Commit Graph

705945 Commits

Author SHA1 Message Date
Ladi Prosek
488e32f198 KVM: trace events: update list of exit reasons
Adding entries for exit reasons 23 - 27:

  KVM_EXIT_EPR
  KVM_EXIT_SYSTEM_EVENT
  KVM_EXIT_S390_STSI
  KVM_EXIT_IOAPIC_EOI
  KVM_EXIT_HYPERV

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14 18:54:14 +02:00
Wanpeng Li
9a6e7c3981 KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously
qemu-system-x86-8600  [004] d..1  7205.687530: kvm_entry: vcpu 2
qemu-system-x86-8600  [004] ....  7205.687532: kvm_exit: reason EXCEPTION_NMI rip 0xffffffffa921297d info ffffeb2c0e44e018 80000b0e
qemu-system-x86-8600  [004] ....  7205.687532: kvm_page_fault: address ffffeb2c0e44e018 error_code 0
qemu-system-x86-8600  [004] ....  7205.687620: kvm_try_async_get_page: gva = 0xffffeb2c0e44e018, gfn = 0x427e4e
qemu-system-x86-8600  [004] .N..  7205.687628: kvm_async_pf_not_present: token 0x8b002 gva 0xffffeb2c0e44e018
    kworker/4:2-7814  [004] ....  7205.687655: kvm_async_pf_completed: gva 0xffffeb2c0e44e018 address 0x7fcc30c4e000
qemu-system-x86-8600  [004] ....  7205.687703: kvm_async_pf_ready: token 0x8b002 gva 0xffffeb2c0e44e018
qemu-system-x86-8600  [004] d..1  7205.687711: kvm_entry: vcpu 2

After running some memory intensive workload in guest, I catch the kworker
which completes the GUP too quickly, and queues an "Page Ready" #PF exception
after the "Page not Present" exception before the next vmentry as the above
trace which will result in #DF injected to guest.

This patch fixes it by clearing the queue for "Page not Present" if "Page Ready"
occurs before the next vmentry since the GUP has already got the required page
and shadow page table has already been fixed by "Page Ready" handler.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Fixes: 7c90705bf2 ("KVM: Inject asynchronous page fault into a PV guest if page is swapped out.")
[Changed indentation and added clearing of injected. - Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14 18:43:43 +02:00
Pierre-Yves MORDRET
aeb068c572 i2c: i2c-stm32f7: add driver
This patch adds initial support for the STM32F7 I2C controller.

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14 17:34:43 +02:00
Pierre-Yves MORDRET
df8c847b53 i2c: i2c-stm32f4: use generic definition of speed enum
This patch uses a more generic definition of speed enum for i2c-stm32f4
driver.

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Reviewed-by: Ludovic BARRE <ludovic.barre@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14 17:34:29 +02:00
Pierre-Yves MORDRET
edcd2ae8eb dt-bindings: i2c-stm32: Document the STM32F7 I2C bindings
This patch adds the documentation of device tree bindings for STM32F7 I2C

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14 17:34:14 +02:00
Radim Krčmář
648d453dd4 Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
Bug fixes for stable.
2017-09-14 17:21:10 +02:00
Wanpeng Li
a5f01f8e97 KVM: X86: Don't block vCPU if there is pending exception
Don't block vCPU if there is pending exception.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14 17:16:14 +02:00
Suravee Suthikulpanit
67034bb9dd KVM: SVM: Add irqchip_split() checks before enabling AVIC
SVM AVIC hardware accelerates guest write to APIC_EOI register
(for edge-trigger interrupt), which means it does not trap to KVM.

So, only enable SVM AVIC only in split irqchip mode.
(e.g. launching qemu w/ option '-machine kernel_irqchip=split').

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Fixes: 44a95dae1d ("KVM: x86: Detect and Initialize AVIC support")
[Removed pr_debug - Radim.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14 17:05:13 +02:00
Christoph Hellwig
6faadbbb7f dmi: Mark all struct dmi_system_id instances const
... and __initconst if applicable.

Based on similar work for an older kernel in the Grsecurity patch.

[JD: fix toshiba-wmi build]
[JD: add htcpen]
[JD: move __initconst where checkscript wants it]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2017-09-14 11:59:30 +02:00
Prakash Gupta
5f48f0bd4e mm, page_owner: skip unnecessary stack_trace entries
The page_owner stacktrace always begin as follows:

  [<ffffff987bfd48f4>] save_stack+0x40/0xc8
  [<ffffff987bfd4da8>] __set_page_owner+0x3c/0x6c

These two entries do not provide any useful information and limits the
available stacktrace depth.  The page_owner stacktrace was skipping
caller function from stack entries but this was missed with commit
f2ca0b5571 ("mm/page_owner: use stackdepot to store stacktrace")

Example page_owner entry after the patch:

  Page allocated via order 0, mask 0x8(ffffff80085fb714)
  PFN 654411 type Movable Block 639 type CMA Flags 0x0(ffffffbe5c7f12c0)
  [<ffffff9b64989c14>] post_alloc_hook+0x70/0x80
  ...
  [<ffffff9b651216e8>] msm_comm_try_state+0x5f8/0x14f4
  [<ffffff9b6512486c>] msm_vidc_open+0x5e4/0x7d0
  [<ffffff9b65113674>] msm_v4l2_open+0xa8/0x224

Link: http://lkml.kernel.org/r/1504078343-28754-2-git-send-email-guptap@codeaurora.org
Fixes: f2ca0b5571 ("mm/page_owner: use stackdepot to store stacktrace")
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:16 -07:00
Prakash Gupta
bb53c820c5 arm64: stacktrace: avoid listing stacktrace functions in stacktrace
The stacktraces always begin as follows:

  [<c00117b4>] save_stack_trace_tsk+0x0/0x98
  [<c0011870>] save_stack_trace+0x24/0x28
  ...

This is because the stack trace code includes the stack frames for
itself.  This is incorrect behaviour, and also leads to "skip" doing the
wrong thing (which is the number of stack frames to avoid recording.)

Perversely, it does the right thing when passed a non-current thread.
Fix this by ensuring that we have a known constant number of frames
above the main stack trace function, and always skip these.

This was fixed for arch arm by commit 3683f44c42 ("ARM: stacktrace:
avoid listing stacktrace functions in stacktrace")

Link: http://lkml.kernel.org/r/1504078343-28754-1-git-send-email-guptap@codeaurora.org
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:16 -07:00
Michal Hocko
0ee931c4e3 mm: treewide: remove GFP_TEMPORARY allocation flag
GFP_TEMPORARY was introduced by commit e12ba74d8f ("Group short-lived
and reclaimable kernel allocations") along with __GFP_RECLAIMABLE.  It's
primary motivation was to allow users to tell that an allocation is
short lived and so the allocator can try to place such allocations close
together and prevent long term fragmentation.  As much as this sounds
like a reasonable semantic it becomes much less clear when to use the
highlevel GFP_TEMPORARY allocation flag.  How long is temporary? Can the
context holding that memory sleep? Can it take locks? It seems there is
no good answer for those questions.

The current implementation of GFP_TEMPORARY is basically GFP_KERNEL |
__GFP_RECLAIMABLE which in itself is tricky because basically none of
the existing caller provide a way to reclaim the allocated memory.  So
this is rather misleading and hard to evaluate for any benefits.

I have checked some random users and none of them has added the flag
with a specific justification.  I suspect most of them just copied from
other existing users and others just thought it might be a good idea to
use without any measuring.  This suggests that GFP_TEMPORARY just
motivates for cargo cult usage without any reasoning.

I believe that our gfp flags are quite complex already and especially
those with highlevel semantic should be clearly defined to prevent from
confusion and abuse.  Therefore I propose dropping GFP_TEMPORARY and
replace all existing users to simply use GFP_KERNEL.  Please note that
SLAB users with shrinkers will still get __GFP_RECLAIMABLE heuristic and
so they will be placed properly for memory fragmentation prevention.

I can see reasons we might want some gfp flag to reflect shorterm
allocations but I propose starting from a clear semantic definition and
only then add users with proper justification.

This was been brought up before LSF this year by Matthew [1] and it
turned out that GFP_TEMPORARY really doesn't have a clear semantic.  It
seems to be a heuristic without any measured advantage for most (if not
all) its current users.  The follow up discussion has revealed that
opinions on what might be temporary allocation differ a lot between
developers.  So rather than trying to tweak existing users into a
semantic which they haven't expected I propose to simply remove the flag
and start from scratch if we really need a semantic for short term
allocations.

[1] http://lkml.kernel.org/r/20170118054945.GD18349@bombadil.infradead.org

[akpm@linux-foundation.org: fix typo]
[akpm@linux-foundation.org: coding-style fixes]
[sfr@canb.auug.org.au: drm/i915: fix up]
  Link: http://lkml.kernel.org/r/20170816144703.378d4f4d@canb.auug.org.au
Link: http://lkml.kernel.org/r/20170728091904.14627-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Neil Brown <neilb@suse.de>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:16 -07:00
Arnd Bergmann
d0dbf77130 IB/mlx4: fix sprintf format warning
gcc-7 points out that a negative port_num value would overflow the
string buffer:

  drivers/infiniband/hw/mlx4/sysfs.c: In function 'mlx4_ib_device_register_sysfs':
  drivers/infiniband/hw/mlx4/sysfs.c:251:16: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=]
  drivers/infiniband/hw/mlx4/sysfs.c:251:2: note: 'sprintf' output between 2 and 11 bytes into a destination of size 10
  drivers/infiniband/hw/mlx4/sysfs.c:303:17: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=]
  drivers/infiniband/hw/mlx4/sysfs.c:303:3: note: 'sprintf' output between 2 and 11 bytes into a destination of size 10

While we should be able to assume that port_num is positive here, making
the buffer one byte longer has no downsides and avoids the warning.

Fixes: c1e7e46612 ("IB/mlx4: Add iov directory in sysfs under the ib device")
Link: http://lkml.kernel.org/r/20170714120720.906842-23-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:15 -07:00
Arnd Bergmann
ebfddb3d44 fscache: fix fscache_objlist_show format processing
gcc points out a minor bug in the handling of unknown cookie types,
which could result in a string overflow when the integer is copied into
a 3-byte string:

  fs/fscache/object-list.c: In function 'fscache_objlist_show':
  fs/fscache/object-list.c:265:19: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=]
   sprintf(_type, "%02u", cookie->def->type);
                  ^~~~~~
  fs/fscache/object-list.c:265:4: note: 'sprintf' output between 3 and 4 bytes into a destination of size 3

This is currently harmless as no code sets a type other than 0 or 1, but
it makes sense to use snprintf() here to avoid overflowing the array if
that changes.

Link: http://lkml.kernel.org/r/20170714120720.906842-22-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:15 -07:00
Geert Uytterhoeven
8185f5708d lib/test_bitmap.c: use ULL suffix for 64-bit constants
With gcc 4.1.2:

  lib/test_bitmap.c:189: warning: integer constant is too large for `long' type
  lib/test_bitmap.c:190: warning: integer constant is too large for `long' type
  lib/test_bitmap.c:194: warning: integer constant is too large for `long' type
  lib/test_bitmap.c:195: warning: integer constant is too large for `long' type

Add the missing "ULL" suffix to fix this.

Link: http://lkml.kernel.org/r/1505040523-31230-1-git-send-email-geert@linux-m68k.org
Fixes: 60ef690018 ("bitmap: introduce BITMAP_FROM_U64()")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Yury Norov <ynorov@caviumnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:15 -07:00
Arnd Bergmann
6dec0dd4a6 procfs: remove unused variable
In NOMMU configurations, we get a warning about a variable that has become
unused:

  fs/proc/task_nommu.c: In function 'nommu_vma_show':
  fs/proc/task_nommu.c:148:28: error: unused variable 'priv' [-Werror=unused-variable]

Link: http://lkml.kernel.org/r/20170911200231.3171415-1-arnd@arndb.de
Fixes: 1240ea0dc3 ("fs, proc: remove priv argument from is_stack")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:15 -07:00
Andrew Morton
c848c49a62 drivers/media/cec/cec-adap.c: fix build with gcc-4.4.4
gcc-4.4.4 has issues with initialization of anonymous unions:

  drivers/media/cec/cec-adap.c: In function 'cec_queue_msg_fh':
  drivers/media/cec/cec-adap.c:184: error: unknown field 'lost_msgs' specified in initializer

work around this.

Fixes: 6b2bbb0874 ("media: cec: rework the cec event handling")
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:15 -07:00
Eric Biggers
a47f68d6a9 idr: remove WARN_ON_ONCE() when trying to replace negative ID
IDR only supports non-negative IDs.  There used to be a 'WARN_ON_ONCE(id <
0)' in idr_replace(), but it was intentionally removed by commit
2e1c9b2867 ("idr: remove WARN_ON_ONCE() on negative IDs").

Then it was added back by commit 0a835c4f09 ("Reimplement IDR and IDA
using the radix tree").  However it seems that adding it back was a
mistake, given that some users such as drm_gem_handle_delete()
(DRM_IOCTL_GEM_CLOSE) pass in a value from userspace to idr_replace(),
allowing the WARN_ON_ONCE to be triggered.  drm_gem_handle_delete()
actually just wants idr_replace() to return an error code if the ID is
not allocated, including in the case where the ID is invalid (negative).

So once again remove the bogus WARN_ON_ONCE().

This bug was found by syzkaller, which encountered the following
warning:

    WARNING: CPU: 3 PID: 3008 at lib/idr.c:157 idr_replace+0x1d8/0x240 lib/idr.c:157
    Kernel panic - not syncing: panic_on_warn set ...

    CPU: 3 PID: 3008 Comm: syzkaller218828 Not tainted 4.13.0-rc4-next-20170811 
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
    Call Trace:
     fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
     do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
     do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
     do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:310
     do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
     invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:930
    RIP: 0010:idr_replace+0x1d8/0x240 lib/idr.c:157
    RSP: 0018:ffff8800394bf9f8 EFLAGS: 00010297
    RAX: ffff88003c6c60c0 RBX: 1ffff10007297f43 RCX: 0000000000000000
    RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8800394bfa78
    RBP: ffff8800394bfae0 R08: ffffffff82856487 R09: 0000000000000000
    R10: ffff8800394bf9a8 R11: ffff88006c8bae28 R12: ffffffffffffffff
    R13: ffff8800394bfab8 R14: dffffc0000000000 R15: ffff8800394bfbc8
     drm_gem_handle_delete+0x33/0xa0 drivers/gpu/drm/drm_gem.c:297
     drm_gem_close_ioctl+0xa1/0xe0 drivers/gpu/drm/drm_gem.c:671
     drm_ioctl_kernel+0x1e7/0x2e0 drivers/gpu/drm/drm_ioctl.c:729
     drm_ioctl+0x72e/0xa50 drivers/gpu/drm/drm_ioctl.c:825
     vfs_ioctl fs/ioctl.c:45 [inline]
     do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:685
     SYSC_ioctl fs/ioctl.c:700 [inline]
     SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691
     entry_SYSCALL_64_fastpath+0x1f/0xbe

Here is a C reproducer:

    #include <fcntl.h>
    #include <stddef.h>
    #include <stdint.h>
    #include <sys/ioctl.h>
    #include <drm/drm.h>

    int main(void)
    {
            int cardfd = open("/dev/dri/card0", O_RDONLY);

            ioctl(cardfd, DRM_IOCTL_GEM_CLOSE,
                  &(struct drm_gem_close) { .handle = -1 } );
    }

Link: http://lkml.kernel.org/r/20170906235306.20534-1-ebiggers3@gmail.com
Fixes: 0a835c4f09 ("Reimplement IDR and IDA using the radix tree")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: <stable@vger.kernel.org> [v4.11+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 18:53:15 -07:00
Dan Carpenter
fa5f7b51fc sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
This code causes a static checker warning because Smatch doesn't trust
anything that comes from skb->data.  I've reviewed this code and I do
think skb->data can be controlled by the user here.

The sctp_event_subscribe struct has 13 __u8 fields and we want to see
if ours is non-zero.  sn_type can be any value in the 0-USHRT_MAX range.
We're subtracting SCTP_SN_TYPE_BASE which is 1 << 15 so we could read
either before the start of the struct or after the end.

This is a very old bug and it's surprising that it would go undetected
for so long but my theory is that it just doesn't have a big impact so
it would be hard to notice.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 16:59:47 -07:00
Thor Thayer
0560ad5762 i2c: altera: Add Altera I2C Controller driver
Add driver support for the Altera I2C Controller. The I2C
controller is soft IP for use in FPGAs.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-13 23:37:16 +02:00
Thor Thayer
8f73681616 dt-bindings: i2c: Add Altera I2C Controller
Add the documentation to support the Altera synthesizable
logic I2C Controller in FPGA.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-13 23:37:16 +02:00
Sergei Shtylyov
6fa9c623a0 MAINTAINERS: review Renesas DT bindings as well
When adding myself  as a reviewer for  the Renesas  Ethernet drivers
I somehow forgot about the bindings -- I want to review them as well.

Fixes: 8e6569af3a ("MAINTAINERS: add myself as Renesas Ethernet drivers reviewer")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 13:41:04 -07:00
Dan Carpenter
6d20e6b235 um: return negative in tuntap_open_tramp()
The intention is to return negative error codes.  "pid" is already
negative but we accidentally negate it again back to positive.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:36:50 +02:00
Dan Carpenter
7b24afbfe3 um: remove a stray tab
Static checkers would urge us to add curly braces to this code, but
actually the code works correctly.  It just isn't indented right.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:36:27 +02:00
Thomas Meyer
39940dbcaa um: Use relative modversions with LD_SCRIPT_DYN
When building a dynamic kernel image use relative symbols with MODVERSIONS.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:35:06 +02:00
Thomas Meyer
883354afbc um: link vmlinux with -no-pie
Debian's gcc defaults to pie. The global Makefile already defines the -fno-pie option.
Link UML dynamic kernel image also with -no-pie to fix the build.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:34:30 +02:00
Thomas Meyer
d3488649dc um: Fix CONFIG_GCOV for modules.
Explicitly export symbols so modpost doesn't complain.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:33:54 +02:00
James Pack
cbb0006def Fix minor typos and grammar in UML start_up help
Signed-off-by: James Pack <jpack61108@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:33:23 +02:00
Krzysztof Kozlowski
a997960b26 um: defconfig: Cleanup from old Kconfig options
Remove old, dead Kconfig option INET_LRO. It is gone since
commit 7bbf3cae65 ("ipv4: Remove inet_lro library").

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:32:51 +02:00
Eric Dumazet
ca558e1859 net_sched: gen_estimator: fix scaling error in bytes/packets samples
Denys reported wrong rate estimations with HTB classes.

It appears the bug was added in linux-4.10, since my tests
where using intervals of one second only.

HTB using 4 sec default rate estimators, reported rates
were 4x higher.

We need to properly scale the bytes/packets samples before
integrating them in EWMA.

Tested:
 echo 1 >/sys/module/sch_htb/parameters/htb_rate_est

 Setup HTB with one class with a rate/cail of 5Gbit

 Generate traffic on this class

 tc -s -d cl sh dev eth0 classid 7002:11
class htb 7002:11 parent 7002:1 prio 5 quantum 200000 rate 5Gbit ceil
5Gbit linklayer ethernet burst 80000b/1 mpu 0b cburst 80000b/1 mpu 0b
level 0 rate_handle 1
 Sent 1488215421648 bytes 982969243 pkt (dropped 0, overlimits 0
requeues 0)
 rate 5Gbit 412814pps backlog 136260b 2p requeues 0
 TCP pkts/rtx 982969327/45 bytes 1488215557414/68130
 lended: 22732826 borrowed: 0 giants: 0
 tokens: -1684 ctokens: -1684

Fixes: 1c0d32fde5 ("net_sched: gen_estimator: complete rewrite of rate estimators")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Denys Fedoryshchenko <nuclearcat@nuclearcat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 13:30:53 -07:00
David S. Miller
d371465e81 Merge branch 'nfp-card-init'
Jakub Kicinski says:

====================
nfp: wait more carefully for card init

The first patch is a small fix for flower offload, we need a whitelist
of supported matches, otherwise the unsupported ones will be ignored.

The second and the third patch are adding wait/polling to the probe path.
We had reports of driver failing probe because it couldn't find the
control process (NSP) on the card.  Turns out the NSP will only announce
its existence after it's fully initialized.  Until now we assumed it
will be reachable, just not processing commands (hence we wait for
a NOOP command to execute successfully).

v2:
 - fix a bad merge which resulted in a build warning and retest.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 13:29:13 -07:00
Jakub Kicinski
7dbd5b7517 nfp: wait for the NSP resource to appear on boot
The control process (NSP) may take some time to complete its
initialization.  This is not a problem on most servers, but
on very fast-booting machines it may not be ready for operation
when driver probes the device.  There is also a version of the
flash in the wild where NSP tries to train the links as part
of init.  To wait for NSP initialization we should make sure
its resource has already been added to the resource table.
NSP adds itself there as last step of init.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 13:29:13 -07:00
Jakub Kicinski
4cbe94f2af nfp: wait for board state before talking to the NSP
Board state informs us which low-level initialization stages the card
has completed.  We should wait for the card to be fully initialized
before trying to communicate with it, not only before we configure
passing traffic.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 13:29:13 -07:00
Pieter Jansen van Vuuren
b95a2d831b nfp: add whitelist of supported flow dissector
Previously we did not check the flow dissector against a list of allowed
and supported flow key dissectors. This patch introduces such a list and
correctly rejects unsupported flow keys.

Fixes: 43f84b72c5 ("nfp: add metadata to each flow offload")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-13 13:29:13 -07:00
Thomas Meyer
6f602afda7 um: Fix FP register size for XSTATE/XSAVE
Hard code max size. Taken from
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gdb/common/x86-xstate.h

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:24:38 +02:00
Uwe Kleine-König
89b68cd926 UBI: Fix two typos in comments
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:05:30 +02:00
Colin Ian King
d2e43d192b ubi: fastmap: fix spelling mistake: "invalidiate" -> "invalidate"
Trivial fix to spelling mistake in ubi_err error message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:05:30 +02:00
Ben Dooks
b62fc46217 ubi: pr_err() strings should end with newlines
In build.c, the following pr_err calls should be terminated with
a new-line to avoid other messages being concatenated onto the end.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:05:30 +02:00
Ben Dooks
a51b7ccf3b ubi: pr_err() strings should end with newlines
In ubi_attach_mtd_dev() the pr_err() calls should have their
messgaes terminated with a new-line to avoid other messages
being concatenated onto the end.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:05:30 +02:00
Ben Dooks
278f31a70d ubi: pr_err() strings should end with newlines
The ubi_init() function has a few error paths that use the
pr_err() to output errors. These should have new lines on
them as pr_err() does not automatically do this.

This fixes issues where if multiple mtd fail to bind to
ubi the console output starts wrapping around.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:05:30 +02:00
Linus Torvalds
46c1e79fee Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "A handful of tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf stat: Wait for the correct child
  perf tools: Support running perf binaries with a dash in their name
  perf config: Check not only section->from_system_config but also item's
  perf ui progress: Fix progress update
  perf ui progress: Make sure we always define step value
  perf tools: Open perf.data with O_CLOEXEC flag
  tools lib api: Fix make DEBUG=1 build
  perf tests: Fix compile when libunwind's unwind.h is available
  tools include linux: Guard against redefinition of some macros
2017-09-13 12:24:20 -07:00
Linus Torvalds
ec846ecd63 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
 "Three CPU hotplug related fixes and a debugging improvement"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/debug: Add debugfs knob for "sched_debug"
  sched/core: WARN() when migrating to an offline CPU
  sched/fair: Plug hole between hotplug and active_load_balance()
  sched/fair: Avoid newidle balance for !active CPUs
2017-09-13 12:22:32 -07:00
Linus Torvalds
b5df1b3a56 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "The main changes are the PCID fixes from Andy, but there's also two
  hyperv fixes and two paravirt updates"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/hyper-v: Remove duplicated HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED definition
  x86/hyper-V: Allocate the IDT entry early in boot
  paravirt: Switch maintainer
  x86/paravirt: Remove no longer used paravirt functions
  x86/mm/64: Initialize CR4.PCIDE early
  x86/hibernate/64: Mask off CR3's PCID bits in the saved CR3
  x86/mm: Get rid of VM_BUG_ON in switch_tlb_irqs_off()
2017-09-13 11:56:16 -07:00
Linus Torvalds
9888e4d483 OpenRISC patches for 4.14
Just one thing here:
  - Fix warning for upcoming work to remove linux/vmalloc.h from
    asm-generic/io.h
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Merge tag 'openrisc-for-linus' of git://github.com/openrisc/linux

Pull OpenRISC fixlet from Stafford Horne:
 "Fix warning for upcoming work to remove linux/vmalloc.h from
  asm-generic/io.h"

* tag 'openrisc-for-linus' of git://github.com/openrisc/linux:
  openrisc: add forward declaration for struct vm_area_struct
2017-09-13 11:52:18 -07:00
Linus Torvalds
4791bcccf8 Modules updates for v4.14
Summary of modules changes for the 4.14 merge window:
 
 - Minor code cleanups and fixes
 
 - modpost: avoid building modules that have names that exceed the size
   of the name field in struct module
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull modules updates from Jessica Yu:
 "Summary of modules changes for the 4.14 merge window:

   - minor code cleanups and fixes

   - modpost: avoid building modules that have names that exceed the
     size of the name field in struct module"

* tag 'modules-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Remove const attribute from alias for MODULE_DEVICE_TABLE
  module: fix ddebug_remove_module()
  modpost: abort if module name is too long
2017-09-13 11:28:19 -07:00
Linus Torvalds
3882a734c1 Fix up MAINTAINERS file sorting
Another merge window, another MAINTAINERS file disaster.

People have serious problems with the alphabet and sorting, and poor
Jérôme Glisse and Radim Krčmář get their names mangled by locale issues,
turning them into some mangled mess (probably others do too, but those
two stood out when sorting things again).

And we now have two copies of the same 'AS3645A LED FLASH CONTROLLER
DRIVER' in the tree and in the MAINTAINERS file, but that's a separate
issue - the duplication is real, and I left them as two entries for the
same name.

This does not try to sort the actual section pattern entries, although I
may end up doing that later.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-13 11:18:19 -07:00
Linus Torvalds
f60a2abfdb The diff is dominated by the Allwinner A10/A20 SoCs getting converted to
the sunxi-ng framework. Otherwise, the heavy hitters are various drivers
 for SoCs like AT91, Amlogic, Renesas, and Rockchip. There are some other
 new clk drivers in here too but overall this is just a bunch of clk
 drivers for various different pieces of hardware and a collection of
 non-critical fixes for clk drivers.
 
 New Drivers:
  - Allwinner R40 SoCs
  - Renesas R-Car Gen3 USB 2.0 clock selector PHY
  - Atmel AT91 audio PLL
  - Uniphier PXs3 SoCs
  - ARC HSDK Board PLLs
  - AXS10X Board PLLs
  - STMicroelectronics STM32H743 SoCs
 
 Removed Drivers:
  - Non-compiling mb86s7x support
 
 Updates:
  - Allwinner A10/A20 SoCs converted to sunxi-ng framework
  - Allwinner H3 CPU clk fixes
  - Renesas R-Car D3 SoC
  - Renesas V2H and M3-W modules
  - Samsung Exynos5420/5422/5800 audio fixes
  - Rockchip fractional clk approximation fixes
  - Rockchip rk3126 SoC support within the rk3128 driver
  - Amlogic gxbb CEC32 and sd_emmc clks
  - Amlogic meson8b reset controller support
  - IDT VersaClock 5P49V5925/5P49V6901 support
  - Qualcomm MSM8996 SMMU clks
  - Various 'const' applications for struct clk_ops
  - si5351 PLL reset bugfix
  - Uniphier audio on LD11/LD20 and ethernet support on LD11/LD20/Pro4/PXs2
  - Assorted Tegra clk driver fixes
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "The diff is dominated by the Allwinner A10/A20 SoCs getting converted
  to the sunxi-ng framework. Otherwise, the heavy hitters are various
  drivers for SoCs like AT91, Amlogic, Renesas, and Rockchip. There are
  some other new clk drivers in here too but overall this is just a
  bunch of clk drivers for various different pieces of hardware and a
  collection of non-critical fixes for clk drivers.

  New Drivers:
   - Allwinner R40 SoCs
   - Renesas R-Car Gen3 USB 2.0 clock selector PHY
   - Atmel AT91 audio PLL
   - Uniphier PXs3 SoCs
   - ARC HSDK Board PLLs
   - AXS10X Board PLLs
   - STMicroelectronics STM32H743 SoCs

  Removed Drivers:
   - Non-compiling mb86s7x support

  Updates:
   - Allwinner A10/A20 SoCs converted to sunxi-ng framework
   - Allwinner H3 CPU clk fixes
   - Renesas R-Car D3 SoC
   - Renesas V2H and M3-W modules
   - Samsung Exynos5420/5422/5800 audio fixes
   - Rockchip fractional clk approximation fixes
   - Rockchip rk3126 SoC support within the rk3128 driver
   - Amlogic gxbb CEC32 and sd_emmc clks
   - Amlogic meson8b reset controller support
   - IDT VersaClock 5P49V5925/5P49V6901 support
   - Qualcomm MSM8996 SMMU clks
   - Various 'const' applications for struct clk_ops
   - si5351 PLL reset bugfix
   - Uniphier audio on LD11/LD20 and ethernet support on LD11/LD20/Pro4/PXs2
   - Assorted Tegra clk driver fixes"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (120 commits)
  clk: si5351: fix PLL reset
  ASoC: atmel-classd: remove aclk clock
  ASoC: atmel-classd: remove aclk clock from DT binding
  clk: at91: clk-generated: make gclk determine audio_pll rate
  clk: at91: clk-generated: create function to find best_diff
  clk: at91: add audio pll clock drivers
  dt-bindings: clk: at91: add audio plls to the compatible list
  clk: at91: clk-generated: remove useless divisor loop
  clk: mb86s7x: Drop non-building driver
  clk: ti: check for null return in strrchr to avoid null dereferencing
  clk: Don't write error code into divider register
  clk: uniphier: add video input subsystem clock
  clk: uniphier: add audio system clock
  clk: stm32h7: Add stm32h743 clock driver
  clk: gate: expose clk_gate_ops::is_enabled
  clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()
  clk: uniphier: add PXs3 clock data
  clk: hi6220: change watchdog clock source
  clk: Kconfig: Name RK805 in Kconfig for COMMON_CLK_RK808
  clk: cs2000: Add cs2000_set_saved_rate
  ...
2017-09-13 11:04:14 -07:00
Linus Torvalds
561a8eb3e1 RTC for 4.14
Subsystem:
  - Remove .open() and .release() RTC ops
  - constify i2c_device_id
 
 New driver:
  - Realtek RTD1295
  - Android emulator (goldfish) RTC
 
 Drivers:
  - ds1307: Beginning of a huge cleanup
  - s35390a: handle invalid RTC time
  - sun6i: external oscillator gate support
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Merge tag 'rtc-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Subsystem:
   - remove .open() and .release() RTC ops
   - constify i2c_device_id

  New driver:
   - Realtek RTD1295
   - Android emulator (goldfish) RTC

  Drivers:
   - ds1307: Beginning of a huge cleanup
   - s35390a: handle invalid RTC time
   - sun6i: external oscillator gate support"

* tag 'rtc-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (40 commits)
  rtc: ds1307: use octal permissions
  rtc: ds1307: fix braces
  rtc: ds1307: fix alignments and blank lines
  rtc: ds1307: use BIT
  rtc: ds1307: use u32
  rtc: ds1307: use sizeof
  rtc: ds1307: remove regs member
  rtc: Add Realtek RTD1295
  dt-bindings: rtc: Add Realtek RTD1295
  rtc: sun6i: Add support for the external oscillator gate
  rtc: goldfish: Add RTC driver for Android emulator
  dt-bindings: Add device tree binding for Goldfish RTC driver
  rtc: ds1307: add basic support for ds1341 chip
  rtc: ds1307: remove member nvram_offset from struct ds1307
  rtc: ds1307: factor out offset to struct chip_desc
  rtc: ds1307: factor out rtc_ops to struct chip_desc
  rtc: ds1307: factor out irq_handler to struct chip_desc
  rtc: ds1307: improve irq setup
  rtc: ds1307: constify struct chip_desc variables
  rtc: ds1307: improve trickle charger initialization
  ...
2017-09-13 10:56:00 -07:00
Linus Torvalds
2818d0d759 sound fixes for 4.14-rc1
Most of the commits are trivial cleanup patches, while one commit
 is a significant fix for the race at ALSA sequencer that was spotted
 by syzkaller.
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Merge tag 'sound-fix-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Most of the commits are trivial cleanup patches, while one commit is a
  significant fix for the race at ALSA sequencer that was spotted by
  syzkaller"

* tag 'sound-fix-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: seq: Cancel pending autoload work at unbinding device
  ALSA: firewire: Use common error handling code in snd_motu_stream_start_duplex()
  ALSA: asihpi: Kill BUG_ON() usages
  ALSA: core: Use %pS printk format for direct addresses
  ALSA: ymfpci: Use common error handling code in snd_ymfpci_create()
  ALSA: ymfpci: Use common error handling code in snd_card_ymfpci_probe()
  ALSA: 6fire: Use common error handling code in usb6fire_chip_probe()
  ALSA: usx2y: Use common error handling code in submit_urbs()
  ALSA: us122l: Use common error handling code in us122l_create_card()
  ALSA: hdspm: Use common error handling code in snd_hdspm_probe()
  ALSA: rme9652: Use common code in hdsp_get_iobox_version()
  ALSA: maestro3: Use common error handling code in two functions
2017-09-13 10:50:06 -07:00
Linus Torvalds
cc4238bd16 SCSI misc on 20170913
A tiny update: one patch corrects a Kconfig problem with the shift of
 the SAS SMP code to BSG and the other removes a vestige of user space
 target mode.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "A tiny update: one patch corrects a Kconfig problem with the shift of
  the SAS SMP code to BSG and the other removes a vestige of user space
  target mode"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: scsi_transport_sas: select BLK_DEV_BSGLIB
  scsi: Remove Scsi_Host.uspace_req_q
2017-09-13 10:47:14 -07:00