Commit graph

753081 commits

Author SHA1 Message Date
nixiaoming
ac5db1fc89 scripts: Fixed printf format mismatch
scripts/kallsyms.c: function write_src:
"printf", the #1 format specifier "d" need arg type "int",
but the according arg "table_cnt" has type "unsigned int"

scripts/recordmcount.c: function do_file:
"fprintf", the #1 format specifier "d" need arg type "int",
but the according arg "(*w2)(ehdr->e_machine)" has type "unsigned int"

scripts/recordmcount.h: function find_secsym_ndx:
"fprintf", the #1 format specifier "d" need arg type "int",
but the according arg "txtndx" has type "unsigned int"

Signed-off-by: nixiaoming <nixiaoming@huawei.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-29 22:04:12 +09:00
Joey Pabalinas
656c107770 scripts/tags.sh: use find for $ALLSOURCE_ARCHS generation
The current code includes 'Kconfig' in ALLSOURCE_ARCHS, but
it should not (Kconfig is not an architecture). Replace this
with a find-generated string and directly assign it to
$ALLSOURCE_ARCHS. The find_all_archs() function is no longer
needed for a one-liner with obvious semantics, so inline the
arch generation into the surrounding conditional.

Signed-off-by: Joey Pabalinas <joeypabalinas@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-22 23:00:24 +09:00
Julia Lawall
21195f8e9a coccinelle: deref_null: improve performance
Move rules looking for some special cases of safe dereferences before
the collection of NULL-tested values.  The special cases are fairly
rare, but somewhat costly to find, because isomorphisms create many
variants of the rules.  There is thus no need to search for them over
and over for each NULL tested expression.  Collecting them just once
is sufficient and more efficient.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-22 23:00:23 +09:00
Julia Lawall
32d0572a75 coccinelle: mini_lock: improve performance
Replace <+... ...+> by ... when any.  <+... ...+> is slow, and in some
obscure cases involving backward jumps it doesn't force the unlock to
actually come after the end of the if.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-22 23:00:23 +09:00
Nicholas Piggin
4c1d9bb0b5 powerpc: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selected
This requires further changes to linker script to KEEP some tables
and wildcard compiler generated sections into the right place. This
includes pp32 modifications from Christophe Leroy.

When compiling powernv_defconfig with this option, the resulting
kernel is almost 400kB smaller (and still boots):

    text      data       bss        dec   filename
11827621   4810490   1341080   17979191   vmlinux
11752437   4598858   1338776   17690071   vmlinux.dcde

Mathieu's numbers for custom Mac Mini G4 config has almost 200kB
saving. It also had some increase in vmlinux size for as-yet
unknown reasons.

    text      data       bss        dec   filename
 7461457   2475122   1428064   11364643   vmlinux
 7386425   2364370   1425432   11176227   vmlinux.dcde

Tested-by: Christophe Leroy <christophe.leroy@c-s.fr> [8xx]
Tested-by: Mathieu Malaterre <malat@debian.org> [32-bit powermac]
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:45:01 +09:00
Nicholas Piggin
5d20ee3192 kbuild: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selectable if enabled
Architectures that are capable can select
HAVE_LD_DEAD_CODE_DATA_ELIMINATION to enable selection of that
option (as an EXPERT kernel option).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:45:01 +09:00
Nicholas Piggin
6ca8d9433d kbuild: LD_DEAD_CODE_DATA_ELIMINATION no -ffunction-sections/-fdata-sections for module build
Modules do not tend to cope with -ffunction-sections, even though they
do not link with -gc-sections. It may be possible for unused symbols to
be trimmed from modules, but in general that would take much more work
in architecture module linker scripts.

For now, enable these only for kernel build.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:45:00 +09:00
Nicholas Piggin
266ff2a8f5 kbuild: Fix asm-generic/vmlinux.lds.h for LD_DEAD_CODE_DATA_ELIMINATION
KEEP more tables, and add the function/data section wildcard to more
section selections.

This is a little ad-hoc at the moment, but kernel code should be moved
to consistently use .text..x (note: double dots) for explicit sections
and all references to it in the linker script can be made with
TEXT_MAIN, and similarly for other sections.

For now, let's see if major architectures move to enabling this option
then we can do some refactoring passes. Otherwise if it remains unused
or superseded by LTO, this may not be required.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:45:00 +09:00
Masahiro Yamada
8b1857436b modpost: constify *modname function argument where possible
Neither find_module() nor read_symbols() does change *modname.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:45:00 +09:00
Masahiro Yamada
074a04f572 modpost: remove redundant is_vmlinux() test
The second test of is_vmlinux() is redundant.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:44:59 +09:00
Masahiro Yamada
d62c476521 modpost: use strstarts() helper more widely
Currently, strstarts() is only used in export_from_secname().
Use it more widely to improve the code readability.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:44:59 +09:00
Masahiro Yamada
bca2ccee4c modpost: pass struct elf_info pointer to get_modinfo()
get_(next_)modinfo takes a pointer and length pair of the .modinfo
section.  Instead, pass struct elf_info pointer to reduce the number
of function arguments.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:44:58 +09:00
Masahiro Yamada
a6b04f0ed5 checkpatch: remove VMLINUX_SYMBOL() check
Now that VMLINUX_SYMBOL() is no-op and being removed, let's stop
checking VMLINUX_SYMBOL().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:44:58 +09:00
Masahiro Yamada
a621438500 vmlinux.lds.h: remove no-op macro VMLINUX_SYMBOL()
Now that VMLINUX_SYMBOL() is no-op, clean up the linker script.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:44:58 +09:00
Masahiro Yamada
704db5433f kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a9760 ("arch: remove blackfin port"),
commit bb6fb6dfcc ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX.
Clean up the rest of scripts, and remove the Kconfig entry.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:44:57 +09:00
Masahiro Yamada
94e58e0ac3 export.h: remove code for prefixing symbols with underscore
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a9760 ("arch: remove blackfin port"),
commit bb6fb6dfcc ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX.
Clean up the export.h headers.  I am keeping VMLINUX_SYMBOL() and
VMLINUX_SYMBOL_STR() because they are widely used.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:44:57 +09:00
Masahiro Yamada
5a144a1acd depmod.sh: remove symbol prefix support
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a9760 ("arch: remove blackfin port"),
commit bb6fb6dfcc ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX,
hence the last argument of scripts/depmod.sh can be removed.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:44:52 +09:00
Masahiro Yamada
534c9f2ec4 kallsyms: remove symbol prefix support
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a9760 ("arch: remove blackfin port"),
commit bb6fb6dfcc ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX,
hence the --symbol-prefix option is unnecessary.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:43:36 +09:00
Masahiro Yamada
74d9317161 genksyms: remove symbol prefix support
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a9760 ("arch: remove blackfin port"),
commit bb6fb6dfcc ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX,
hence the -s (--symbol-prefix) option is unnecessary.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:43:35 +09:00
Masahiro Yamada
b2c5cdcfd4 modpost: remove symbol prefix support
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a9760 ("arch: remove blackfin port"),
commit bb6fb6dfcc ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX,
hence VMLINUX_SYMBOL_STR(foo) can be simplify replaced with "foo".

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2018-05-17 22:43:33 +09:00
Riku Voipio
d5940c60e0 kbuild: deb-pkg improve maintainer address generation
There is multiple issues with the genaration of maintainer string

It uses DEBEMAIL and EMAIL enviroment variables, which may contain angle brackets,
creating invalid maintainer strings. The documented KBUILD_BUILD_USER and
KBUILD_BUILD_HOST variables are not used. Undocumented and uncommon NAME
variable is used. Refactor the Maintainer string to:

- use EMAIL or DEBEMAIL directly if they are in form "name <user@host>"
- use KBUILD_BUILD_USER and KBUILD_BUILD_HOST if set before falling
  back to autodetection
- no longer use NAME variable or the useless Anonymous string

The logic is switched from multiline if/then/fi statements to compact
shell variable substition commands.

Reported-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-17 22:38:15 +09:00
Nicolas Pitre
b3aa58d2e8 fixdep: suppress consecutive / from file paths in dependency list files
Underscores in symbol names are translated into slashes for path names.
Filesystems treat consecutive slashes as if there was only one, so
let's do the same in the dependency list for easier grepping, etc.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-07 21:40:39 +09:00
Linus Torvalds
75bc37fefc Linux 4.17-rc4 2018-05-06 16:57:38 -10:00
Linus Torvalds
701e39d051 KVM fixes for v4.17-rc4
ARM:
  - Fix proxying of GICv2 CPU interface accesses
  - Fix crash when switching to BE
  - Track source vcpu git GICv2 SGIs
  - Fix an outdated bit of documentation
 
 x86:
  - Speed up injection of expired timers (for stable)
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pll KVM fixes from Radim Krčmář:
 "ARM:
   - Fix proxying of GICv2 CPU interface accesses
   - Fix crash when switching to BE
   - Track source vcpu git GICv2 SGIs
   - Fix an outdated bit of documentation

  x86:
   - Speed up injection of expired timers (for stable)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: remove APIC Timer periodic/oneshot spikes
  arm64: vgic-v2: Fix proxying of cpuif access
  KVM: arm/arm64: vgic_init: Cleanup reference to process_maintenance
  KVM: arm64: Fix order of vcpu_write_sys_reg() arguments
  KVM: arm/arm64: vgic: Fix source vcpu issues for GICv2 SGI
2018-05-06 05:46:29 -10:00
Linus Torvalds
772d4f84c6 IOMMU Fixes for Linux v4.17-rc4
Fixes come with:
 
 	* Fix for compile warning in AMD IOMMU driver with irq remapping
 	  disabled
 
 	* Fix for VT-d interrupt remapping and invalidation size (caused
 	  a BUG_ON when trying to invalidate more than 4GB)
 
 	* Build fix and a regression fix for broken graphics with old
 	  DTS for the rockchip iommu driver
 
 	* A revert in PCI window reservation code which fixes a
 	  regression with VFIO.
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Merge tag 'iommu-fixes-v4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:

 - fix a compile warning in the AMD IOMMU driver with irq remapping
   disabled

 - fix for VT-d interrupt remapping and invalidation size (caused a
   BUG_ON when trying to invalidate more than 4GB)

 - build fix and a regression fix for broken graphics with old DTS for
   the rockchip iommu driver

 - a revert in the PCI window reservation code which fixes a regression
   with VFIO.

* tag 'iommu-fixes-v4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu: rockchip: fix building without CONFIG_OF
  iommu/vt-d: Use WARN_ON_ONCE instead of BUG_ON in qi_flush_dev_iotlb()
  iommu/vt-d: fix shift-out-of-bounds in bug checking
  iommu/dma: Move PCI window region reservation back into dma specific path.
  iommu/rockchip: Make clock handling optional
  iommu/amd: Hide unused iommu_table_lock
  iommu/vt-d: Fix usage of force parameter in intel_ir_reconfigure_irte()
2018-05-06 05:42:24 -10:00
Linus Torvalds
9c48eb6aab Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Thomas Gleixner:
 "Unbreak the CPUID CPUID_8000_0008_EBX reload which got dropped when
  the evaluation of physical and virtual bits which uses the same CPUID
  leaf was moved out of get_cpu_cap()"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Restore CPUID_8000_0008_EBX reload
2018-05-06 05:37:24 -10:00
Linus Torvalds
fe282c609d Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull clocksource fixes from Thomas Gleixner:
 "The recent addition of the early TSC clocksource breaks on machines
  which have an unstable TSC because in case that TSC is disabled, then
  the clocksource selection logic falls back to the early TSC which is
  obviously bogus.

  That also unearthed a few robustness issues in the clocksource
  derating code which are addressed as well"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: Rework stale comment
  clocksource: Consistent de-rate when marking unstable
  x86/tsc: Fix mark_tsc_unstable()
  clocksource: Initialize cs->wd_list
  clocksource: Allow clocksource_mark_unstable() on unregistered clocksources
  x86/tsc: Always unregister clocksource_tsc_early
2018-05-06 05:35:23 -10:00
Linus Torvalds
03b5f0c138 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
 "A single fix to prevent false positives in the spurious interrupt
  detector when more than a single demultiplex register is evaluated in
  the Qualcom irq combiner driver"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/qcom: Fix check for spurious interrupts
2018-05-06 05:34:06 -10:00
Linus Torvalds
ee946c36be platform-drivers-x86 for v4.17-2
We missed a case in the Dell config dependencies resulting in a possible bad
 configuration, resolve it by giving up on trying to keep DELL_LAPTOP visible in
 the menu and make it depend on DELL_SMBIOS.
 
 Fix a null pointer dereference at module unload for the asus-wireless driver.
 
 The following is an automated git shortlog grouped by driver:
 
 Kconfig:
  -  Fix dell-laptop dependency chain.
 
 asus-wireless:
  -  Fix NULL pointer dereference
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Merge tag 'platform-drivers-x86-v4.17-2' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver fixes from Darren Hart:

 - We missed a case in the Dell config dependencies resulting in a
   possible bad configuration, resolve it by giving up on trying to keep
   DELL_LAPTOP visible in the menu and make it depend on DELL_SMBIOS.

 - Fix a null pointer dereference at module unload for the asus-wireless
   driver.

* tag 'platform-drivers-x86-v4.17-2' of git://git.infradead.org/linux-platform-drivers-x86:
  platform/x86: Kconfig: Fix dell-laptop dependency chain.
  platform/x86: asus-wireless: Fix NULL pointer dereference
2018-05-05 17:30:58 -10:00
Linus Torvalds
8e95cb336d USB fixes for 4.17-rc4
Here are some USB driver fixes for 4.17-rc4.
 
 The majority of them are some USB gadget fixes that missed my last pull
 request.  The "largest" patch in here is a fix for the old visor driver
 that syzbot found 6 months or so ago and I finally remembered to fix it.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some USB driver fixes for 4.17-rc4.

  The majority of them are some USB gadget fixes that missed my last
  pull request. The "largest" patch in here is a fix for the old visor
  driver that syzbot found 6 months or so ago and I finally remembered
  to fix it.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  Revert "usb: host: ehci: Use dma_pool_zalloc()"
  usb: typec: tps6598x: handle block reads separately with plain-I2C adapters
  usb: typec: tcpm: Release the role mux when exiting
  USB: Accept bulk endpoints with 1024-byte maxpacket
  xhci: Fix use-after-free in xhci_free_virt_device
  USB: serial: visor: handle potential invalid device configuration
  USB: serial: option: adding support for ublox R410M
  usb: musb: trace: fix NULL pointer dereference in musb_g_tx()
  usb: musb: host: fix potential NULL pointer dereference
  usb: gadget: composite Allow for larger configuration descriptors
  usb: dwc3: gadget: Fix list_del corruption in dwc3_ep_dequeue
  usb: dwc3: gadget: dwc3_gadget_del_and_unmap_request() can be static
  usb: dwc2: pci: Fix error return code in dwc2_pci_probe()
  usb: dwc2: WA for Full speed ISOC IN in DDMA mode.
  usb: dwc2: dwc2_vbus_supply_init: fix error check
  usb: gadget: f_phonet: fix pn_net_xmit()'s return type
2018-05-05 17:28:08 -10:00
Anthoine Bourgeois
ecf08dad72 KVM: x86: remove APIC Timer periodic/oneshot spikes
Since the commit "8003c9ae204e: add APIC Timer periodic/oneshot mode VMX
preemption timer support", a Windows 10 guest has some erratic timer
spikes.

Here the results on a 150000 times 1ms timer without any load:
	  Before 8003c9ae20 | After 8003c9ae20
Max           1834us          |  86000us
Mean          1100us          |   1021us
Deviation       59us          |    149us
Here the results on a 150000 times 1ms timer with a cpu-z stress test:
	  Before 8003c9ae20 | After 8003c9ae20
Max          32000us          | 140000us
Mean          1006us          |   1997us
Deviation      140us          |  11095us

The root cause of the problem is starting hrtimer with an expiry time
already in the past can take more than 20 milliseconds to trigger the
timer function.  It can be solved by forward such past timers
immediately, rather than submitting them to hrtimer_start().
In case the timer is periodic, update the target expiration and call
hrtimer_start with it.

v2: Check if the tsc deadline is already expired. Thank you Mika.
v3: Execute the past timers immediately rather than submitting them to
hrtimer_start().
v4: Rearm the periodic timer with advance_periodic_target_expiration() a
simpler version of set_target_expiration(). Thank you Paolo.

Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@blade-group.com>
8003c9ae20 ("KVM: LAPIC: add APIC Timer periodic/oneshot mode VMX preemption timer support")
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2018-05-05 23:09:39 +02:00
Radim Krčmář
f3351c609b KVM/arm fixes for 4.17, take #2
- Fix proxying of GICv2 CPU interface accesses
 - Fix crash when switching to BE
 - Track source vcpu git GICv2 SGIs
 - Fix an outdated bit of documentation
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Merge tag 'kvmarm-fixes-for-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm

KVM/arm fixes for 4.17, take #2

- Fix proxying of GICv2 CPU interface accesses
- Fix crash when switching to BE
- Track source vcpu git GICv2 SGIs
- Fix an outdated bit of documentation
2018-05-05 23:05:31 +02:00
Linus Torvalds
c1c07416cd Kbuild fixes for v4.17
- remove state comment in modpost
 
 - extend MAINTAINERS entry to cover modpost and more makefiles
 
 - fix missed building of SANCOV gcc-plugin
 
 - replace left-over 'bison' with $(YACC)
 
 - display short log when generating parer of genksyms
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Merge tag 'kbuild-fixes-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - remove state comment in modpost

 - extend MAINTAINERS entry to cover modpost and more makefiles

 - fix missed building of SANCOV gcc-plugin

 - replace left-over 'bison' with $(YACC)

 - display short log when generating parer of genksyms

* tag 'kbuild-fixes-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  genksyms: fix typo in parse.tab.{c,h} generation rules
  kbuild: replace hardcoded bison in cmd_bison_h with $(YACC)
  gcc-plugins: fix build condition of SANCOV plugin
  MAINTAINERS: Update Kbuild entry with a few paths
  modpost: delete stale comment
2018-05-04 21:15:25 -10:00
Linus Torvalds
4a7a772986 A handful of fixes for the stm32mp1 clk driver came in during the merge
window for the driver that got merged in the merge window. Plus a
 warning fix for unused PM ops and a couple fixes for the meson clk
 driver clk names that went unnoticed with the regmap rework. There's
 also another fix in here for the mux rounding flag which wasn't doing
 what it said it did, but now it does.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes froom Stephen Boyd:
 "A handful of fixes for the stm32mp1 clk driver came in during the
  merge window for the driver that got merged in the merge window.

  Plus a warning fix for unused PM ops and a couple fixes for the meson
  clk driver clk names that went unnoticed with the regmap rework.

  There's also another fix in here for the mux rounding flag which
  wasn't doing what it said it did, but now it does"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: meson: meson8b: fix meson8b_cpu_clk parent clock name
  clk: meson: meson8b: fix meson8b_fclk_div3_div clock name
  clk: meson: drop meson_aoclk_gate_regmap_ops
  clk: meson: honor CLK_MUX_ROUND_CLOSEST in clk_regmap
  clk: honor CLK_MUX_ROUND_CLOSEST in generic clk mux
  clk: cs2000: mark resume function as __maybe_unused
  clk: stm32mp1: remove ck_apb_dbg clock
  clk: stm32mp1: set stgen_k clock as critical
  clk: stm32mp1: add missing tzc2 clock
  clk: stm32mp1: fix SAI3 & SAI4 clocks
  clk: stm32mp1: remove unused dfsdm_src[] const
  clk: stm32mp1: add missing static
2018-05-04 21:12:06 -10:00
Linus Torvalds
f93314732f remoteproc and rpmsg fixes for v4.17
Fixes screw up when reversing boolean for rproc_stop(), add missing of
 node dereferences and add missing MODULE_ALIAS in rpmsg_char.
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Merge tag 'rproc-v4.17-1' of git://github.com/andersson/remoteproc

Pull remoteproc and rpmsg fixes from Bjorn Andersson:

 - fix screw-up when reversing boolean for rproc_stop()

 - add missing OF node refcounting dereferences

 - add missing MODULE_ALIAS in rpmsg_char

* tag 'rproc-v4.17-1' of git://github.com/andersson/remoteproc:
  rpmsg: added MODULE_ALIAS for rpmsg_char
  remoteproc: qcom: Fix potential device node leaks
  remoteproc: fix crashed parameter logic on stop call
2018-05-04 21:07:43 -10:00
Linus Torvalds
c12fd0fe0c vmwgfx, i915, vc4, vga dac fixes
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Merge tag 'drm-fixes-for-v4.17-rc4' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "vmwgfx, i915, vc4, vga dac fixes.

  This seems eerily quiet, so I expect it will explode next week or
  something.

  One i915 model firmware, two vmwgfx fixes, one vc4 fix and one bridge
  leak fix"

* tag 'drm-fixes-for-v4.17-rc4' of git://people.freedesktop.org/~airlied/linux:
  drm/bridge: vga-dac: Fix edid memory leak
  drm/vc4: Make sure vc4_bo_{inc,dec}_usecnt() calls are balanced
  drm/i915/glk: Add MODULE_FIRMWARE for Geminilake
  drm/vmwgfx: Fix a buffer object leak
  drm/vmwgfx: Clean up fbdev modeset locking
2018-05-04 21:05:12 -10:00
Linus Torvalds
4b293907d3 Some of the files in the tracing directory show file mode 0444
when they are writable by root. To fix the confusion, they should
 be 0644. Note, either case root can still write to them.
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Merge tag 'trace-v4.17-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Some of the files in the tracing directory show file mode 0444 when
  they are writable by root. To fix the confusion, they should be 0644.
  Note, either case root can still write to them.

  Zhengyuan asked why I never applied that patch (the first one is from
  2014!). I simply forgot about it. /me lowers head in shame"

* tag 'trace-v4.17-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix the file mode of stack tracer
  ftrace: Have set_graph_* files have normal file modes
2018-05-04 20:57:28 -10:00
Linus Torvalds
eb4f959b26 First pull request for 4.17-rc
- Various build fixes (USER_ACCESS=m and ADDR_TRANS turned off)
 - SPDX license tag cleanups (new tag Linux-OpenIB)
 - RoCE GID fixes related to default GIDs
 - Various fixes to: cxgb4, uverbs, cma, iwpm, rxe, hns (big batch),
   mlx4, mlx5, and hfi1 (medium batch)
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Doug Ledford:
 "This is our first pull request of the rc cycle. It's not that it's
  been overly quiet, we were just waiting on a few things before sending
  this off.

  For instance, the 6 patch series from Intel for the hfi1 driver had
  actually been pulled in on Tuesday for a Wednesday pull request, only
  to have Jason notice something I missed, so we held off for some
  testing, and then on Thursday had to respin the series because the
  very first patch needed a minor fix (unnecessary cast is all).

  There is a sizable hns patch series in here, as well as a reasonably
  largish hfi1 patch series, then all of the lines of uapi updates are
  just the change to the new official Linux-OpenIB SPDX tag (a bunch of
  our files had what amounts to a BSD-2-Clause + MIT Warranty statement
  as their license as a result of the initial code submission years ago,
  and the SPDX folks decided it was unique enough to warrant a unique
  tag), then the typical mlx4 and mlx5 updates, and finally some cxgb4
  and core/cache/cma updates to round out the bunch.

  None of it was overly large by itself, but in the 2 1/2 weeks we've
  been collecting patches, it has added up :-/.

  As best I can tell, it's been through 0day (I got a notice about my
  last for-next push, but not for my for-rc push, but Jason seems to
  think that failure messages are prioritized and success messages not
  so much). It's also been through linux-next. And yes, we did notice in
  the context portion of the CMA query gid fix patch that there is a
  dubious BUG_ON() in the code, and have plans to audit our BUG_ON usage
  and remove it anywhere we can.

  Summary:

   - Various build fixes (USER_ACCESS=m and ADDR_TRANS turned off)

   - SPDX license tag cleanups (new tag Linux-OpenIB)

   - RoCE GID fixes related to default GIDs

   - Various fixes to: cxgb4, uverbs, cma, iwpm, rxe, hns (big batch),
     mlx4, mlx5, and hfi1 (medium batch)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (52 commits)
  RDMA/cma: Do not query GID during QP state transition to RTR
  IB/mlx4: Fix integer overflow when calculating optimal MTT size
  IB/hfi1: Fix memory leak in exception path in get_irq_affinity()
  IB/{hfi1, rdmavt}: Fix memory leak in hfi1_alloc_devdata() upon failure
  IB/hfi1: Fix NULL pointer dereference when invalid num_vls is used
  IB/hfi1: Fix loss of BECN with AHG
  IB/hfi1 Use correct type for num_user_context
  IB/hfi1: Fix handling of FECN marked multicast packet
  IB/core: Make ib_mad_client_id atomic
  iw_cxgb4: Atomically flush per QP HW CQEs
  IB/uverbs: Fix kernel crash during MR deregistration flow
  IB/uverbs: Prevent reregistration of DM_MR to regular MR
  RDMA/mlx4: Add missed RSS hash inner header flag
  RDMA/hns: Fix a couple misspellings
  RDMA/hns: Submit bad wr
  RDMA/hns: Update assignment method for owner field of send wqe
  RDMA/hns: Adjust the order of cleanup hem table
  RDMA/hns: Only assign dqpn if IB_QP_PATH_DEST_QPN bit is set
  RDMA/hns: Remove some unnecessary attr_mask judgement
  RDMA/hns: Only assign mtu if IB_QP_PATH_MTU bit is set
  ...
2018-05-04 20:51:10 -10:00
Linus Torvalds
2f50037a1c for-linus-20180504
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Merge tag 'for-linus-20180504' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A collection of fixes that should to into this release. This contains:

   - Set of bcache fixes from Coly, fixing regression in patches that
     went into this series.

   - Set of NVMe fixes by way of Keith.

   - Set of bdi related fixes, one from Jan and two from Tetsuo Handa,
     fixing various issues around device addition/removal.

   - Two block inflight fixes from Omar, fixing issues around the
     transition to using tags for blk-mq inflight accounting that we
     did a few releases ago"

* tag 'for-linus-20180504' of git://git.kernel.dk/linux-block:
  bdi: Fix oops in wb_workfn()
  nvmet: switch loopback target state to connecting when resetting
  nvme/multipath: Fix multipath disabled naming collisions
  nvme/multipath: Disable runtime writable enabling parameter
  nvme: Set integrity flag for user passthrough commands
  nvme: fix potential memory leak in option parsing
  bdi: Fix use after free bug in debugfs_remove()
  bdi: wake up concurrent wb_shutdown() callers.
  bcache: use pr_info() to inform duplicated CACHE_SET_IO_DISABLE set
  bcache: set dc->io_disable to true in conditional_stop_bcache_device()
  bcache: add wait_for_kthread_stop() in bch_allocator_thread()
  bcache: count backing device I/O error for writeback I/O
  bcache: set CACHE_SET_IO_DISABLE in bch_cached_dev_error()
  bcache: store disk name in struct cache and struct cached_dev
  blk-mq: fix sysfs inflight counter
  blk-mq: count allocated but not started requests in iostats inflight
2018-05-04 20:41:44 -10:00
Linus Torvalds
2e171ffcdf Changes since last update:
- Cap the maximum length of a deduplication request at MAX_RW_COUNT/2
   to avoid kernel livelock due to excessively large IO requests.
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Merge tag 'xfs-4.17-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "I've got one more bug fix for xfs for 4.17-rc4, which caps the amount
  of data we try to handle in one dedupe request so that userspace can't
  livelock the kernel.

  This series has been run through a full xfstests run during the week
  and through a quick xfstests run against this morning's master, with
  no ajor failures reported.

  Summary:

  - Cap the maximum length of a deduplication request at MAX_RW_COUNT/2
    to avoid kernel livelock due to excessively large IO requests"

* tag 'xfs-4.17-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: cap the length of deduplication requests
2018-05-04 20:36:50 -10:00
Linus Torvalds
4148d3884a for-4.17-rc3-tag
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Merge tag 'for-4.17-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "Two regression fixes and one fix for stable"

* tag 'for-4.17-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Btrfs: send, fix missing truncate for inode with prealloc extent past eof
  btrfs: Take trans lock before access running trans in check_delayed_ref
  btrfs: Fix wrong first_key parameter in replace_path
2018-05-04 20:32:18 -10:00
Mauro Rossi
0da7e43261 genksyms: fix typo in parse.tab.{c,h} generation rules
'quet' is replaced by 'quiet' in scripts/genksyms/Makefile

Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-05 10:24:53 +09:00
Masahiro Yamada
d59fbbd09d kbuild: replace hardcoded bison in cmd_bison_h with $(YACC)
Commit 73a4f6dbe7 ("kbuild: add LEX and YACC variables") missed to
update cmd_bison_h somehow.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-05 10:24:52 +09:00
Masahiro Yamada
642ef99be9 gcc-plugins: fix build condition of SANCOV plugin
Since commit d677a4d601 ("Makefile: support flag
-fsanitizer-coverage=trace-cmp"), you miss to build the SANCOV
plugin under some circumstances.

  CONFIG_KCOV=y
  CONFIG_KCOV_ENABLE_COMPARISONS=y
  Your compiler does not support -fsanitize-coverage=trace-pc
  Your compiler does not support -fsanitize-coverage=trace-cmp

Under this condition, $(CFLAGS_KCOV) is not empty but contains a
space, so the following ifeq-conditional is false.

    ifeq ($(CFLAGS_KCOV),)

Then, scripts/Makefile.gcc-plugins misses to add sancov_plugin.so to
gcc-plugin-y while the SANCOV plugin is necessary as an alternative
means.

Fixes: d677a4d601 ("Makefile: support flag -fsanitizer-coverage=trace-cmp")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kees Cook <keescook@chromium.org>
2018-05-05 10:24:52 +09:00
Rasmus Villemoes
1cd4023bc3 MAINTAINERS: Update Kbuild entry with a few paths
I managed to send some modpost patches to old addresses of both
Masahiro and Michal, and omitted linux-kbuild from cc, because my
tried and trusted scripts/get_maintainer wrapper failed me. Add the
modpost directory to the MAINTAINERS entry, and while at it make the
Makefile glob match scripts/Makefile itself, and add one matching the
Kbuild.include file as well.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-05 10:24:51 +09:00
Greg Kroah-Hartman
6844dc4272 USB-serial fixes for v4.17-rc4
Here's a fix for a long-standing issue in the visor driver, which could
 have security implications. Included is also a new modem device id.
 
 Both commits have been in linux-next for a couple of days with no
 reported issues.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.17-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.17-rc4

Here's a fix for a long-standing issue in the visor driver, which could
have security implications. Included is also a new modem device id.

Both commits have been in linux-next for a couple of days with no
reported issues.

Signed-off-by: Johan Hovold <johan@kernel.org>
2018-05-04 14:38:32 -07:00
Greg Kroah-Hartman
43b78f1155 Revert "usb: host: ehci: Use dma_pool_zalloc()"
This reverts commit 22072e83eb as it is
broken.

Alan writes:
	What you can't see just from reading the patch is that in both
	cases (ehci->itd_pool and ehci->sitd_pool) there are two
	allocation paths -- the two branches of an "if" statement -- and
	only one of the paths calls dma_pool_[z]alloc.  However, the
	memset is needed for both paths, and so it can't be eliminated.
	Given that it must be present, there's no advantage to calling
	dma_pool_zalloc rather than dma_pool_alloc.

Reported-by: Erick Cafferata <erick@cafferata.me>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-04 14:35:12 -07:00
Mario Limonciello
7fe3fa3b5e platform/x86: Kconfig: Fix dell-laptop dependency chain.
As reported by Randy Dunlap:
>> WARNING: unmet direct dependencies detected for DELL_SMBIOS
>>   Depends on [m]: X86 [=y] && X86_PLATFORM_DEVICES [=y]
>>	&& (DCDBAS [=m] ||
>> DCDBAS [=m]=n) && (ACPI_WMI [=n] || ACPI_WMI [=n]=n)
>>   Selected by [y]:
>>   - DELL_LAPTOP [=y] && X86 [=y] && X86_PLATFORM_DEVICES [=y]
>> && DMI [=y]
>> && BACKLIGHT_CLASS_DEVICE [=y] && (ACPI_VIDEO [=n] ||
>>	ACPI_VIDEO [=n]=n)
>> && (RFKILL [=n] || RFKILL [=n]=n) && SERIO_I8042 [=y]
>>

Right now it's possible to set dell laptop to compile in but this
causes dell-smbios to compile in which breaks if dcdbas is a module.

Dell laptop shouldn't select dell-smbios anymore, but depend on it.

Fixes: 32d7b19bad (platform/x86: dell-smbios: Resolve dependency error on DCDBAS)
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-05-04 22:20:14 +02:00
João Paulo Rechi Vita
9f0a93de91 platform/x86: asus-wireless: Fix NULL pointer dereference
When the module is removed the led workqueue is destroyed in the remove
callback, before the led device is unregistered from the led subsystem.

This leads to a NULL pointer derefence when the led device is
unregistered automatically later as part of the module removal cleanup.
Bellow is the backtrace showing the problem.

  BUG: unable to handle kernel NULL pointer dereference at           (null)
  IP: __queue_work+0x8c/0x410
  PGD 0 P4D 0
  Oops: 0000 [#1] SMP NOPTI
  Modules linked in: ccm edac_mce_amd kvm_amd kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 joydev crypto_simd asus_nb_wmi glue_helper uvcvideo snd_hda_codec_conexant snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel asus_wmi snd_hda_codec cryptd snd_hda_core sparse_keymap videobuf2_vmalloc arc4 videobuf2_memops snd_hwdep input_leds videobuf2_v4l2 ath9k psmouse videobuf2_core videodev ath9k_common snd_pcm ath9k_hw media fam15h_power ath k10temp snd_timer mac80211 i2c_piix4 r8169 mii mac_hid cfg80211 asus_wireless(-) snd soundcore wmi shpchp 8250_dw ip_tables x_tables amdkfd amd_iommu_v2 amdgpu radeon chash i2c_algo_bit drm_kms_helper syscopyarea serio_raw sysfillrect sysimgblt fb_sys_fops ahci ttm libahci drm video
  CPU: 3 PID: 2177 Comm: rmmod Not tainted 4.15.0-5-generic #6+dev94.b4287e5bem1-Endless
  Hardware name: ASUSTeK COMPUTER INC. X555DG/X555DG, BIOS 5.011 05/05/2015
  RIP: 0010:__queue_work+0x8c/0x410
  RSP: 0018:ffffbe8cc249fcd8 EFLAGS: 00010086
  RAX: ffff992ac6810800 RBX: 0000000000000000 RCX: 0000000000000008
  RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff992ac6400e18
  RBP: ffffbe8cc249fd18 R08: ffff992ac6400db0 R09: 0000000000000000
  R10: 0000000000000040 R11: ffff992ac6400dd8 R12: 0000000000002000
  R13: ffff992abd762e00 R14: ffff992abd763e38 R15: 000000000001ebe0
  FS:  00007f318203e700(0000) GS:ffff992aced80000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 0000000000000000 CR3: 00000001c720e000 CR4: 00000000001406e0
  Call Trace:
   queue_work_on+0x38/0x40
   led_state_set+0x2c/0x40 [asus_wireless]
   led_set_brightness_nopm+0x14/0x40
   led_set_brightness+0x37/0x60
   led_trigger_set+0xfc/0x1d0
   led_classdev_unregister+0x32/0xd0
   devm_led_classdev_release+0x11/0x20
   release_nodes+0x109/0x1f0
   devres_release_all+0x3c/0x50
   device_release_driver_internal+0x16d/0x220
   driver_detach+0x3f/0x80
   bus_remove_driver+0x55/0xd0
   driver_unregister+0x2c/0x40
   acpi_bus_unregister_driver+0x15/0x20
   asus_wireless_driver_exit+0x10/0xb7c [asus_wireless]
   SyS_delete_module+0x1da/0x2b0
   entry_SYSCALL_64_fastpath+0x24/0x87
  RIP: 0033:0x7f3181b65fd7
  RSP: 002b:00007ffe74bcbe18 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
  RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3181b65fd7
  RDX: 000000000000000a RSI: 0000000000000800 RDI: 0000555ea2559258
  RBP: 0000555ea25591f0 R08: 00007ffe74bcad91 R09: 000000000000000a
  R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003
  R13: 00007ffe74bcae00 R14: 0000000000000000 R15: 0000555ea25591f0
  Code: 01 00 00 02 0f 85 7d 01 00 00 48 63 45 d4 48 c7 c6 00 f4 fa 87 49 8b 9d 08 01 00 00 48 03 1c c6 4c 89 f7 e8 87 fb ff ff 48 85 c0 <48> 8b 3b 0f 84 c5 01 00 00 48 39 f8 0f 84 bc 01 00 00 48 89 c7
  RIP: __queue_work+0x8c/0x410 RSP: ffffbe8cc249fcd8
  CR2: 0000000000000000
  ---[ end trace 7aa4f4a232e9c39c ]---

Unregistering the led device on the remove callback before destroying the
workqueue avoids this problem.

https://bugzilla.kernel.org/show_bug.cgi?id=196097

Reported-by: Dun Hum <bitter.taste@gmx.com>
Cc: stable@vger.kernel.org
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-05-04 22:20:02 +02:00
Linus Torvalds
625e2001e9 xen: one cleanup for 4.17-rc4
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Merge tag 'for-linus-4.17-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen cleanup from Juergen Gross:
 "One cleanup to remove VLAs from the kernel"

* tag 'for-linus-4.17-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Remove use of VLAs
2018-05-04 05:47:21 -10:00