17 Oct, 2013
1 commit
-
Commit 3812c8c8f395 ("mm: memcg: do not trap chargers with full
callstack on OOM") assumed that only a few places that can trigger a
memcg OOM situation do not return VM_FAULT_OOM, like optional page cache
readahead. But there are many more and it's impractical to annotate
them all.First of all, we don't want to invoke the OOM killer when the failed
allocation is gracefully handled, so defer the actual kill to the end of
the fault handling as well. This simplifies the code quite a bit for
added bonus.Second, since a failed allocation might not be the abrupt end of the
fault, the memcg OOM handler needs to be re-entrant until the fault
finishes for subsequent allocation attempts. If an allocation is
attempted after the task already OOMed, allow it to bypass the limit so
that it can quickly finish the fault and invoke the OOM killer.Reported-by: azurIt
Signed-off-by: Johannes Weiner
Cc: Michal Hocko
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Oct, 2013
1 commit
-
Pull device tree fixes and reverts from Grant Likely:
"One bug fix and three reverts. The reverts back out the slightly
controversial feeding the entire device tree into the random pool and
the reserved-memory binding which isn't fully baked yet. Expect the
reserved-memory patches at least to resurface for v3.13.The bug fixes removes a scary but harmless warning on SPARC that was
introduced in the v3.12 merge window. v3.13 will contain a proper fix
that makes the new code work on SPARC.On the plus side, the diffstat looks *awesome*. I love removing lines
of code"* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
Revert "drivers: of: add initialization code for dma reserved memory"
Revert "ARM: init: add support for reserved memory defined by device tree"
Revert "of: Feed entire flattened device tree into the random pool"
of: fix unnecessary warning on missing /cpus node
15 Oct, 2013
2 commits
-
This reverts commit 9d8eab7af79cb4ce2de5de39f82c455b1f796963. There is
still no consensus on the bindings for the reserved memory and various
drawbacks of the proposed solution has been shown, so the best now is to
revert it completely and start again from scratch later.Signed-off-by: Marek Szyprowski
Signed-off-by: Grant Likely -
Pull infiniband updates from Roland Dreier:
"Last batch of IB changes for 3.12: many mlx5 hardware driver fixes
plus one trivial semicolon cleanup"* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB: Remove unnecessary semicolons
IB/mlx5: Ensure proper synchronization accessing memory
IB/mlx5: Fix alignment of reg umr gather buffers
IB/mlx5: Fix eq names to display nicely in /proc/interrupts
mlx5: Fix error code translation from firmware to driver
IB/mlx5: Fix opt param mask according to firmware spec
mlx5: Fix opt param mask for sq err to rts transition
IB/mlx5: Disable atomic operations
mlx5: Fix layout of struct mlx5_init_seg
mlx5: Keep polling to reclaim pages while any returned
IB/mlx5: Avoid async events on invalid port number
IB/mlx5: Decrease memory consumption of mr caches
mlx5: Remove checksum on command interface commands
IB/mlx5: Fix memory leak in mlx5_ib_create_srq
IB/mlx5: Flush cache workqueue before destroying it
IB/mlx5: Fix send work queue size calculation
14 Oct, 2013
2 commits
-
Pull ARM SoC fixes from Olof Johansson:
"A small batch of fixes this week, mostly OMAP related. Nothing stands
out as particularly controversial.Also a fix for a 3.12-rc1 timer regression for Exynos platforms,
including the Chromebooks"* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: exynos: dts: Update 5250 arch timer node with clock frequency
ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
ARM: mach-omap2: board-generic: fix undefined symbol
ARM: dts: Fix pinctrl mask for omap3
ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT -
…kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
Few fixes for omap3 related hangs and errors that people have
noticed now that people are actually using the device tree
based booting for omap3.Also one regression fix for timer compile for dra7xx when
omap5 is not selected, and a LED regression fix for n900.* tag 'fixes-against-v3.12-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
ARM: mach-omap2: board-generic: fix undefined symbol
ARM: dts: Fix pinctrl mask for omap3
ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
ARM: OMAP2: gpmc-onenand: fix sync mode setup with DTSigned-off-by: Olof Johansson <olof@lixom.net>
13 Oct, 2013
1 commit
-
Pull gcc "asm goto" miscompilation workaround from Ingo Molnar:
"This is the fix for the GCC miscompilation discussed in the following
lkml thread:[x86] BUG: unable to handle kernel paging request at 00740060
The bug in GCC has been fixed by Jakub and the fix will be part of the
GCC 4.8.2 release expected to be released next week - so the quirk's
version test checks for miscompilation bug
12 Oct, 2013
1 commit
-
Pull drm fixes from Dave Airlie:
"All over the map..- nouveau:
disable MSI, needs more work, will try again next merge window
- radeon:
audio + uvd regression fixes, dpm fixes, reset fixes
- i915:
the dpms fix might fix your haswellAnd one pain in the ass revert, so we have VGA arbitration that when
implemented 4-5 years ago really hoped that GPUs could remove
themselves from arbitration completely once they had a kernel driver.It seems Intel hw designers decided that was too nice a facility to
allow us to have so they removed it when they went on-die (so since
Ironlake at least). Now Alex Williamson added support for VGA
arbitration for newer GPUs however this now exposes itself to
userspace as requireing arbitration of GPU VGA regions and the X
server gets involved and disables things that it can't handle when VGA
access is possibly required around every operation.So in order to not break userspace we just reverted things back to the
old known broken status so maybe we can try and design out way out.Ville also had a patch to use stop machine for the two times Intel
needs to access VGA space, that might be acceptable with some rework,
but for now myself and Daniel agreed to just go back"* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (23 commits)
Revert "i915: Update VGA arbiter support for newer devices"
Revert "drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff is done"
drm/radeon: re-enable sw ACR support on pre-DCE4
drm/radeon/dpm: disable bapm on TN asics
drm/radeon: improve soft reset on CIK
drm/radeon: improve soft reset on SI
drm/radeon/dpm: off by one in si_set_mc_special_registers()
drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()
drm/radeon: forever loop on error in radeon_do_test_moves()
drm/radeon: fix hw contexts for SUMO2 asics
drm/radeon: fix typo in CP DMA register headers
drm/radeon/dpm: disable multiple UVD states
drm/radeon: use hw generated CTS/N values for audio
drm/radeon: fix N/CTS clock matching for audio
drm/radeon: use 64-bit math to calculate CTS values for audio (v2)
drm/edid: catch kmalloc failure in drm_edid_to_speaker_allocation
Revert "drm/fb-helper: don't sleep for screen unblank when an oops is in progress"
drm/gma500: fix things after get/put page helpers
drm/nouveau/mc: disable msi support by default, it's busted in tons of places
drm/i915: Only apply DPMS to the encoder if enabled
...
11 Oct, 2013
7 commits
-
Fengguang Wu, Oleg Nesterov and Peter Zijlstra tracked down
a kernel crash to a GCC bug: GCC miscompiles certain 'asm goto'
constructs, as outlined here:http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
Implement a workaround suggested by Jakub Jelinek.
Reported-and-tested-by: Fengguang Wu
Reported-by: Oleg Nesterov
Reported-by: Peter Zijlstra
Suggested-by: Jakub Jelinek
Reviewed-by: Richard Henderson
Cc: Linus Torvalds
Cc: Andrew Morton
Cc:
Signed-off-by: Ingo Molnar -
This reverts commit 81b5c7bc8de3e6f63419139c2fc91bf81dea8a7d.
Adding drm/i915 into the vga arbiter chain means that X (in a piece of
well-meant paranoia) will do a get/put on the vga decoding around
_every_ accel call down into the ddx. Which results in some nice
performance disasters [1]. This really breaks userspace, by disabling
DRI for everyone, and stops OpenGL from working, this isn't limited
to just the i915 but both the integrated and discrete GPUs on
multi-gpu systems, in other words this causes untold worlds of pain,Ville tried to come up with a Great Hack to fiddle the required VGA
I/O ops behind everyone's back using stop_machine, but that didn't
really work out [2]. Given that we're fairly late in the -rc stage for
such games let's just revert this all.One thing we might want to keep is to delay the disabling of the vga
decoding until the fbdev emulation and the fbcon screen is set up. If
we kill vga mem decoding beforehand fbcon can end up with a white
square in the top-left corner it tried to save from the vga memory for
a seamless transition. And we have bug reports on older platforms
which seem to match these symptoms.But again that's something to play around with in -next.
References: [1] http://lists.x.org/archives/xorg-devel/2013-September/037763.html
References: [2] http://www.spinics.net/lists/intel-gfx/msg34062.html
Cc: Alex Williamson
Cc: Ville Syrjälä
Cc: Chris Wilson
Signed-off-by: Daniel Vetter
Signed-off-by: Dave Airlie -
Pull /dev/random changes from Ted Ts'o:
"These patches are designed to enable improvements to /dev/random for
non-x86 platforms, in particular MIPS and ARM"* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: allow architectures to optionally define random_get_entropy()
random: run random_int_secret_init() run after all late_initcalls -
Allow architectures which have a disabled get_cycles() function to
provide a random_get_entropy() function which provides a fine-grained,
rapidly changing counter that can be used by the /dev/random driver.For example, an architecture might have a rapidly changing register
used to control random TLB cache eviction, or DRAM refresh that
doesn't meet the requirements of get_cycles(), but which is good
enough for the needs of the random driver.Signed-off-by: "Theodore Ts'o"
Cc: stable@vger.kernel.org -
It's helpful for a driver to put the pci slot name in its interrupt
names, so /proc/interrupts will show the pci slot of the device.Signed-off-by: Sagi Grimberg
Signed-off-by: Eli Cohen
Signed-off-by: Roland Dreier -
The layout of struct health_buffer was not according to firmware
specification. Fix it to comply.Signed-off-by: Eli Cohen
Signed-off-by: Roland Dreier -
Checksum calculations consume CPU resources and can be significant to
the rate of resource creation/destruction.Signed-off-by: Eli Cohen
Signed-off-by: Roland Dreier
09 Oct, 2013
2 commits
-
The wake-up interrupt bit is available on omap3/4/5 processors
unlike what we claim. Without fixing it we cannot use it on
omap3 and the system configured for wake-up events will just
hang on wake-up.Cc: Grygorii Strashko
Cc: Benoît Cousson
Cc: devicetree@vger.kernel.org
Signed-off-by: Tony Lindgren -
Pull perf fixes from Ingo Molnar:
"Various fixlets:On the kernel side:
- fix a race
- fix a bug in the handling of the perf ring-buffer data pageOn the tooling side:
- fix the handling of certain corrupted perf.data files
- fix a bug in 'perf probe'
- fix a bug in 'perf record + perf sched'
- fix a bug in 'make install'
- fix a bug in libaudit feature-detection on certain distros"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf session: Fix infinite loop on invalid perf.data file
perf tools: Fix installation of libexec components
perf probe: Fix to find line information for probe list
perf tools: Fix libaudit test
perf stat: Set child_pid after perf_evlist__prepare_workload()
perf tools: Add default handler for mmap2 events
perf/x86: Clean up cap_user_time* setting
perf: Fix perf_pmu_migrate_context
08 Oct, 2013
1 commit
-
Pull HID fixes from Jiri Kosina:
- fix for hidraw reference counting regression, by Manoj Chourasia
- fix for minor number allocation for uhid, by David Herrmann
- other small unsorted fixes / device ID additions* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: wiimote: fix FF deadlock
HID: add Holtek USB ID 04d9:a081 SHARKOON DarkGlider
HID: hidraw: close underlying device at removal of last reader
HID: roccat: Fix "cannot create duplicate filename" problems
HID: uhid: allocate static minor
05 Oct, 2013
1 commit
-
Pull iommu fixes from Joerg Roedel:
"A couple of fixes from the IOMMU side:- some small fixes for the new ARM-SMMU driver
- a register offset correction for VT-d
- add MAINTAINERS entry for drivers/iommuOverall no really big or intrusive changes"
* tag 'iommu-fixes-v3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
x86/iommu: correct ICS register offset
MAINTAINERS: add overall IOMMU section
iommu/arm-smmu: don't enable SMMU device until probing has completed
iommu/arm-smmu: fix iommu_present() test in init
iommu/arm-smmu: fix a signedness bug
04 Oct, 2013
1 commit
-
While auditing the list_entry usage due to a trinity bug I found that
perf_pmu_migrate_context violates the rules for
perf_event::event_entry.The problem is that perf_event::event_entry is a RCU list element, and
hence we must wait for a full RCU grace period before re-using the
element after deletion.Therefore the usage in perf_pmu_migrate_context() which re-uses the
entry immediately is broken. For now introduce another list_head into
perf_event for this specific usage.This doesn't actually fix the trinity report because that never goes
through this code.Signed-off-by: Peter Zijlstra
Link: http://lkml.kernel.org/n/tip-mkj72lxagw1z8fvjm648iznw@git.kernel.org
Signed-off-by: Ingo Molnar
03 Oct, 2013
1 commit
-
The include/asm-generic/hugetlb.h stubs that just vector huge_pte_*()
calls to the pte_*() implementations won't work in certain situations.x86 and sparc, for example, return "unsigned long" from the bit
checks, and just go "return pte_val(pte) & PTE_BIT_FOO;"But since huge_pte_*() returns 'int', if any high bits on 64-bit are
relevant, they get chopped off.The net effect is that we can loop forever trying to COW a huge page,
because the huge_pte_write() check signals false all the time.Reported-by: Gurudas Pai
Tested-by: Gurudas Pai
Signed-off-by: David S. Miller
Acked-by: David Rientjes
02 Oct, 2013
2 commits
-
Pull networking changes from David Miller:
1) Multiply in netfilter IPVS can overflow when calculating destination
weight. From Simon Kirby.2) Use after free fixes in IPVS from Julian Anastasov.
3) SFC driver bug fixes from Daniel Pieczko.
4) Memory leak in pcan_usb_core failure paths, from Alexey Khoroshilov.
5) Locking and encapsulation fixes to serial line CAN driver, from
Andrew Naujoks.6) Duplex and VF handling fixes to bnx2x driver from Yaniv Rosner,
Eilon Greenstein, and Ariel Elior.7) In lapb, if no other packets are outstanding, T1 timeouts actually
stall things and no packet gets sent. Fix from Josselin Costanzi.8) ICMP redirects should not make it to the socket error queues, from
Duan Jiong.9) Fix bugs in skge DMA mapping error handling, from Nikulas Patocka.
10) Fix setting of VLAN priority field on via-rhine driver, from Roget
Luethi.11) Fix TX stalls and VLAN promisc programming in be2net driver from
Ajit Khaparde.12) Packet padding doesn't get handled correctly in new usbnet SG
support code, from Ming Lei.13) Fix races in netdevice teardown wrt. network namespace closing.
From Eric W. Biederman.14) Fix potential missed initialization of net_secret if not TCP
connections are openned. From Eric Dumazet.15) Cinterion PLXX product ID in qmi_wwan driver is wrong, from
Aleksander Morgado.16) skb_cow_head() can change skb->data and thus packet header pointers,
don't use stale ip_hdr reference in ip_tunnel code.17) Backend state transition handling fixes in xen-netback, from Paul
Durrant.18) Packet offset for AH protocol is handled wrong in flow dissector,
from Eric Dumazet.19) Taking down an fq packet scheduler instance can leave stale packets
in the queues, fix from Eric Dumazet.20) Fix performance regressions introduced by TCP Small Queues. From
Eric Dumazet.21) IPV6 GRE tunneling code calculates max_headroom incorrectly, from
Hannes Frederic Sowa.22) Multicast timer handlers in ipv4 and ipv6 can be the last and final
reference to the ipv4/ipv6 specific network device state, so use the
reference put that will check and release the object if the
reference hits zero. From Salam Noureddine.23) Fix memory corruption in ip_tunnel driver, and use skb_push()
instead of __skb_push() so that similar bugs are less hard to find.
From Steffen Klassert.24) Add forgotten hookup of rtnl_ops in SIT and ip6tnl drivers, from
Nicolas Dichtel.25) fq scheduler doesn't accurately rate limit in certain circumstances,
from Eric Dumazet.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits)
pkt_sched: fq: rate limiting improvements
ip6tnl: allow to use rtnl ops on fb tunnel
sit: allow to use rtnl ops on fb tunnel
ip_tunnel: Remove double unregister of the fallback device
ip_tunnel_core: Change __skb_push back to skb_push
ip_tunnel: Add fallback tunnels to the hash lists
ip_tunnel: Fix a memory corruption in ip_tunnel_xmit
qlcnic: Fix SR-IOV configuration
ll_temac: Reset dma descriptors indexes on ndo_open
skbuff: size of hole is wrong in a comment
ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put
ipv4 igmp: use in_dev_put in timer handlers instead of __in_dev_put
ethernet: moxa: fix incorrect placement of __initdata tag
ipv6: gre: correct calculation of max_headroom
powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file
Revert "powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file"
bonding: Fix broken promiscuity reference counting issue
tcp: TSQ can use a dynamic limit
dm9601: fix IFF_ALLMULTI handling
pkt_sched: fq: qdisc dismantle fixes
... -
Pablo Neira Ayuso says:
====================
The following patchset contains Netfilter/IPVS fixes for your net
tree, they are:* Fix BUG_ON splat due to malformed TCP packets seen by synproxy, from
Patrick McHardy.* Fix possible weight overflow in lblc and lblcr schedulers due to
32-bits arithmetics, from Simon Kirby.* Fix possible memory access race in the lblc and lblcr schedulers,
introduced when it was converted to use RCU, two patches from
Julian Anastasov.* Fix hard dependency on CPU 0 when reading per-cpu stats in the
rate estimator, from Julian Anastasov.* Fix race that may lead to object use after release, when invoking
ipvsadm -C && ipvsadm -R, introduced when adding RCU, from Julian
Anastasov.
====================Signed-off-by: David S. Miller
01 Oct, 2013
6 commits
-
Since commit c93bdd0e03e8 ("netvm: allow skb allocation to use PFMEMALLOC
reserves"), hole size is one bit less than what is written in the comment.Signed-off-by: Nicolas Dichtel
Signed-off-by: David S. Miller -
Pull NFS client bugfixes from Trond Myklebust:
- Stable fix for Oopses in the pNFS files layout driver
- Fix a regression when doing a non-exclusive file create on NFSv4.x
- NFSv4.1 security negotiation fixes when looking up the root
filesystem
- Fix a memory ordering issue in the pNFS files layout driver* tag 'nfs-for-3.12-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: Give "flavor" an initial value to fix a compile warning
NFSv4.1: try SECINFO_NO_NAME flavs until one works
NFSv4.1: Ensure memory ordering between nfs4_ds_connect and nfs4_fl_prepare_ds
NFSv4.1: nfs4_fl_prepare_ds - fix bugs when the connect attempt fails
NFSv4: Honour the 'opened' parameter in the atomic_open() filesystem method -
Merge misc fixes from Andrew Morton.
* emailed patches from Andrew Morton : (22 commits)
pidns: fix free_pid() to handle the first fork failure
ipc,msg: prevent race with rmid in msgsnd,msgrcv
ipc/sem.c: update sem_otime for all operations
mm/hwpoison: fix the lack of one reference count against poisoned page
mm/hwpoison: fix false report on 2nd attempt at page recovery
mm/hwpoison: fix test for a transparent huge page
mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood
block: change config option name for cmdline partition parsing
mm/mlock.c: prevent walking off the end of a pagetable in no-pmd configuration
mm: avoid reinserting isolated balloon pages into LRU lists
arch/parisc/mm/fault.c: fix uninitialized variable usage
include/asm-generic/vtime.h: avoid zero-length file
nilfs2: fix issue with race condition of competition between segments for dirty blocks
Documentation/kernel-parameters.txt: replace kernelcore with Movable
mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored
kernel/kmod.c: check for NULL in call_usermodehelper_exec()
ipc/sem.c: synchronize the proc interface
ipc/sem.c: optimize sem_lock()
ipc/sem.c: fix race in sem_lock()
mm/compaction.c: periodically schedule when freeing pages
... -
Isolated balloon pages can wrongly end up in LRU lists when
migrate_pages() finishes its round without draining all the isolated
page list.The same issue can happen when reclaim_clean_pages_from_list() tries to
reclaim pages from an isolated page list, before migration, in the CMA
path. Such balloon page leak opens a race window against LRU lists
shrinkers that leads us to the following kernel panic:BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
IP: [] shrink_page_list+0x24e/0x897
PGD 3cda2067 PUD 3d713067 PMD 0
Oops: 0000 [#1] SMP
CPU: 0 PID: 340 Comm: kswapd0 Not tainted 3.12.0-rc1-22626-g4367597 #87
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
RIP: shrink_page_list+0x24e/0x897
RSP: 0000:ffff88003da499b8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88003e82bd60 RCX: 00000000000657d5
RDX: 0000000000000000 RSI: 000000000000031f RDI: ffff88003e82bd40
RBP: ffff88003da49ab0 R08: 0000000000000001 R09: 0000000081121a45
R10: ffffffff81121a45 R11: ffff88003c4a9a28 R12: ffff88003e82bd40
R13: ffff88003da0e800 R14: 0000000000000001 R15: ffff88003da49d58
FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000067d9000 CR3: 000000003ace5000 CR4: 00000000000407b0
Call Trace:
shrink_inactive_list+0x240/0x3de
shrink_lruvec+0x3e0/0x566
__shrink_zone+0x94/0x178
shrink_zone+0x3a/0x82
balance_pgdat+0x32a/0x4c2
kswapd+0x2f0/0x372
kthread+0xa2/0xaa
ret_from_fork+0x7c/0xb0
Code: 80 7d 8f 01 48 83 95 68 ff ff ff 00 4c 89 e7 e8 5a 7b 00 00 48 85 c0 49 89 c5 75 08 80 7d 8f 00 74 3e eb 31 48 8b 80 18 01 00 00 8b 74 0d 48 8b 78 30 be 02 00 00 00 ff d2 eb
RIP [] shrink_page_list+0x24e/0x897
RSP
CR2: 0000000000000028
---[ end trace 703d2451af6ffbfd ]---
Kernel panic - not syncing: Fatal exceptionThis patch fixes the issue, by assuring the proper tests are made at
putback_movable_pages() & reclaim_clean_pages_from_list() to avoid
isolated balloon pages being wrongly reinserted in LRU lists.[akpm@linux-foundation.org: clarify awkward comment text]
Signed-off-by: Rafael Aquini
Reported-by: Luiz Capitulino
Tested-by: Luiz Capitulino
Cc: Mel Gorman
Cc: Rik van Riel
Cc: Hugh Dickins
Cc: Johannes Weiner
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
patch(1) can't handle zero-length files - it appears to simply not create
the file, so my powerpc build fails.Put something in here to make life easier.
Cc: Hugh Dickins
Cc: Frederic Weisbecker
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use of RCU api makes vxlan code easier to understand. It also
fixes bug due to missing ACCESS_ONCE() on sk_user_data dereference.
In rare case without ACCESS_ONCE() compiler might omit vs on
sk_user_data dereference.
Compiler can use vs as alias for sk->sk_user_data, resulting in
multiple sk_user_data dereference in rcu read context which
could change.CC: Jesse Gross
Signed-off-by: Pravin B Shelar
Signed-off-by: David S. Miller
30 Sep, 2013
4 commits
-
TCP packets hitting the SYN proxy through the SYNPROXY target are not
validated by TCP conntrack. When th->doff is below 5, an underflow happens
when calculating the options length, causing skb_header_pointer() to
return NULL and triggering the BUG_ON().Handle this case gracefully by checking for NULL instead of using BUG_ON().
Reported-by: Martin Topholm
Tested-by: Martin Topholm
Signed-off-by: Patrick McHardy
Signed-off-by: Pablo Neira Ayuso -
Pull char/misc driver fixes from Greg KH:
"Here are some HyperV and MEI driver fixes for 3.12-rc3. They resolve
some issues that people have been reporting for them"* tag 'char-misc-3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Drivers: hv: vmbus: Terminate vmbus version negotiation on timeout
Drivers: hv: util: Correctly support ws2008R2 and earlier
mei: cancel stall timers in mei_reset
mei: bus: stop wait for read during cl state transition
mei: make me client counters less error prone -
Pull drm fixes from Dave Airlie:
"Nothing too major, radeon still has some dpm changes for off by
default.Radeon, intel, msm:
- radeon: a few more dpm fixes (still off by default), uvd fixes
- i915: runtime warn backtrace and regression fix
- msm: iommu changes fallout"* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (27 commits)
drm/msm: use drm_gem_dumb_destroy helper
drm/msm: deal with mach/iommu.h removal
drm/msm: Remove iommu include from mdp4_kms.c
drm/msm: Odd PTR_ERR usage
drm/i915: Fix up usage of SHRINK_STOP
drm/radeon: fix hdmi audio on DCE3.0/3.1 asics
drm/i915: preserve pipe A quirk in i9xx_set_pipeconf
drm/i915/tv: clear adjusted_mode.flags
drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER
drm/radeon/cik: fix overflow in vram fetch
drm/radeon: add missing hdmi callbacks for rv6xx
drm/i915: Use a temporary va_list for two-pass string handling
drm/radeon/uvd: lower msg&fb buffer requirements on UVD3
drm/radeon: disable tests/benchmarks if accel is disabled
drm/radeon: don't set default clocks for SI when DPM is disabled
drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables
drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables
drm/radeon/dpm: fetch the max clk from voltage dep tables helper
...
29 Sep, 2013
6 commits
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A host might need net_secret[] and never open a single socket.
Problem added in commit aebda156a570782
("net: defer net_secret[] initialization")Based on prior patch from Hannes Frederic Sowa.
Reported-by: Hannes Frederic Sowa
Signed-off-by: Eric Dumazet
Acked-by: Hannes Frederic Sowa
Signed-off-by: David S. Miller -
There is currently serialization network namespaces exiting and
network devices exiting as the final part of netdev_run_todo does not
happen under the rtnl_lock. This is compounded by the fact that the
only list of devices unregistering in netdev_run_todo is local to the
netdev_run_todo.This lack of serialization in extreme cases results in network devices
unregistering in netdev_run_todo after the loopback device of their
network namespace has been freed (making dst_ifdown unsafe), and after
the their network namespace has exited (making the NETDEV_UNREGISTER,
and NETDEV_UNREGISTER_FINAL callbacks unsafe).Add the missing serialization by a per network namespace count of how
many network devices are unregistering and having a wait queue that is
woken up whenever the count is decreased. The count and wait queue
allow default_device_exit_batch to wait until all of the unregistration
activity for a network namespace has finished before proceeding to
unregister the loopback device and then allowing the network namespace
to exit.Only a single global wait queue is used because there is a single global
lock, and there is a single waiter, per network namespace wait queues
would be a waste of resources.The per network namespace count of unregistering devices gives a
progress guarantee because the number of network devices unregistering
in an exiting network namespace must ultimately drop to zero (assuming
network device unregistration completes).The basic logic remains the same as in v1. This patch is now half
comment and half rtnl_lock_unregistering an expanded version of
wait_event performs no extra work in the common case where no network
devices are unregistering when we get to default_device_exit_batch.Reported-by: Francesco Ruggeri
Signed-off-by: "Eric W. Biederman"
Signed-off-by: David S. Miller -
When a router is doing DNAT for 6to4/6rd packets the latest
anti-spoofing commit 218774dc ("ipv6: add anti-spoofing checks for
6to4 and 6rd") will drop them because the IPv6 address embedded does
not match the IPv4 destination. This patch will allow them to pass by
testing if we have an address that matches on 6to4/6rd interface. I
have been hit by this problem using Fedora and IPV6TO4_IPV4ADDR.
Also, log the dropped packets (with rate limit).Signed-off-by: Catalin(ux) M. BOIE
Acked-by: Hannes Frederic Sowa
Signed-off-by: David S. Miller -
Commit 638c5115a7949(USBNET: support DMA SG) introduces DMA SG
if the usb host controller is capable of building packet from
discontinuous buffers, but missed handling padding packet when
building DMA SG.This patch attachs the pre-allocated padding packet at the
end of the sg list, so padding packet can be sent to device
if drivers require that.Reported-by: David Laight
Acked-by: Oliver Neukum
Signed-off-by: Ming Lei
Signed-off-by: David S. Miller -
Pull s390 lockref enablement from Heiko Carstens:
"Enabling the new lockless lockref variant on s390 would have been
trivial until Tony Luck added a cpu_relax() call into the
CMPXCHG_LOOP(), with commit d472d9d98b46 ("lockref: Relax in cmpxchg
loop")As already mentioned cpu_relax() is very expensive on s390 since it
yields() the current virtual cpu. So we are talking of several
thousand cycles. Considering this enabling the lockless lockref
variant would contradict the intention of the new semantics. And also
some quick measurements show performance regressions of 50% and more.Simply removing the cpu_relax() call again seems also not very
desireable since Waiman Long reported that for some workloads the call
improved performance by 5%."* 'lockref' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: enable ARCH_USE_CMPXCHG_LOCKREF
lockref: use arch_mutex_cpu_relax() in CMPXCHG_LOOP()
mutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef -
Pull DeviceTree fixes from Rob Herring:
"Clean-up to fix some warnings for !OF builds and spelling fixes in
docs:- Clean-up openrisc prom.h
- Fix warnings caused by of_irq.h ifdefs
- Spelling fix for Synopsys"* tag 'devicetree-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dts: Fix misspelling of Synopsys
of: clean-up ifdefs in of_irq.h
openrisc: clean-up prom.h
28 Sep, 2013
1 commit
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Linus suggested to replace
#ifndef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX
#define arch_mutex_cpu_relax() cpu_relax()
#endifwith just a simple
#ifndef arch_mutex_cpu_relax
# define arch_mutex_cpu_relax() cpu_relax()
#endifto get rid of CONFIG_HAVE_CPU_RELAX_SIMPLE. So architectures can
simply define arch_mutex_cpu_relax if they want an architecture
specific function instead of having to add a select statement in
their Kconfig in addition.Suggested-by: Linus Torvalds
Signed-off-by: Heiko Carstens
