7 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Linus Torvalds [Wed, 17 Apr 2013 23:12:43 +0000]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux

Pull idle patches from Len Brown:
 "A pair of small patches for 3.9-rc7.

  This CPU-id should have been included in the ones that we updated
  earlier in 3.9.  This pair of patches will allow this flavor of
  Haswell to behave like the other flavors."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: additional Haswell CPU-id
  intel_idle: additional Haswell CPU-id

7 years agoMerge branch 'akpm' (fixes from Andrew)
Linus Torvalds [Wed, 17 Apr 2013 23:11:09 +0000]
Merge branch 'akpm' (fixes from Andrew)

Pull misc fixes from Andrew Morton:
 "Ten fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  kernel/signal.c: stop info leak via the tkill and the tgkill syscalls
  mm/vmscan: fix error return in kswapd_run()
  hfsplus: fix potential overflow in hfsplus_file_truncate()
  avr32: fix build error in atstk1006_defconfig
  hugetlbfs: add swap entry check in follow_hugetlb_page()
  fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
  hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)
  checkpatch: fix stringification macro defect
  drivers/video/mmp/core.c: fix use-after-free bug
  thinkpad-acpi: kill hotkey_thread_mutex

7 years agokernel/signal.c: stop info leak via the tkill and the tgkill syscalls
Emese Revfy [Wed, 17 Apr 2013 22:58:36 +0000]
kernel/signal.c: stop info leak via the tkill and the tgkill syscalls

This fixes a kernel memory contents leak via the tkill and tgkill syscalls
for compat processes.

This is visible in the siginfo_t->_sifields._rt.si_sigval.sival_ptr field
when handling signals delivered from tkill.

The place of the infoleak:

int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
        put_user_ex(ptr_to_compat(from->si_ptr), &to->si_ptr);

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Reviewed-by: PaX Team <pageexec@freemail.hu>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agomm/vmscan: fix error return in kswapd_run()
Xishi Qiu [Wed, 17 Apr 2013 22:58:34 +0000]
mm/vmscan: fix error return in kswapd_run()

Fix the error return value in kswapd_run().  The bug was introduced by
commit d5dc0ad928fb ("mm/vmscan: fix error number for failed kthread").

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agohfsplus: fix potential overflow in hfsplus_file_truncate()
Vyacheslav Dubeyko [Wed, 17 Apr 2013 22:58:33 +0000]
hfsplus: fix potential overflow in hfsplus_file_truncate()

Change a u32 to loff_t hfsplus_file_truncate().

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoavr32: fix build error in atstk1006_defconfig
Josh Wu [Wed, 17 Apr 2013 22:58:31 +0000]
avr32: fix build error in atstk1006_defconfig

fixed the following compile error when use avr32 atstk1006_defconfig:

  drivers/mtd/nand/atmel_nand.c: In function 'pmecc_err_location':
  drivers/mtd/nand/atmel_nand.c:639: error: implicit declaration of function 'writel_relaxed'

which was introduced by commit 1c7b874d33b4 ("mtd: at91: atmel_nand: add
Programmable Multibit ECC controller support").  The PMECC for nand
flash code uses writel_relaxed().  But in avr32, there is no macro
"writel_relaxed" defined.

This patch add writex_relaxed macro definitions.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Havard Skinnemoen <havard@skinnemoen.net>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agohugetlbfs: add swap entry check in follow_hugetlb_page()
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:30 +0000]
hugetlbfs: add swap entry check in follow_hugetlb_page()

With applying the previous patch "hugetlbfs: stop setting VM_DONTDUMP in
initializing vma(VM_HUGETLB)" to reenable hugepage coredump, if a memory
error happens on a hugepage and the affected processes try to access the
error hugepage, we hit VM_BUG_ON(atomic_read(&page->_count) <= 0) in

The reason for this bug is that coredump-related code doesn't recognise
"hugepage hwpoison entry" with which a pmd entry is replaced when a memory
error occurs on a hugepage.

In other words, physical address information is stored in different bit
layout between hugepage hwpoison entry and pmd entry, so
follow_hugetlb_page() which is called in get_dump_page() returns a wrong
page from a given address.

The expected behavior is like this:

  absent   is_swap_pte   FOLL_DUMP   Expected behavior
   true     false         false       hugetlb_fault
   false    true          false       hugetlb_fault
   false    false         false       return page
   true     false         true        skip page (to avoid allocation)
   false    true          true        hugetlb_fault
   false    false         true        return page

With this patch, we can call hugetlb_fault() and take proper actions (we
wait for migration entries, fail with VM_FAULT_HWPOISON_LARGE for
hwpoisoned entries,) and as the result we can dump all hugepages except
for hwpoisoned ones.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [2.6.34+?]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agofs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:28 +0000]
fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()

Documentation/filesystems/proc.txt says about coredump_filter bitmask,

  Note bit 0-4 doesn't effect any hugetlb memory. hugetlb memory are only
  effected by bit 5-6.

However current code can go into the subsequent flag checks of bit 0-4
for vma(VM_HUGETLB). So this patch inserts 'return' and makes it work
as written in the document.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agohugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:27 +0000]
hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)

Currently we fail to include any data on hugepages into coredump,
because VM_DONTDUMP is set on hugetlbfs's vma.  This behavior was
recently introduced by commit 314e51b9851b ("mm: kill vma flag
VM_RESERVED and mm->reserved_vm counter").

This looks to me a serious regression, so let's fix it.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agocheckpatch: fix stringification macro defect
Joe Perches [Wed, 17 Apr 2013 22:58:26 +0000]
checkpatch: fix stringification macro defect

Fix checkpatch misreporting defect with stringification macros

ERROR: Macros with complex values should be enclosed in parenthesis
  #27: FILE: arch/arm/include/asm/kgdb.h:41:
  +#define ___to_string(X) #X

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Vincent Stehlé <v-stehle@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agodrivers/video/mmp/core.c: fix use-after-free bug
Andrei Epure [Wed, 17 Apr 2013 22:58:24 +0000]
drivers/video/mmp/core.c: fix use-after-free bug

Found with coccinelle.

Signed-off-by: Andrei Epure <epure.andrei@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agothinkpad-acpi: kill hotkey_thread_mutex
Oleg Nesterov [Wed, 17 Apr 2013 22:58:23 +0000]
thinkpad-acpi: kill hotkey_thread_mutex

hotkey_kthread() does try_to_freeze() under hotkey_thread_mutex.

We can simply kill this mutex, hotkey_poll_stop_sync() does not need to
serialize with hotkey_kthread().  When kthread_stop() returns the thread
is already dead, it called do_exit()->complete_vfork_done().

Reported-by: Artem Savkov <artem.savkov@gmail.com>
Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>
Cc: Aaron Lu <aaron.lu@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Wed, 17 Apr 2013 19:52:02 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

Pull Ceph fix from Sage Weil:
 "It's a simple fix for a hard to hit race, but low-risk and clearly

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: do a safe list traversal in rbd_img_request_submit()

7 years agoARM: KVM: fix unbalanced get_cpu() in access_dcsw
Marc Zyngier [Wed, 17 Apr 2013 19:09:09 +0000]
ARM: KVM: fix unbalanced get_cpu() in access_dcsw

In the very unlikely event where a guest would be foolish enough to
*read* from a write-only cache maintainance register, we end up
with preemption disabled, due to a misplaced get_cpu().

Just move the "is_write" test outside of the critical section.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agorbd: do a safe list traversal in rbd_img_request_submit()
Alex Elder [Wed, 10 Apr 2013 22:47:46 +0000]
rbd: do a safe list traversal in rbd_img_request_submit()

It's possible that the reference to the object request dropped
inside the loop in rbd_img_request_submit() will be the last
one, in which case the content of the object pointer can't be

Use a safe form of the object request list traversal to avoid

This resolves:

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 17 Apr 2013 15:50:59 +0000]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix erroneous netfilter drop of SIP packets generated by some Cisco
    phones, from Patrick McHardy.

 2) Fix netfilter IPSET refcounting in list_set_add(), from Jozsef

 3) Fix TCP syncookies route lookup key, we don't use the same values we
    would use for the usual SYN receive processing, from Dmitry Popov.

 4) Fix NULL deref in bond_slave_netdev_event(), from Nikolay

 5) When bonding enslave fails, we can forget to clear the IFF_BONDING
    bit, fix also from Nikolay Aleksandrov.

 6) skb->csum_start is 16-bits, which is almost always just fine.  But
    if we reallocate the headroom of an SKB this can push the
    skb->csum_start value outside of it's valid range.  This can easily
    happen when collapsing multiple SKBs from the retransmit queue

    Fix from Thomas Graf.

 7) Fix NULL deref in be2net driver due to missing check of
    __vlan_put_tag() return value, from Ivan Vecera.

 8) tun_set_iff() returns zero instead of error code on failure, fix
    from Wei Yongjun.

 9) Like GARP, 802 MRP needs to hold the app->lock when adding MAD
    events and queueing PDUs.  Fix from David Ward.

10) Build fix, MVMDIO needs PHYLIB, from Thomas Petazzoni..

11) Fix mac80211 static with ipv6 modular build, from Cong Wang.

12) If userland specifies a path cost explicitly, do not override it
    when the carrier state changes.  From Stephen Hemminger.

13) mvnets calculates the TX queue to use incorrectly resulting in
    garbage pointer derefs and crashes, fix from Willy Tarreau.

14) cdc_mbim does erroneous sizeof(ETH_HLEN).  Fix from Bjorn Mork.

15) IP fragmentation can leak a refcount-less route out from an RCU
    protected section.  This results in crashes and all sorts of hard to
    diagnose behavior.  Fix from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (24 commits)
  qlcnic: fix beaconing test for 82xx adapter
  net: drop dst before queueing fragments
  net: fec: fix regression in link change accounting
  net: cdc_mbim: remove bogus sizeof()
  drivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node
  net: mvneta: fix improper tx queue usage in mvneta_tx()
  esp4: fix error return code in esp_output()
  bridge: make user modified path cost sticky
  ipv6: statically link register_inet6addr_notifier()
  net: mvmdio: add select PHYLIB
  net/802/mrp: fix possible race condition when calling mrp_pdu_queue()
  tuntap: fix error return code in tun_set_iff()
  be2net: take care of __vlan_put_tag return value
  can: sja1000: fix handling on dt properties on little endian systems
  can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq
  netfilter: nf_nat: fix race when unloading protocol modules
  tcp: Reallocate headroom if it would overflow csum_start
  stmmac: prevent interrupt loop with MMC RX IPC Counter
  bonding: IFF_BONDING is not stripped on enslave failure
  bonding: fix netdev event NULL pointer dereference

7 years agos390: move dummy io_remap_pfn_range() to asm/pgtable.h
Linus Torvalds [Wed, 17 Apr 2013 15:46:19 +0000]
s390: move dummy io_remap_pfn_range() to asm/pgtable.h

Commit b4cbb197c7e7 ("vm: add vm_iomap_memory() helper function") added
a helper function wrapper around io_remap_pfn_range(), and every other
architecture defined it in <asm/pgtable.h>.

The s390 choice of <asm/io.h> may make sense, but is not very convenient
for this case, and gratuitous differences like that cause unexpected errors like this:

   mm/memory.c: In function 'vm_iomap_memory':
   mm/memory.c:2439:2: error: implicit declaration of function 'io_remap_pfn_range' [-Werror=implicit-function-declaration]

Glory be the kbuild test robot who noticed this, bisected it, and
reported it to the guilty parties (ie me).

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoqlcnic: fix beaconing test for 82xx adapter
Himanshu Madhani [Tue, 16 Apr 2013 18:11:10 +0000]
qlcnic: fix beaconing test for 82xx adapter

o Commit 319ecf121e1da3d75dd1bde32fed255532e61797
  ("qlcnic: 83xx sysfs routines") introduced regression
  for beaconing test while refactoring 82xx code. This patch is to
  revert code to fix beaconing test for 82xx adapter.

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agonet: drop dst before queueing fragments
Eric Dumazet [Tue, 16 Apr 2013 12:55:41 +0000]
net: drop dst before queueing fragments

Commit 4a94445c9a5c (net: Use ip_route_input_noref() in input path)
added a bug in IP defragmentation handling, as non refcounted
dst could escape an RCU protected section.

Commit 64f3b9e203bd068 (net: ip_expire() must revalidate route) fixed
the case of timeouts, but not the general problem.

Tom Parkin noticed crashes in UDP stack and provided a patch,
but further analysis permitted us to pinpoint the root cause.

Before queueing a packet into a frag list, we must drop its dst,
as this dst has limited lifetime (RCU protected)

When/if a packet is finally reassembled, we use the dst of the very
last skb, still protected by RCU and valid, as the dst of the
reassembled packet.

Use same logic in IPv6, as there is no need to hold dst references.

Reported-by: Tom Parkin <tparkin@katalix.com>
Tested-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Wed, 17 Apr 2013 02:49:03 +0000]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fix from Russell King:
 "A build fix for an incomplete change to the ARM cpu suspend code"

* branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: Do 15e0d9e37c (ARM: pm: let platforms select cpu_suspend support) properly

7 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 17 Apr 2013 02:46:14 +0000]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Marcelo Tosatti:
 "PPC and ARM KVM fixes"

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write
  kvm/ppc/e500: eliminate tlb_refs
  kvm/ppc/e500: g2h_tlb1_map: clear old bit before setting new bit
  kvm/ppc/e500: h2g_tlb1_rmap: esel 0 is valid
  kvm/powerpc/e500mc: fix tlb invalidation on cpu migration

7 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes
Linus Torvalds [Wed, 17 Apr 2013 02:45:15 +0000]
Merge tag 'for-linus' of git://git./linux/kernel/git/sfr/next-fixes

Pull powerpc fixes from Stephen Rothwell:
 "Three regresions in the PowerPC code.  One from v3.7 the others from
  this merge window."

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes:
  powerpc: add a missing label in resume_kernel
  powerpc: Fix audit crash due to save/restore PPR changes

7 years agoMerge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Wed, 17 Apr 2013 02:44:10 +0000]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild

Pull kbuild fix from Michal Marek:
 "Fix for a missing dependency when generating scripts/mod/devicetable-offsets.h.
  This dependency got introduced in v3.9-rc1."

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: generate generic headers before recursing into scripts

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Wed, 17 Apr 2013 02:43:30 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "Two small fixups to the Wacom driver"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - correct reported resolution for Intuos4 Wireless
  Input: wacom - fix "can not retrieve extra class descriptor" for 24HDT

7 years agoMerge branch 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm
Marcelo Tosatti [Tue, 16 Apr 2013 23:49:47 +0000]
Merge branch 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm

* 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm:
  ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

7 years agovm: add vm_iomap_memory() helper function
Linus Torvalds [Tue, 16 Apr 2013 20:45:37 +0000]
vm: add vm_iomap_memory() helper function

Various drivers end up replicating the code to mmap() their memory
buffers into user space, and our core memory remapping function may be
very flexible but it is unnecessarily complicated for the common cases
to use.

Our internal VM uses pfn's ("page frame numbers") which simplifies
things for the VM, and allows us to pass physical addresses around in a
denser and more efficient format than passing a "phys_addr_t" around,
and having to shift it up and down by the page size.  But it just means
that drivers end up doing that shifting instead at the interface level.

It also means that drivers end up mucking around with internal VM things
like the vma details (vm_pgoff, vm_start/end) way more than they really
need to.

So this just exports a function to map a certain physical memory range
into user space (using a phys_addr_t based interface that is much more
natural for a driver) and hides all the complexity from the driver.
Some drivers will still end up tweaking the vm_page_prot details for
things like prefetching or cacheability etc, but that's actually
relevant to the driver, rather than caring about what the page offset of
the mapping is into the particular IO memory region.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write
Marc Zyngier [Fri, 12 Apr 2013 13:00:16 +0000]
ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write

Looks like our L_PTE_S2_RDWR definition is slightly wrong,
and is actually write only (see ARM ARM Table B3-9, Stage 2 control
of access permissions). Didn't make a difference for normal pages,
as we OR the flags together, but I'm still wondering how it worked
for Stage-2 mapped devices, such as the GIC.

Brown paper bag time, again.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>

7 years agoARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting
Marc Zyngier [Wed, 3 Apr 2013 09:43:13 +0000]

Commit 3401d54696f9 (KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR
ioctl) added support for the KVM_CAP_ARM_SET_DEVICE_ADDR capability,
but failed to add a break in the relevant case statement, returning
the number of CPUs instead.

Luckilly enough, the CONFIG_NR_CPUS=0 patch hasn't been merged yet
(https://lkml.org/lkml/diff/2012/3/31/131/1), so the bug wasn't

Just give it a break!

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>

7 years agonet: fec: fix regression in link change accounting
Lucas Stach [Tue, 16 Apr 2013 00:42:42 +0000]
net: fec: fix regression in link change accounting

A link-down isn't properly saved in the FEC state, so we wouldn't restart the
FEC after a repeated link-up.

Regression was introduced with commit
d97e7497 "net: fec: restart the FEC when PHY speed changes"

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agonet: cdc_mbim: remove bogus sizeof()
Bjørn Mork [Tue, 16 Apr 2013 00:17:07 +0000]
net: cdc_mbim: remove bogus sizeof()

The intention was to test against the constant, not the size of
the constant.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agodrivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node
Mugunthan V N [Mon, 15 Apr 2013 07:31:28 +0000]
drivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node

Dual EMAC slave VLAN id must be got from slave node instead of cpsw node as
VLAN id for each slave will be different.

Reported-by: Mark Jackson <mpfj-list@mimc.co.uk>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agonet: mvneta: fix improper tx queue usage in mvneta_tx()
Willy Tarreau [Thu, 11 Apr 2013 21:00:37 +0000]
net: mvneta: fix improper tx queue usage in mvneta_tx()

mvneta_tx() was using a static tx queue number causing crashes as
soon as a little bit of traffic was sent via the interface, because
it is normally expected that the same queue should be used as in

As suggested by Ben Hutchings, let's use skb_get_queue_mapping() to
get the proper Tx queue number, and use alloc_etherdev_mqs() instead
of alloc_etherdev_mq() to create the queues.

Both my Mirabox and my OpenBlocks AX3 used to crash without this patch
and don't anymore with it. The issue appeared in 3.8 but became more
visible after the fix allowing GSO to be enabled.

Original work was done by Dmitri Epshtein and Thomas Petazzoni. I
just adapted it to take care of Ben's comments.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Cc: Dmitri Epshtein <dima@marvell.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoesp4: fix error return code in esp_output()
Wei Yongjun [Sat, 13 Apr 2013 15:49:03 +0000]
esp4: fix error return code in esp_output()

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobridge: make user modified path cost sticky
stephen hemminger [Sat, 13 Apr 2013 14:06:07 +0000]
bridge: make user modified path cost sticky

Keep a STP port path cost value if it was set by a user.
Don't replace it with the link-speed based path cost
whenever the link goes down and comes back up.

Reported-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoInput: wacom - correct reported resolution for Intuos4 Wireless
Jason Gerecke [Mon, 15 Apr 2013 16:10:34 +0000]
Input: wacom - correct reported resolution for Intuos4 Wireless

Reported-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

7 years agoMerge branches 'timers-urgent-for-linus', 'irq-urgent-for-linus' and 'core-urgent...
Linus Torvalds [Mon, 15 Apr 2013 14:03:01 +0000]
Merge branches 'timers-urgent-for-linus', 'irq-urgent-for-linus' and 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull {timer,irq,core} fixes from Thomas Gleixner:

 - timer: bug fix for a cpu hotplug race.

 - irq: single bugfix for a wrong return value, which prevents the
   calling function to invoke the software fallback.

 - core: bugfix which plugs two race confitions which can cause hotplug
   per cpu threads to end up on the wrong cpu.

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  hrtimer: Don't reinitialize a cpu_base lock on CPU_UP

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: gic: fix irq_trigger return

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kthread: Prevent unpark race which puts threads on the wrong cpu

7 years agopowerpc: add a missing label in resume_kernel
Kevin Hao [Tue, 9 Apr 2013 22:31:24 +0000]
powerpc: add a missing label in resume_kernel

A label 0 was missed in the patch a9c4e541 (powerpc/kprobe: Complete
kprobe and migrate exception frame). This will cause the kernel
branch to an undetermined address if there really has a conflict when
updating the thread flags.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Cc: stable@vger.kernel.org
Acked-By: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

7 years agopowerpc: Fix audit crash due to save/restore PPR changes
Alistair Popple [Mon, 15 Apr 2013 01:44:14 +0000]
powerpc: Fix audit crash due to save/restore PPR changes

The current mainline crashes when hitting userspace with the following:

kernel BUG at kernel/auditsc.c:1769!
cpu 0x1: Vector: 700 (Program Check) at [c000000023883a60]
    pc: c0000000001047a8: .__audit_syscall_entry+0x38/0x130
    lr: c00000000000ed64: .do_syscall_trace_enter+0xc4/0x270
    sp: c000000023883ce0
   msr: 8000000000029032
  current = 0xc000000023800000
  paca    = 0xc00000000f080380   softe: 0        irq_happened: 0x01
    pid   = 1629, comm = start_udev
kernel BUG at kernel/auditsc.c:1769!
enter ? for help
[c000000023883d80] c00000000000ed64 .do_syscall_trace_enter+0xc4/0x270
[c000000023883e30] c000000000009b08 syscall_dotrace+0xc/0x38
 --- Exception: c00 (System Call) at 0000008010ec50dc

Bisecting found the following patch caused it:

commit 44e9309f1f357794b7ae93d5f3e3e6f11d2b8a7f
Author: Haren Myneni <haren@linux.vnet.ibm.com>
powerpc: Implement PPR save/restore

It was found this patch corrupted r9 when calling

Using r10 as a scratch register instead of r9 solved the problem.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

7 years agoLinux 3.9-rc7
Linus Torvalds [Mon, 15 Apr 2013 00:45:16 +0000]
Linux 3.9-rc7

7 years agoipv6: statically link register_inet6addr_notifier()
Cong Wang [Sun, 14 Apr 2013 15:18:43 +0000]
ipv6: statically link register_inet6addr_notifier()

Tomas reported the following build error:

net/built-in.o: In function `ieee80211_unregister_hw':
(.text+0x10f0e1): undefined reference to `unregister_inet6addr_notifier'
net/built-in.o: In function `ieee80211_register_hw':
(.text+0x10f610): undefined reference to `register_inet6addr_notifier'
make: *** [vmlinux] Error 1

when built IPv6 as a module.

So we have to statically link these symbols.

Reported-by: Tomas Melin <tomas.melin@iki.fi>
Cc: Tomas Melin <tomas.melin@iki.fi>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: YOSHIFUJI Hidaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:13:24 +0000]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
  x86/mm/cpa/selftest: Fix false positive in CPA self test
  x86/mm/cpa: Convert noop to functional fix
  x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
  x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates

7 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:12:17 +0000]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixlets"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/cputime: Fix accounting on multi-threaded processes
  sched/debug: Fix sd->*_idx limit range avoiding overflow
  sched_clock: Prevent 64bit inatomicity on 32bit systems
  sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s

7 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:10:44 +0000]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixlets"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix error return code
  ftrace: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, always make sure it's NUL terminated
  perf: Fix ring_buffer perf_output_space() boundary calculation
  perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer()

7 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sun, 14 Apr 2013 17:55:20 +0000]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "One fix for a hotplug locking regressions, and one fix for an oops if
  you unplug the monitor at an inopportune moment on the udl device."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
  udl: handle EDID failure properly.

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Linus Torvalds [Sun, 14 Apr 2013 17:54:40 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu

Pull m68knommu fix from Greg Ungerer:
 "This contains only a single compilation fix for ColdFire m68k targets
  that use local non-GPIOLIB support."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: define a local gpio_request_one() function

7 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sun, 14 Apr 2013 17:53:54 +0000]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fix from Wim Van Sebroeck:
 "It will fix compile errors for the at91rm9200_wdt driver"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: Revert the AT91RM9200_WATCHDOG dependency

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 14 Apr 2013 17:52:54 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull one more btrfs fix from Chris Mason:
 "This has a recent fix from Josef for our tree log replay code.  It
  fixes problems where the inode counter for the number of bytes in the
  file wasn't getting updated properly during fsync replay.

  The commit did get rebased this morning, but it was only to clean up
  the subject line.  The code hasn't changed."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: make sure nbytes are right after log replay

7 years agoMerge tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 14 Apr 2013 17:50:55 +0000]
Merge tag 'trace-fixes-v3.9-rc-v3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull ftrace fixes from Steven Rostedt:
 "Namhyung Kim found and fixed a bug that can crash the kernel by simply
  doing: echo 1234 | tee -a /sys/kernel/debug/tracing/set_ftrace_pid

  Luckily, this can only be done by root, but still is a nasty bug."

* tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
  tracing: Fix possible NULL pointer dereferences

7 years agoAdd file_ns_capable() helper function for open-time capability checking
Linus Torvalds [Sun, 14 Apr 2013 17:06:31 +0000]
Add file_ns_capable() helper function for open-time capability checking

Nothing is using it yet, but this will allow us to delay the open-time
checks to use time, without breaking the normal UNIX permission
semantics where permissions are determined by the opener (and the file
descriptor can then be passed to a different process, or the process can
drop capabilities).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agowatchdog: Revert the AT91RM9200_WATCHDOG dependency
Nicolas Ferre [Wed, 10 Apr 2013 12:36:22 +0000]
watchdog: Revert the AT91RM9200_WATCHDOG dependency

Compiling the at91rm9200_wdt.c driver without at91rm9200
support was leading to several errors:

drivers/built-in.o: In function `at91_wdt_close':
at91_adc.c:(.text+0xc9fe4): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_write':
at91_adc.c:(.text+0xca004): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_shutdown':
at91_adc.c:(.text+0xca01c): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_suspend':
at91_adc.c:(.text+0xca038): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_open':
at91_adc.c:(.text+0xca0cc): undefined reference to `at91_st_base'
drivers/built-in.o:at91_adc.c:(.text+0xca2c8): more undefined references to
`at91_st_base' follow

So, reverting the modification of the "depends" Kconfig line
introduced by patch a6a1bcd37 (watchdog: at91rm9200: add DT support)
seems to be the good solution.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

7 years agovfs: Revert spurious fix to spinning prevention in prune_icache_sb
Suleiman Souhlal [Sat, 13 Apr 2013 23:03:06 +0000]
vfs: Revert spurious fix to spinning prevention in prune_icache_sb

Revert commit 62a3ddef6181 ("vfs: fix spinning prevention in prune_icache_sb").

This commit doesn't look right: since we are looking at the tail of the
list (sb->s_inode_lru.prev) if we want to skip an inode, we should put
it back at the head of the list instead of the tail, otherwise we will
keep spinning on it.

Discovered when investigating why prune_icache_sb came top in perf
reports of a swapping load.

Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agokobject: fix kset_find_obj() race with concurrent last kobject_put()
Linus Torvalds [Sat, 13 Apr 2013 22:15:30 +0000]
kobject: fix kset_find_obj() race with concurrent last kobject_put()

Anatol Pomozov identified a race condition that hits module unloading
and re-loading.  To quote Anatol:

 "This is a race codition that exists between kset_find_obj() and
  kobject_put().  kset_find_obj() might return kobject that has refcount
  equal to 0 if this kobject is freeing by kobject_put() in other

  Here is timeline for the crash in case if kset_find_obj() searches for
  an object tht nobody holds and other thread is doing kobject_put() on
  the same kobject:

    THREAD A (calls kset_find_obj())     THREAD B (calls kobject_put())
                                         atomic_dec_return(kobj->kref), counter gets zero here
                                         ... starts kobject cleanup ....
                                         spin_lock() // WAIT thread A in kobj_kset_leave()
    iterate over kset->list
    atomic_inc(kobj->kref) (counter becomes 1)
                                         spin_lock() // taken
                                         // it does not know that thread A increased counter so it
                                         remove obj from list
                                         vfree(module) // frees module object with containing kobj

    // kobj points to freed memory area!!
    kobject_put(kobj) // OOPS!!!!

  The race above happens because module.c tries to use kset_find_obj()
  when somebody unloads module.  The module.c code was introduced in
  commit 6494a93d55fa"

Anatol supplied a patch specific for module.c that worked around the
problem by simply not using kset_find_obj() at all, but rather than make
a local band-aid, this just fixes kset_find_obj() to be thread-safe
using the proper model of refusing the get a new reference if the
refcount has already dropped to zero.

See examples of this proper refcount handling not only in the kref
documentation, but in various other equivalent uses of this pattern by
grepping for atomic_inc_not_zero().

[ Side note: the module race does indicate that module loading and
  unloading is not properly serialized wrt sysfs information using the
  module mutex.  That may require further thought, but this is the
  correct fix at the kobject layer regardless. ]

Reported-analyzed-and-tested-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agonet: mvmdio: add select PHYLIB
Thomas Petazzoni [Sat, 13 Apr 2013 06:18:56 +0000]
net: mvmdio: add select PHYLIB

The mvmdio driver uses the phylib API, so it should select the PHYLIB
symbol, otherwise, a build with mvmdio (but without mvneta) fails to
build with undefined symbols such as mdiobus_unregister, mdiobus_free,

The mvneta driver does not use the phylib API directly, so it does not
need to select PHYLIB. It already selects the mvmdio driver anyway.

Historically, this problem is due to the fact that the PHY handling
was originally part of mvneta, and was later moved to a separate
driver, without updating the Kconfig select statements
accordingly. And since there was no functional reason to use mvmdio
without mvneta, this case was not tested.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoBtrfs: make sure nbytes are right after log replay
Josef Bacik [Fri, 5 Apr 2013 20:50:09 +0000]
Btrfs: make sure nbytes are right after log replay

While trying to track down a tree log replay bug I noticed that fsck was always
complaining about nbytes not being right for our fsynced file.  That is because
the new fsync stuff doesn't wait for ordered extents to complete, so the inodes
nbytes are not necessarily updated properly when we log it.  So to fix this we
need to set nbytes to whatever it is on the inode that is on disk, so when we
replay the extents we can just add the bytes that are being added as we replay
the extent.  This makes it work for the case that we have the wrong nbytes or
the case that we logged everything and nbytes is actually correct.  With this
I'm no longer getting nbytes errors out of btrfsck.

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

7 years agox86-32: Fix possible incomplete TLB invalidate with PAE pagetables
Dave Hansen [Fri, 12 Apr 2013 23:23:54 +0000]
x86-32: Fix possible incomplete TLB invalidate with PAE pagetables

This patch attempts to fix:


The symptom is a crash and messages like this:

chrome: Corrupted page table at address 34a03000
*pdpt = 0000000000000000 *pde = 0000000000000000
Bad pagetable: 000f [#1] PREEMPT SMP

Ingo guesses this got introduced by commit 611ae8e3f520 ("x86/tlb:
enable tlb flush range support for x86") since that code started to free
unused pagetables.

On x86-32 PAE kernels, that new code has the potential to free an entire
PMD page and will clear one of the four page-directory-pointer-table
(aka pgd_t entries).

The hardware aggressively "caches" these top-level entries and invlpg
does not actually affect the CPU's copy.  If we clear one we *HAVE* to
do a full TLB flush, otherwise we might continue using a freed pmd page.
(note, we do this properly on the population side in pud_populate()).

This patch tracks whenever we clear one of these entries in the 'struct
mmu_gather', and ensures that we follow up with a full tlb flush.

BTW, I disassembled and checked that:

if (tlb->fullmm == 0)
if (!tlb->fullmm && !tlb->need_flush_all)

generate essentially the same code, so there should be zero impact there
to the !PAE case.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Artem S Tashkinov <t.artem@mailcity.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Fri, 12 Apr 2013 22:26:42 +0000]
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are remaining target-pending items for v3.9-rc7 code.

  The tcm_vhost patches are more than I'd usually include in a -rc7
  pull, but are changes required for v3.9 to work correctly with the
  pending vhost-scsi-pci QEMU upstream series merge.  (Paolo CC'ed)

  Plus Asias's conversion to use vhost_virtqueue->private_data + RCU for
  managing vhost-scsi endpoints has gotten alot of review + testing over
  the past weeks, and MST has ACKed the full series.

  Also, there is a target patch to fix a long-standing bug within
  control CDB handling with Standby/Offline/Transition ALUA port access
  states, that had been incorrectly rejecting the control CDBs required
  for LUN scan to work during these port group states.  CC'ing to

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
  tcm_vhost: Send bad target to guest when cmd fails
  tcm_vhost: Add vhost_scsi_send_bad_target() helper
  tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq
  tcm_vhost: Remove double check of response
  tcm_vhost: Initialize vq->last_used_idx when set endpoint
  tcm_vhost: Use vq->private_data to indicate if the endpoint is setup
  tcm_vhost: Use ACCESS_ONCE for vs->vs_tpg[target] access

7 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 12 Apr 2013 22:18:56 +0000]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of ten bug fixes (and two consisting of copyright year
  update and version number change) pretty much all of which involve
  either a crash or a hang except the removal of the random sleep from
  the qla2xxx driver (which is a coding error so bad, we want it gone
  before anyone has a chance to copy it)."

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
  [SCSI] libsas: fix handling vacant phy in sas_set_ex_phy()
  [SCSI] ibmvscsi: Fix slave_configure deadlock
  [SCSI] qla2xxx: Update the driver version to
  [SCSI] qla2xxx: Remove debug code that msleeps for random duration.
  [SCSI] qla2xxx: Update copyright dates information in LICENSE.qla2xxx file.
  [SCSI] qla2xxx: Fix crash during firmware dump procedure.
  [SCSI] Revert "qla2xxx: Add setting of driver version string for vendor application."
  [SCSI] ipr: dlpar failed when adding an adapter back
  [SCSI] ipr: fix addition of abort command to HRRQ free queue
  [SCSI] st: Take additional queue ref in st_probe
  [SCSI] libsas: use right function to alloc smp response
  [SCSI] ipr: ipr_test_msi() fails when running with msi-x enabled adapter

7 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 12 Apr 2013 22:18:20 +0000]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fix from Steve French:
 "Fixes a regression in cifs in which a password which begins with a
  comma is parsed incorrectly as a blank password"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Allow passwords which begin with a delimitor

7 years agoftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
Steven Rostedt (Red Hat) [Fri, 12 Apr 2013 20:40:13 +0000]
ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section

As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to
be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the
ftrace_pid_fops is defined when DYNAMIC_FTRACE is not.

Cc: stable@vger.kernel.org
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

7 years agonet/802/mrp: fix possible race condition when calling mrp_pdu_queue()
David Ward [Thu, 11 Apr 2013 13:47:15 +0000]
net/802/mrp: fix possible race condition when calling mrp_pdu_queue()

(Adapted from a very similar change to net/802/garp.c by Cong Wang.)

mrp_pdu_queue() should ways be called with the applicant spin lock.
mrp_uninit_applicant() only holds the rtnl lock which is not enough;
a race is possible because mrp_rcv() is called in BH context:

        |-> mrp_attr_event()
          |-> mrp_pdu_append_vecattr_event()
            |-> mrp_pdu_queue()

Cc: Cong Wang <amwang@redhat.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agotuntap: fix error return code in tun_set_iff()
Wei Yongjun [Fri, 12 Apr 2013 03:17:12 +0000]
tuntap: fix error return code in tun_set_iff()

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

[ Bug added in linux-3.8 , commit 4008e97f866db665
  ("tuntap: fix ambigious multiqueue API") ]

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobe2net: take care of __vlan_put_tag return value
Ivan Vecera [Fri, 12 Apr 2013 14:49:24 +0000]
be2net: take care of __vlan_put_tag return value

The driver should use return value of __vlan_put_tag with appropriate
NULL-check instead of old skb pointer.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agotracing: Fix possible NULL pointer dereferences
Namhyung Kim [Thu, 11 Apr 2013 06:55:01 +0000]
tracing: Fix possible NULL pointer dereferences

Currently set_ftrace_pid and set_graph_function files use seq_lseek
for their fops.  However seq_open() is called only for FMODE_READ in
the fops->open() so that if an user tries to seek one of those file
when she open it for writing, it sees NULL seq_file and then panic.

It can be easily reproduced with following command:

  $ cd /sys/kernel/debug/tracing
  $ echo 1234 | sudo tee -a set_ftrace_pid

In this example, GNU coreutils' tee opens the file with fopen(, "a")
and then the fopen() internally calls lseek().

Link: http://lkml.kernel.org/r/1365663302-2170-1-git-send-email-namhyung@kernel.org

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

7 years agoMerge branch 'fixes-for-3.9' of git://gitorious.org/linux-can/linux-can
David S. Miller [Fri, 12 Apr 2013 18:29:28 +0000]
Merge branch 'fixes-for-3.9' of git://gitorious.org/linux-can/linux-can

Marc Kleine-Budde says:

here's another fix for the v3.9 release cycle, if not too late:

Christoph Fritz fixed the device tree property handling on little endian
systems in the sja1000 device tree driver. It was Mylene Josserand who noticed
that the mcp251x spi CAN driver cannot request its interrupt anymore, as the
driver is using a threaded interrupt handler without a primary one and without
specifying IRQF_ONESHOT (which is needed since v3.5). A patch by me fixes this

Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf into...
David S. Miller [Fri, 12 Apr 2013 18:26:39 +0000]
Merge branch 'master' of git://git./linux/kernel/git/pablo/nf into netfilter

Pablo Neira Ayuso says:

The following patchset contains late netfilter fixes for your net
tree, they are:

* Don't drop segmented TCP packets in the SIP helper, we've got reports
  from users that this was breaking communications when the SIP phone
  messages are larger than the MTU, from Patrick McHardy.

* Fix refcount leak in the ipset list set, from Jozsef Kadlecsik.

* On hash set resizing, the nomatch flag was lost, thus entirely inverting
  the logic of the set matching, from Jozsef Kadlecsik.

* Fix crash on NAT modules removal. Timer expiration may race with the
  module cleanup exit path while deleting conntracks, from Florian

Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoMerge tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 12 Apr 2013 14:45:17 +0000]
Merge tag 'sound-3.9' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This contains a few small ASoC fixes (wm8903, wm5102, samsung-i2s,
  tegra, and soc-compress) and an endian fix for NI USB-audio devices,
  update for Mark's e-mail address.

  No scary changes, AFAIS."

* tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  MAINTAINERS: Update e-mail address
  ASoC: wm5102: Correct lookup of arizona struct in SYSCLK event
  ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running
  ALSA: usb-audio: fix endianness bug in snd_nativeinstruments_*
  ASoC: tegra: Don't claim to support PCM pause and resume
  ASoC: Samsung: set drvdata before adding secondary device
  ASoC: Samsung: return error if drvdata is not set
  ASoC: compress: Cancel delayed power down if needed
  ASoC: core: Fix to check return value of snd_soc_update_bits_locked()

7 years agokthread: Prevent unpark race which puts threads on the wrong cpu
Thomas Gleixner [Tue, 9 Apr 2013 07:33:34 +0000]
kthread: Prevent unpark race which puts threads on the wrong cpu

The smpboot threads rely on the park/unpark mechanism which binds per
cpu threads on a particular core. Though the functionality is racy:

CPU0           CPU1             CPU2
unpark(T)     wake_up_process(T)
  clear(SHOULD_PARK) T runs
leave parkme() due to !SHOULD_PARK
  bind_to(CPU2) BUG_ON(wrong CPU)

We cannot let the tasks move themself to the target CPU as one of
those tasks is actually the migration thread itself, which requires
that it starts running on the target cpu right away.

The solution to this problem is to prevent wakeups in park mode which
are not from unpark(). That way we can guarantee that the association
of the task to the target cpu is working correctly.

Add a new task state (TASK_PARKED) which prevents other wakeups and
use this state explicitly for the unpark wakeup.

Peter noticed: Also, since the task state is visible to userspace and
all the parked tasks are still in the PID space, its a good hint in ps
and friends that these tasks aren't really there for the moment.

The migration thread has another related issue.

CPU0               CPU1
Bring up CPU2

The sched_set_stop_task() call is issued while the task is on the
runqueue of CPU1 and that confuses the hell out of the stop_task class
on that cpu. So we need the same synchronizaion before

Reported-by: Dave Jones <davej@redhat.com>
Reported-and-tested-by: Dave Hansen <dave@sr71.net>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Acked-by: Peter Ziljstra <peterz@infradead.org>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: dhillf@gmail.com
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1304091635430.21884@ionos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

7 years agoMerge tag 'asoc-maintainers-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Takashi Iwai [Fri, 12 Apr 2013 11:53:35 +0000]
Merge tag 'asoc-maintainers-v3.9-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus

MAINTAINERS: Update e-mail address

Update the e-mail address I use for subsystems.

7 years agocan: sja1000: fix handling on dt properties on little endian systems
Christoph Fritz [Thu, 11 Apr 2013 19:32:57 +0000]
can: sja1000: fix handling on dt properties on little endian systems

To get correct endianes on little endian cpus (like arm) while reading device
tree properties, this patch replaces of_get_property() with
of_property_read_u32(). While there use of_property_read_bool() for the
handling of the boolean "nxp,no-comparator-bypass" property.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

7 years agoMAINTAINERS: Update e-mail address
Mark Brown [Fri, 12 Apr 2013 10:39:57 +0000]
MAINTAINERS: Update e-mail address

Update the e-mail address I use for subsystems.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

7 years agocan: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq
Marc Kleine-Budde [Thu, 11 Apr 2013 08:08:27 +0000]
can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq

Since commit:

    1c6c695 genirq: Reject bogus threaded irq requests

threaded irqs must provide a primary handler or set the IRQF_ONESHOT flag.
Since the mcp251x driver doesn't make use of a primary handler set the

Cc: linux-stable <stable@vger.kernel.org> # >= v3.5
Reported-by: Mylene Josserand <Mylene.Josserand@navocap.com>
Tested-by: Mylene Josserand <Mylene.Josserand@navocap.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

7 years agonetfilter: nf_nat: fix race when unloading protocol modules
Florian Westphal [Thu, 11 Apr 2013 04:22:39 +0000]
netfilter: nf_nat: fix race when unloading protocol modules

following oops was reported:
RIP: 0010:[<ffffffffa03227f2>]  [<ffffffffa03227f2>] nf_nat_cleanup_conntrack+0x42/0x70 [nf_nat]
RSP: 0018:ffff880202c63d40  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801ac7bec28 RCX: ffff8801d0eedbe0
RDX: dead000000200200 RSI: 0000000000000011 RDI: ffffffffa03265b8
Call Trace:
 [<ffffffffa02febed>] destroy_conntrack+0xbd/0x110 [nf_conntrack]

Happens when a conntrack timeout expires right after first part
of the nat cleanup has completed (bysrc hash removal), but before
part 2 has completed (re-initialization of nat area).

[ destroy callback tries to delete bysrc again ]

Patrick suggested to just remove the affected conntracks -- the
connections won't work properly anyway without nat transformation.

So, lets do that.

Reported-by: CAI Qian <caiqian@redhat.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

7 years agoMerge tag 'asoc-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Takashi Iwai [Fri, 12 Apr 2013 08:27:39 +0000]
Merge tag 'asoc-v3.9-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v3.9

A few updates, more than I'd like, fixing some relatively small issues
but mostly driver specific ones.  Nothing wildly exciting so if it
doesn't make v3.9 it won't be the end of the world but it'd be nice.

7 years agox86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
Boris Ostrovsky [Thu, 11 Apr 2013 17:59:52 +0000]
x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set

When CONFIG_DEBUG_PAGEALLOC is set page table updates made by
kernel_map_pages() are not made visible (via TLB flush)
immediately if lazy MMU is on. In environments that support lazy
MMU (e.g. Xen) this may lead to fatal page faults, for example,
when zap_pte_range() needs to allocate pages in
__tlb_remove_page() -> tlb_next_batch().

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: konrad.wilk@oracle.com
Link: http://lkml.kernel.org/r/1365703192-2089-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

7 years agox86/mm/cpa/selftest: Fix false positive in CPA self test
Andrea Arcangeli [Thu, 11 Apr 2013 13:36:09 +0000]
x86/mm/cpa/selftest: Fix false positive in CPA self test

If the pmd is not present, _PAGE_PSE will not be set anymore.
Fix the false positive.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Stefan Bader <stefan.bader@canonical.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1365687369-30802-1-git-send-email-aarcange@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

7 years agoperf: Fix error return code
Wei Yongjun [Fri, 12 Apr 2013 03:05:54 +0000]
perf: Fix error return code

Fix to return -ENOMEM in the allocation error case instead of 0
(if pmu_bus_running == 1), as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: acme@ghostprotocols.net
Link: http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08c2w1tngQ@mail.gmail.com
[ Tweaked the error code setting placement and the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>

7 years agodrm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
Daniel Vetter [Thu, 11 Apr 2013 14:26:55 +0000]
drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event

Driver's and ->fill_modes functions are allowed to grab crtc mutexes
(for e.g. load detect). Hence we need to first only grab the general
kms mutex, and only in a second step grab all locks to do the

This prevents a deadlock on my gm45 in the tv load detect code called
by drm_helper_probe_single_connector_modes.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoudl: handle EDID failure properly.
Dave Airlie [Fri, 12 Apr 2013 03:25:20 +0000]
udl: handle EDID failure properly.

Don't oops seems proper.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 12 Apr 2013 03:35:11 +0000]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "The first one fixes issue in pl330 to check for DT compatible and
  the second one fixes omap-dma to start without delay"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: omap-dma: Start DMA without delay for cyclic channels
  DMA: PL330: Add check if device tree compatible

7 years agoMerge tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 12 Apr 2013 03:33:38 +0000]
Merge tag 'pm-3.9-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:

 - System reboot/halt fix related to CPU offline ordering from Huacai

 - intel_pstate driver fix for a delay time computation error
   occasionally crashing systems using it from Dirk Brandewie.

* tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / reboot: call syscore_shutdown() after disable_nonboot_cpus()
  cpufreq / intel_pstate: Set timer timeout correctly

7 years agoMerge tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Fri, 12 Apr 2013 01:22:20 +0000]
Merge tag 'regmap-v3.9-rc6' of git://git./linux/kernel/git/broonie/regmap

Pull regmap revert from Mark Brown:
 "regmap: Back out work buffer fix

  This reverts commit bc8ce4 (regmap: don't corrupt work buffer in
  _regmap_raw_write()) since it turns out that it can cause issues when
  taken in isolation from the other changes in -next that lead to its
  discovery.  On the basis that nobody noticed the problems for quite
  some time without that subsequent work let's drop it from v3.9."

* tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Back out work buffer fix

7 years agoMerge tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 12 Apr 2013 01:21:45 +0000]
Merge tag 'gpio-fixes-v3.9-rc6' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fix from Linus Walleij:
 "Oneliner fix for the PCA 953x driver."

* tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: pca953x: fix irq_domain_add_simple usage

7 years agoMerge tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 12 Apr 2013 01:20:31 +0000]
Merge tag 'arm-soc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC bug fixes from Arnd Bergmann:
 "A little later during the week than the last few pull requests, since
  there was very little that came in before 3.9-rc6.  At least things
  have calmed down again here.

  Some important bug fixes that came in over the last 10 days, mostly
  mvebu and imx:

   - Multiple regressions on i.mx following the conversion of the clock
     code, hopefully the last we are seeing of those.
   - a regression in the mvebu irq handling code
   - An incorrect register offset in the rewritten s3c24xx irq code.
   - Two bugs in setting up the iomega_ix2_200 machine
   - Turning on an extra bus clock on imx
   - A MAINTAINERS file entry for Roland Stigge"

* tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: S3C24XX: Fix interrupt pending register offset of the EINT controller
  ARM: S3C24XX: Correct NR_IRQS definition for s3c2440
  ARM i.MX6: Fix ldb_di clock selection
  ARM: imx: provide twd clock lookup from device tree
  ARM: imx35 Bugfix admux clock
  ARM: clk-imx35: Bugfix iomux clock
  ARM: mxs: Slow down the I2C clock speed
  MAINTAINERS: Add maintainer for LPC32xx
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

7 years agotcp: Reallocate headroom if it would overflow csum_start
Thomas Graf [Thu, 11 Apr 2013 10:57:18 +0000]
tcp: Reallocate headroom if it would overflow csum_start

If a TCP retransmission gets partially ACKed and collapsed multiple
times it is possible for the headroom to grow beyond 64K which will
overflow the 16bit skb->csum_start which is based on the start of
the headroom. It has been observed rarely in the wild with IPoIB due
to the 64K MTU.

Verify if the acking and collapsing resulted in a headroom exceeding
what csum_start can cover and reallocate the headroom if so.

A big thank you to Jim Foraker <foraker1@llnl.gov> and the team at
LLNL for helping out with the investigation and testing.

Reported-by: Jim Foraker <foraker1@llnl.gov>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years ago[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
Wei Yongjun [Sun, 2 Dec 2012 13:33:24 +0000]
[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()

The dereference to 'put_index' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

7 years agostmmac: prevent interrupt loop with MMC RX IPC Counter
Christian Ruppert [Tue, 9 Apr 2013 21:56:04 +0000]
stmmac: prevent interrupt loop with MMC RX IPC Counter

If the DesignWare MAC is synthesised with MMC RX IPC Counter, an unmanaged
and unacknowledged interrupt is generated after some time of operation.

This patch masks the undesired interrupts.

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobonding: IFF_BONDING is not stripped on enslave failure
nikolay@redhat.com [Thu, 11 Apr 2013 09:18:56 +0000]
bonding: IFF_BONDING is not stripped on enslave failure

While enslaving a new device and after IFF_BONDING flag is set, in case
of failure it is not stripped from the device's priv_flags while
cleaning up, which could lead to other problems.
Cleaning at err_close because the flag is set after dev_open().

v2: no change

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobonding: fix netdev event NULL pointer dereference
nikolay@redhat.com [Thu, 11 Apr 2013 09:18:55 +0000]
bonding: fix netdev event NULL pointer dereference

In commit 471cb5a33dcbd7c529684a2ac7ba4451414ee4a7 ("bonding: remove
usage of dev->master") a bug was introduced which causes a NULL pointer
dereference. If a bond device is in mode 6 (ALB) and a slave is added
it will dereference a NULL pointer in bond_slave_netdev_event().
This is because in bond_enslave we have bond_alb_init_slave() which
changes the MAC address of the slave and causes a NETDEV_CHANGEADDR.
Then we have in bond_slave_netdev_event():
        struct slave *slave = bond_slave_get_rtnl(slave_dev);
        struct bonding *bond = slave->bond;
bond_slave_get_rtnl() dereferences slave_dev->rx_handler_data which at
that time is NULL since netdev_rx_handler_register() is called later.

This is fixed by checking if slave is NULL before dereferencing it.

v2: Comment style changed.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agotcp: incoming connections might use wrong route under synflood
Dmitry Popov [Thu, 11 Apr 2013 08:55:07 +0000]
tcp: incoming connections might use wrong route under synflood

There is a bug in cookie_v4_check (net/ipv4/syncookies.c):
flowi4_init_output(&fl4, 0, sk->sk_mark, RT_CONN_FLAGS(sk),
   (opt && opt->srr) ? opt->faddr : ireq->rmt_addr,
   ireq->loc_addr, th->source, th->dest);

Here we do not respect sk->sk_bound_dev_if, therefore wrong dst_entry may be
taken. This dst_entry is used by new socket (get_cookie_sock ->
tcp_v4_syn_recv_sock), so its packets may take the wrong path.

Signed-off-by: Dmitry Popov <dp@highloadlab.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agogpio: pca953x: fix irq_domain_add_simple usage
Alexandre Belloni [Wed, 3 Apr 2013 17:40:14 +0000]
gpio: pca953x: fix irq_domain_add_simple usage

We actually have to pass chip as the host_data parameter of
irq_domain_add_simple() as later on, it is used to initialize chip_data
in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer
dereference after calling irq_data_get_irq_chip_data() in
pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(),
pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type().

Fixes regression introduced by commit
0e8f2fdacf1d44651aa7e57063c76142d1f4988b (gpio: pca953x: use simple

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

7 years agoMerge remote-tracking branch 'asoc/fix/wm8903' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:31 +0000]
Merge remote-tracking branch 'asoc/fix/wm8903' into tmp

7 years agoMerge remote-tracking branch 'asoc/fix/tegra' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:30 +0000]
Merge remote-tracking branch 'asoc/fix/tegra' into tmp

7 years agoMerge remote-tracking branch 'asoc/fix/samsung' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:29 +0000]
Merge remote-tracking branch 'asoc/fix/samsung' into tmp

7 years agoMerge remote-tracking branch 'asoc/fix/core' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:28 +0000]
Merge remote-tracking branch 'asoc/fix/core' into tmp

7 years agoMerge remote-tracking branch 'asoc/fix/compress' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:27 +0000]
Merge remote-tracking branch 'asoc/fix/compress' into tmp

7 years agoMerge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper...
Arnd Bergmann [Thu, 11 Apr 2013 14:55:29 +0000]
Merge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper <jason@lakedaemon.net>:

mvebu fixes for v3.9 round 3

 - Kirkwood
    - a couple of small fixes for the Iomega ix2-200 board (ether and led)
 - mvebu
    - allow GPIO button to work on Mirabox when running SMP

* tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

7 years agokvm/ppc/e500: eliminate tlb_refs
Scott Wood [Wed, 6 Mar 2013 16:02:49 +0000]
kvm/ppc/e500: eliminate tlb_refs

Commit 523f0e5421c12610527c620b983b443f329e3a32 ("KVM: PPC: E500:
Explicitly mark shadow maps invalid") began using E500_TLB_VALID
for guest TLB1 entries, and skipping invalidations if it's not set.

However, when E500_TLB_VALID was set for such entries, it was on a
fake local ref, and so the invalidations never happen.  gtlb_privs
is documented as being only for guest TLB0, though we already violate
that with E500_TLB_BITMAP.

Now that we have MMU notifiers, and thus don't need to actually
retain a reference to the mapped pages, get rid of tlb_refs, and
use gtlb_privs for E500_TLB_VALID in TLB1.

Since we can have more than one host TLB entry for a given tlbe_ref,
be careful not to clear existing flags that are relevant to other
host TLB entries when preparing a new host TLB entry.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

7 years agokvm/ppc/e500: g2h_tlb1_map: clear old bit before setting new bit
Scott Wood [Wed, 13 Feb 2013 19:37:49 +0000]
kvm/ppc/e500: g2h_tlb1_map: clear old bit before setting new bit

It's possible that we're using the same host TLB1 slot to map (a
presumably different portion of) the same guest TLB1 entry.  Clear
the bit in the map before setting it, so that if the esels are the same
the bit will remain set.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

7 years agokvm/ppc/e500: h2g_tlb1_rmap: esel 0 is valid
Scott Wood [Wed, 13 Feb 2013 19:37:48 +0000]
kvm/ppc/e500: h2g_tlb1_rmap: esel 0 is valid

Add one to esel values in h2g_tlb1_rmap, so that "no mapping" can be
distinguished from "esel 0".  Note that we're not saved by the fact
that host esel 0 is reserved for non-KVM use, because KVM host esel
numbering is not the raw host numbering (see to_htlb1_esel).

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

7 years agotarget: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
Nicholas Bellinger [Wed, 10 Apr 2013 22:00:27 +0000]
target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs

This patch fixes a bug where a handful of informational / control CDBs
that should be allowed during ALUA access state Standby/Offline/Transition
where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*.

This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN
registration when LUN scanning occured during these ALUA access states.

Cc: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>