Matt Fleming [Wed, 24 Sep 2014 10:56:10 +0000 (11:56 +0100)]
x86/efi: Truncate 64-bit values when calling 32-bit OutputString()
If we're executing the 32-bit efi_char16_printk() code path (i.e.
running on top of 32-bit firmware) we know that efi_early->text_output
will be a 32-bit value, even though ->text_output has type u64.
Unfortunately, we currently pass ->text_output directly to
efi_early->call() so for CONFIG_X86_32 the compiler will push a 64-bit
value onto the stack, causing the other parameters to be misaligned.
The way we handle this in the rest of the EFI boot stub is to pass
pointers as arguments to efi_early->call(), which automatically do the
right thing (pointers are 32-bit on CONFIG_X86_32, and we simply ignore
the upper 32-bits of the argument register if running in 64-bit mode
with 32-bit firmware).
This fixes a corruption bug when printing strings from the 32-bit EFI
boot stub.
A number of people are reporting seeing the "setup_efi_pci() failed!"
error message in what used to be a quiet boot,
https://bugzilla.kernel.org/show_bug.cgi?id=81891
The message isn't all that helpful because setup_efi_pci() can return a
non-success error code for a variety of reasons, not all of them fatal.
Let's drop the return code from setup_efi_pci*() altogether, since
there's no way to process it in any meaningful way outside of the inner
__setup_efi_pci*() functions.
Reported-by: Darren Hart <dvhart@linux.intel.com> Reported-by: Josh Boyer <jwboyer@fedoraproject.org> Cc: Ulf Winkelvos <ulf@winkelvos.de> Cc: Andre Müller <andre.muller@web.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Matt Fleming [Tue, 23 Sep 2014 09:37:43 +0000 (10:37 +0100)]
Revert "efi/x86: efistub: Move shared dependencies to <asm/efi.h>"
This reverts commit f23cf8bd5c1f ("efi/x86: efistub: Move shared
dependencies to <asm/efi.h>") as well as the x86 parts of commit f4f75ad5741f ("efi: efistub: Convert into static library").
The road leading to these two reverts is long and winding.
The above two commits were merged during the v3.17 merge window and
turned the common EFI boot stub code into a static library. This
necessitated making some symbols global in the x86 boot stub which
introduced new entries into the early boot GOT.
The problem was that we weren't fixing up the newly created GOT entries
before invoking the EFI boot stub, which sometimes resulted in hangs or
resets. This failure was reported by Maarten on his Macbook pro.
The proposed fix was commit 9cb0e394234d ("x86/efi: Fixup GOT in all
boot code paths"). However, that caused issues for Linus when booting
his Sony Vaio Pro 11. It was subsequently reverted in commit f3670394c29f.
So that leaves us back with Maarten's Macbook pro not booting.
At this stage in the release cycle the least risky option is to revert
the x86 EFI boot stub to the pre-merge window code structure where we
explicitly #include efi-stub-helper.c instead of linking with the static
library. The arm64 code remains unaffected.
We can take another swing at the x86 parts for v3.18.
x86/kaslr: Avoid the setup_data area when picking location
The KASLR location-choosing logic needs to avoid the setup_data
list memory areas as well. Without this, it would be possible to
have the ASLR position stomp on the memory, ultimately causing
the boot to fail.
Signed-off-by: Kees Cook <keescook@chromium.org> Tested-by: Baoquan He <bhe@redhat.com> Cc: stable@vger.kernel.org Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: Pavel Machek <pavel@ucw.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20140911161931.GA12001@www.outflux.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Dave Young [Tue, 26 Aug 2014 09:06:41 +0000 (17:06 +0800)]
x86 early_ioremap: Increase FIX_BTMAPS_SLOTS to 8
3.16 kernel boot fail with earlyprintk=efi, it keeps scrolling at the
bottom line of screen.
Bisected, the first bad commit is below:
commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
Author: Lv Zheng <lv.zheng@intel.com>
Date: Fri Apr 4 12:38:57 2014 +0800
ACPICA: Tables: Fix table checksums verification before installation.
I did some debugging by enabling both serial and efi earlyprintk, below is
some debug dmesg, seems early_ioremap fails in scroll up function due to
no free slot, see below dmesg output:
Quote reply from Lv.zheng about the early ioremap slot usage in this case:
"""
In early_efi_scroll_up(), 2 mapping entries will be used for the src/dst screen buffer.
In drivers/acpi/acpica/tbutils.c, we've improved the early table loading code in acpi_tb_parse_root_table().
We now need 2 mapping entries:
1. One mapping entry is used for RSDT table mapping. Each RSDT entry contains an address for another ACPI table.
2. For each entry in RSDP, we need another mapping entry to map the table to perform necessary check/override before installing it.
When acpi_tb_parse_root_table() prints something through EFI earlyprintk console, we'll have 4 mapping entries used.
The current 4 slots setting of early_ioremap() seems to be too small for such a use case.
"""
Thus increase the slot to 8 in this patch to fix this issue.
boot-time mappings become 512 page with this patch.
Signed-off-by: Dave Young <dyoung@redhat.com> Cc: <stable@vger.kernel.org> # v3.16 Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Mark Salter [Mon, 8 Sep 2014 17:01:08 +0000 (13:01 -0400)]
efi/arm64: Fix fdt-related memory reservation
Commit 86c8b27a01cf:
"arm64: ignore DT memreserve entries when booting in UEFI mode
prevents early_init_fdt_scan_reserved_mem() from being called for
arm64 kernels booting via UEFI. This was done because the kernel
will use the UEFI memory map to determine reserved memory regions.
That approach has problems in that early_init_fdt_scan_reserved_mem()
also reserves the FDT itself and any node-specific reserved memory.
By chance of some kernel configs, the FDT may be overwritten before
it can be unflattened and the kernel will fail to boot. More subtle
problems will result if the FDT has node specific reserved memory
which is not really reserved.
This patch has the UEFI stub remove the memory reserve map entries
from the FDT as it does with the memory nodes. This allows
early_init_fdt_scan_reserved_mem() to be called unconditionally
so that the other needed reservations are made.
Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Matt Fleming [Fri, 5 Sep 2014 13:52:26 +0000 (14:52 +0100)]
x86/efi: Fixup GOT in all boot code paths
Maarten reported that his Macbook pro 8.2 stopped booting after commit f23cf8bd5c1f49 ("efi/x86: efistub: Move shared dependencies to
<asm/efi.h>"), the main feature of which is changing the visibility of
symbol 'efi_early' from local to global.
By making 'efi_early' global we end up requiring an entry in the Global
Offset Table. Unfortunately, while we do include code to fixup GOT
entries in the early boot code, it's only called after we've executed
the EFI boot stub.
What this amounts to is that references to 'efi_early' in the EFI boot
stub don't point to the correct place.
Since we've got multiple boot entry points we need to be prepared to
fixup the GOT in multiple places, while ensuring that we never do it
more than once, otherwise the GOT entries will still point to the wrong
place.
Yinghai Lu [Thu, 4 Sep 2014 04:50:07 +0000 (21:50 -0700)]
x86/efi: Only load initrd above 4g on second try
Mantas found that after commit 4bf7111f5016 ("x86/efi: Support initrd
loaded above 4G"), the kernel freezes at the earliest possible moment
when trying to boot via UEFI on Asus laptop.
Revert to old way to load initrd under 4G on first try, second try will
use above 4G buffer when initrd is too big and does not fit under 4G.
[ The cause of the freeze appears to be a firmware bug when reading
file data into buffers above 4GB, though the exact reason is unknown.
Mantas reports that the hang can be avoid if the file size is a
multiple of 512 bytes, but I've seen some ASUS firmware simply
corrupting the file data rather than freezing.
Laszlo fixed an issue in the upstream EDK2 DiskIO code in Aug 2013
which may possibly be related, commit 4e39b75e ("MdeModulePkg/DiskIoDxe:
fix source/destination pointer of overrun transfer").
Whatever the cause, it's unlikely that a fix will be forthcoming
from the vendor, hence the workaround - Matt ]
Cc: Laszlo Ersek <lersek@redhat.com> Reported-by: Mantas Mikulėnas <grawity@gmail.com> Reported-by: Harald Hoyer <harald@redhat.com> Tested-by: Anders Darander <anders@chargestorm.se> Tested-by: Calvin Walton <calvin.walton@kepstin.ca> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
We should classify the espfix area as such only if we actually have
enabled the corresponding option. Otherwise the page table dump might
look confusing.
Commit 9eabc99a635a77cbf09 causes following build error when
IOAPIC is disabled.
arch/x86/pci/irq.c: In function 'pirq_disable_irq':
>> arch/x86/pci/irq.c:1259:2: error: implicit declaration of function 'mp_should_keep_irq' [-Werror=implicit-function-declaration]
if (io_apic_assign_pci_irqs && !mp_should_keep_irq(&dev->dev) &&
^
cc1: some warnings being treated as errors
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Grant Likely <grant.likely@linaro.org> Link: http://lkml.kernel.org/r/1409382916-10649-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Merge tag 'xtensa-20140830' of git://github.com/czankel/xtensa-linux
Pull Xtensa updates from Chris Zankel:
"Xtensa improvements for 3.17:
- support highmem on cores with aliasing data cache. Enable highmem
on kc705 by default
- simplify addition of new core variants (no need to modify Kconfig /
Makefiles)
- improve robustness of unaligned access handler and its interaction
with window overflow/underflow exception handlers
- deprecate atomic and spill registers syscalls
- clean up Kconfig: remove orphan MATH_EMULATION, sort 'select'
statements
- wire up renameat2 syscall.
Various fixes:
- fix address checks in dma_{alloc,free}_coherent (runtime BUG)
- fix access to THREAD_RA/THREAD_SP/THREAD_DS (debug build breakage)
- fix TLBTEMP_BASE_2 region handling in fast_second_level_miss
(runtime unrecoverable exception)
- fix a6 and a7 handling in fast_syscall_xtensa (runtime userspace
register clobbering)
- fix kernel/user jump out of fast_unaligned (potential runtime
unrecoverabl exception)
- replace termios IOCTL code definitions with constants (userspace
build breakage)"
* tag 'xtensa-20140830' of git://github.com/czankel/xtensa-linux: (25 commits)
xtensa: deprecate fast_xtensa and fast_spill_registers syscalls
xtensa: don't allow overflow/underflow on unaligned stack
xtensa: fix a6 and a7 handling in fast_syscall_xtensa
xtensa: allow single-stepping through unaligned load/store
xtensa: move invalid unaligned instruction handler closer to its users
xtensa: make fast_unaligned store restartable
xtensa: add double exception fixup handler for fast_unaligned
xtensa: fix kernel/user jump out of fast_unaligned
xtensa: configure kc705 for highmem
xtensa: support highmem in aliasing cache flushing code
xtensa: support aliasing cache in kmap
xtensa: support aliasing cache in k[un]map_atomic
xtensa: implement clear_user_highpage and copy_user_highpage
xtensa: fix TLBTEMP_BASE_2 region handling in fast_second_level_miss
xtensa: allow fixmap and kmap span more than one page table
xtensa: make fixmap region addressing grow with index
xtensa: fix access to THREAD_RA/THREAD_SP/THREAD_DS
xtensa: add renameat2 syscall
xtensa: fix address checks in dma_{alloc,free}_coherent
xtensa: replace IOCTL code definitions with constants
...
Guenter Roeck [Sun, 31 Aug 2014 18:14:26 +0000 (11:14 -0700)]
unicore32: Fix build error
unicore32 builds fail with
arch/unicore32/kernel/signal.c: In function ‘setup_frame’:
arch/unicore32/kernel/signal.c:257: error: ‘usig’ undeclared (first use in this function)
arch/unicore32/kernel/signal.c:279: error: ‘usig’ undeclared (first use in this function)
arch/unicore32/kernel/signal.c: In function ‘handle_signal’:
arch/unicore32/kernel/signal.c:306: warning: unused variable ‘tsk’
arch/unicore32/kernel/signal.c: In function ‘do_signal’:
arch/unicore32/kernel/signal.c:376: error: implicit declaration of function ‘get_signsl’
make[1]: *** [arch/unicore32/kernel/signal.o] Error 1
make: *** [arch/unicore32/kernel/signal.o] Error 2
Bisect points to commit 649671c90eaf ("unicore32: Use get_signal()
signal_setup_done()").
This code never even compiled. Reverting the patch does not work, since
previously used functions no longer exist, so try to fix it up. Compile
tested only.
Fixes: 649671c90eaf ("unicore32: Use get_signal() signal_setup_done()") Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Various assorted fixes:
- a couple of patches from Mark Rutland to resolve an errata with
Cortex-A15 CPUs.
- fix cpuidle for the CPU part ID changes in the last merge window
- add support for a relocation which ARM binutils is generating in
some circumstances"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8130/1: cpuidle/cpuidle-big_little: fix reading cpu id part number
ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex
ARM: 8128/1: abort: don't clear the exclusive monitors
ARM: 8127/1: module: add support for R_ARM_TARGET1 relocations
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Here's the weekly batch of fixes from arm-soc.
The delta is a largeish negative delta, due to revert of SMP support
for Broadcom's STB SoC -- it was accidentally merged before some
issues had been addressed, so they will make a new attempt for 3.18.
I didn't see a need for a full revert of the whole platform due to
this, we're keeping the rest enabled.
The rest is mostly:
- a handful of DT fixes for i.MX (Hummingboard/Cubox-i in particular)
- some MTD/NAND fixes for OMAP
- minor DT fixes for shmobile
- warning fix for UP builds on vexpress/spc
There's also a couple of patches that wires up hwmod on TI's DRA7 SoC
so it can boot. Drivers and the rest had landed for 3.17, and it's
small and isolated so it made sense to pick up now even if it's not a
bugfix"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
vexpress/spc: fix a build warning on array bounds
ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants
MAINTAINERS: catch special Rockchip code locations
ARM: dts: microsom-ar8035: MDIO pad must be set open drain
ARM: dts: omap54xx-clocks: Fix the l3 and l4 clock rates
ARM: brcmstb: revert SMP support
ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled
ARM: dts: Enable UART wake-up events for beagleboard
ARM: dts: Remove twl6030 clk32g "regulator"
ARM: OMAP2+: omap_device: remove warning that clk alias already exists
ARM: OMAP: fix %d confusingly prefixed with 0x in format string
ARM: dts: DRA7: fix interrupt-cells for GPIO
mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc()
ARM: dts: omap3430-sdp: Revert to using software ECC for NAND
ARM: OMAP2+: GPMC: Support Software ECC scheme via DT
mtd: nand: omap: Revert to using software ECC by default
ARM: dts: hummingboard/cubox-i: change SPDIF output to be more descriptive
ARM: dts: hummingboard/cubox-i: add USB OC pinctrl configuration
ARM: shmobile: r8a7791: add missing 0x0100 for SDCKCR
...
Alex Shi [Wed, 16 Jul 2014 11:21:56 +0000 (19:21 +0800)]
vexpress/spc: fix a build warning on array bounds
With ARCH_VEXPRESS_SPC option, kernel build has the following
warning:
arch/arm/mach-vexpress/spc.c: In function ‘ve_spc_clk_init’:
arch/arm/mach-vexpress/spc.c:431:38: warning: array subscript is below array bounds [-Warray-bounds]
struct ve_spc_opp *opps = info->opps[cluster];
^
since 'cluster' maybe '-1' in UP system. This patch does a active
checking to fix this issue.
Signed-off-by: Alex Shi <alex.shi@linaro.org> Acked-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
* tag 'for-v3.17-rc/omap-dra72x-d74x-support-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants
Linus Torvalds [Sun, 31 Aug 2014 17:09:07 +0000 (10:09 -0700)]
Merge tag 'spi-v3.17-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi bugfixes from Mark Brown:
"A smattering of bug fixes for the SPI subsystem, all in driver code
which has seen active work recently and none of them with any great
global impact.
There's also a new ACPI ID for the pxa2xx driver which required no
code changes and the addition of kerneldoc for some structure fields
that were missing it and generating warnings during documentation
builds as a result"
* tag 'spi-v3.17-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: sh-msiof: Fix transmit-only DMA transfers
spi/rockchip: Avoid accidentally turning off the clock
spi: dw: fix kernel crash due to NULL pointer dereference
spi: dw-pci: fix bug when regs left uninitialized
spi: davinci: fix SPI_NO_CS functionality
spi/rockchip: fixup incorrect dma direction setting
spi/pxa2xx: Add ACPI ID for Intel Braswell
spi: spi-au1550: fix build failure
spi: rspi: Fix leaking of unused DMA descriptors
spi: sh-msiof: Fix leaking of unused DMA descriptors
spi: Add missing kerneldoc bits
spi/omap-mcspi: Fix the spi task hangs waiting dma_rx
Mark Brown [Sun, 31 Aug 2014 12:46:19 +0000 (13:46 +0100)]
Merge tag 'spi-v3.17-rc3' into spi-linus
spi: Bug fixes for v3.17
A smattering of bug fixes for the SPI subsystem, all in driver code
which has seen active work recently and none of them with any great
global impact.
There's also a new ACPI ID for the pxa2xx driver which required no code
changes and the addition of kerneldoc for some structure fields that
were missing it and generating warnings during documentation builds as a
result.
# gpg: Signature made Sun 31 Aug 2014 13:19:12 BST using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg: aka "Mark Brown <broonie@debian.org>"
# gpg: aka "Mark Brown <broonie@kernel.org>"
# gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg: aka "Mark Brown <broonie@linaro.org>"
# gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
Linus Torvalds [Sun, 31 Aug 2014 04:04:37 +0000 (21:04 -0700)]
Merge tag 'locks-v3.17-3' of git://git.samba.org/jlayton/linux
Pull file locking bugfx from Jeff Layton:
"Just a bugfix for a bug that crept in to v3.15. It's in a rather rare
error path, and I'm not aware of anyone having hit it, but it's worth
fixing for v3.17"
* tag 'locks-v3.17-3' of git://git.samba.org/jlayton/linux:
locks: pass correct "before" pointer to locks_unlink_lock in generic_add_lease
Linus Torvalds [Sat, 30 Aug 2014 00:22:27 +0000 (17:22 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"One patch to avoid assigning interrupts we don't actually have on
non-PC platforms, and two patches that addresses bugs in the new
IOAPIC assignment code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, irq, PCI: Keep IRQ assignment for runtime power management
x86: irq: Fix bug in setting IOAPIC pin attributes
x86: Fix non-PC platform kernel crash on boot due to NULL dereference
Linus Torvalds [Sat, 30 Aug 2014 00:18:48 +0000 (17:18 -0700)]
Merge tag 'pm+acpi-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- Fix for an ACPI regression related to the handling of fixed events
that caused netlink routines to be (incorrectly) run in interrupt
context from Lan Tianyu
- Fix for an ACPI EC driver regression on Acer Aspire V5-573G that
caused AC/battery plug/unplug and video brightness change
notifications to be delayed on that machine from Lv Zheng
- Fix for an ACPI device enumeration regression that caused ACPI driver
probe to fail for some devices where it succeeded before (Rafael J
Wysocki)
- intel_pstate driver fix to prevent it from printing an information
message for every CPU in the system on every boot from Andi Kleen
- s5pv210 cpufreq driver fix to remove an __init annotation from a
routine that in fact can be called at any time after init too from
Mark Brown
- New Intel Braswell device ID for the ACPI LPSS (Low-Power Subsystem)
driver from Alan Cox
- New Intel Braswell CPU ID for intel_pstate from Mika Westerberg
* tag 'pm+acpi-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: s5pv210: Remove spurious __init annotation
cpufreq: intel_pstate: Add CPU ID for Braswell processor
intel_pstate: Turn per cpu printk into pr_debug
ACPI / LPSS: Add ACPI IDs for Intel Braswell
ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC
ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set
ACPI: Run fixed event device notifications in process context
ACPI / scan: Allow ACPI drivers to bind to PNP device objects
Linus Torvalds [Fri, 29 Aug 2014 23:28:29 +0000 (16:28 -0700)]
Merge branch 'akpm' (fixes from Andrew Morton)
Merge patches from Andrew Morton:
"22 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
kexec: purgatory: add clean-up for purgatory directory
Documentation/kdump/kdump.txt: add ARM description
flush_icache_range: export symbol to fix build errors
tools: selftests: fix build issue with make kselftests target
ocfs2: quorum: add a log for node not fenced
ocfs2: o2net: set tcp user timeout to max value
ocfs2: o2net: don't shutdown connection when idle timeout
ocfs2: do not write error flag to user structure we cannot copy from/to
x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory
drivers/rtc/rtc-s5m.c: re-add support for devices without irq specified
xattr: fix check for simultaneous glibc header inclusion
kexec: remove CONFIG_KEXEC dependency on crypto
kexec: create a new config option CONFIG_KEXEC_FILE for new syscall
x86,mm: fix pte_special versus pte_numa
hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked
mm/zpool: use prefixed module loading
zram: fix incorrect stat with failed_reads
lib: turn CONFIG_STACKTRACE into an actual option.
mm: actually clear pmd_numa before invalidating
memblock, memhotplug: fix wrong type in memblock_find_in_range_node().
...
Junxiao Bi [Fri, 29 Aug 2014 22:19:02 +0000 (15:19 -0700)]
ocfs2: o2net: set tcp user timeout to max value
When tcp retransmit timeout(15mins), the connection will be closed.
Pending messages may be lost during this time. So we set tcp user
timeout to override the retransmit timeout to the max value. This is OK
for ocfs2 since we have disk heartbeat, if peer crash, the disk
heartbeat will timeout and it will be evicted, if disk heartbeat not
timeout and connection idle for a long time, then this means the cluster
enters split-brain state, since fence can't happen, we'd better keep the
connection and wait network recover.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by: Srinivas Eeda <srinivas.eeda@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Junxiao Bi [Fri, 29 Aug 2014 22:19:00 +0000 (15:19 -0700)]
ocfs2: o2net: don't shutdown connection when idle timeout
This patch series is to fix a possible message lost bug in ocfs2 when
network go bad. This bug will cause ocfs2 hung forever even network
become good again.
The messages may lost in this case. After the tcp connection is
established between two nodes, an idle timer will be set to check its
state periodically, if no messages are received during this time, idle
timer will timeout, it will shutdown the connection and try to
reconnect, so pending messages in tcp queues will be lost. This
messages may be from dlm. Dlm may get hung in this case. This may
cause the whole ocfs2 cluster hung.
This is very possible to happen when network state goes bad. Do the
reconnect is useless, it will fail if network state is still bad. Just
waiting there for network recovering may be a good idea, it will not
lost messages and some node will be fenced until cluster goes into
split-brain state, for this case, Tcp user timeout is used to override
the tcp retransmit timeout. It will timeout after 25 days, user should
have notice this through the provided log and fix the network, if they
don't, ocfs2 will fall back to original reconnect way.
This patch (of 3):
Some messages in the tcp queue maybe lost if we shutdown the connection
and reconnect when idle timeout. If packets lost and reconnect success,
then the ocfs2 cluster maybe hung.
To fix this, we can leave the connection there and do the fence decision
when idle timeout, if network recover before fence dicision is made, the
connection survive without lost any messages.
This bug can be saw when network state go bad. It may cause ocfs2 hung
forever if some packets lost. With this fix, ocfs2 will recover from
hung if network becomes good again.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by: Srinivas Eeda <srinivas.eeda@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ben Hutchings [Fri, 29 Aug 2014 22:18:58 +0000 (15:18 -0700)]
ocfs2: do not write error flag to user structure we cannot copy from/to
If we failed to copy from the structure, writing back the flags leaks 31
bits of kernel memory (the rest of the ir_flags field).
In any case, if we cannot copy from/to the structure, why should we
expect putting just the flags to work?
Also make sure ocfs2_info_handle_freeinode() returns the right error
code if the copy_to_user() fails.
Fixes: ddee5cdb70e6 ('Ocfs2: Add new OCFS2_IOC_INFO ioctl for ocfs2 v8.') Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Joel Becker <jlbec@evilplan.org> Acked-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vivek Goyal [Fri, 29 Aug 2014 22:18:55 +0000 (15:18 -0700)]
x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory
Thomas reported that build of x86_64 kernel was failing for him. He is
using 32bit tool chain.
Problem is that while compiling purgatory, I have not specified -m64
flag. And 32bit tool chain must be assuming -m32 by default.
Following is error message.
(mini) [~/work/linux-2.6] make
scripts/kconfig/conf --silentoldconfig Kconfig
CHK include/config/kernel.release
UPD include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
UPD include/generated/utsrelease.h
CC arch/x86/purgatory/purgatory.o
arch/x86/purgatory/purgatory.c:1:0: error: code model 'large' not supported in
the 32 bit mode
Fix it by explicitly passing appropriate -m64/-m32 build flag for
purgatory.
Reported-by: Thomas Glanzmann <thomas@glanzmann.de> Tested-by: Thomas Glanzmann <thomas@glanzmann.de> Suggested-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
xattr: fix check for simultaneous glibc header inclusion
The guard was introduced in commit ea1a8217b06b ("xattr: guard against
simultaneous glibc header inclusion") but it is using #ifdef to check
for a define that is either set to 1 or 0. Fix it to use #if instead.
* Without this patch:
$ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc -E -Iinclude/uapi - >/dev/null
include/uapi/linux/xattr.h:19:0: warning: "XATTR_CREATE" redefined [enabled by default]
#define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
^
/usr/include/x86_64-linux-gnu/sys/xattr.h:32:0: note: this is the location of the previous definition
#define XATTR_CREATE XATTR_CREATE
^
Vivek Goyal [Fri, 29 Aug 2014 22:18:46 +0000 (15:18 -0700)]
kexec: create a new config option CONFIG_KEXEC_FILE for new syscall
Currently new system call kexec_file_load() and all the associated code
compiles if CONFIG_KEXEC=y. But new syscall also compiles purgatory
code which currently uses gcc option -mcmodel=large. This option seems
to be available only gcc 4.4 onwards.
Hiding new functionality behind a new config option will not break
existing users of old gcc. Those who wish to enable new functionality
will require new gcc. Having said that, I am trying to figure out how
can I move away from using -mcmodel=large but that can take a while.
I think there are other advantages of introducing this new config
option. As this option will be enabled only on x86_64, other arches
don't have to compile generic kexec code which will never be used. This
new code selects CRYPTO=y and CRYPTO_SHA256=y. And all other arches had
to do this for CONFIG_KEXEC. Now with introduction of new config
option, we can remove crypto dependency from other arches.
Now CONFIG_KEXEC_FILE is available only on x86_64. So whereever I had
CONFIG_X86_64 defined, I got rid of that.
For CONFIG_KEXEC_FILE, instead of doing select CRYPTO=y, I changed it to
"depends on CRYPTO=y". This should be safer as "select" is not
recursive.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Tested-by: Shaun Ruffell <sruffell@digium.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Fri, 29 Aug 2014 22:18:44 +0000 (15:18 -0700)]
x86,mm: fix pte_special versus pte_numa
Sasha Levin has shown oopses on ffffea0003480048 and ffffea0003480008 at
mm/memory.c:1132, running Trinity on different 3.16-rc-next kernels:
where zap_pte_range() checks page->mapping to see if PageAnon(page).
Those addresses fit struct pages for pfns d2001 and d2000, and in each
dump a register or a stack slot showed d2001730 or d2000730: pte flags
0x730 are PCD ACCESSED PROTNONE SPECIAL IOMAP; and Sasha's e820 map has
a hole between cfffffff and 100000000, which would need special access.
Commit c46a7c817e66 ("x86: define _PAGE_NUMA by reusing software bits on
the PMD and PTE levels") has broken vm_normal_page(): a PROTNONE SPECIAL
pte no longer passes the pte_special() test, so zap_pte_range() goes on
to try to access a non-existent struct page.
Fix this by refining pte_special() (SPECIAL with PRESENT or PROTNONE) to
complement pte_numa() (SPECIAL with neither PRESENT nor PROTNONE). A
hint that this was a problem was that c46a7c817e66 added pte_numa() test
to vm_normal_page(), and moved its is_zero_pfn() test from slow to fast
path: This was papering over a pte_special() snag when the zero page was
encountered during zap. This patch reverts vm_normal_page() to how it
was before, relying on pte_special().
It still appears that this patch may be incomplete: aren't there other
places which need to be handling PROTNONE along with PRESENT? For
example, pte_mknuma() clears _PAGE_PRESENT and sets _PAGE_NUMA, but on a
PROT_NONE area, that would make it pte_special(). This is side-stepped
by the fact that NUMA hinting faults skipped PROT_NONE VMAs and there
are no grounds where a NUMA hinting fault on a PROT_NONE VMA would be
interesting.
Fixes: c46a7c817e66 ("x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels") Reported-by: Sasha Levin <sasha.levin@oracle.com> Tested-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: <stable@vger.kernel.org> [3.16] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Fri, 29 Aug 2014 22:18:42 +0000 (15:18 -0700)]
hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked
spin_lock may be an empty struct for !SMP configurations and so
arch_spin_is_locked may return unconditional 0 and trigger the VM_BUG_ON
even when the lock is held.
Replace spin_is_locked by lockdep_assert_held. We will not BUG anymore
but it is questionable whether crashing makes a lot of sense in the
uncharge path. Uncharge happens after the last page reference was
released so nobody should touch the page and the function doesn't update
any shared state except for res counter which uses synchronization of
its own.
Signed-off-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kees Cook [Fri, 29 Aug 2014 22:18:40 +0000 (15:18 -0700)]
mm/zpool: use prefixed module loading
To avoid potential format string expansion via module parameters, do not
use the zpool type directly in request_module() without a format string.
Additionally, to avoid arbitrary modules being loaded via zpool API
(e.g. via the zswap_zpool_type module parameter) add a "zpool-" prefix
to the requested module, as well as module aliases for the existing
zpool types (zbud and zsmalloc).
Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Seth Jennings <sjennings@variantweb.net> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Acked-by: Dan Streetman <ddstreet@ieee.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chao Yu [Fri, 29 Aug 2014 22:18:37 +0000 (15:18 -0700)]
zram: fix incorrect stat with failed_reads
Since we allocate a temporary buffer in zram_bvec_read to handle partial
page operations in commit 924bd88d703e ("Staging: zram: allow partial
page operations"), our ->failed_reads value may be incorrect as we do
not increase its value when failing to allocate the temporary buffer.
Let's fix this issue and correct the annotation of failed_reads.
Dave Jones [Fri, 29 Aug 2014 22:18:35 +0000 (15:18 -0700)]
lib: turn CONFIG_STACKTRACE into an actual option.
I was puzzled why /proc/$$/stack had disappeared, until I figured out I
had disabled the last debug option that did a 'select STACKTRACE'. This
patch makes the option show up at config time, so it can be enabled
without enabling any of the more heavyweight debug options.
Signed-off-by: Dave Jones <davej@redhat.com> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tang Chen [Fri, 29 Aug 2014 22:18:31 +0000 (15:18 -0700)]
memblock, memhotplug: fix wrong type in memblock_find_in_range_node().
In memblock_find_in_range_node(), we defined ret as int. But it should
be phys_addr_t because it is used to store the return value from
__memblock_find_range_bottom_up().
The bug has not been triggered because when allocating low memory near
the kernel end, the "int ret" won't turn out to be negative. When we
started to allocate memory on other nodes, and the "int ret" could be
minus. Then the kernel will panic.
A simple way to reproduce this: comment out the following code in
numa_init(),
Vivek Goyal [Fri, 29 Aug 2014 22:18:29 +0000 (15:18 -0700)]
resource: fix the case of null pointer access
Richard and Daniel reported that UML is broken due to changes to
resource traversal functions. Problem is that iomem_resource.child can
be null and new code does not consider that possibility. Old code used
a for loop and that loop will not even execute if p was null.
Revert back to for() loop logic and bail out if p is null.
I also moved sibling_only check out of resource_lock. There is no
reason to keep it inside the lock.
Fixes 8c86e70acead629aacb4a ("resource: provide new functions to walk
through resources").
Reported-by: Daniel Walter <sahne@0x90.at> Tested-by: Richard Weinberger <richard@nod.at> Tested-by: Toralf Förster <toralf.foerster@gmx.de> Tested-by: Daniel Walter <sahne@0x90.at> Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Fri, 29 Aug 2014 22:18:26 +0000 (15:18 -0700)]
checkpatch: relax check for length of git commit IDs
Checkpatch currently warns if a git commit ID (in the changelog,
usually) is less than 12 characters or more than 16. The "more than 16"
is excessive. Change the check so we accept IDs from 12 to 40 chars in
length.
Linus Torvalds [Fri, 29 Aug 2014 20:04:13 +0000 (13:04 -0700)]
Merge tag 'nfs-for-3.17-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Highlights:
- NFSv3 stable fix for another POSIX ACL regression
- NFSv4 stable fix for a regression with OPEN_DOWNGRADE
- NFSv4 stable fix for bad close() behaviour when holding a delegation"
* tag 'nfs-for-3.17-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv3: Fix another acl regression
NFSv4: Don't clear the open state when we just did an OPEN_DOWNGRADE
NFSv4: Fix problems with close in the presence of a delegation
Linus Torvalds [Fri, 29 Aug 2014 19:10:03 +0000 (12:10 -0700)]
Merge tag 'usb-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a bunch of fixes for the USB drivers for 3.17-rc3.
Also in here is the movement of the usbip driver out of staging, into
the "real" part of the kernel, it had to wait until after -rc1 to
handle the merge issues involved between the USB and staging trees.
The code is identical, just file movements there.
The USB fixes are all over the place, new device ids, xhci fixes for
reported issues and the usual gadget driver fixes as well. All have
been in linux-next for a while now"
* tag 'usb-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (46 commits)
USB: fix build error with CONFIG_PM_RUNTIME disabled
Revert "usb: ehci/ohci-exynos: Fix PHY getting sequence"
xhci: Disable streams on Via XHCI with device-id 0x3432
USB: serial: fix potential heap buffer overflow
USB: serial: fix potential stack buffer overflow
usb: ehci/ohci-exynos: Fix PHY getting sequence
usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1
USB: sisusb: add device id for Magic Control USB video
usb: dwc2: gadget: Set the default EP max packet value as 8 bytes
usb: ehci: using wIndex + 1 for hub port
USB: storage: add quirk for Newer Technology uSCSI SCSI-USB converter
MAINTAINERS: Add an entry for USB/IP driver
usbip: remove struct usb_device_id table
usbip: move usbip kernel code out of staging
usbip: move usbip userspace code out of staging
USB: whiteheat: Added bounds checking for bulk command response
usb: gadget: remove $(PWD) in ccflags-y
usb: pch_udc: usb gadget device support for Intel Quark X1000
usb: gadget: uvc: fix possible lockup in uvc gadget
usb: wusbcore: fix below build warning
...
Linus Torvalds [Fri, 29 Aug 2014 19:04:10 +0000 (12:04 -0700)]
Merge tag 'staging-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some staging driver fixes for your tree. Nothing huge, just
some fixes for issues that have been reported and a few new device ids
added.
All have been in linux-next for a while"
* tag 'staging-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8188eu: Add new USB ID
staging/rtl8188eu: add 0df6:0076 Sitecom Europe B.V.
staging: android: fix a possible memory leak
staging: lustre: lustre: libcfs: workitem.c: Cleaning up missing null-terminate after strncpy call
staging: et131x: Fix errors caused by phydev->addr accesses before initialisation
staging: lustre: Remove circular dependency on header
Linus Torvalds [Fri, 29 Aug 2014 19:01:22 +0000 (12:01 -0700)]
Merge tag 'char-misc-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are 3 fixes for the mei and thunderbolt drivers that resolve some
reported issues.
All have been in linux-next for a while"
* tag 'char-misc-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
thunderbolt: Clear hops before overwriting
mei: nfc: fix memory leak in error path
mei: reset client state on queued connect request
Linus Torvalds [Fri, 29 Aug 2014 18:52:46 +0000 (11:52 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 bugfixes from Ted Ts'o:
"Ext4 bug fixes for 3.17, to provide better handling of memory
allocation failures, and to fix some journaling bugs involving
journal checksums and FALLOC_FL_ZERO_RANGE"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix same-dir rename when inline data directory overflows
jbd2: fix descriptor block size handling errors with journal_csum
jbd2: fix infinite loop when recovering corrupt journal blocks
ext4: update i_disksize coherently with block allocation on error path
ext4: fix transaction issues for ext4_fallocate and ext_zero_range
ext4: fix incorect journal credits reservation in ext4_zero_range
ext4: move i_size,i_disksize update routines to helper function
ext4: fix BUG_ON in mb_free_blocks()
ext4: propagate errors up to ext4_find_entry()'s callers
Linus Torvalds [Fri, 29 Aug 2014 18:21:48 +0000 (11:21 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
"A smaller collection of fixes that have come up since the initial
merge window pull request. This contains:
- error handling cleanup and support for larger than 16 byte cdbs in
sg_io() from Christoph. The latter just matches what bsg and
friends support, sg_io() got left out in the merge.
- an option for brd to expose partitions in /proc/partitions. They
are hidden by default for compat reasons. From Dmitry Monakhov.
- a few blk-mq fixes from me - killing a dead/unused flag, fix for
merging happening even if turned off, and correction of a few
comments.
- removal of unnecessary ->owner setting in systemace. From Michal
Simek.
- two related fixes for a problem with nesting freezing of queues in
blk-mq. One from Ming Lei removing an unecessary freeze operation,
and another from Tejun fixing the nesting regression introduced in
the merge window.
- fix for a BUG_ON() at bio_endio time when protection info is
attached and the IO has an error. From Sagi Grimberg.
- two scsi_ioctl bug fixes for regressions with scsi-mq from Tony
Battersby.
- a cfq weight update fix and subsequent comment update from Toshiaki
Makita"
* 'for-linus' of git://git.kernel.dk/linux-block:
cfq-iosched: Add comments on update timing of weight
cfq-iosched: Fix wrong children_weight calculation
block: fix error handling in sg_io
fix regression in SCSI_IOCTL_SEND_COMMAND
scsi-mq: fix requests that use a separate CDB buffer
block: support > 16 byte CDBs for SG_IO
block: cleanup error handling in sg_io
brd: add ram disk visibility option
block: systemace: Remove .owner field for driver
blk-mq: blk_mq_freeze_queue() should allow nesting
blk-mq: correct a few wrong/bad comments
block: Fix BUG_ON when pi errors occur
blk-mq: don't allow merges if turned off for the queue
blk-mq: get rid of unused BLK_MQ_F_SHOULD_SORT flag
blk-mq: fix WARNING "percpu_ref_kill() called more than once!"
Will Deacon [Fri, 25 Jul 2014 00:53:54 +0000 (17:53 -0700)]
alpha: io: implement relaxed accessor macros for writes
write{b,w,l,q}_relaxed are implemented by some architectures in order to
permit memory-mapped I/O writes with weaker barrier semantics than the
non-relaxed variants.
This patch implements these write macros for Alpha, in the same vein as
the relaxed read macros, which are already implemented.
Acked-by: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jiang Liu [Fri, 29 Aug 2014 09:26:23 +0000 (17:26 +0800)]
x86, irq, PCI: Keep IRQ assignment for runtime power management
Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins.
We need to keep IRQ assignment for PCI devices during runtime power
management, otherwise it may cause failure of device wakeups.
Commit 3eec595235c17a7 "x86, irq, PCI: Keep IRQ assignment for PCI
devices during suspend/hibernation" has fixed the issue for suspend/
hibernation, we also need the same fix for runtime device sleep too.
Fix: https://bugzilla.kernel.org/show_bug.cgi?id=83271 Reported-and-Tested-by: EmanueL Czirai <amanual@openmailbox.org> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: EmanueL Czirai <amanual@openmailbox.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Grant Likely <grant.likely@linaro.org> Link: http://lkml.kernel.org/r/1409304383-18806-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Darrick J. Wong [Wed, 27 Aug 2014 22:40:09 +0000 (18:40 -0400)]
ext4: fix same-dir rename when inline data directory overflows
When performing a same-directory rename, it's possible that adding or
setting the new directory entry will cause the directory to overflow
the inline data area, which causes the directory to be converted to an
extent-based directory. Under this circumstance it is necessary to
re-read the directory when deleting the old dirent because the "old
directory" context still points to i_block in the inode table, which
is now an extent tree root! The delete fails with an FS error, and
the subsequent fsck complains about incorrect link counts and
hardlinked directories.
Test case (originally found with flat_dir_test in the metadata_csum
test program):
# mkfs.ext4 -O inline_data /dev/sda
# mount /dev/sda /mnt
# mkdir /mnt/x
# touch /mnt/x/changelog.gz /mnt/x/copyright /mnt/x/README.Debian
# sync
# for i in /mnt/x/*; do mv $i $i.longer; done
# ls -la /mnt/x/
total 0
-rw-r--r-- 1 root root 0 Aug 25 12:03 changelog.gz.longer
-rw-r--r-- 1 root root 0 Aug 25 12:03 copyright
-rw-r--r-- 1 root root 0 Aug 25 12:03 copyright.longer
-rw-r--r-- 1 root root 0 Aug 25 12:03 README.Debian.longer
(Hey! Why are there four files now??)
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
Darrick J. Wong [Wed, 27 Aug 2014 22:40:07 +0000 (18:40 -0400)]
jbd2: fix descriptor block size handling errors with journal_csum
It turns out that there are some serious problems with the on-disk
format of journal checksum v2. The foremost is that the function to
calculate descriptor tag size returns sizes that are too big. This
causes alignment issues on some architectures and is compounded by the
fact that some parts of jbd2 use the structure size (incorrectly) to
determine the presence of a 64bit journal instead of checking the
feature flags.
Therefore, introduce journal checksum v3, which enlarges the
descriptor block tag format to allow for full 32-bit checksums of
journal blocks, fix the journal tag function to return the correct
sizes, and fix the jbd2 recovery code to use feature flags to
determine 64bitness.
Add a few function helpers so we don't have to open-code quite so
many pieces.
Switching to a 16-byte block size was found to increase journal size
overhead by a maximum of 0.1%, to convert a 32-bit journal with no
checksumming to a 32-bit journal with checksum v3 enabled.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reported-by: TR Reardon <thomas_reardon@hotmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
Darrick J. Wong [Wed, 27 Aug 2014 22:40:05 +0000 (18:40 -0400)]
jbd2: fix infinite loop when recovering corrupt journal blocks
When recovering the journal, don't fall into an infinite loop if we
encounter a corrupt journal block. Instead, just skip the block and
return an error, which fails the mount and thus forces the user to run
a full filesystem fsck.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
Dmitry Monakhov [Wed, 27 Aug 2014 22:40:03 +0000 (18:40 -0400)]
ext4: update i_disksize coherently with block allocation on error path
In case of delalloc block i_disksize may be less than i_size. So we
have to update i_disksize each time we allocated and submitted some
blocks beyond i_disksize. We weren't doing this on the error paths,
so fix this.
Mikulas Patocka [Thu, 28 Aug 2014 15:09:31 +0000 (11:09 -0400)]
dm crypt: fix access beyond the end of allocated space
The DM crypt target accesses memory beyond allocated space resulting in
a crash on 32 bit x86 systems.
This bug is very old (it dates back to 2.6.25 commit 3a7f6c990ad04 "dm
crypt: use async crypto"). However, this bug was masked by the fact
that kmalloc rounds the size up to the next power of two. This bug
wasn't exposed until 3.17-rc1 commit 298a9fa08a ("dm crypt: use per-bio
data"). By switching to using per-bio data there was no longer any
padding beyond the end of a dm-crypt allocated memory block.
To minimize allocation overhead dm-crypt puts several structures into one
block allocated with kmalloc. The block holds struct ablkcipher_request,
cipher-specific scratch pad (crypto_ablkcipher_reqsize(any_tfm(cc))),
struct dm_crypt_request and an initialization vector.
The variable dmreq_start is set to offset of struct dm_crypt_request
within this memory block. dm-crypt allocates the block with this size:
cc->dmreq_start + sizeof(struct dm_crypt_request) + cc->iv_size.
When accessing the initialization vector, dm-crypt uses the function
iv_of_dmreq, which performs this calculation: ALIGN((unsigned long)(dmreq
+ 1), crypto_ablkcipher_alignmask(any_tfm(cc)) + 1).
dm-crypt allocated "cc->iv_size" bytes beyond the end of dm_crypt_request
structure. However, when dm-crypt accesses the initialization vector, it
takes a pointer to the end of dm_crypt_request, aligns it, and then uses
it as the initialization vector. If the end of dm_crypt_request is not
aligned on a crypto_ablkcipher_alignmask(any_tfm(cc)) boundary the
alignment causes the initialization vector to point beyond the allocated
space.
Fix this bug by calculating the variable iv_size_padding and adding it
to the allocated size.
Also correct the alignment of dm_crypt_request. struct dm_crypt_request
is specific to dm-crypt (it isn't used by the crypto subsystem at all),
so it is aligned on __alignof__(struct dm_crypt_request).
Also align per_bio_data_size on ARCH_KMALLOC_MINALIGN, so that it is
aligned as if the block was allocated with kmalloc.
Reported-by: Krzysztof Kolasa <kkolasa@winsoft.pl> Tested-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Linus Torvalds [Thu, 28 Aug 2014 17:47:10 +0000 (10:47 -0700)]
Merge tag 'backlight-fixes-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight fix from Lee Jones:
"One simple fix to invalidate GPIO non-request"
* tag 'backlight-fixes-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
pwm-backlight: Fix bogus request for GPIO#0 when instantiated from DT
Linus Torvalds [Thu, 28 Aug 2014 17:46:25 +0000 (10:46 -0700)]
Merge tag 'mfd-fixes-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull mfd fixes from Lee Jones:
"Couple of simple fixes due for the 3.17 rcs
(and a sneaky document addition that slipped from the previous
pull-request)"
* tag 'mfd-fixes-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: twl4030-power: Fix PM idle pin configuration to not conflict with regulators
mfd: tc3589x: Add device tree bindings
mfd: ab8500-core: Use 'ifdef' for config options
mfd: htc-i2cpld: Fix %d confusingly prefixed with 0x in format string
mfd: omap-usb-host: Fix %d confusingly prefixed with 0x in format string
Linus Torvalds [Thu, 28 Aug 2014 17:31:29 +0000 (10:31 -0700)]
Merge tag 'pinctrl-v3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin-control fixes from Linus Walleij:
"My first (a bit delayed) pack of pin control fixes for the v3.17
series, only driver fixes:
- SH-PFC (Renesas) r8a7791 CAN bus pin group problem
- Rockchip (GPIO0 configuration)
- Tegra-xusb (interrupt handling)
- Exynos (GPIO interrupt locking)
- Qualcomm (fix misleading example interrupts)
- minor non-critical fixes for abx500 and AT91 also sneaked in,
because I initially intended this pull for post RC-1, hope it's
still OK"
* tag 'pinctrl-v3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: qcom: apq8064: Correct interrupts in example
pinctrl: exynos: Lock GPIOs as interrupts when used as EINTs
pinctrl: pinctrl-at91.c: fix decimal printf format specifiers prefixed with 0x
pinctrl: abx500: remove useless check
pinctrl: tegra-xusb: testing wrong variable in probe()
pinctrl: tegra-xusb: fix an off by one test
pinctrl: rockchip: fix rk3288 gpio0 configuration
sh-pfc: r8a7791: fix CAN pin groups
Linus Torvalds [Thu, 28 Aug 2014 17:30:25 +0000 (10:30 -0700)]
Merge tag 'for-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf
Pull dma-buf fixes from Sumit Semwal:
"The major changes for 3.17 already went via Greg-KH's tree this time
as well; this is a small pull request for dma-buf - all documentation
related"
* tag 'for-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf:
dma-buf/fence: Fix one more kerneldoc warning
dma-buf/fence: Fix a kerneldoc warning
Documentation/dma-buf-sharing.txt: update API descriptions
Linus Torvalds [Thu, 28 Aug 2014 16:44:25 +0000 (09:44 -0700)]
Merge tag 'sound-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here contains not many exciting changes but just a few minor ones: An
off-by-one proc write fix, a couple of trivial incldue guard fixes,
Acer laptop pinconfig fix, and a fix for DSD formats that are still
rarely used"
* tag 'sound-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Set up initial pins for Acer Aspire V5
ALSA: pcm: Fix the silence data for DSD formats
ALSA: ctxfi: ct20k1reg: Fix typo in include guard
ALSA: hda: ca0132_regs.h: Fix typo in include guard
ALSA: core: fix buffer overflow in snd_info_get_line()
Linus Torvalds [Thu, 28 Aug 2014 16:40:37 +0000 (09:40 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Nothing major, one core oops fixes, some radeon oops fixes, some sti
driver fixups, msm driver fixes and a minor Kconfig update for the ww
mutex debugging"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/ast: Add missing entry to dclk_table[]
drm: fix division-by-zero on dumb_create()
ww-mutex: clarify help text for DEBUG_WW_MUTEX_SLOWPATH
radeon: Test for PCI root bus before assuming bus->self
drm/radeon: handle broken disabled rb mask gracefully (6xx/7xx) (v2)
drm/radeon: save/restore the PD addr on suspend/resume
drm/msm: Fix missing unlock on error in msm_fbdev_create()
drm/msm: fix compile error for non-dt builds
drm/msm/mdp4: request vblank during modeset
drm/msm: avoid flood of kernel logs on faults
drm: sti: Add missing dependency on RESET_CONTROLLER
drm: sti: Make of_device_id array const
drm: sti: Fix return value check in sti_drm_platform_probe()
drm: sti: hda: fix return value check in sti_hda_probe()
drm: sti: hdmi: fix return value check in sti_hdmi_probe()
drm: sti: tvout: fix return value check in sti_tvout_probe()
Tony Lindgren [Tue, 19 Aug 2014 15:24:05 +0000 (08:24 -0700)]
mfd: twl4030-power: Fix PM idle pin configuration to not conflict with regulators
Commit 43fef47f94a1 (mfd: twl4030-power: Add a configuration to turn
off oscillator during off-idle) added support for configuring the PMIC
to cut off resources during deeper idle states to save power.
This however caused regression for n900 display power that needed the
PMIC configuration to be disabled with commit d937678ab625 (ARM: dts:
Revert enabling of twl configuration for n900).
Turns out the root cause of the problem is that we must use
TWL4030_RESCONFIG_UNDEF instead of DEV_GRP_NULL to avoid disabling
regulators that may have been enabled before the init function
for twl4030-power.c runs. With TWL4030_RESCONFIG_UNDEF we let the
regulator framework control the regulators like it should. Here we
need to only configure the sys_clken and sys_off_mode triggers for
the regulators that cannot be done by the regulator framework as
it's not running at that point.
This allows us to enable the PMIC configuration for n900.
Fixes: 43fef47f94a1 (mfd: twl4030-power: Add a configuration to turn off oscillator during off-idle) Cc: stable@vger.kernel.org # v3.16 Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This defines the device tree bindings for the Toshiba TC3589x
series of multi-purpose expanders. Only the stuff I can test
is defined: GPIO and keypad. Others may implement more
subdevices further down the road.
This is to complement
commit a435ae1d51e2f18414f2a87219fdbe068231e692
"mfd: Enable the tc3589x for Device Tree" which left off
the definition of the device tree bindings.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Toshiaki Makita [Thu, 28 Aug 2014 08:14:58 +0000 (17:14 +0900)]
cfq-iosched: Add comments on update timing of weight
Explain that weight has to be updated on activation.
This complements previous fix e15693ef18e1 ("cfq-iosched: Fix wrong
children_weight calculation").
Thierry Reding [Fri, 8 Aug 2014 11:06:30 +0000 (13:06 +0200)]
dma-buf/fence: Fix one more kerneldoc warning
The seqno_fence_init() function's cond argument isn't described in the
kerneldoc comment. Fix that to silence a warning when building DocBook
documentation.
Dave Airlie [Thu, 28 Aug 2014 01:48:58 +0000 (11:48 +1000)]
Merge branch 'drm-3.17-rc2-sti-fixes' of git://git.linaro.org/people/benjamin.gaignard/kernel into drm-fixes
I have tested the 6 patches send on mailing list since you merge the sti driver.
I haven't seen issue with those patches except for the missing
dependency on Kconfig
where I have change "depends on" to "select".
* 'drm-3.17-rc2-sti-fixes' of git://git.linaro.org/people/benjamin.gaignard/kernel:
drm: sti: Add missing dependency on RESET_CONTROLLER
drm: sti: Make of_device_id array const
drm: sti: Fix return value check in sti_drm_platform_probe()
drm: sti: hda: fix return value check in sti_hda_probe()
drm: sti: hdmi: fix return value check in sti_hdmi_probe()
drm: sti: tvout: fix return value check in sti_tvout_probe()
Dave Airlie [Thu, 28 Aug 2014 01:48:05 +0000 (11:48 +1000)]
Merge branch 'msm-fixes-3.17' of git://people.freedesktop.org/~robclark/linux into drm-fixes
misc msm fixes from Rob.
* 'msm-fixes-3.17' of git://people.freedesktop.org/~robclark/linux:
drm/msm: Fix missing unlock on error in msm_fbdev_create()
drm/msm: fix compile error for non-dt builds
drm/msm/mdp4: request vblank during modeset
drm/msm: avoid flood of kernel logs on faults
Rajendra Nayak [Thu, 28 Aug 2014 01:38:23 +0000 (19:38 -0600)]
ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
To deal with IPs which are specific to dra74x and dra72x, maintain seperate
ocp interface lists, while keeping the common list for all common IPs.
Move USB OTG SS4 to dra74x only list since its unavailable in
dra72x and is giving an abort during boot. The dra72x only list
is empty for now and a placeholder for future hwmod additions which
are specific to dra72x.
Fixes: d904b38df0db13 ("ARM: DRA7: hwmod: Add SYSCONFIG for usb_otg_ss") Reported-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Nishanth Menon <nm@ti.com>
[paul@pwsan.com: fixed comment style to conform with CodingStyle] Signed-off-by: Paul Walmsley <paul@pwsan.com>
David Herrmann [Sun, 24 Aug 2014 17:23:26 +0000 (19:23 +0200)]
drm: fix division-by-zero on dumb_create()
Kinda unexpected, but DIV_ROUND_UP() can overflow if passed an argument
bigger than UINT_MAX - DIVISOR. Fix this by testing for "!cpp" before
using it in the following division.
Note that DIV_ROUND_UP() is defined as:
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
..this will obviously overflow if (n + d - 1) is bigger than UINT_MAX.
Reported-by: Tommi Rantala <tt.rantala@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Rob Clark [Wed, 27 Aug 2014 15:19:26 +0000 (11:19 -0400)]
ww-mutex: clarify help text for DEBUG_WW_MUTEX_SLOWPATH
We really don't want distro's enabling this in their kernels. Try and
make that more clear.
Signed-off-by: Rob Clark <robdclark@gmail.com> Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 28 Aug 2014 01:32:20 +0000 (11:32 +1000)]
Merge branch 'drm-fixes-3.17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Just a few more radeon fixes for 3.17.
* 'drm-fixes-3.17' of git://people.freedesktop.org/~agd5f/linux:
radeon: Test for PCI root bus before assuming bus->self
drm/radeon: handle broken disabled rb mask gracefully (6xx/7xx) (v2)
drm/radeon: save/restore the PD addr on suspend/resume
USB: fix build error with CONFIG_PM_RUNTIME disabled
commit bdd405d2a528 ("usb: hub: Prevent hub autosuspend if
usbcore.autosuspend is -1") causes a build error if CONFIG_PM_RUNTIME is
disabled. Fix that by doing a simple #ifdef guard around it.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Roger Quadros <rogerq@ti.com> Cc: Michael Welling <mwelling@emacinc.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pm-cpufreq:
cpufreq: s5pv210: Remove spurious __init annotation
cpufreq: intel_pstate: Add CPU ID for Braswell processor
intel_pstate: Turn per cpu printk into pr_debug
Since this is a platform driver and can be probed at any time we can't
annotate funtions in the probe path as __init, the code can't safely be
discarded at the end of kernel init.
Signed-off-by: Mark Brown <broonie@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge branches 'acpi-scan', 'acpi-ec' and 'acpi-lpss'
* acpi-scan:
ACPI: Run fixed event device notifications in process context
ACPI / scan: Allow ACPI drivers to bind to PNP device objects
* acpi-ec:
ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC
ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set
Andi Kleen [Wed, 27 Aug 2014 17:17:08 +0000 (10:17 -0700)]
intel_pstate: Turn per cpu printk into pr_debug
On larger systems intel_pstate currently spams the boot up
log with its "Intel pstate controlling ..." message for each CPU.
It's the only subsystem that prints a message for each
CPU.
Turn the message into a pr_debug.
Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Dmitry Monakhov [Wed, 27 Aug 2014 22:40:00 +0000 (18:40 -0400)]
ext4: fix transaction issues for ext4_fallocate and ext_zero_range
After commit f282ac19d86f we use different transactions for
preallocation and i_disksize update which result in complain from fsck
after power-failure. spotted by generic/019. IMHO this is regression
because fs becomes inconsistent, even more 'e2fsck -p' will no longer
works (which drives admins go crazy) Same transaction requirement
applies ctime,mtime updates
Vivek writes:
We not longer need this patch, since we have planned to remove
the usb-phy drivers for samsung [1], we have completely deleted
the support for the the same from ohci-exynos and ehci-exynos
drivers too [2]. Sorry for the confusion, but this patch can be
dropped and instead we can pick the patches in [2].
projects / karo-tx-linux.git / log