge: fix parsing of MLDv2 reports
  ARM: zynq: DT: Use the zynq binding with macb
  net: macb: Disable half duplex gigabit on Zynq
  net: macb: Document zynq gem dt binding
  ipv4: fill in table id when replacing a route
  cdc_ncm: Fix tx_bytes statistics
  ipv4: Avoid crashing in ip_error
  tcp: fix a potential deadlock in tcp_get_info()
  net: sched: fix call_rcu() race on classifier module unloads
  net: phy: Make sure phy_start() always re-enables the phy interrupts
  ipv6: fix ECMP route replacement
  ipv6: do not delete previously existing ECMP routes if add fails
  Revert "netfilter: bridge: query conntrack about skb dnat"
  netfilter: ensure number of counters is >0 in do_replace()
  netfilter: nfnetlink_{log,queue}: Register pernet in first place
  tcp: don't over-send F-RTO probes
  tcp: only undo on partial ACKs in CA_Loss
  net/ipv6/udp: Fix ipv6 multicast socket filter regression
  ...
2015-05-22 15:44:50 -07:00
Linus Torvalds
1c8df7bd48 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
 "Three small fixes that have been picked up the last few weeks.
  Specifically:

   - Fix a memory corruption issue in NVMe with malignant user
     constructed request.  From Christoph.

   - Kill (now) unused blk_queue_bio(), dm was changed to not need this
     anymore.  From Mike Snitzer.

   - Always use blk_schedule_flush_plug() from the io_schedule() path
     when flushing a plug, fixing a !TASK_RUNNING warning with md.  From
     Shaohua"

* 'for-linus' of git://git.kernel.dk/linux-block:
  sched: always use blk_schedule_flush_plug in io_schedule_out
  nvme: fix kernel memory corruption with short INQUIRY buffers
  block: remove export for blk_queue_bio
2015-05-22 15:15:30 -07:00
Linus Torvalds
a30ec4b347 md fixes for 4.1-rc4
- one serious RAID0 data corruption - caused by recent bugfix that wasn't
   reviewed properly.
 - one raid5 fix in new code (a couple more of those to come).
 - one little fix to stop static analysis complaining about silly rcu
   annotation.
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Merge tag 'md/4.1-rc4-fixes' of git://neil.brown.name/md

Pull md bugfixes from Neil Brown:
 "I have a few more raid5 bugfixes pending, but I want them to get a bit
  more review first.  In the meantime:

   - one serious RAID0 data corruption - caused by recent bugfix that
     wasn't reviewed properly.

   - one raid5 fix in new code (a couple more of those to come).

   - one little fix to stop static analysis complaining about silly rcu
     annotation"

* tag 'md/4.1-rc4-fixes' of git://neil.brown.name/md:
  md/bitmap: remove rcu annotation from pointer arithmetic.
  md/raid0: fix restore to sector variable in raid0_make_request
  raid5: fix broken async operation chain
2015-05-22 15:10:07 -07:00
Linus Torvalds
1d82b0baf9 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
 "Updates for the input subsystem.

  The main change is that we tell joydev not to touch "absolute mice",
  such as VMware virtual mouse, as that produced bad result (cursor
  stuck in upper right corner) with games"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: smtpe-ts - wait 50mS until polling for pen-up
  Input: smtpe-ts - use msecs_to_jiffies() instead of HZ
  Input: joydev - don't classify the vmmouse as a joystick
  Input: vmmouse - do not reference non-existing version of X driver
  Input: alps - fix finger jumps on lifting 2 fingers on v7 touchpad
  Input: elantech - fix semi-mt protocol for v3 HW
  Input: sx8654 - fix memory allocation check
2015-05-22 14:49:55 -07:00
Linus Torvalds
2a058f388d Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull another crypto fix from Herbert Xu:
 "Fix ICV corruption in s390/ghash when the same tfm is used by more
  than one thread"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: s390/ghash - Fix incorrect ghash icv buffer handling.
2015-05-22 14:26:36 -07:00
Eric Dumazet
93a33a584e bridge: fix lockdep splat
Following lockdep splat was reported :

[   29.382286] ===============================
[   29.382315] [ INFO: suspicious RCU usage. ]
[   29.382344] 4.1.0-0.rc0.git11.1.fc23.x86_64 #1 Not tainted
[   29.382380] -------------------------------
[   29.382409] net/bridge/br_private.h:626 suspicious
rcu_dereference_check() usage!
[   29.382455]
               other info that might help us debug this:

[   29.382507]
               rcu_scheduler_active = 1, debug_locks = 0
[   29.382549] 2 locks held by swapper/0/0:
[   29.382576]  #0:  (((&p->forward_delay_timer))){+.-...}, at:
[<ffffffff81139f75>] call_timer_fn+0x5/0x4f0
[   29.382660]  #1:  (&(&br->lock)->rlock){+.-...}, at:
[<ffffffffa0450dc1>] br_forward_delay_timer_expired+0x31/0x140
[bridge]
[   29.382754]
               stack backtrace:
[   29.382787] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.1.0-0.rc0.git11.1.fc23.x86_64 #1
[   29.382838] Hardware name: LENOVO 422916G/LENOVO, BIOS A1KT53AUS 04/07/2015
[   29.382882]  0000000000000000 3ebfc20364115825 ffff880666603c48
ffffffff81892d4b
[   29.382943]  0000000000000000 ffffffff81e124e0 ffff880666603c78
ffffffff8110bcd7
[   29.383004]  ffff8800785c9d00 ffff88065485ac58 ffff880c62002800
ffff880c5fc88ac0
[   29.383065] Call Trace:
[   29.383084]  <IRQ>  [<ffffffff81892d4b>] dump_stack+0x4c/0x65
[   29.383130]  [<ffffffff8110bcd7>] lockdep_rcu_suspicious+0xe7/0x120
[   29.383178]  [<ffffffffa04520f9>] br_fill_ifinfo+0x4a9/0x6a0 [bridge]
[   29.383225]  [<ffffffffa045266b>] br_ifinfo_notify+0x11b/0x4b0 [bridge]
[   29.383271]  [<ffffffffa0450d90>] ? br_hold_timer_expired+0x70/0x70 [bridge]
[   29.383320]  [<ffffffffa0450de8>]
br_forward_delay_timer_expired+0x58/0x140 [bridge]
[   29.383371]  [<ffffffffa0450d90>] ? br_hold_timer_expired+0x70/0x70 [bridge]
[   29.383416]  [<ffffffff8113a033>] call_timer_fn+0xc3/0x4f0
[   29.383454]  [<ffffffff81139f75>] ? call_timer_fn+0x5/0x4f0
[   29.383493]  [<ffffffff8110a90f>] ? lock_release_holdtime.part.29+0xf/0x200
[   29.383541]  [<ffffffffa0450d90>] ? br_hold_timer_expired+0x70/0x70 [bridge]
[   29.383587]  [<ffffffff8113a6a4>] run_timer_softirq+0x244/0x490
[   29.383629]  [<ffffffff810b68cc>] __do_softirq+0xec/0x670
[   29.383666]  [<ffffffff810b70d5>] irq_exit+0x145/0x150
[   29.383703]  [<ffffffff8189f506>] smp_apic_timer_interrupt+0x46/0x60
[   29.383744]  [<ffffffff8189d523>] apic_timer_interrupt+0x73/0x80
[   29.383782]  <EOI>  [<ffffffff816f131f>] ? cpuidle_enter_state+0x5f/0x2f0
[   29.383832]  [<ffffffff816f131b>] ? cpuidle_enter_state+0x5b/0x2f0

Problem here is that br_forward_delay_timer_expired() is a timer
handler, calling br_ifinfo_notify() which assumes either rcu_read_lock()
or RTNL are held.

Simplest fix seems to add rcu read lock section.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Reported-by: Dominick Grift <dac.override@gmail.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 16:23:56 -04:00
Arun Parameswaran
f96dee13b8 net: core: 'ethtool' issue with querying phy settings
When trying to configure the settings for PHY1, using commands
like 'ethtool -s eth0 phyad 1 speed 100', the 'ethtool' seems to
modify other settings apart from the speed of the PHY1, in the
above case.

The ethtool seems to query the settings for PHY0, and use this
as the base to apply the new settings to the PHY1. This is
causing the other settings of the PHY 1 to be wrongly
configured.

The issue is caused by the '_ethtool_get_settings()' API, which
gets called because of the 'ETHTOOL_GSET' command, is clearing
the 'cmd' pointer (of type 'struct ethtool_cmd') by calling
memset. This clears all the parameters (if any) passed for the
'ETHTOOL_GSET' cmd. So the driver's callback is always invoked
with 'cmd->phy_address' as '0'.

The '_ethtool_get_settings()' is called from other files in the
'net/core'. So the fix is applied to the 'ethtool_get_settings()'
which is only called in the context of the 'ethtool'.

Signed-off-by: Arun Parameswaran <aparames@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 16:14:17 -04:00
Thadeu Lima de Souza Cascardo
47cc84ce0c bridge: fix parsing of MLDv2 reports
When more than a multicast address is present in a MLDv2 report, all but
the first address is ignored, because the code breaks out of the loop if
there has not been an error adding that address.

This has caused failures when two guests connected through the bridge
tried to communicate using IPv6. Neighbor discoveries would not be
transmitted to the other guest when both used a link-local address and a
static address.

This only happens when there is a MLDv2 querier in the network.

The fix will only break out of the loop when there is a failure adding a
multicast address.

The mdb before the patch:

dev ovirtmgmt port vnet0 grp ff02::1:ff7d:6603 temp
dev ovirtmgmt port vnet1 grp ff02::1:ff7d:6604 temp
dev ovirtmgmt port bond0.86 grp ff02::2 temp

After the patch:

dev ovirtmgmt port vnet0 grp ff02::1:ff7d:6603 temp
dev ovirtmgmt port vnet1 grp ff02::1:ff7d:6604 temp
dev ovirtmgmt port bond0.86 grp ff02::fb temp
dev ovirtmgmt port bond0.86 grp ff02::2 temp
dev ovirtmgmt port bond0.86 grp ff02::d temp
dev ovirtmgmt port vnet0 grp ff02::1:ff00:76 temp
dev ovirtmgmt port bond0.86 grp ff02::16 temp
dev ovirtmgmt port vnet1 grp ff02::1:ff00:77 temp
dev ovirtmgmt port bond0.86 grp ff02::1:ff00:def temp
dev ovirtmgmt port bond0.86 grp ff02::1:ffa1:40bf temp

Fixes: 08b202b672 ("bridge br_multicast: IPv6 MLD support.")
Reported-by: Rik Theys <Rik.Theys@esat.kuleuven.be>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Tested-by: Rik Theys <Rik.Theys@esat.kuleuven.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 15:08:20 -04:00
Nathan Sullivan
9eeb516139 ARM: zynq: DT: Use the zynq binding with macb
Use the new zynq binding for macb ethernet, since it will disable half
duplex gigabit like the Zynq TRM says to do.

Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 15:04:33 -04:00
Nathan Sullivan
222ca8e0c1 net: macb: Disable half duplex gigabit on Zynq
According to the Zynq TRM, gigabit half duplex is not supported.  Add a
new cap and compatible string so Zynq can avoid advertising that mode.

Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 14:58:09 -04:00
Nathan Sullivan
6db99596d1 net: macb: Document zynq gem dt binding
Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 14:58:09 -04:00
Michal Kubeček
d4e64c2909 ipv4: fill in table id when replacing a route
When replacing an IPv4 route, tb_id member of the new fib_alias
structure is not set in the replace code path so that the new route is
ignored.

Fixes: 0ddcf43d5d ("ipv4: FIB Local/MAIN table collapse")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Acked-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 14:33:17 -04:00
Bjørn Mork
44f6731d8b cdc_ncm: Fix tx_bytes statistics
The tx_curr_frame_payload field is u32. When we try to calculate a
small negative delta based on it, we end up with a positive integer
close to 2^32 instead.  So the tx_bytes pointer increases by about
2^32 for every transmitted frame.

Fix by calculating the delta as a signed long.

Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Reported-by: Florian Bruhin <me@the-compiler.org>
Fixes: 7a1e890e21 ("usbnet: Fix tx_bytes statistic running backward in cdc_ncm")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 14:26:31 -04:00
David S. Miller
572152adfb Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contain Netfilter fixes for your net tree, they are:

1) Fix a race in nfnetlink_log and nfnetlink_queue that can lead to a crash.
   This problem is due to wrong order in the per-net registration and netlink
   socket events. Patch from Francesco Ruggeri.

2) Make sure that counters that userspace pass us are higher than 0 in all the
   x_tables frontends. Discovered via Trinity, patch from Dave Jones.

3) Revert a patch for br_netfilter to rely on the conntrack status bits. This
   breaks stateless IPv6 NAT transformations. Patch from Florian Westphal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 14:25:45 -04:00
Eric W. Biederman
381c759d99 ipv4: Avoid crashing in ip_error
ip_error does not check if in_dev is NULL before dereferencing it.

IThe following sequence of calls is possible:
CPU A                          CPU B
ip_rcv_finish
    ip_route_input_noref()
        ip_route_input_slow()
                               inetdev_destroy()
    dst_input()

With the result that a network device can be destroyed while processing
an input packet.

A crash was triggered with only unicast packets in flight, and
forwarding enabled on the only network device.   The error condition
was created by the removal of the network device.

As such it is likely the that error code was -EHOSTUNREACH, and the
action taken by ip_error (if in_dev had been accessible) would have
been to not increment any counters and to have tried and likely failed
to send an icmp error as the network device is going away.

Therefore handle this weird case by just dropping the packet if
!in_dev.  It will result in dropping the packet sooner, and will not
result in an actual change of behavior.

Fixes: 251da41301 ("ipv4: Cache ip_error() routes even when not forwarding.")
Reported-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
Tested-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
Signed-off-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 14:23:40 -04:00
Eric Dumazet
d654976cbf tcp: fix a potential deadlock in tcp_get_info()
Taking socket spinlock in tcp_get_info() can deadlock, as
inet_diag_dump_icsk() holds the &hashinfo->ehash_locks[i],
while packet processing can use the reverse locking order.

We could avoid this locking for TCP_LISTEN states, but lockdep would
certainly get confused as all TCP sockets share same lockdep classes.

[  523.722504] ======================================================
[  523.728706] [ INFO: possible circular locking dependency detected ]
[  523.734990] 4.1.0-dbg-DEV #1676 Not tainted
[  523.739202] -------------------------------------------------------
[  523.745474] ss/18032 is trying to acquire lock:
[  523.750002]  (slock-AF_INET){+.-...}, at: [<ffffffff81669d44>] tcp_get_info+0x2c4/0x360
[  523.758129]
[  523.758129] but task is already holding lock:
[  523.763968]  (&(&hashinfo->ehash_locks[i])->rlock){+.-...}, at: [<ffffffff816bcb75>] inet_diag_dump_icsk+0x1d5/0x6c0
[  523.774661]
[  523.774661] which lock already depends on the new lock.
[  523.774661]
[  523.782850]
[  523.782850] the existing dependency chain (in reverse order) is:
[  523.790326]
-> #1 (&(&hashinfo->ehash_locks[i])->rlock){+.-...}:
[  523.796599]        [<ffffffff811126bb>] lock_acquire+0xbb/0x270
[  523.802565]        [<ffffffff816f5868>] _raw_spin_lock+0x38/0x50
[  523.808628]        [<ffffffff81665af8>] __inet_hash_nolisten+0x78/0x110
[  523.815273]        [<ffffffff816819db>] tcp_v4_syn_recv_sock+0x24b/0x350
[  523.822067]        [<ffffffff81684d41>] tcp_check_req+0x3c1/0x500
[  523.828199]        [<ffffffff81682d09>] tcp_v4_do_rcv+0x239/0x3d0
[  523.834331]        [<ffffffff816842fe>] tcp_v4_rcv+0xa8e/0xc10
[  523.840202]        [<ffffffff81658fa3>] ip_local_deliver_finish+0x133/0x3e0
[  523.847214]        [<ffffffff81659a9a>] ip_local_deliver+0xaa/0xc0
[  523.853440]        [<ffffffff816593b8>] ip_rcv_finish+0x168/0x5c0
[  523.859624]        [<ffffffff81659db7>] ip_rcv+0x307/0x420

Lets use u64_sync infrastructure instead. As a bonus, 64bit
arches get optimized, as these are nop for them.

Fixes: 0df48c26d8 ("tcp: add tcpi_bytes_acked to tcp_info")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-22 13:46:06 -04:00
Dave Airlie
a8106b147f Merge branch 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Just two small DP fixes for 4.1

* 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix error flag checking in native aux path
  drm/radeon: retry dcpd fetch
2015-05-22 13:31:54 +10:00
Dave Airlie
bb4358973a Merge tag 'drm-intel-fixes-2015-05-21' of git://anongit.freedesktop.org/drm-intel into drm-fixes
There's a stable backport from Ander [1] that combines this and a few
other commits to fix the flickering on v4.0, reported in [2] among
others. Having this upstream is obviously a requirement for stable.

* tag 'drm-intel-fixes-2015-05-21' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: fix screen flickering
2015-05-22 13:31:03 +10:00
Harald Freudenberger
a1cae34e23 crypto: s390/ghash - Fix incorrect ghash icv buffer handling.
Multitheaded tests showed that the icv buffer in the current ghash
implementation is not handled correctly. A move of this working ghash
buffer value to the descriptor context fixed this. Code is tested and
verified with an multithreaded application via af_alg interface.

Cc: stable@vger.kernel.org
Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Gerald Schaefer <geraldsc@linux.vnet.ibm.com>
Reported-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:23:03 +08:00
Linus Torvalds
865d872280 xen: bug fixes for 4.1-rc4
- Fix ARM build regression.
 - Fix VIRQ_CONSOLE related oops.
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Merge tag 'for-linus-4.1b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull two xen bugfixes from David Vrabel:

 - fix ARM build regression.

 - fix VIRQ_CONSOLE related oops.

* tag 'for-linus-4.1b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: don't bind non-percpu VIRQs with percpu chip
  xen/arm: Define xen_arch_suspend()
2015-05-21 20:19:38 -07:00
Linus Torvalds
f0d8690ad4 This pull request includes a fix for two oopses, one on PPC
and on x86.  The rest is fixes for bugs with newer Intel
 processors.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "This includes a fix for two oopses, one on PPC and on x86.

  The rest is fixes for bugs with newer Intel processors"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm/fpu: Enable eager restore kvm FPU for MPX
  Revert "KVM: x86: drop fpu_activate hook"
  kvm: fix crash in kvm_vcpu_reload_apic_access_page
  KVM: MMU: fix SMAP virtualization
  KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages
  KVM: MMU: fix smap permission check
  KVM: PPC: Book3S HV: Fix list traversal in error case
2015-05-21 20:15:16 -07:00
Linus Torvalds
2f8126e396 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Bug fixes.

  Three for our crypto code, two for eBPF, and one memory management fix
  to get machines with memory > 8TB working"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: correct return value of pmd_pfn
  s390/crypto: fix stckf loop
  s390/zcrypt: Fix invalid domain handling during ap module unload
  s390/bpf: Fix gcov stack space problem
  s390/zcrypt: fixed ap poll timer behavior
  s390/bpf: Adjust ALU64_DIV/MOD to match interpreter change
2015-05-21 19:54:50 -07:00
Linus Torvalds
0c68e5bf6a sound fixes for 4.1-rc5
This batch became slightly large, just because I've been on vacation
 for the last two weeks.  Nothing to scare much here, all device-specific
 fixes, mostly small patches.
 
 Majority of patches are for HD-audio, especially Dell machines.
 The rest are small ASoC fixes for various codecs, and a USB-audio
 quirk.
 
 One PCM fix is included to ease the faulty condition checks in the
 case of two periods PCM buffers.
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Merge tag 'sound-4.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This batch became slightly large, just because I've been on vacation
  for the last two weeks.  Nothing to scare much here, all
  device-specific fixes, mostly small patches.

  Majority of patches are for HD-audio, especially Dell machines.  The
  rest are small ASoC fixes for various codecs, and a USB-audio quirk.

  One PCM fix is included to ease the faulty condition checks in the
  case of two periods PCM buffers"

* tag 'sound-4.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Disable widget power-saving for ALC292 & co
  ALSA: hda - Reduce verbs by node power-saves
  ALSA: sound/atmel/ac97c.c: remove unused variable
  ALSA: usb-audio: Add quirk for MS LifeCam Studio
  ALSA: pcm: Modify double acknowledged interrupts check condition
  ALSA: hda/realtek - ALC292 dock fix for Thinkpad L450
  ALSA: hda - Add Conexant codecs CX20721, CX20722, CX20723 and CX20724
  ALSA: hda - Fix headset mic and mic-in for a Dell desktop
  ASoC: wm8994: correct BCLK DIV 348 to 384
  ASoC: wm8960: fix "RINPUT3" audio route error
  ASoC: dapm: Modify widget stream name according to prefix
  ALSA: hda - Add headset mic quirk for Dell Inspiron 5548
  ASoC: rt5645: Fix mask for setting RT5645_DMIC_2_DP_GPIO12 bit
  ASoC: rt5645: Add ACPI match ID
  ALSA: hda/realtek - Add ALC298 alias name for Dell
  ASoC: uda1380: Avoid accessing i2c bus when codec is disabled
  ALSA: hda/realtek - Fix typo for ALC286/ALC288
  ASoC: mc13783: Fix wrong mask value used in mc13xxx_reg_rmw() calls
  ALSA: hda - Add headphone quirk for Lifebook E752
  ASoC: davinci-mcasp: Correct pm status check in suspend callback
2015-05-21 17:54:00 -07:00
Linus Torvalds
18658921a2 Merge branch 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal fixes from Zhang Rui:
 "Three fixes for Armada (380) and TI (dra7 and OMAP5) thermal soc
  drivers"

* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: armada: Update Armada 380 thermal sensor coefficients
  thermal: ti-soc-thermal: OMAP5: Implement Workaround for Errata i813
  thermal: ti-soc-thermal: dra7: Implement Workaround for Errata i814
2015-05-21 17:42:54 -07:00
Linus Torvalds
83ee4121b1 Changes for 4.1-rc4
A number of small, well contained bug fixes for ocrdma driver
   A simple fix for the connection negotiation sequence on IB
   Fix for broken AF_IB address on UD queue pair support
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull infiniband/rdma fixes from Doug Ledford:
 "This should hopefully be the last request for 4.1-rc for the RDMA
  stack.  It contains some late ocrdma fixes that I'm including because
  they are small and self contained.  It also contains two bug fixes
  that are simple and easily verified.

  Summary:

   - a number of small, well contained bug fixes for ocrdma driver

   - a simple fix for the connection negotiation sequence on IB

   - fix for broken AF_IB address on UD queue pair support"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/cma: Fix broken AF_IB UD support
  ib/cm: Change reject message type when destroying cm_id
  RDMA/ocrdma: Update ocrdma version number
  RDMA/ocrdma: Fail connection for MTU lesser than 512
  RDMA/ocrdma: Fix dmac resolution for link local address
  RDMA/ocrdma: Prevent allocation of DPP PDs if FW doesnt support it
  RDMA/ocrdma: Fix the request length for RDMA_QUERY_QP mailbox command to FW.
  RDMA/ocrdma: Use VID 0 if PFC is enabled and vlan is not configured
  RDMA/ocrdma: Fix QP state transition in destroy_qp
  RDMA/ocrdma: Report EQ full fatal error
  RDMA/ocrdma: Fix EQ destroy failure during driver unload
2015-05-21 17:36:23 -07:00