Commit Graph

377501 Commits

Author SHA1 Message Date
Bob Moore
88ec28603c ACPICA: Split buffer dump routines into separate file
To enhance configurability of ACPICA.  The new file is
utilities/utbuffer.c

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-16 00:52:22 +02:00
Rafael J. Wysocki
d9e455f53f ACPI / scan: Simplify ACPI driver probing
There is no particular reason why acpi_bus_driver_init() needs to be
a separate function and its location with respect to its only caller,
acpi_device_probe(), makes the code a bit difficult to follow.

Besides, it doesn't really make sense to check if 'device' is not
NULL in acpi_bus_driver_init(), because we've already dereferenced
dev->driver in acpi_device_probe() at that point and, moreover,
'device' cannot be NULL then, because acpi_device_probe() is called
via really_probe() (which also sets dev->driver for that matter).

For these reasons, drop acpi_bus_driver_init() altogether and move
the remaining code from it directly into acpi_device_probe().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-16 00:36:06 +02:00
Linus Torvalds
7d13205581 Linux 3.10-rc6 2013-06-15 11:51:07 -10:00
Linus Torvalds
e6694d984a ARM: SoC fixes for 3.10-rc
Another week, another batch of fixes for arm-soc platforms.
 
 Again, nothing controversial. A few more than would be ideal, but all
 are valid fixes. In particular the prima2 panic patch is critical since
 it fixes a problem where multiplatform kernels panic on all but prima2
 hardware.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRvKO7AAoJEIwa5zzehBx3AE4P+wdAbXkBzt5L/MIlg2vgfS4O
 5snAL6f/k1Yar7kJFL8o8jQ+DIPPo/Lq+kwJ+ZLOh4DkTIzd/JiJE5cGRlDwMF0R
 KCbZsvxDf7kYapor7Fg8YHDDgDfZNCvudkBcmRHMEWCJVRjVbXxqrTIRTxNqLZVk
 WyuZHKmLFj0/aY8K3Z+BhY8klWVmy6QsT8Cg+1la7qLXEoazXaEqLCSRhPSmvwCy
 3ykPpmLdt/1MzVCgq+llNuT7C9N9buOw/bdb0JCYvGWiRxnLi2ee+pimGfOLIYDx
 /eeMr091r7OOhFBsIPd8fzfzd5A2cEeR2USPhGEpFCKpPKv5gOF8m7ku2w62WDcN
 PrMsYy2N4idxOBpsvLqxx9bkZ8nRqSj2anX6GLqHdL2v4k4pS/kufIihdgjd5Oja
 xUvlzk0gVRc8wqENyluRYdrocm307p/URLu/s2EOTQ3ZOZOZ3PRjbEelxoKCp6Pd
 RvADywebFMVL6Qyp4D996rvPgWYFnkSIkiSZQwlUHEMUHdE5JPbxcfBGTO5l8tKI
 EehgZ6Xc28Jv/pGt5a5DbwNjUN4NPLe6jhMXEGEnOG0SZ+43Xfmlwj93Y96hReJq
 +/8AMXx/NaPNrdSoqZBR4GJ6KBM/DATx23dr9VMskX5rBGxYzBVln9ck9boYnqyq
 hg5z53tz0uTBtqot6W9v
 =c555
 -----END PGP SIGNATURE-----

Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "These are a little later than I planned on since I got caught up with
  handling merges for 3.11 most of the week.

  Another week, another batch of fixes for arm-soc platforms.

  Again, nothing controversial.  A few more than would be ideal, but all
  are valid fixes.  In particular the prima2 panic patch is critical
  since it fixes a problem where multiplatform kernels panic on all but
  prima2 hardware."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: SAMSUNG: pm: Adjust for pinctrl- and DT-enabled platforms
  ARM: prima2: fix incorrect panic usage
  arm: mvebu: armada-xp-{gp,openblocks-ax3-4}: specify PCIe range
  ARM: Kirkwood: handle mv88f6282 cpu in __kirkwood_variant().
  ARM: omap3: clock: fix wrong container_of in clock36xx.c
  ARM: dts: OMAP5: Fix missing PWM capability to timer nodes
  ARM: dts: omap4-panda|sdp: Fix mux for twl6030 IRQ pin and msecure line
  ARM: dts: AM33xx: Fix properties on gpmc node
  arm: omap2: fix AM33xx hwmod infos for UART2
  ARM: OMAP3: Fix iva2_pwrdm settings for 3703
2013-06-15 11:49:48 -10:00
Linus Torvalds
596fa9e6ef Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix RTNL locking in batman-adv, from Matthias Schiffer.

 2) Don't allow non-passthrough macvlan devices to set NOPROMISC via
    netlink, otherwise we can end up with corrupted promisc counter
    values on the device.  From Michael S Tsirkin.

 3) Fix stmmac driver build with debugging defines enabled, from Dinh
    Nguyen.

 4) Make sure name string we give in socket address in AF_PACKET is NULL
    terminated, from Daniel Borkmann.

 5) Fix leaking of two uninitialized bytes of memory to userspace in
    l2tp, from Guillaume Nault.

 6) Clear IPCB(skb) before tunneling otherwise we touch dangling IP
    options state and crash.  From Saurabh Mohan.

 7) Fix suspend/resume for davinci_mdio by using suspend_late and
    resume_early.  From Mugunthan V N.

 8) Don't tag ip_tunnel_init_net and ip_tunnel_delete_net with
    __net_{init,exit}, they can be called outside of those contexts.
    From Eric Dumazet.

 9) Fix RX length error in sh_eth driver, from Yoshihiro Shimoda.

10) Fix missing sctp_outq initialization in some code paths of SCTP
    stack, from Neil Horman.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (21 commits)
  sctp: fully initialize sctp_outq in sctp_outq_init
  netiucv: Hold rtnl between name allocation and device registration.
  tulip: Properly check dma mapping result
  net: sh_eth: fix incorrect RX length error if R8A7740
  ip_tunnel: remove __net_init/exit from exported functions
  drivers: net: davinci_mdio: restore mdio clk divider in mdio resume
  drivers: net: davinci_mdio: moving mdio resume earlier than cpsw ethernet driver
  net/ipv4: ip_vti clear skb cb before tunneling.
  tg3: Wait for boot code to finish after power on
  l2tp: Fix sendmsg() return value
  l2tp: Fix PPP header erasure and memory leak
  bonding: fix igmp_retrans type and two related races
  bonding: reset master mac on first enslave failure
  packet: packet_getname_spkt: make sure string is always 0-terminated
  net: ethernet: stmicro: stmmac: Fix compile error when STMMAC_XMIT_DEBUG used
  be2net: Fix 32-bit DMA Mask handling
  xen-netback: don't de-reference vif pointer after having called xenvif_put()
  macvlan: don't touch promisc without passthrough
  batman-adv: Don't handle address updates when bla is disabled
  batman-adv: forward late OGMs from best next hop
  ...
2013-06-15 11:47:56 -10:00
Chris Metcalf
3cb3f839d3 tilepro: work around module link error with gcc 4.7
gcc 4.7.x is emitting calls to __ffsdi2 where previously
it used to inline the appropriate ctz instructions.
While this needs to be fixed in gcc, it's also easy to avoid
having it cause build failures when building with those
compilers by exporting __ffsdi2 to modules.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: stable@kernel.org
2013-06-15 16:47:47 -04:00
Linus Torvalds
5938930e71 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
 "So here are 3 fixes still for 3.10.  Fixes are simple, bugs are nasty
  (though not recent regressions, nasty enough) and all targeted at
  stable"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix missing/delayed calls to irq_work
  powerpc: Fix emulation of illegal instructions on PowerNV platform
  powerpc: Fix stack overflow crash in resume_kernel when ftracing
2013-06-14 19:25:04 -10:00
David Daney
f21afc25f9 smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().
Thanks to commit f91eb62f71 ("init: scream bloody murder if interrupts
are enabled too early"), "bloody murder" is now being screamed.

With a MIPS OCTEON config, we use on_each_cpu() in our
irq_chip.irq_bus_sync_unlock() function.  This gets called in early as a
result of the time_init() call.  Because the !SMP version of
on_each_cpu() unconditionally enables irqs, we get:

    WARNING: at init/main.c:560 start_kernel+0x250/0x410()
    Interrupts were enabled early
    CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-rc5-Cavium-Octeon+ #801
    Call Trace:
      show_stack+0x68/0x80
      warn_slowpath_common+0x78/0xb0
      warn_slowpath_fmt+0x38/0x48
      start_kernel+0x250/0x410

Suggested fix: Do what we already do in the SMP version of
on_each_cpu(), and use local_irq_save/local_irq_restore.  Because we
need a flags variable, make it a static inline to avoid name space
issues.

[ Change from v1: Convert on_each_cpu to a static inline function, add
  #include <linux/irqflags.h> to avoid build breakage on some files.

  on_each_cpu_mask() and on_each_cpu_cond() suffer the same problem as
  on_each_cpu(), but they are not causing !SMP bugs for me, so I will
  defer changing them to a less urgent patch. ]

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-06-14 19:24:42 -10:00
Linus Torvalds
d0ff934881 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS fixes from Al Viro:
 "Several fixes + obvious cleanup (you've missed a couple of open-coded
  can_lookup() back then)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  snd_pcm_link(): fix a leak...
  use can_lookup() instead of direct checks of ->i_op->lookup
  move exit_task_namespaces() outside of exit_notify()
  fput: task_work_add() can fail if the caller has passed exit_task_work()
  ncpfs: fix rmdir returns Device or resource busy
2013-06-14 19:18:56 -10:00
Linus Torvalds
d58c6ff0b7 xfs: fixes for 3.10-rc6
- Remove noisy warnings about experimental support which spams the logs
 - Add padding to align directory and attr structures correctly
 - Set block number on child buffer on a root btree split
 - Disable verifiers during log recovery for non-CRC filesystems
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.10 (GNU/Linux)
 
 iQIcBAABAgAGBQJRu4gPAAoJENaLyazVq6ZO0GwP/j7i8hEl6hoFZZJ2WX7niFCP
 t0r218J9JZDCLSk7+rY26gmxOzifRHAIt5TRwwqSCbNnZbuQZsqFUpvDMSMY3XOj
 4qnUlO6diRLonN5ixrOb5YMTQJ8YHG7cB4jvxBDAqPqEfNpRyqikxstcH6KBmtSU
 duqhuQMdmHAjMUqfpdt5ewueOCmw6jI79ZqvMnEfSHW7YS7G4SrKYa71HkfRR6CD
 +K/FqEoDO/9psbsFlrkQ4Uvqngp8c9c0wQULxreN0BSdRbVqHfrS6eAWGhT3K2HW
 7ZGxEiTcwR5XCtDQjhw7vbZQEMeMcl6yZ6J7e+jJc53maySOOrqCaYyyrhzZFw4H
 Xh52pcVJtGuGVBHDxpfhI5e7KI4DjEugQK9AaONy02bhhTh3r3CKu5pprDyenyHr
 9s/DG8u/gJX8tm8DSBlIXv2iCvY4mTeesYkMaLHgC8uLXmItkRBoUaj1NQvnsTqo
 EF1xVVqh3aiueD4+cvu3+x4J4dTFmYQ++Oi3Zt1YpjBBb/h3n3KFUfizhRIp9r43
 R4UO5W3b6s4q/1oC+bO6Qlxfny9vcyz+UrkcLpbuo+cRTC3bKi85v2Gaaw69bcB1
 1SZCFRuVvDvzffX6Nir699Dj/uU4GETvDw/+y/igcKcETx6L4AgQPV9y/izJq5zr
 zLhC+OSCDvuOGaOmRvco
 =bijX
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-v3.10-rc6' of git://oss.sgi.com/xfs/xfs

Pull xfs fixes from Ben Myers:
 - Remove noisy warnings about experimental support which spams the logs
 - Add padding to align directory and attr structures correctly
 - Set block number on child buffer on a root btree split
 - Disable verifiers during log recovery for non-CRC filesystems

* tag 'for-linus-v3.10-rc6' of git://oss.sgi.com/xfs/xfs:
  xfs: don't shutdown log recovery on validation errors
  xfs: ensure btree root split sets blkno correctly
  xfs: fix implicit padding in directory and attr CRC formats
  xfs: don't emit v5 superblock warnings on write
2013-06-14 19:16:31 -10:00
Linus Torvalds
9bb92855e3 Char / Misc fixes for 3.10-rc6
Here are some small mei driver fixes for 3.10-rc6 that fix some reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iEYEABECAAYFAlG7RgwACgkQMUfUDdst+ynQjgCcCed/djDG6rEk8OHNwtH0qsGE
 3o4AnjEW26lnses9dpudJOzhFGggCKJt
 =wN5b
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc fixes from Greg Kroah-Hartman:
 "Here are some small mei driver fixes for 3.10-rc6 that fix some
  reported problems"

* tag 'char-misc-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mei: me: clear interrupts on the resume path
  mei: nfc: fix nfc device freeing
  mei: init: Flush scheduled work before resetting the device
2013-06-14 19:15:36 -10:00
Linus Torvalds
3ad2e318a2 USB fixes for 3.10-rc6
Here are some small USB driver fixes that resolve some reported problems
 for 3.10-rc6
 
 Nothing major, just 3 USB serial driver fixes, and two chipidea fixes.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iEYEABECAAYFAlG7Rq0ACgkQMUfUDdst+ykKmwCg0mta+HehUtBYrhLJGq9uADix
 0YMAn1hEPP26BhVl/7a6GL+s8UoSVFxo
 =9Vkq
 -----END PGP SIGNATURE-----

Merge tag 'usb-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg Kroah-Hartman:
 "Here are some small USB driver fixes that resolve some reported
  problems for 3.10-rc6

  Nothing major, just 3 USB serial driver fixes, and two chipidea fixes"

* tag 'usb-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: chipidea: fix id change handling
  usb: chipidea: fix no transceiver case
  USB: pl2303: fix device initialisation at open
  USB: spcp8x5: fix device initialisation at open
  USB: f81232: fix device initialisation at open
2013-06-14 19:14:39 -10:00
Benjamin Herrenschmidt
230b303479 powerpc: Fix missing/delayed calls to irq_work
When replaying interrupts (as a result of the interrupt occurring
while soft-disabled), in the case of the decrementer, we are exclusively
testing for a pending timer target. However we also use decrementer
interrupts to trigger the new "irq_work", which in this case would
be missed.

This change the logic to force a replay in both cases of a timer
boundary reached and a decrementer interrupt having actually occurred
while disabled. The former test is still useful to catch cases where
a CPU having been hard-disabled for a long time completely misses the
interrupt due to a decrementer rollover.

CC: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
2013-06-15 12:33:30 +10:00
Paul Mackerras
bf593907f7 powerpc: Fix emulation of illegal instructions on PowerNV platform
Normally, the kernel emulates a few instructions that are unimplemented
on some processors (e.g. the old dcba instruction), or privileged (e.g.
mfpvr).  The emulation of unimplemented instructions is currently not
working on the PowerNV platform.  The reason is that on these machines,
unimplemented and illegal instructions cause a hypervisor emulation
assist interrupt, rather than a program interrupt as on older CPUs.
Our vector for the emulation assist interrupt just calls
program_check_exception() directly, without setting the bit in SRR1
that indicates an illegal instruction interrupt.  This fixes it by
making the emulation assist interrupt set that bit before calling
program_check_interrupt().  With this, old programs that use no-longer
implemented instructions such as dcba now work again.

CC: <stable@vger.kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-06-15 12:24:11 +10:00
Michael Ellerman
0e37739b1c powerpc: Fix stack overflow crash in resume_kernel when ftracing
It's possible for us to crash when running with ftrace enabled, eg:

  Bad kernel stack pointer bffffd12 at c00000000000a454
  cpu 0x3: Vector: 300 (Data Access) at [c00000000ffe3d40]
      pc: c00000000000a454: resume_kernel+0x34/0x60
      lr: c00000000000335c: performance_monitor_common+0x15c/0x180
      sp: bffffd12
     msr: 8000000000001032
     dar: bffffd12
   dsisr: 42000000

If we look at current's stack (paca->__current->stack) we see it is
equal to c0000002ecab0000. Our stack is 16K, and comparing to
paca->kstack (c0000002ecab3e30) we can see that we have overflowed our
kernel stack. This leads to us writing over our struct thread_info, and
in this case we have corrupted thread_info->flags and set
_TIF_EMULATE_STACK_STORE.

Dumping the stack we see:

  3:mon> t c0000002ecab0000
  [c0000002ecab0000] c00000000002131c .performance_monitor_exception+0x5c/0x70
  [c0000002ecab0080] c00000000000335c performance_monitor_common+0x15c/0x180
  --- Exception: f01 (Performance Monitor) at c0000000000fb2ec .trace_hardirqs_off+0x1c/0x30
  [c0000002ecab0370] c00000000016fdb0 .trace_graph_entry+0xb0/0x280 (unreliable)
  [c0000002ecab0410] c00000000003d038 .prepare_ftrace_return+0x98/0x130
  [c0000002ecab04b0] c00000000000a920 .ftrace_graph_caller+0x14/0x28
  [c0000002ecab0520] c0000000000d6b58 .idle_cpu+0x18/0x90
  [c0000002ecab05a0] c00000000000a934 .return_to_handler+0x0/0x34
  [c0000002ecab0620] c00000000001e660 .timer_interrupt+0x160/0x300
  [c0000002ecab06d0] c0000000000025dc decrementer_common+0x15c/0x180
  --- Exception: 901 (Decrementer) at c0000000000104d4 .arch_local_irq_restore+0x74/0xa0
  [c0000002ecab09c0] c0000000000fe044 .trace_hardirqs_on+0x14/0x30 (unreliable)
  [c0000002ecab0fb0] c00000000016fe3c .trace_graph_entry+0x13c/0x280
  [c0000002ecab1050] c00000000003d038 .prepare_ftrace_return+0x98/0x130
  [c0000002ecab10f0] c00000000000a920 .ftrace_graph_caller+0x14/0x28
  [c0000002ecab1160] c0000000000161f0 .__ppc64_runlatch_on+0x10/0x40
  [c0000002ecab11d0] c00000000000a934 .return_to_handler+0x0/0x34
  --- Exception: 901 (Decrementer) at c0000000000104d4 .arch_local_irq_restore+0x74/0xa0

  ... and so on

__ppc64_runlatch_on() is called from RUNLATCH_ON in the exception entry
path. At that point the irq state is not consistent, ie. interrupts are
hard disabled (by the exception entry), but the paca soft-enabled flag
may be out of sync.

This leads to the local_irq_restore() in trace_graph_entry() actually
enabling interrupts, which we do not want. Because we have not yet
reprogrammed the decrementer we immediately take another decrementer
exception, and recurse.

The fix is twofold. Firstly make sure we call DISABLE_INTS before
calling RUNLATCH_ON. The badly named DISABLE_INTS actually reconciles
the irq state in the paca with the hardware, making it safe again to
call local_irq_save/restore().

Although that should be sufficient to fix the bug, we also mark the
runlatch routines as notrace. They are called very early in the
exception entry and we are asking for trouble tracing them. They are
also fairly uninteresting and tracing them just adds unnecessary
overhead.

[ This regression was introduced by fe1952fc0a
  "powerpc: Rework runlatch code" by myself --BenH
]

CC: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-06-15 12:21:57 +10:00
Al Viro
dd6c5cd8fe snd_pcm_link(): fix a leak...
in case when snd_pcm_stream_linked(substream) is true, we end up leaking
group.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-15 05:42:42 +04:00
Al Viro
0525290119 use can_lookup() instead of direct checks of ->i_op->lookup
a couple of places got missed back when Linus has introduced that one...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-15 05:41:45 +04:00
Oleg Nesterov
8aac62706a move exit_task_namespaces() outside of exit_notify()
exit_notify() does exit_task_namespaces() after
forget_original_parent(). This was needed to ensure that ->nsproxy
can't be cleared prematurely, an exiting child we are going to
reparent can do do_notify_parent() and use the parent's (ours) pid_ns.

However, after 32084504 "pidns: use task_active_pid_ns in
do_notify_parent" ->nsproxy != NULL is no longer needed, we rely
on task_active_pid_ns().

Move exit_task_namespaces() from exit_notify() to do_exit(), after
exit_fs() and before exit_task_work().

This solves the problem reported by Andrey, free_ipc_ns()->shm_destroy()
does fput() which needs task_work_add().

Note: this particular problem can be fixed if we change fput(), and
that change makes sense anyway. But there is another reason to move
the callsite. The original reason for exit_task_namespaces() from
the middle of exit_notify() was subtle and it has already gone away,
now this looks confusing. And this allows us do simplify exit_notify(),
we can avoid unlock/lock(tasklist) and we can use ->exit_state instead
of PF_EXITING in forget_original_parent().

Reported-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-15 05:39:08 +04:00
Oleg Nesterov
e7b2c40692 fput: task_work_add() can fail if the caller has passed exit_task_work()
fput() assumes that it can't be called after exit_task_work() but
this is not true, for example free_ipc_ns()->shm_destroy() can do
this. In this case fput() silently leaks the file.

Change it to fallback to delayed_fput_work if task_work_add() fails.
The patch looks complicated but it is not, it changes the code from

	if (PF_KTHREAD) {
		schedule_work(...);
		return;
	}
	task_work_add(...)

to
	if (!PF_KTHREAD) {
		if (!task_work_add(...))
			return;
		/* fallback */
	}
	schedule_work(...);

As for shm_destroy() in particular, we could make another fix but I
think this change makes sense anyway. There could be another similar
user, it is not safe to assume that task_work_add() can't fail.

Reported-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-15 05:39:08 +04:00
Alex Deucher
c139b1ee4e drm/radeon: fix UVD on big endian
This fixes the kernel side so that the ring should come
up and ring and IB tests should work.  The userspace
UVD drivers will also need big endian fixes.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-06-14 17:05:57 -04:00
James Bottomley
29ce3785b2 idle: Enable interrupts in the weak arch_cpu_idle() implementation
PARISC bootup triggers the warning at kernel/cpu/idle.c:96. That's
caused by the weak arch_cpu_idle() implementation, which is provided
to avoid that architectures implement idle_poll over and over.

The switchover to polling mode happens in the first call of the weak
arch_cpu_idle() implementation, but that code fails to reenable
interrupts and therefor triggers the warning.

Fix this by enabling interrupts in the weak arch_cpu_idle() code.

[ tglx: Made the changelog match the patch ]

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1371236142.2726.43.camel@dabdike
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2013-06-14 23:01:05 +02:00
Dave Chinner
d302cf1d31 xfs: don't shutdown log recovery on validation errors
Unfortunately, we cannot guarantee that items logged multiple times
and replayed by log recovery do not take objects back in time. When
they are taken back in time, the go into an intermediate state which
is corrupt, and hence verification that occurs on this intermediate
state causes log recovery to abort with a corruption shutdown.

Instead of causing a shutdown and unmountable filesystem, don't
verify post-recovery items before they are written to disk. This is
less than optimal, but there is no way to detect this issue for
non-CRC filesystems If log recovery successfully completes, this
will be undone and the object will be consistent by subsequent
transactions that are replayed, so in most cases we don't need to
take drastic action.

For CRC enabled filesystems, leave the verifiers in place - we need
to call them to recalculate the CRCs on the objects anyway. This
recovery problem can be solved for such filesystems - we have a LSN
stamped in all metadata at writeback time that we can to determine
whether the item should be replayed or not. This is a separate piece
of work, so is not addressed by this patch.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

(cherry picked from commit 9222a9cf86)
2013-06-14 15:59:45 -05:00
Dave Chinner
088c9f67c3 xfs: ensure btree root split sets blkno correctly
For CRC enabled filesystems, the BMBT is rooted in an inode, so it
passes through a different code path on root splits than the
freespace and inode btrees. This is much less traversed by xfstests
than the other trees. When testing on a 1k block size filesystem,
I've been seeing ASSERT failures in generic/234 like:

XFS: Assertion failed: cur->bc_btnum != XFS_BTNUM_BMAP || cur->bc_private.b.allocated == 0, file: fs/xfs/xfs_btree.c, line: 317

which are generally preceded by a lblock check failure. I noticed
this in the bmbt stats:

$ pminfo -f xfs.btree.block_map

xfs.btree.block_map.lookup
    value 39135

xfs.btree.block_map.compare
    value 268432

xfs.btree.block_map.insrec
    value 15786

xfs.btree.block_map.delrec
    value 13884

xfs.btree.block_map.newroot
    value 2

xfs.btree.block_map.killroot
    value 0
.....

Very little coverage of root splits and merges. Indeed, on a 4k
filesystem, block_map.newroot and block_map.killroot are both zero.
i.e. the code is not exercised at all, and it's the only generic
btree infrastructure operation that is not exercised by a default run
of xfstests.

Turns out that on a 1k filesystem, generic/234 accounts for one of
those two root splits, and that is somewhat of a smoking gun. In
fact, it's the same problem we saw in the directory/attr code where
headers are memcpy()d from one block to another without updating the
self describing metadata.

Simple fix - when copying the header out of the root block, make
sure the block number is updated correctly.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

(cherry picked from commit ade1335afe)
2013-06-14 15:59:31 -05:00
Dave Chinner
5170711df7 xfs: fix implicit padding in directory and attr CRC formats
Michael L. Semon has been testing CRC patches on a 32 bit system and
been seeing assert failures in the directory code from xfs/080.
Thanks to Michael's heroic efforts with printk debugging, we found
that the problem was that the last free space being left in the
directory structure was too small to fit a unused tag structure and
it was being corrupted and attempting to log a region out of bounds.
Hence the assert failure looked something like:

.....
#5 calling xfs_dir2_data_log_unused() 36 32
#1 4092 4095 4096
#2 8182 8183 4096
XFS: Assertion failed: first <= last && last < BBTOB(bp->b_length), file: fs/xfs/xfs_trans_buf.c, line: 568

Where #1 showed the first region of the dup being logged (i.e. the
last 4 bytes of a directory buffer) and #2 shows the corrupt values
being calculated from the length of the dup entry which overflowed
the size of the buffer.

It turns out that the problem was not in the logging code, nor in
the freespace handling code. It is an initial condition bug that
only shows up on 32 bit systems. When a new buffer is initialised,
where's the freespace that is set up:

[  172.316249] calling xfs_dir2_leaf_addname() from xfs_dir_createname()
[  172.316346] #9 calling xfs_dir2_data_log_unused()
[  172.316351] #1 calling xfs_trans_log_buf() 60 63 4096
[  172.316353] #2 calling xfs_trans_log_buf() 4094 4095 4096

Note the offset of the first region being logged? It's 60 bytes into
the buffer. Once I saw that, I pretty much knew that the bug was
going to be caused by this.

Essentially, all direct entries are rounded to 8 bytes in length,
and all entries start with an 8 byte alignment. This means that we
can decode inplace as variables are naturally aligned. With the
directory data supposedly starting on a 8 byte boundary, and all
entries padded to 8 bytes, the minimum freespace in a directory
block is supposed to be 8 bytes, which is large enough to fit a
unused data entry structure (6 bytes in size). The fact we only have
4 bytes of free space indicates a directory data block alignment
problem.

And what do you know - there's an implicit hole in the directory
data block header for the CRC format, which means the header is 60
byte on 32 bit intel systems and 64 bytes on 64 bit systems. Needs
padding. And while looking at the structures, I found the same
problem in the attr leaf header. Fix them both.

Note that this only affects 32 bit systems with CRCs enabled.
Everything else is just fine. Note that CRC enabled filesystems created
before this fix on such systems will not be readable with this fix
applied.

Reported-by: Michael L. Semon <mlsemon35@gmail.com>
Debugged-by: Michael L. Semon <mlsemon35@gmail.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

(cherry picked from commit 8a1fd2950e)
2013-06-14 15:59:16 -05:00
Dave Chinner
47ad2fcba9 xfs: don't emit v5 superblock warnings on write
We write the superblock every 30s or so which results in the
verifier being called. Right now that results in this output
every 30s:

XFS (vda): Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled!
Use of these features in this kernel is at your own risk!

And spamming the logs.

We don't need to check for whether we support v5 superblocks or
whether there are feature bits we don't support set as these are
only relevant when we first mount the filesytem. i.e. on superblock
read. Hence for the write verification we can just skip all the
checks (and hence verbose output) altogether.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

(cherry picked from commit 34510185ab)
2013-06-14 15:58:47 -05:00
Roland Dreier
b5aff3d274 tcm_qla2xxx: Fix residual for underrun commands that fail
Suppose an initiator sends a DATA IN command with an allocation length
shorter than the FC transfer length -- we get a target message like

    TARGET_CORE[qla2xxx]: Expected Transfer Length: 256 does not match SCSI CDB Length: 0 for SAM Opcode: 0x12

In that case, the target core adjusts the data_length and sets
se_cmd->residual_count for the underrun.  But now suppose that command
fails and we end up in tcm_qla2xxx_queue_status() -- that function
unconditionally overwrites residual_count with the already adjusted
data_length, and the initiator will burp with a message like

    qla2xxx [0000:00:06.0]-301d:0: Dropped frame(s) detected (0x100 of 0x100 bytes).

Fix this by adding on to the existing underflow residual count instead.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-06-14 01:12:56 -07:00
Jörn Engel
574780fd5e target/iscsi: don't corrupt bh_count in iscsit_stop_time2retain_timer()
Here is a fun one.  Bug seems to have been introduced by commit 140854cb,
almost two years ago.  I have no idea why we only started seeing it now,
but we did.

Rough callgraph:
core_tpg_set_initiator_node_queue_depth()
`-> spin_lock_irqsave(&tpg->session_lock, flags);
`-> lio_tpg_shutdown_session()
    `-> iscsit_stop_time2retain_timer()
        `-> spin_unlock_bh(&se_tpg->session_lock);
        `-> spin_lock_bh(&se_tpg->session_lock);
`-> spin_unlock_irqrestore(&tpg->session_lock, flags);

core_tpg_set_initiator_node_queue_depth() used to call spin_lock_bh(),
but 140854cb changed that to spin_lock_irqsave().  However,
lio_tpg_shutdown_session() still claims to be called with spin_lock_bh()
held, as does iscsit_stop_time2retain_timer():
 *      Called with spin_lock_bh(&struct se_portal_group->session_lock) held

Stale documentation is mostly annoying, but in this case the dropping
the lock with the _bh variant is plain wrong.  It is also wrong to drop
locks two functions below the lock-holder, but I will ignore that bit
for now.

After some more locking and unlocking we eventually hit this backtrace:
------------[ cut here ]------------
WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0xe8/0x100()
Pid: 24645, comm: lio_helper.py Tainted: G           O 3.6.11+
Call Trace:
 [<ffffffff8103e5ff>] warn_slowpath_common+0x7f/0xc0
 [<ffffffffa040ae37>] ? iscsit_inc_conn_usage_count+0x37/0x50 [iscsi_target_mod]
 [<ffffffff8103e65a>] warn_slowpath_null+0x1a/0x20
 [<ffffffff810472f8>] local_bh_enable_ip+0xe8/0x100
 [<ffffffff815b8365>] _raw_spin_unlock_bh+0x15/0x20
 [<ffffffffa040ae37>] iscsit_inc_conn_usage_count+0x37/0x50 [iscsi_target_mod]
 [<ffffffffa041149a>] iscsit_stop_session+0xfa/0x1c0 [iscsi_target_mod]
 [<ffffffffa0417fab>] lio_tpg_shutdown_session+0x7b/0x90 [iscsi_target_mod]
 [<ffffffffa033ede4>] core_tpg_set_initiator_node_queue_depth+0xe4/0x290 [target_core_mod]
 [<ffffffffa0409032>] iscsit_tpg_set_initiator_node_queue_depth+0x12/0x20 [iscsi_target_mod]
 [<ffffffffa0415c29>] lio_target_nacl_store_cmdsn_depth+0xa9/0x180 [iscsi_target_mod]
 [<ffffffffa0331b49>] target_fabric_nacl_base_attr_store+0x39/0x40 [target_core_mod]
 [<ffffffff811b857d>] configfs_write_file+0xbd/0x120
 [<ffffffff81148f36>] vfs_write+0xc6/0x180
 [<ffffffff81149251>] sys_write+0x51/0x90
 [<ffffffff815c0969>] system_call_fastpath+0x16/0x1b
---[ end trace 3747632b9b164652 ]---

As a pure band-aid, this patch drops the _bh.

Signed-off-by: Joern Engel <joern@logfs.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-06-14 00:55:49 -07:00
Linus Torvalds
a2648ebb7e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "This is an assortment of crash fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: stop all workers before cleaning up roots
  Btrfs: fix use-after-free bug during umount
  Btrfs: init relocate extent_io_tree with a mapping
  btrfs: Drop inode if inode root is NULL
  Btrfs: don't delete fs_roots until after we cleanup the transaction
2013-06-13 22:34:14 -07:00
Tomas Winkler
42f132febf mei: me: clear interrupts on the resume path
We need to clear pending interrupts on the resume
path. This brings the device into defined state
before starting the reset flow

This should solve suspend/resume issues:

mei_me : wait hw ready failed. status = 0x0
mei_me : version message write failed

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-13 22:31:07 -07:00
Tomas Winkler
2753ff53d4 mei: nfc: fix nfc device freeing
The nfc_dev is a static variable and is not cleaned properly upon reset
mainly ndev->cl and ndev->cl_info are not set to NULL after freeing which

mei_stop:198: mei_me 0000:00:16.0: stopping the device.
[  404.253427] general protection fault: 0000 [#2] SMP
[  404.253437] Modules linked in: mei_me(-) binfmt_misc snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device edd af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave fuse loop dm_mod hid_generic usbhid hid coretemp acpi_cpufreq mperf kvm_intel kvm crc32c_intel ghash_clmulni_intel aesni_intel ablk_helper cryptd lrw gf128mul snd_hda_codec_hdmi glue_helper aes_x86_64 e1000e snd_hda_intel snd_hda_codec ehci_pci iTCO_wdt iTCO_vendor_support ehci_hcd snd_hwdep xhci_hcd snd_pcm usbcore ptp mei sg microcode snd_timer pps_core i2c_i801 snd pcspkr battery rtc_cmos lpc_ich mfd_core soundcore usb_common snd_page_alloc ac ext3 jbd mbcache drm_kms_helper drm intel_agp i2c_algo_bit intel_gtt i2c_core sd_mod crc_t10dif thermal fan video button processor thermal_sys hwmon ahci libahci libata scsi_mod [last unloaded: mei_me]
[  404.253591] CPU: 0 PID: 5551 Comm: modprobe Tainted: G      D W    3.10.0-rc3 #1
[  404.253611] task: ffff880143cd8300 ti: ffff880144a2a000 task.ti: ffff880144a2a000
[  404.253619] RIP: 0010:[<ffffffff81334e5d>]  [<ffffffff81334e5d>] device_del+0x1d/0x1d0
[  404.253638] RSP: 0018:ffff880144a2bcf8  EFLAGS: 00010206
[  404.253645] RAX: 2020302e30202030 RBX: ffff880144fdb000 RCX: 0000000000000086
[  404.253652] RDX: 0000000000000001 RSI: 0000000000000086 RDI: ffff880144fdb000
[  404.253659] RBP: ffff880144a2bd18 R08: 0000000000000651 R09: 0000000000000006
[  404.253666] R10: 0000000000000651 R11: 0000000000000006 R12: ffff880144fdb000
[  404.253673] R13: ffff880149371098 R14: ffff880144482c00 R15: ffffffffa04710e0
[  404.253681] FS:  00007f251c59a700(0000) GS:ffff88014e200000(0000) knlGS:0000000000000000
[  404.253689] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  404.253696] CR2: ffffffffff600400 CR3: 0000000145319000 CR4: 00000000001407f0
[  404.253703] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  404.253710] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  404.253716] Stack:
[  404.253720]  ffff880144fdb000 ffff880143ffe000 ffff880149371098 ffffffffa0471000
[  404.253732]  ffff880144a2bd38 ffffffff8133502d ffff88014e20cf48 ffff880143ffe1d8
[  404.253744]  ffff880144a2bd48 ffffffffa02a4749 ffff880144a2bd58 ffffffffa02a4ba1
[  404.253755] Call Trace:
[  404.253766]  [<ffffffff8133502d>] device_unregister+0x1d/0x60
[  404.253787]  [<ffffffffa02a4749>] mei_cl_remove_device+0x9/0x10 [mei]
[  404.253804]  [<ffffffffa02a4ba1>] mei_nfc_host_exit+0x21/0x30 [mei]
[  404.253819]  [<ffffffffa029c2dd>] mei_stop+0x3d/0x90 [mei]
[  404.253830]  [<ffffffffa046e220>] mei_me_remove+0x60/0xe0 [mei_me]
[  404.253843]  [<ffffffff81278f37>] pci_device_remove+0x37/0xb0
[  404.253855]  [<ffffffff81337c68>] __device_release_driver+0x98/0x100
[  404.253865]  [<ffffffff81337d80>] driver_detach+0xb0/0xc0
[  404.253876]  [<ffffffff81336b4f>] bus_remove_driver+0x8f/0x120
[  404.253891]  [<ffffffff81075990>] ? try_to_wake_up+0x2b0/0x2b0
[  404.253903]  [<ffffffff81338a48>] driver_unregister+0x58/0x90
[  404.253913]  [<ffffffff8127906b>] pci_unregister_driver+0x2b/0xb0
[  404.253924]  [<ffffffffa046f244>] mei_me_driver_exit+0x10/0xdcc [mei_me]
[  404.253936]  [<ffffffff810a50d8>] SyS_delete_module+0x198/0x2b0
[  404.253949]  [<ffffffff814850d9>] ? do_page_fault+0x9/0x10
[  404.253961]  [<ffffffff81489692>] system_call_fastpath+0x16/0x1b
[  404.253967] Code: 41 5c 41 5d 41 5e 41 5f c9 c3 0f 1f 40 00 55 48 89 e5 41 56 41 55 41 54 49 89 fc 53 48 8b 87 88 00 00 00 4c 8b 37 48 85 c0 74 18 <48> 8b 78 78 4c 89 e2 be 02 00 00 00 48 81 c7 f8 00 00 00 e8 3b
[  404.254048] RIP  [<ffffffff81334e5d>] device_del+0x1d/0x1d0

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-13 22:31:06 -07:00
Samuel Ortiz
5e85b36448 mei: init: Flush scheduled work before resetting the device
Flushing pending work items before resetting the device makes more
sense than doing so afterwards. Some of them, like e.g. the NFC
initialization one, find themselves with client IDs changed after
the reset, eventually leading to trigger a client.c:mei_me_cl_by_id()
warning after a few modprobe/rmmod cycles.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-13 22:31:05 -07:00
Neil Horman
c5c7774d7e sctp: fully initialize sctp_outq in sctp_outq_init
In commit 2f94aabd9f
(refactor sctp_outq_teardown to insure proper re-initalization)
we modified sctp_outq_teardown to use sctp_outq_init to fully re-initalize the
outq structure.  Steve West recently asked me why I removed the q->error = 0
initalization from sctp_outq_teardown.  I did so because I was operating under
the impression that sctp_outq_init would properly initalize that value for us,
but it doesn't.  sctp_outq_init operates under the assumption that the outq
struct is all 0's (as it is when called from sctp_association_init), but using
it in __sctp_outq_teardown violates that assumption. We should do a memset in
sctp_outq_init to ensure that the entire structure is in a known state there
instead.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: "West, Steve (NSN - US/Fort Worth)" <steve.west@nsn.com>
CC: Vlad Yasevich <vyasevich@gmail.com>
CC: netdev@vger.kernel.org
CC: davem@davemloft.net
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-13 18:05:24 -07:00
Benjamin Poirier
aaf9522d62 netiucv: Hold rtnl between name allocation and device registration.
fixes a race condition between concurrent initializations of netiucv devices
that try to use the same name.

sysfs: cannot create duplicate filename '/devices/iucv/netiucv2'
[...]
Call Trace:
([<00000000002edea4>] sysfs_add_one+0xb0/0xdc)
 [<00000000002eecd4>] create_dir+0x80/0xfc
 [<00000000002eee38>] sysfs_create_dir+0xe8/0x118
 [<00000000003835a8>] kobject_add_internal+0x120/0x2d0
 [<00000000003839d6>] kobject_add+0x62/0x9c
 [<00000000003d9564>] device_add+0xcc/0x510
 [<000003e00212c7b4>] netiucv_register_device+0xc0/0x1ec [netiucv]

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Tested-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-13 17:41:18 -07:00
Neil Horman
c9bfbb31af tulip: Properly check dma mapping result
Tulip throws an error when dma debugging is enabled, as it doesn't properly
check dma mapping results with dma_mapping_error() durring tx ring refills.

Easy fix, just add it in, and drop the frame if the mapping is bad

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Grant Grundler <grundler@parisc-linux.org>
CC: "David S. Miller" <davem@davemloft.net>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-13 17:09:40 -07:00
Linus Torvalds
33c929c06e Device tree bug fixes to v3.10-rc5
This branch contains the following bug fixes:
 - Fix locking vs. interrupts. Bug caught by lockdep checks
 - Fix parsing of cpp #line directive output by dtc
 - Fix 'make clean' for dtc temporary files.
 
 There is also a commit that regenerates the dtc lexer and parser files
 with Bison 2.5. The only purpose of this commit is to separate the
 functional change in the dtc bug fix from the code generation change
 caused by a different Bison version.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJRuj0xAAoJEEFnBt12D9kBY/AQAInyP7jkTS5NUkfRQcM3cwUj
 xWlb2IZH6WaiT4LM7IU49TaIT+i8Pkwtac67+aXFg7WzteW3c39orn17r3Mbe+HE
 Ay+orFWAJg8sV9oyIcx3d0eHAqyeB+jomzC1NSLJDA36OyOE7EqYmeilDoE3LLlC
 FHjDE5ia+qvBEdURmDBdiBCGO4DSxcCujIYHbY+lFLuXoEXcAmIOnxCAj/Z9wYxj
 tx7vCCcCTFe5G+naK6BxX6FqYM1u8QronkI2NWDiDNjPsXwccYWUDVc92d7xwUZ3
 h/qRCgs2i2MlpLWXPfgXlDxv8V7g0Fvp5v141o2NM+entBxQd2dyADfVcMrmzUi6
 ccVWnKkcyDIX4ANCJIBNnwIjBK7ih37hKRAs5ZThqEU9KZoptT/DtSwMuy7x9sTO
 YY1Fm+fjN71LAyj7VzVKz7gDVmrWSBL613DJrgNqP6brH602kcRt0Sn5vyH/XW2X
 u+rfnpM3aWuMcdvfUNDEZgvIwh1D3qUhNQmm1AqeIGnrfDFY9gJL1k0+44h6Qs4L
 XB+2wXfvxCbpdE15OmwwEsC9UC3HJbFRUwbMw5V5f2GG69S5b+r6Tm3bIG6Q5lC3
 pNMVpkNZ6T5Cj/F0jdNZpp0tjl37N/gcj6MeXn8G3emKYDCfKJWJoh3zz2qYcNW0
 fq1kwEVkr8LK0cj1Z3of
 =om+W
 -----END PGP SIGNATURE-----

Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux

Pull device tree bug fixes from Grant Likely:
 "This branch contains the following bug fixes:
   - Fix locking vs. interrupts. Bug caught by lockdep checks
   - Fix parsing of cpp #line directive output by dtc
   - Fix 'make clean' for dtc temporary files.

  There is also a commit that regenerates the dtc lexer and parser files
  with Bison 2.5.  The only purpose of this commit is to separate the
  functional change in the dtc bug fix from the code generation change
  caused by a different Bison version"

* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
  dtc: ensure #line directives don't consume data from the next line
  dtc: Update generated files to output from Bison 2.5
  of: Fix locking vs. interrupts
  kbuild: make sure we clean up DTB temporary files
2013-06-13 15:32:17 -07:00
Grant Likely
706b78f37f dtc: ensure #line directives don't consume data from the next line
Previously, the #line parsing regex ended with ({WS}+[0-9]+)?. The {WS}
could match line-break characters. If the #line directive did not contain
the optional flags field at the end, this could cause any integer data on
the next line to be consumed as part of the #line directive parsing. This
could cause syntax errors (i.e. #line parsing consuming the leading 0
from a hex literal 0x1234, leaving x1234 to be parsed as cell data,
which is a syntax error), or invalid compilation results (i.e. simply
consuming literal 1234 as part of the #line processing, thus removing it
from the cell data).

Fix this by replacing {WS} with [ \t] so that it can't match line-breaks.

Convert all instances of {WS}, even though the other instances should be
irrelevant for any well-formed #line directive. This is done for
consistency and ultimate safety.

[Cherry picked from DTC commit a1ee6f068e1c8dbc62873645037a353d7852d5cc]

Reported-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-06-13 22:12:15 +01:00
Grant Likely
2a6a08ca5e dtc: Update generated files to output from Bison 2.5
This patch merely updates the generated dtc parser and lexer files to
the output generated by Bison 2.5. The previous versions were generated
from version 2.4.1. The only reason for this commit is to minimize the
diff on the next commit which fixes a bug in the DTC #line directive
parsing. Otherwise the Bison changes would be intermingled with the
functional changes.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-06-13 22:12:14 +01:00
Benjamin Herrenschmidt
d25d86949b of: Fix locking vs. interrupts
The OF code uses irqsafe locks everywhere except in a handful of functions
for no obvious reasons. Since the conversion from the old rwlocks, this
now triggers lockdep warnings when used at interrupt time. At least one
driver (ibmvscsi) seems to be doing that from softirq context.

This converts the few non-irqsafe locks into irqsafe ones, making them
consistent with the rest of the code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-13 22:12:14 +01:00
Ian Campbell
b0a4d8b3cf kbuild: make sure we clean up DTB temporary files
Various temporary files used when building DTB files were not suffixed with
.tmp and therefore were not cleaned up by "make clean".

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-13 22:12:13 +01:00
Linus Torvalds
25e33ed9c7 ACPI fix for 3.10-rc6
- ACPI fix for an issue causing ACPI video driver to attempt to bind
   to devices it shouldn't touch from Rafael J Wysocki.
 
 /
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQIcBAABAgAGBQJRugxCAAoJEKhOf7ml8uNsOhYP/iDqV7Ey0b1omkGhxRdZhtX8
 JsCvELn4sfPzf+JIzsuuS5fStnMNNvDdoFfERoMp4ObtDFPhCUDLkrz6y62MY57J
 VAwqdudhw8HBynn/XZRwGj2q0Z/ZWBZyBNufJIGL+v6d1gYGXV35mSIdiIUWsoKa
 sNQapGAybdgX0oq6DQ9uOu9916qraaugMuLpcst1M7oifwLH97IB1P7FN87+vbsk
 2eDbli++QZcf8FwzbU9Xz3Xwx4rA1T+vSd+da+a1UGczAd/5qLe3LhmFqrmpqOcw
 pGOV6PAGdikAose8iW9Mnxfn5SqaKH0AE8L9SS2Ut5WZf9unHLWA74F+GefUK/Rv
 nHnXIzwK2cVbzkx93udLngoZTXYn1N0GcZB9j2rRH+QxRmLoZJlGoDDKP3cpitZt
 azCxGxHtS2xgi0f9OpyFLtaD8gBP9E8swYfYJIllcb+KySkL8yQEpF7U1z6wNgNZ
 doOQNxzNl8bSkNRp0pZygyd/T7qFYgasZEF67OkuWF8K6T9wlAdTdUpC0bWieT+d
 cZblo7qG+AFbTQYIOjvEzi0Cz9BhBMW2ifihz2xhy3kBemlgepK0tNuGO7OBw3ye
 U+rllXlrM1TUrwGCpvfM8wuJ/xRSzmRS1onzg6iO4NBW4UUzn9Z3bsp/YCY3azSI
 FNKBL3vi6dtN7LaGM0dj
 =1N+6
 -----END PGP SIGNATURE-----

Merge tag 'acpi-3.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "This is an alternative fix for the regression introduced in 3.9 whose
  previous fix had to be reverted right before 3.10-rc5, because it
  broke one of the Tony's machines.

  In this one the check is confined to the ACPI video driver (which is
  the only one causing the problem to happen in the first place) and the
  Tony's box shouldn't even notice it.

   - ACPI fix for an issue causing ACPI video driver to attempt to bind
     to devices it shouldn't touch from Rafael J Wysocki."

* tag 'acpi-3.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / video: Do not bind to device objects with a scan handler
2013-06-13 13:09:50 -07:00
Linus Torvalds
cb03dc094a Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
 "Another set of fixes, the biggest bit of this is yet another tweak to
  the UEFI anti-bricking code; apparently we finally got some feedback
  from Samsung as to what makes at least their systems fail.  This set
  should actually fix the boot regressions that some other systems (e.g.
  SGI) have exhibited.

  Other than that, there is a patch to avoid a panic with particularly
  unhappy memory layouts and two minor protocol fixes which may or may
  not be manifest bugs"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Fix typo in kexec register clearing
  x86, relocs: Move __vvar_page from S_ABS to S_REL
  Modify UEFI anti-bricking code
  x86: Fix adjust_range_size_mask calling position
2013-06-13 13:08:51 -07:00
Linus Torvalds
cb7e9704d5 Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU fixes from Paul McKenney:
 "I must confess that this past merge window was not RCU's best showing.
  This series contains three more fixes for RCU regressions:

   1.   A fix to __DECLARE_TRACE_RCU() that causes it to act as an
        interrupt from idle rather than as a task switch from idle.
        This change is needed due to the recent use of _rcuidle()
        tracepoints that can be invoked from interrupt handlers as well
        as from idle.  Without this fix, invoking _rcuidle() tracepoints
        from interrupt handlers results in splats and (more seriously)
        confusion on RCU's part as to whether a given CPU is idle or not.
        This confusion can in turn result in too-short grace periods and
        therefore random memory corruption.

   2.   A fix to a subtle deadlock that could result due to RCU doing
        a wakeup while holding one of its rcu_node structure's locks.
        Although the probability of occurrence is low, it really
        does happen.  The fix, courtesy of Steven Rostedt, uses
        irq_work_queue() to avoid the deadlock.

   3.   A fix to a silent deadlock (invisible to lockdep) due to the
        interaction of timeouts posted by RCU debug code enabled by
        CONFIG_PROVE_RCU_DELAY=y, grace-period initialization, and CPU
        hotplug operations.  This will not occur in production kernels,
        but really does occur in randconfig testing.  Diagnosis courtesy
        of Steven Rostedt"

* 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  rcu: Fix deadlock with CPU hotplug, RCU GP init, and timer migration
  rcu: Don't call wakeup() with rcu_node structure ->lock held
  trace: Allow idle-safe tracepoints to be called from irq
2013-06-13 12:36:42 -07:00
Linus Torvalds
dcae7f2dfc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Three kvm related memory management fixes, a fix for show_trace, a fix
  for early console output and a patch from Ben to help prevent compile
  errors in regard to irq functions (or our lack thereof)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pci: Implement IRQ functions if !PCI
  s390/sclp: fix new line detection
  s390/pgtable: make pgste lock an explicit barrier
  s390/pgtable: Save pgste during modify_prot_start/commit
  s390/dumpstack: fix address ranges for asynchronous and panic stack
  s390/pgtable: Fix guest overindication for change bit
2013-06-13 11:02:31 -07:00
Linus Torvalds
509768f751 ASoC: Updates for v3.10
As well as the usual driver specifics we've got a couple of core fixes
 here, one fixing capabilities for unidirectional streams and the other
 fixing suspend while audio streams are active.  The suspend fix is a
 little involved but mostly as a result of removing some special casing
 that was doing the wrong thing.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJRtaaSAAoJELSic+t+oim9RZoP/3ILClypxa6EfVBoMq5A8nza
 ZiiMFCH3anma0n/kLQv57fYlBHxI7hj07qZLLWPB/WOauukFJJFaLYtB2gr7Gm7M
 I880qAbpmCMJQC8Nzff7t7LB4l4tgZxzWYpeQU6PvBk6Dr/MfwdPFwdvLBW9uXPK
 OneLWvaomwkldowvymNXzSWWC0dKkhR9ZKNWR3C2kSzOxsGhyUHjFTWartbGAzLj
 74vsOIlOy75P86EawmqZ6Y+dCCCuC8mwTRzf5TrTDsN9ru+QL2DQSzRpVMuF2WmQ
 GSMvwmrWFAQzMoaI2lid2wMs5zV6zJikMp6rE3Bz20RcdDsea9Eu5rYhkIx2XR+G
 yeY0rx1WuhwGkfhG5WE/VuBiXyUFuTvQr91EEH3GftSlrEfw2RMuoa1fvJWNPb1/
 3p80gPRJ09EwN3J3fBA+ezCm0Cvk76lGkc7E4dhQcUcBvzr8vLEASf+xP5JcjZbi
 DXdAi2Dxq8VbJYZGdrPh5FEzNKPJMsScchZIs2mc9dvwAlblG9ibdpm/0XHKnmRk
 xmf8IfrSPdxueujxGx9zrkw/deJuM0tU3ofrhMxxTYaPvdeZpqfCQE/59SC/1h9Y
 1wTdD76+X9ntXywsWdyOL1+ePtpvbVuZItwL08rOUreDlfAFbsjNvG6PXZWqAb07
 hVRcyxtE1We/J3g9uJzt
 =pK3d
 -----END PGP SIGNATURE-----

Merge tag 'asoc-v3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound

Pull ASoC sound updates from Mark Brown:
 "Takashi is travelling at the minute and it'd be good to get the
  MAINTAINERS update in here merged so sending directly.

  As well as the usual driver specifics we've got a couple of core fixes
  here, one fixing capabilities for unidirectional streams and the other
  fixing suspend while audio streams are active.

  The suspend fix is a little involved but mostly as a result of
  removing some special casing that was doing the wrong thing."

* tag 'asoc-v3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound:
  ASoC: tlv320aic3x: Remove deadlock from snd_soc_dapm_put_volsw_aic3x()
  ASoC: dapm: Treat DAI widgets like AIF widgets for power
  ASoC: arizona: Correct AEC loopback enable
  ASoC: pcm: Require both CODEC and CPU support when declaring stream caps
  MAINTAINERS: Remove myself from Wolfson maintainers
  ASoC: wm8994: Ensure microphone detection state is reset on removal
  ASoC: wm8994: Avoid leaking pm_runtime reference on removed jack race
  ASoC: cs42l52: fix hp_gain_enum shift value.
  ASoC: cs42l52: use correct PCM mixer TLV dB scale to match datasheet.
2013-06-13 10:18:33 -07:00
Linus Torvalds
82ea4be61f A few bugfixes for md
Some tagged for -stable.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQIVAwUAUbl1mznsnt1WYoG5AQKGlQ//eixdawF+DUK5hadqZ9EDni+BAVzb7m69
 +zU6ilQ7UOh7bxtAoJqrgFVykK+LG8wvYsEBwMjB9oRDLA96/YDXXiBzXHvd6mGh
 g271lwMTQ9h+O8L6psLUX6qsrH3i7SJmF8ySPKi6Fe5ruT8ToOB8Ii8XQebEZdXo
 VOzRz2VgSTcBdrTyKPDsBJByDQX36hsK8Gs5YSl5F3nvyV4dvGWMlyoTF1TRRt9K
 YCCZ8pSk3kTXaSdl0syrJxI17pEUC8mtcA01S6JD/GV49CGO8LYAckVJ4ijWw7VV
 IGGlH0DsYSMgJ7yyuLz4ifaqRnsWsAGW0WyiZYYKvjtNUiyBuBBbo2cQ1lNkR5p4
 jnLhpJJVh0hLCPn6wcCWIBIdT/mFaBpXkvZPd3ks5kefGXsfpVPm0fK8r0fzkzgy
 tJCZtZFZHeK1qsgaDsiS76S2ZNcFh0HQVIa84Q200/XUDgh8dYlD0+7oIsVu0UBZ
 72Aop+Ak9+k4vKTvB9/hpcY+Rt0MI7zKewXBDSDK1sXhIHLQqv8rCEeNYiuPPqr/
 ghRukn+C/Wtr7JYBsX+jMjxtmSzYtwBOihwLoZCH9pp3C5jTvyQk9s8n1j13V2RK
 sAFtfpCVoQ8tTa7IITKRMfftzHn1WiPlPsj6VbigJ6A4N98csgv7x2rF7FyqcF0X
 aoj69nQ3i/4=
 =8iy3
 -----END PGP SIGNATURE-----

Merge tag 'md-3.10-fixes' of git://neil.brown.name/md

Pull md bugfixes from Neil Brown:
 "A few bugfixes for md

  Some tagged for -stable"

* tag 'md-3.10-fixes' of git://neil.brown.name/md:
  md/raid1,5,10: Disable WRITE SAME until a recovery strategy is in place
  md/raid1,raid10: use freeze_array in place of raise_barrier in various places.
  md/raid1: consider WRITE as successful only if at least one non-Faulty and non-rebuilding drive completed it.
  md: md_stop_writes() should always freeze recovery.
2013-06-13 10:13:29 -07:00
Josh Triplett
b844db3187 turbostat: Increase output buffer size to accommodate C8-C10
On platforms with C8-C10 support, the additional C-states cause
turbostat to overrun its output buffer of 128 bytes per CPU.  Increase
this to 256 bytes per CPU.

[ As a bugfix, this should go into 3.10; however, since the C8-C10
  support didn't go in until after 3.9, this need not go into any stable
  kernel. ]

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-06-13 09:55:56 -07:00
H. Peter Anvin
45df901cc8 * More tweaking to the EFI variable anti-bricking algorithm. Quite a
few users were reporting boot regressions in v3.9. This has now been
    fixed with a more accurate "minimum storage requirement to avoid
    bricking" value from Samsung (5K instead of 50%) and code to trigger
    garbage collection when we near our limit - Matthew Garrett.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.13 (GNU/Linux)
 
 iQIcBAABAgAGBQJRtkY2AAoJEC84WcCNIz1VJOsP/00xwiY4VKh2RfqNkYKSl/w5
 gEshIHFEAXHX5X8C4ReocZVywvdjTgbJoKBbBy3FePYRzLddrmavvjen17hk7BzS
 /cO8/eXForkNWCGR1kLagA6HLpgKP5DPayKizoMb4Mg6muzfT1SCcN6Pzh8cDMWe
 btcq/l9JZejXdJ4Wfoq1My+WdXs19OT/BNeD3y65K4x29vNUjop6oaIdDJWLlH/S
 aeLHh8d4xbSHNWzK1fBP7CnFTYU27xxs1BFNAReU6McxeQCYZAIaRovYnjTZEvfJ
 twd2tLrOn9HBVTbWa8T4XGNSr+QcT4XGMadLvdwuqltmKDfH6Onm8aWQM3IqA7gy
 Qimbcv2B7HrITgXWTzp3DPkXF1LA8/8QHSBXVMUU9Rl6QOLy18vIdKiQy3M1Ng9Z
 0q+Ow93JtnL11zf9wLDMdKaKcA9HOxbG/wRTK6XO4vGaWj9brFv3n5Ib7OreHH6D
 GP58zDEnThFuj97K/NKREBZZFcFOMZpKk5MAipVkzltihUQmNeTF/dAtBJ3Ncu/A
 PqQE6uuKVXjASJR8Gy0bI3WHtSTZK4L/sg9c2MF3bdJa9BswN+m8IEbls+S+iFOx
 +sYPQx7Zw6SFENxDw8cDYNzC14yfr60qyOxTWfkHH7l/FnvhOgwHzqPsLcXx0ouR
 C6k1yPYSTgiqFdWC2sjn
 =TZuM
 -----END PGP SIGNATURE-----

Merge tag 'efi-urgent' into x86/urgent

 * More tweaking to the EFI variable anti-bricking algorithm. Quite a
   few users were reporting boot regressions in v3.9. This has now been
   fixed with a more accurate "minimum storage requirement to avoid
   bricking" value from Samsung (5K instead of 50%) and code to trigger
   garbage collection when we near our limit - Matthew Garrett.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-06-13 08:59:23 -07:00
Josh Durgin
3a96d5cd7b rbd: use the correct length for format 2 object names
Format 2 objects use 16 characters for the object name suffix to be
able to express the full 64-bit range of object numbers. Format 1
images only use 12 characters for this. Using 12-character names for
format 2 caused userspace and kernel rbd clients to read differently
named objects, which made an image written by one client look empty to
the other client.

CC: stable@vger.kernel.org  # 3.9+
Reported-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
2013-06-13 08:46:15 -07:00
Yoshihiro Shimoda
dd01989735 net: sh_eth: fix incorrect RX length error if R8A7740
This patch fixes an issue that the driver increments the "RX length error"
on every buffer in sh_eth_rx() if the R8A7740.
This patch also adds a description about the Receive Frame Status bits.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-13 03:02:32 -07:00
Eric Dumazet
d3b6f61418 ip_tunnel: remove __net_init/exit from exported functions
If CONFIG_NET_NS is not set then __net_init is the same as __init and
__net_exit is the same as __exit. These functions will be removed from
memory after the module loads or is removed. Functions that are exported
for use by other functions should never be labeled for removal.

Bug introduced by commit c544193214
("GRE: Refactor GRE tunneling code.")

Reported-by: Steinar H. Gunderson <sgunderson@bigfoot.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-13 03:00:59 -07:00