Commit 394e31d2ce ("mem-hotplug: alloc new page from a nearest
neighbor node when mem-offline") introduced new_node_page() for memory
hotplug.
In new_node_page(), the nid is cleared before calling
__alloc_pages_nodemask(). But if it is the only node of the system, and
the first round allocation fails, it will not be able to get memory from
an empty nodemask, and will trigger oom.
The patch checks whether it is the last node on the system, and if it
is, then don't clear the nid in the nodemask.
Fixes: 394e31d2ce ("mem-hotplug: alloc new page from a nearest neighbor node when mem-offline")
Link: http://lkml.kernel.org/r/1473044391.4250.19.camel@TP420
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Reported-by: John Allen <jallen@linux.vnet.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Due to our compiler include directives, the build pathnames for header
files often end up being of the form "$srcdir/./include/linux/xyz.h",
which ends up having that extra "." path component after the build base
in it.
Teach faddr2line to skip that too, to make code generated in inline
functions in header files match the filename for the regular C files.
Rabin Vincent pointed out that I can't make a stricter regexp match by
using the " at " prefix for the pathname, because that ends up being
locale-dependent. But this does require that the path match be preceded
by a space, to make it a bit more strict (that matters mainly if we
didn't find any base_dir at all, and we only end up with the "./" part
of the match)
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Rabin Vincent <rabin@rab.in>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Right now, if slice is expired, we start a new slice. If a bio is
queued, we keep on extending slice by throtle_slice interval (100ms).
This worked well as long as pending timer function got executed with-in
few milli seconds of scheduled time. But looks like with recent changes
in timer subsystem, slack can be much longer depending on the expiry time
of the scheduled timer.
commit 500462a9de ("timers: Switch to a non-cascading wheel")
This means, by the time timer function gets executed, it is possible the
delay from scheduled time is more than 100ms. That means current code
will conclude that existing slice has expired and a new one needs to
be started. New slice will be 100ms by default and that will not be
sufficient to meet rate requirement of group given the bio size and
bio will not be dispatched and we will start a new timer function to
wait. And when that timer expires, same process will repeat and we
will wait again and this can easily be an infinite loop.
Solve this issue by starting a new slice only if throttle gropup is
empty. If it is not empty, that means there should be an active slice
going on. Ideally it should not be expired but given the slack, it is
possible that it has expired.
Reported-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Commit 480b6837aa "nvdimm: fix PHYS_PFN/PFN_PHYS mixup" identified
that we were passing an invalid address to devm_nvdimm_ioremap(). With
that fixed it exposed a bug in the memory reservation size for flush
hint tables. Since we map a full page we need to mock a full page of
memory to back the flush hint table entries.
Cc: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Pull crypto fixes from Herbert Xu:
"This fixes a potential weakness in IPsec CBC IV generation, as well as
a number of issues that arose out of an OOM crash on ARM with CTR-mode
AES"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: arm64/aes-ctr - fix NULL dereference in tail processing
crypto: arm/aes-ctr - fix NULL dereference in tail processing
crypto: skcipher - Fix blkcipher walk OOM crash
crypto: echainiv - Replace chaining with multiplication
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Merge tag 'drm-fixes-for-4.8-rc7' of git://people.freedesktop.org/~airlied/linux
Pull exynos and one stable ABI fix from Dave Airlie:
"One important drm 32/64 ABI fix came in so I'll dequeue what I have,
the rest is just exynos runtime pm fixes, but the net removal of code
seems like a win to me.
I'm going to be sporadic this week due to school holidays, so if
anything urgent turns up, Daniel will take care of it"
* tag 'drm-fixes-for-4.8-rc7' of git://people.freedesktop.org/~airlied/linux:
drm: Only use compat ioctl for addfb2 on X86/IA64
Subject: [PATCH, RESEND] drm: exynos: avoid unused function warning
drm/exynos: g2d: fix system and runtime pm integration
drm/exynos: rotator: fix system and runtime pm integration
drm/exynos: gsc: fix system and runtime pm integration
drm/exynos: fimc: fix system and runtime pm integration
exynos-drm: Fix unsupported GEM memory type error message to be clear
addr2line doesn't work with KASLR addresses. Add a basic addr2line
wrapper script which takes the 'func+offset/size' format as input.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add lost Kconfig symbol. This should have been part of 40e084a506
('MIPS: Add uprobes support.').
Fixes: 40e084a506 ('MIPS: Add uprobes support.')
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
nd_activate_region() iomaps any hint addresses required when activating
a region. To prevent duplicate mappings it checks the PFN of the hint to
be mapped against the PFNs of the already mapped hints. Unfortunately it
doesn't convert the PFN back into a physical address before passing it
to devm_nvdimm_ioremap(). Instead it applies PHYS_PFN a second time
which ends about as well as you would imagine.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Fix a regression caused by commit 2bc46b3ad3 ("[media] media/pci:
convert drivers to use the new vb2_queue dev field").
Three places where q->dev should be set were missed, causing
a WARN.
Fixes: 2bc46b3ad3 ("[media] media/pci: convert drivers to use the new vb2_queue dev field").
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Commit 44a7185c2a ("of/platform: Add common method to populate
default bus") added new arch_initcall of_platform_default_populate_init()
that will override device_initcall octeon_publish_devices(). This broke
many OCTEON boards as important devices are not getting probed anymore
(e.g. on EdgeRouter Lite the USB mass storage/rootfs is missing).
Fix by changing octeon_publish_devices() to arch_initcall.
Fixes: 44a7185c2a ("of/platform: Add common method to populate default bus")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Rob Herring <robh@kernel.org>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14041/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Commit 1685ddbe35 ("MIPS: Octeon: Changes to support readq()/writeq()
usage.") added bitwise shift operations that assume that unsigned long
is always 64-bits. This broke the build of VDSO code, as it gets compiled
also in "faked" 32-bit mode. Althought the failing inline functions are
never executed in 32-bit mode, they still need to pass the compilation.
Fix by using 64-bit types explicitly.
The patch fixes the following build failure:
CC arch/mips/vdso/gettimeofday-o32.o
In file included from los/git/devel/linux/arch/mips/include/asm/io.h:32:0,
from los/git/devel/linux/arch/mips/include/asm/page.h:194,
from los/git/devel/linux/arch/mips/vdso/vdso.h:26,
from los/git/devel/linux/arch/mips/vdso/gettimeofday.c:11:
los/git/devel/linux/arch/mips/include/asm/mach-cavium-octeon/mangle-port.h: In function '__should_swizzle_bits':
los/git/devel/linux/arch/mips/include/asm/mach-cavium-octeon/mangle-port.h:19:40: error: right shift count >= width of type [-Werror=shift-count-overflow]
unsigned long did = ((unsigned long)a >> 40) & 0xff;
^~
Fixes: 1685ddbe35 ("MIPS: Octeon: Changes to support readq()/writeq() usage.")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Steven J. Hill <steven.hill@cavium.com>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14039/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
cpu_has_fpu macro uses smp_processor_id() and is currently executed
with preemption enabled, that triggers the warning at runtime.
It is assumed throughout the kernel that if any CPU has an FPU, then all
CPUs would have an FPU as well, so it is safe to perform the check with
preemption enabled - change the code to use raw_ variant of the check to
avoid the warning.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/14125/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On a imx6ul-pico board the following error is seen during system suspend:
dpm_run_callback(): platform_pm_resume+0x0/0x54 returns -110
PM: Device 2090000.flexcan failed to resume: error -110
The reason for this suspend error is because when the CAN interface is not
active the clocks are disabled and then flexcan_chip_enable() will
always fail due to a timeout error.
In order to fix this issue, only call flexcan_chip_enable/disable()
when the CAN interface is active.
Based on a patch from Dong Aisheng in the NXP kernel.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
commit 1a6509d991 ("[IPSEC]: Add support for combined mode algorithms")
introduced aead. The function attach_aead kmemdup()s the algorithm
name during xfrm_state_construct().
However this memory is never freed.
Implementation has since been slightly modified in
commit ee5c23176f ("xfrm: Clone states properly on migration")
without resolving this leak.
This patch adds a kfree() call for the aead algorithm name.
Fixes: 1a6509d991 ("[IPSEC]: Add support for combined mode algorithms")
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Acked-by: Rami Rosen <roszenrami@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
commit a894cf6c5a ("mtd: nand: mxc: switch to mtd_ooblayout_ops")
introduced a regression accessing the OOB area from the mxc_nand
driver due to an Obiwan error in the mxc_nand_v[12]_ooblayout_free()
functions. They report a bogus oobregion { 64, 7 } which leads to
errors accessing bogus data when reading the oob area.
Prior to the commit the mtd-oobtest module could be run without any
errors. With the offending commit, this test fails with results like:
|Running mtd-oobtest
|
|=================================================
|mtd_oobtest: MTD device: 5
|mtd_oobtest: MTD device size 524288, eraseblock size 131072, page size 2048, count of eraseblocks 4, pages per eraseblock 64, OOB size 64
|mtd_test: scanning for bad eraseblocks
|mtd_test: scanned 4 eraseblocks, 0 are bad
|mtd_oobtest: test 1 of 5
|mtd_oobtest: writing OOBs of whole device
|mtd_oobtest: written up to eraseblock 0
|mtd_oobtest: written 4 eraseblocks
|mtd_oobtest: verifying all eraseblocks
|mtd_oobtest: error @addr[0x0:0x19] 0x9a -> 0x78 diff 0xe2
|mtd_oobtest: error @addr[0x0:0x1a] 0xcc -> 0x0 diff 0xcc
|mtd_oobtest: error @addr[0x0:0x1b] 0xe0 -> 0x85 diff 0x65
|mtd_oobtest: error @addr[0x0:0x1c] 0x60 -> 0x62 diff 0x2
|mtd_oobtest: error @addr[0x0:0x1d] 0x69 -> 0x45 diff 0x2c
|mtd_oobtest: error @addr[0x0:0x1e] 0xcd -> 0xa0 diff 0x6d
|mtd_oobtest: error @addr[0x0:0x1f] 0xf2 -> 0x60 diff 0x92
|mtd_oobtest: error: verify failed at 0x0
[...]
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Fixes: a894cf6c5a ("mtd: nand: mxc: switch to mtd_ooblayout_ops")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
When mtk_nfc_do_write_page() comparing the sector number,because the
sector number field is at the 12th-bit position of NFI_BYTELEN
register,the masked register should be shifted 12 bits before being
compared.The result of this bug may cause the second subpage has
incomplete ECC parity bytes.
Signed-off-by: RogerCC Lin <rogercc.lin@mediatek.com>
Fixes: 1d6b1e4649 ("mtd: mediatek: driver for MTK Smart Device")
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
When mtk_ecc_encode() is writing the ECC parity data to the OOB
region,because each register is 4 bytes in length,but the len's unit is
in bytes,the operation in the for loop will cross the ECC's boundary.
Signed-off-by: RogerCC Lin <rogercc.lin@mediatek.com>
Fixes: 1d6b1e4649 ("mtd: mediatek: driver for MTK Smart Device")
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
There is no point in trying to configure the trigger of a chained
interrupt if no trigger information has been configured. At best
this is ignored, and at the worse this confuses the underlying
irqchip (which is likely not to handle such a thing), and
unnecessarily alarms the user.
Only apply the configuration if type is not IRQ_TYPE_NONE.
Fixes: 1e12c4a939 ("genirq: Correctly configure the trigger on chained interrupts")
Reported-and-tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/CAMuHMdVW1eTn20=EtYcJ8hkVwohaSuH_yQXrY2MGBEvZ8fpFOg@mail.gmail.com
Link: http://lkml.kernel.org/r/1474274967-15984-1-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Similar to struct drm_update_draw, struct drm_mode_fb_cmd2 has an
unaligned 64 bit field (modifier). This get packed differently between
32 bit and 64 bit modes on architectures that can handle unaligned 64
bit access (X86 and IA64). Other architectures pack the structs the
same and don't need the compat wrapper. Use the same condition for
drm_mode_fb_cmd2 as we use for drm_update_draw.
Note that only the modifier will be packed differently between compat
and non-compat versions.
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Kristian H. Kristensen <hoegsberg@chromium.org>
[seanpaul added not at bottom of commit msg re: modifier]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1473801645-116011-1-git-send-email-hoegsberg@chromium.org
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Just fixup to runtime pm usage and some cleanups.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
Subject: [PATCH, RESEND] drm: exynos: avoid unused function warning
drm/exynos: g2d: fix system and runtime pm integration
drm/exynos: rotator: fix system and runtime pm integration
drm/exynos: gsc: fix system and runtime pm integration
drm/exynos: fimc: fix system and runtime pm integration
exynos-drm: Fix unsupported GEM memory type error message to be clear
* reject aggregation sessions for TSID/TID 8-16 that we
can never use anyway and which could confuse drivers
* check return value of skb_linearize()
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Merge tag 'mac80211-for-davem-2016-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Two more fixes:
* reject aggregation sessions for TSID/TID 8-16 that we
can never use anyway and which could confuse drivers
* check return value of skb_linearize()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
MAC devices use the RWKPKTEN and MGKPKTEN bits of the PMT Control/Status
register to generate power management events.
So this patch is to properly set the RWKPKTEN [BIT(2)] inside the
PMT register (needed in case of global unicast).
Reported-by: Aditi SHARMA <aditi-hed.sharma@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When CONFIG_PM is not set, we get a warning about an unused function:
drivers/gpu/drm/exynos/exynos_drm_gsc.c:1219:12: error: 'gsc_clk_ctrl' defined but not used [-Werror=unused-function]
static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable)
^~~~~~~~~~~~
This removes the two #ifdef checks in this file and instead marks the
functions as __maybe_unused, which is a more reliable way of doing the
same, allowing better build coverage and avoiding the warning above.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Here are 2 small fixes, and one new device id, for 4.8-rc7
The fixes solve a build error that was reported in your tree for the
blackfin arch, and resolve an issue with a number of broken USB devices
that reported the wrong interval rate. Included here is also a new
device id for the usb-serial driver.
All 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-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are two small fixes, and one new device id, for 4.8-rc7
The fixes solve a build error that was reported in your tree for the
blackfin arch, and resolve an issue with a number of broken USB
devices that reported the wrong interval rate. Included here is also
a new device id for the usb-serial driver.
All have been in linux-next with no reported issues"
* tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: change bInterval default to 10 ms
usb: musb: Fix tusb6010 compile error on blackfin
USB: serial: simple: add support for another Infineon flashloader
Pull perf fixes from Thomas Gleixner:
"A couple of small fixes to x86 perf drivers:
- Measure L2 for HW_CACHE* events on AMD
- Fix the address filter handling in the intel/pt driver
- Handle the BTS disabling at the proper place"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2
perf/x86/intel/pt: Do validate the size of a kernel address filter
perf/x86/intel/pt: Fix kernel address filter's offset validation
perf/x86/intel/pt: Fix an off-by-one in address filter configuration
perf/x86/intel: Don't disable "intel_bts" around "intel" event batching
Pull SMP build fixlet from Thomas Gleixner:
"Add a missing include in cpuhotplug.h"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Include linux/types.h in linux/cpuhotplug.h
Pull irq fixes from Thomas Gleixner:
"Two patches from Boris which address a potential deadlock in the atmel
irq chip driver"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/atmel-aic: Fix potential deadlock in ->xlate()
genirq: Provide irq_gc_{lock_irqsave,unlock_irqrestore}() helpers
Since commit acb2505d01 ("openrisc: fix copy_from_user()"),
copy_from_user() returns the number of bytes requested, not the
number of bytes not copied.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Fixes: acb2505d01 ("openrisc: fix copy_from_user()")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
avr32 builds fail with:
arch/avr32/kernel/built-in.o: In function `arch_ptrace':
(.text+0x650): undefined reference to `___copy_from_user'
arch/avr32/kernel/built-in.o:(___ksymtab+___copy_from_user+0x0): undefined
reference to `___copy_from_user'
kernel/built-in.o: In function `proc_doulongvec_ms_jiffies_minmax':
(.text+0x5dd8): undefined reference to `___copy_from_user'
kernel/built-in.o: In function `proc_dointvec_minmax_sysadmin':
sysctl.c:(.text+0x6174): undefined reference to `___copy_from_user'
kernel/built-in.o: In function `ptrace_has_cap':
ptrace.c:(.text+0x69c0): undefined reference to `___copy_from_user'
kernel/built-in.o:ptrace.c:(.text+0x6b90): more undefined references to
`___copy_from_user' follow
Fixes: 8630c32275 ("avr32: fix copy_from_user()")
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Move code from system sleep pm to runtime pm callbacks to ensure proper
driver state preservation when device is under power domain. Then, use
generic helpers for using runtime pm for system sleep pm.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Use generic helpers instead of open-coding usage of runtime pm for system
sleep pm, which was potentially broken for some corner cases.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Use generic helpers instead of open-coding usage of runtime pm for system
sleep pm, which was potentially broken for some corner cases.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Use generic helpers instead of open-coding usage of runtime pm for system
sleep pm, which was potentially broken for some corner cases.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Fix unsupported GEM memory type error message to include the memory type
information.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
... by turning it into what used to be multipages counterpart
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes for code merged this cycle:
- Fix restore of SPRs upon wake up from hypervisor state loss from Gautham R. Shenoy
- Fix the state of root PE from Gavin Shan
- Detach from PE on releasing PCI device from Gavin Shan
- Fix size of NUM_CPU_FTR_KEYS on 32-bit
- Fix missed TCE invalidations that should fallback to OPAL
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Merge tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes for code merged this cycle:
- Fix restore of SPRs upon wake up from hypervisor state loss from
Gautham R Shenoy
- Fix the state of root PE from Gavin Shan
- Detach from PE on releasing PCI device from Gavin Shan
- Fix size of NUM_CPU_FTR_KEYS on 32-bit
- Fix missed TCE invalidations that should fallback to OPAL"
* tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powernv/pci: Fix missed TCE invalidations that should fallback to OPAL
powerpc/powernv: Detach from PE on releasing PCI device
powerpc/powernv: Fix the state of root PE
powerpc/kernel: Fix size of NUM_CPU_FTR_KEYS on 32-bit
powerpc/powernv: Fix restore of SPRs upon wake up from hypervisor state loss
Commit 6e7333d "net: add rx_nohandler stat counter" added the new entry
rx_nohandler into struct rtnl_link_stats64. Unfortunately the bna
driver foolishly depends on the structure. It uses part of it for
ethtool statistics and it's not bad but the driver assumes its size
is constant as it defines string for each existing entry. The problem
occurs when the structure is extended because you need to modify bna
driver as well. If not any attempt to retrieve ethtool statistics results
in crash in bnad_get_strings().
The patch changes BNAD_ETHTOOL_STATS_NUM so it counts real number of
strings in the array and also removes rtnl_link_stats64 entries that
are not used in output and are always zero.
Fixes: 6e7333d "net: add rx_nohandler stat counter"
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit ba5ca784 "bna: check for dma mapping errors" added besides other
things a statistic that counts number of DMA buffer mapping failures
per each Rx queue. This counter is not included in ethtool stats output.
Fixes: ba5ca784 "bna: check for dma mapping errors"
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This function actually operates on u32 yet its paramteres were declared
as u16, causing integer truncation upon calling.
Note in patch context that ADDIP_SERIAL_SIGN_BIT is already 32 bits.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb is not freed if newsk is NULL. Rework the error path so free_skb is
unconditionally called on function exit.
Fixes: c3ea9fa274 ("[IrDA] af_irda: IRDA_ASSERT cleanups")
Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A malicious TCP receiver, sending SACK, can force the sender to split
skbs in write queue and increase its memory usage.
Then, when socket is closed and its write queue purged, we might
overflow sk_forward_alloc (It becomes negative)
sk_mem_reclaim() does nothing in this case, and more than 2GB
are leaked from TCP perspective (tcp_memory_allocated is not changed)
Then warnings trigger from inet_sock_destruct() and
sk_stream_kill_queues() seeing a not zero sk_forward_alloc
All TCP stack can be stuck because TCP is under memory pressure.
A simple fix is to preemptively reclaim from sk_mem_uncharge().
This makes sure a socket wont have more than 2 MB forward allocated,
after burst and idle period.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If a TCP socket gets a large write queue, an overflow can happen
in a test in __tcp_retransmit_skb() preventing all retransmits.
The flow then stalls and resets after timeouts.
Tested:
sysctl -w net.core.wmem_max=1000000000
netperf -H dest -- -s 1000000000
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of error during netback_probe() (e.g. an entry missing on the
xenstore) netback_remove() is called on the new device, which will set
the device backend state to XenbusStateClosed by calling
set_backend_state(). However, the backend state wasn't initialized by
netback_probe() at this point, which will cause and invalid transaction
and set_backend_state() to BUG().
Initialize the backend state at the beginning of netback_probe() to
XenbusStateInitialising, and create two new valid state transitions on
set_backend_state(), from XenbusStateInitialising to XenbusStateClosed,
and from XenbusStateInitialising to XenbusStateInitWait.
Signed-off-by: Filipe Manco <filipe.manco@neclab.eu>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull cifs fixes from Steve French:
"Small set of cifs fixes"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
Move check for prefix path to within cifs_get_root()
Compare prepaths when comparing superblocks
Fix memory leaks in cifs_do_mount()
