02 Jun, 2014
1 commit
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Pull MIPS fixes from Ralf Baechle:
"A fair number of fixes across the field. Nothing terribly
complicated; the one liners in below changelog should be fairly
descriptive.Noteworthy is the SB1 change which the result of changes to binutils
resulting in one big gas warning for most files being assembled as
well as the asid_cache and branch emulation fixes which fix corruption
or possible uninteded behaviour of kernel or application code. The
remainder of fixes are more platforms or subsystem specific"* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: R46000: Fix Micro-assembler field overflow for R4600 V2
MIPS: ptrace: Avoid smp_processor_id() in preemptible code
MIPS: Lemote 2F: cs5536: mfgpt: use raw locks
MIPS: SB1: Fix excessive kernel warnings.
MIPS: RC32434: fix broken PCI resource initialization
MIPS: malta: memory.c: Initialize the 'memsize' variable
MIPS: Fix typo when reporting cache and ftlb errors for ImgTec cores
MIPS: Fix inconsistancy of __NR_Linux_syscalls value
MIPS: Fix branch emulation of branch likely instructions.
MIPS: Fix a typo error in AUDIT_ARCH definition
MIPS: Change type of asid_cache to unsigned long
30 May, 2014
1 commit
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Pull ARM fixes from Russell King:
"The usual random collection of relatively small ARM fixes"* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8063/1: bL_switcher: fix individual online status reporting of removed CPUs
ARM: 8064/1: fix v7-M signal return
ARM: 8057/1: amba: Add Qualcomm vendor ID.
ARM: 8052/1: unwind: Fix handling of "Pop r4-r[4+nnn],r14" opcode
ARM: 8051/1: put_user: fix possible data corruption in put_user
ARM: 8048/1: fix v7-M setup stack location
28 May, 2014
1 commit
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Pull slave-dmaengine fixes from Vinod Koul:
"We have three small fixes.First one from Andy reverts the devm_request irq as we need to ensure
the tasklet is killed after irq is freed, so we need to do free irq in
our code. Other two from Arnd are fixing the compilation issue in
omap and sa11x0 drivers with ARM randconfigs"* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: sa11x0: remove broken #ifdef
dmaengine: omap: hide filter_fn for built-in drivers
dmaengine: dw: went back to plain {request,free}_irq() calls
26 May, 2014
1 commit
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This patch adds Qualcomm amba vendor Id to the list. This ID is used in mmci driver. The ID selected in same lines like 0x41 is "A" for ARM, 0x51 is "Q" for Qualcomm.
As there are no physical register on Qcom SOC for amba vendor id, this is a fake ID assigned based on "Q" prefix from Qualcomm.
Signed-off-by: Srinivas Kandagatla
Acked-by: Linus Walleij
Signed-off-by: Russell King
24 May, 2014
5 commits
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Pull dmaengine fixes from Dan Williams:
"Two fixes for -stable:- async_mult() sometimes maps less buffers than initially requested.
We end up freeing dmaengine_unmap_data on an invalid pool.- mv_xor: register write ordering fix"
* tag 'dmaengine-fixes-3.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine:
dmaengine: fix dmaengine_unmap failure
dma: mv_xor: Flush descriptors before activating a channel -
Pull networking fixes from David Miller:
"It looks like a sizeble collection but this is nearly 3 weeks of bug
fixing while you were away.1) Fix crashes over IPSEC tunnels with NAT, the latter can reroute
the packet through a non-IPSEC protected path and the code has to
be able to handle SKBs attached to routes lacking an attached xfrm
state. From Steffen Klassert.2) Fix OOPSs in ipv4 and ipv6 ipsec layers for unsupported
sub-protocols, also from Steffen Klassert.3) Set local_df on fragmented netfilter skbs otherwise we won't be
able to forward successfully, from Florian Westphal.4) cdc_mbim ipv6 neighbour code does __vlan_find_dev_deep without
holding RCU lock, from Bjorn Mork.5) local_df test in ip_may_fragment is inverted, from Florian
Westphal.6) jme driver doesn't check for DMA mapping failures, from Neil
Horman.7) qlogic driver doesn't calculate number of TX queues properly, from
Shahed Shaikh.8) fib_info_cnt can drift irreversibly positive if we fail to
allocate the fi->fib_metrics array, from Sergey Popovich.9) Fix use after free in ip6_route_me_harder(), also from Sergey
Popovich.10) When SYSCTL is disabled, we don't handle local_port_range and
ping_group_range defaults properly at all, from Cong Wang.11) Unaccelerated VLAN tagged frames improperly handled by cdc_mbim
driver, fix from Bjorn Mork.12) cassini driver needs nested lock annotations for TX locking, from
Emil Goode.13) On init error ipv6 VTI driver can unregister pernet ops twice,
oops. Fix from Mahtias Krause.14) If macvlan device is down, don't propagate IFF_ALLMULTI changes,
from Peter Christensen.15) Missing NULL pointer check while parsing netlink config options in
ip6_tnl_validate(). From Susant Sahani.16) Fix handling of neighbour entries during ipv6 router reachability
probing, from Duan Jiong.17) x86 and s390 JIT address randomization has some address
calculation bugs leading to crashes, from Alexei Starovoitov and
Heiko Carstens.18) Clear up those uglies with nop patching and net_get_random_once(),
from Hannes Frederic Sowa.19) Option length miscalculated in ip6_append_data(), fix also from
Hannes Frederic Sowa.20) A while ago we fixed a race during device unregistry when a
namespace went down, turns out there is a second place that needs
similar protection. From Cong Wang.21) In the new Altera TSE driver multicast filtering isn't working,
disable it and just use promisc mode until the cause is found.
From Vince Bridgers.22) When we disable router enabling in ipv6 we have to flush the
cached routes explicitly, from Duan Jiong.23) NBMA tunnels should not cache routes on the tunnel object because
the key is variable, from Timo Teräs.24) With stacked devices GRO information in skb->cb[] can be not setup
properly, make sure it is in all code paths. From Eric Dumazet.25) Really fix stacked vlan locking, multiple levels of nesting with
intervening non-vlan devices are possible. From Vlad Yasevich.26) Fallback ipip tunnel device's mtu is not setup properly, from
Steffen Klassert.27) The packet scheduler's tcindex filter can crash because we
structure copy objects with list_head's inside, oops. From Cong
Wang.28) Fix CHECKSUM_COMPLETE handling for ipv6 GRE tunnels, from Eric
Dumazet.29) In some configurations 'itag' in __mkroute_input() can end up
being used uninitialized because of how fib_validate_source()
works. Fix it by explitly initializing itag to zero like all the
other fib_validate_source() callers do, from Li RongQing"* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
batman: fix a bogus warning from batadv_is_on_batman_iface()
ipv4: initialise the itag variable in __mkroute_input
bonding: Send ALB learning packets using the right source
bonding: Don't assume 802.1Q when sending alb learning packets.
net: doc: Update references to skb->rxhash
stmmac: Remove unbalanced clk_disable call
ipv6: gro: fix CHECKSUM_COMPLETE support
net_sched: fix an oops in tcindex filter
can: peak_pci: prevent use after free at netdev removal
ip_tunnel: Initialize the fallback device properly
vlan: Fix build error wth vlan_get_encap_level()
can: c_can: remove obsolete STRICT_FRAME_ORDERING Kconfig option
MAINTAINERS: Pravin Shelar is Open vSwitch maintainer.
bnx2x: Convert return 0 to return rc
bonding: Fix alb mode to only use first level vlans.
bonding: Fix stacked device detection in arp monitoring
macvlan: Fix lockdep warnings with stacked macvlan devices
vlan: Fix lockdep warning with stacked vlan devices.
net: Allow for more then a single subclass for netif_addr_lock
net: Find the nesting level of a given device by type.
... -
Pull scheduler fixes from Ingo Molnar:
"The biggest commit is an irqtime accounting loop latency fix, the rest
are misc fixes all over the place: deadline scheduling, docs, numa,
balancer and a bad to-idle latency fix"* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/numa: Initialize newidle balance stats in sd_numa_init()
sched: Fix updating rq->max_idle_balance_cost and rq->next_balance in idle_balance()
sched: Skip double execution of pick_next_task_fair()
sched: Use CPUPRI_NR_PRIORITIES instead of MAX_RT_PRIO in cpupri check
sched/deadline: Fix memory leak
sched/deadline: Fix sched_yield() behavior
sched: Sanitize irq accounting madness
sched/docbook: Fix 'make htmldocs' warnings caused by missing description -
Pull perf fixes from Ingo Molnar:
"The biggest changes are fixes for races that kept triggering Trinity
crashes, plus liblockdep build fixes and smaller misc fixes.The liblockdep bits in perf/urgent are a pull mistake - they should
have been in locking/urgent - but by the time I noticed other commits
were added and testing was done :-/ Sorry about that"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix a race between ring_buffer_detach() and ring_buffer_attach()
perf: Prevent false warning in perf_swevent_add
perf: Limit perf_event_attr::sample_period to 63 bits
tools/liblockdep: Remove all build files when doing make clean
tools/liblockdep: Build liblockdep from tools/Makefile
perf/x86/intel: Fix Silvermont's event constraints
perf: Fix perf_event_init_context()
perf: Fix race in removing an event -
In commit ad86622b478e ("wait: swap EXIT_ZOMBIE and EXIT_DEAD to hide
EXIT_TRACE from user-space") the order of task state definitions were
changed: EXIT_DEAD and EXIT_ZOMBIE were swapped. Though the charterers
for the states in TASK_STATE_TO_CHAR_STR string were not updated. This
patch synchronizes the string to the order of definitions.Signed-off-by: Masatake YAMATO
Cc: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 May, 2014
3 commits
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Missing a "|" in AUDIT_ARCH_MIPSEL64N32 macro definition.
Signed-off-by: Huacai Chen
Reviewed-by: Markos Chandras
Cc: John Crispin
Cc: Steven J. Hill
Cc: Aurelien Jarno
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang
Cc: Zhangjin Wu
Patchwork: https://patchwork.linux-mips.org/patch/6978/
Signed-off-by: Ralf Baechle -
The count which is used to get_unmap_data maybe not the same as the
count computed in dmaengine_unmap which causes to free data in a
wrong pool.This patch fixes this issue by keeping the map count with unmap_data
structure and use this count to get the pool.Cc:
Signed-off-by: Xuelin Shi
Signed-off-by: Dan Williams -
Pull renameat2 arch support from Miklos Szeredi:
"I've collected architecture patches for the renameat2 syscall that
maintainers acked and/or asked me to queue.This adds architecture support for the renameat2 syscall to m68k,
parisc, ia64 and through asm-generic to arc, arm64, c6x, hexagon,
metag, openrisc, score, tile, unicore32"* 'renameat2' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
scripts/checksyscalls.sh: Make renameat optional
asm-generic: Add renameat2 syscall
ia64: add renameat2 syscall
parisc: add renameat2 syscall
m68k: add renameat2 syscall
21 May, 2014
4 commits
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Pull driver core fixes from Greg KH:
"Here are two driver core (well, sysfs) fixes for 3.15-rc6 that resolve
some reported issues and a regression from 3.13"* tag 'driver-core-3.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
sysfs: make sure read buffer is zeroed
kernfs, sysfs, cgroup: restrict extra perm check on open to sysfs -
Pull more cgroup fixes from Tejun Heo:
"Three more patches to fix cgroup_freezer breakage due to the recent
cgroup internal locking changes - an operation cgroup_freezer was
using now requires sleepable context and cgroup_freezer was invoking
that while holding a spin lock. cgroup_freezer was using an overly
elaborate hierarchical locking scheme.While it's possible to convert the hierarchical spinlocks directly to
mutexes, this patch simplifies the overall locking so that it uses a
global mutex. This has the added benefit of avoiding iterating
potentially huge number of tasks under a spinlock. While the patch is
on the larger side in the devel cycle, the changes made are mostly
straight-forward and the locking logic is a lot simpler afterwards"* 'for-3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: fix rcu_read_lock() leak in update_if_frozen()
cgroup_freezer: replace freezer->lock with freezer_mutex
cgroup: introduce task_css_is_root() -
Pull device tree fixes from Grant Likely:
"Drivercore bugfixes for v3.15This branch contains bug fixes important to get into v3.15. There is
a fix for modifying properties seen during early boot, a fix for an
incorrect prototype when CONFIG_OF=n, and a couple of corrections to
device tree memory nodes on a few platforms"* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux:
mips: dts: Fix missing device_type="memory" property in memory nodes
arm: dts: Fix missing device_type="memory" for ste-ccu8540
of: fix CONFIG_OF=n prototype of of_node_full_name()
of: make of_update_property() usable earlier in the boot process -
It is not possible to reference the omap_dma_filter_fn filter
function from a built-in driver if the dmaengine driver itself
is a loadable module, which is a valid configuration otherwise.This provides only the dummy alternative if the function
is referenced by a built-in driver to allow a successful
build. The filter function is only required by ATAGS based
platforms, which will continue to be broken after this change
for the bogus configuration. When booting from DT, with the
dma channels correctly listed there, it will work fine.Signed-off-by: Arnd Bergmann
Acked-by: Tony Lindgren
Cc: Russell King
Cc: Vinod Koul
Cc: dmaengine@vger.kernel.org
Signed-off-by: Vinod Koul
20 May, 2014
5 commits
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The new function vlan_get_encap_level() uses vlan_dev_priv()
which is only conditionally avaialble when VLAN support is
enabled. Make vlan_get_encap_level() conditionally available
as well.Fixes: 44a4085538c8 ("bonding: Fix stacked device detection in arp monitoring")
Reported-by: Stephen Rothwell
CC: Stephen Rothwell
Signed-off-by: Vlad Yasevich
Signed-off-by: David S. Miller -
Add the renameat2 syscall to the generic syscall list, which is used by the
following architectures: arc, arm64, c6x, hexagon, metag, openrisc, score,
tile, unicore32.Signed-off-by: James Hogan
Acked-by: Arnd Bergmann
Signed-off-by: Miklos Szeredi
Cc: linux-arch@vger.kernel.org
Cc: Vineet Gupta
Cc: Catalin Marinas
Cc: Will Deacon
Cc: linux-arm-kernel@lists.infradead.org
Cc: Mark Salter
Cc: Aurelien Jacquiot
Cc: Richard Kuo
Cc: linux-hexagon@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Cc: Jonas Bonn
Cc: Chen Liqin
Cc: Lennox Wu
Cc: Chris Metcalf
Cc: Guan Xuetao -
Pull MIPS fixes from Ralf Baechle:
"MIPS fixes for various loose ends:- Fix workarounds for R4000 erratum.
- Patch up DEC, Siemens-Nixdorf and Loongson hardware support.
- Wire up renameat2 syscall.
- Delete unused file - it was causing false warnings from maintenance
scripts.
- Revert a patch because it's functionality is now implemented twice
which causes superfluous /proc/cpuinfo output.
- Fix a microMIPS regression"* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: mm: Fix broken microMIPS kernel regression.
MIPS: Add new AUDIT_ARCH token for the N32 ABI on MIPS64
MIPS: Wire up renameat2 syscall.
MIPS: inst.h: Rename BITFIELD_FIELD to __BITFIELD_FIELD.
MIPS: Remove file missed when removing rm9k support a while ago.
MIPS/loongson2_cpufreq: Fix CPU clock rate setting
MIPS: Loongson: No need to select GENERIC_HARDIRQS_NO__DO_IRQ
MIPS: csum_partial.S CPU_DADDI_WORKAROUNDS bug fix
MIPS: __strncpy_from_user_asm CPU_DADDI_WORKAROUNDS bug fix
MIPS: __delay CPU_DADDI_WORKAROUNDS bug fix
MIPS: DEC/SNI: O32 wrapper stack switching fixes
MIPS: DEC: Bus error handler fixes
MAINTAINERS: TURBOchannel: Update entry
Revert "MIPS: MT: proc: Add support for printing VPE and TC ids" -
Pull Metag architecture and related fixes from James Hogan:
"Mostly fixes for metag and parisc relating to upgrowing stacks.- Fix missing compiler barriers in metag memory barriers.
- Fix BUG_ON on metag when RLIMIT_STACK hard limit is increased
beyond safe value.
- Make maximum stack size configurable. This reduces the default
user stack size back to 80MB (especially on parisc after their
removal of _STK_LIM_MAX override). This only affects metag and
parisc.
- Remove metag _STK_LIM_MAX override to match other arches and follow
parisc, now that it is safe to do so (due to the BUG_ON fix
mentioned above).
- Finally now that both metag and parisc _STK_LIM_MAX overrides have
been removed, it makes sense to remove _STK_LIM_MAX altogether"* tag 'metag-for-v3.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
asm-generic: remove _STK_LIM_MAX
metag: Remove _STK_LIM_MAX override
parisc,metag: Do not hardcode maximum userspace stack size
metag: Reduce maximum stack size to 256MB
metag: fix memory barriers -
Pull irq fixes from Thomas Gleixner:
"Two small updates from the irq departement:- Provide missing inline stub for a SMP only function
- Add sub-maintainer for the drivers/irqchip/ part of the irq
subsystem. YAY!"* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add co-maintainer for drivers/irqchip
genirq: Provide irq_force_affinity fallback for non-SMP
19 May, 2014
1 commit
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Alexander noticed that we use RCU iteration on rb->event_list but do
not use list_{add,del}_rcu() to add,remove entries to that list, nor
do we observe proper grace periods when re-using the entries.Merge ring_buffer_detach() into ring_buffer_attach() such that
attaching to the NULL buffer is detaching.Furthermore, ensure that between any 'detach' and 'attach' of the same
event we observe the required grace period, but only when strictly
required. In effect this means that only ioctl(.request =
PERF_EVENT_IOC_SET_OUTPUT) will wait for a grace period, while the
normal initial attach and final detach will not be delayed.This patch should, I think, do the right thing under all
circumstances, the 'normal' cases all should never see the extra grace
period, but the two cases:1) PERF_EVENT_IOC_SET_OUTPUT on an event which already has a
ring_buffer set, will now observe the required grace period between
removing itself from the old and attaching itself to the new buffer.This case is 'simple' in that both buffers are present in
perf_event_set_output() one could think an unconditional
synchronize_rcu() would be sufficient; however...2) an event that has a buffer attached, the buffer is destroyed
(munmap) and then the event is attached to a new/different buffer
using PERF_EVENT_IOC_SET_OUTPUT.This case is more complex because the buffer destruction does:
ring_buffer_attach(.rb = NULL)
followed by the ioctl() doing:
ring_buffer_attach(.rb = foo);and we still need to observe the grace period between these two
calls due to us reusing the event->rb_entry list_head.In order to make 2 happen we use Paul's latest cond_synchronize_rcu()
call.Cc: Paul Mackerras
Cc: Stephane Eranian
Cc: Andi Kleen
Cc: "Paul E. McKenney"
Cc: Ingo Molnar
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Reported-by: Alexander Shishkin
Signed-off-by: Peter Zijlstra
Link: http://lkml.kernel.org/r/20140507123526.GD13658@twins.programming.kicks-ass.net
Signed-off-by: Thomas Gleixner
17 May, 2014
7 commits
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Prior to commit fbd929f2dce460456807a51e18d623db3db9f077
bonding: support QinQ for bond arp intervalthe arp monitoring code allowed for proper detection of devices
stacked on top of vlans. Since the above commit, the
code can still detect a device stacked on top of single
vlan, but not a device stacked on top of Q-in-Q configuration.
The search will only set the inner vlan tag if the route
device is the vlan device. However, this is not always the
case, as it is possible to extend the stacked configuration.With this patch it is possible to provision devices on
top Q-in-Q vlan configuration that should be used as
a source of ARP monitoring information.For example:
ip link add link bond0 vlan10 type vlan proto 802.1q id 10
ip link add link vlan10 vlan100 type vlan proto 802.1q id 100
ip link add link vlan100 type macvlanNote: This patch limites the number of stacked VLANs to 2,
just like before. The original, however had another issue
in that if we had more then 2 levels of VLANs, we would end
up generating incorrectly tagged traffic. This is no longer
possible.Fixes: fbd929f2dce460456807a51e18d623db3db9f077 (bonding: support QinQ for bond arp interval)
CC: Jay Vosburgh
CC: Veaceslav Falico
CC: Andy Gospodarek
CC: Ding Tianhong
CC: Patric McHardy
Signed-off-by: Vlad Yasevich
Signed-off-by: David S. Miller -
Macvlan devices try to avoid stacking, but that's not always
successfull or even desired. As an example, the following
configuration is perefectly legal and valid:eth0 ] dev_uc_sync+0x3c/0x80
[ 115.620686]
but task is already holding lock:
[ 115.620723] (&macvlan_netdev_addr_lock_key){+.....}, at: [] dev_set_rx_mode+0x1e/0x40
[ 115.620795]
which lock already depends on the new lock.[ 115.620853]
the existing dependency chain (in reverse order) is:
[ 115.620894]
-> #1 (&macvlan_netdev_addr_lock_key){+.....}:
[ 115.620935] [] lock_acquire+0xa2/0x130
[ 115.620974] [] _raw_spin_lock_nested+0x37/0x50
[ 115.621019] [] vlan_dev_set_rx_mode+0x53/0x110 [8021q]
[ 115.621066] [] __dev_set_rx_mode+0x57/0xa0
[ 115.621105] [] dev_set_rx_mode+0x26/0x40
[ 115.621143] [] __dev_open+0xde/0x140
[ 115.621174] [] __dev_change_flags+0x9d/0x170
[ 115.621174] [] dev_change_flags+0x29/0x60
[ 115.621174] [] do_setlink+0x321/0x9a0
[ 115.621174] [] rtnl_newlink+0x51f/0x730
[ 115.621174] [] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [] netlink_unicast+0xf0/0x1c0
[ 115.621174] [] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [] sock_sendmsg+0x8b/0xc0
[ 115.621174] [] ___sys_sendmsg+0x369/0x380
[ 115.621174] [] __sys_sendmsg+0x42/0x80
[ 115.621174] [] SyS_sendmsg+0x12/0x20
[ 115.621174] [] system_call_fastpath+0x16/0x1b
[ 115.621174]
-> #0 (&vlan_netdev_addr_lock_key/1){+.....}:
[ 115.621174] [] __lock_acquire+0x1773/0x1a60
[ 115.621174] [] lock_acquire+0xa2/0x130
[ 115.621174] [] _raw_spin_lock_nested+0x37/0x50
[ 115.621174] [] dev_uc_sync+0x3c/0x80
[ 115.621174] [] macvlan_set_mac_lists+0xca/0x110 [macvlan]
[ 115.621174] [] __dev_set_rx_mode+0x57/0xa0
[ 115.621174] [] dev_set_rx_mode+0x26/0x40
[ 115.621174] [] __dev_open+0xde/0x140
[ 115.621174] [] __dev_change_flags+0x9d/0x170
[ 115.621174] [] dev_change_flags+0x29/0x60
[ 115.621174] [] do_setlink+0x321/0x9a0
[ 115.621174] [] rtnl_newlink+0x51f/0x730
[ 115.621174] [] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [] netlink_unicast+0xf0/0x1c0
[ 115.621174] [] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [] sock_sendmsg+0x8b/0xc0
[ 115.621174] [] ___sys_sendmsg+0x369/0x380
[ 115.621174] [] __sys_sendmsg+0x42/0x80
[ 115.621174] [] SyS_sendmsg+0x12/0x20
[ 115.621174] [] system_call_fastpath+0x16/0x1b
[ 115.621174]
other info that might help us debug this:[ 115.621174] Possible unsafe locking scenario:
[ 115.621174] CPU0 CPU1
[ 115.621174] ---- ----
[ 115.621174] lock(&macvlan_netdev_addr_lock_key);
[ 115.621174] lock(&vlan_netdev_addr_lock_key/1);
[ 115.621174] lock(&macvlan_netdev_addr_lock_key);
[ 115.621174] lock(&vlan_netdev_addr_lock_key/1);
[ 115.621174]
*** DEADLOCK ***[ 115.621174] 2 locks held by ip/1704:
[ 115.621174] #0: (rtnl_mutex){+.+.+.}, at: [] rtnetlink_rcv+0x1b/0x40
[ 115.621174] #1: (&macvlan_netdev_addr_lock_key){+.....}, at: [] dev_set_rx_mode+0x1e/0x40
[ 115.621174]
stack backtrace:
[ 115.621174] CPU: 3 PID: 1704 Comm: ip Not tainted 3.15.0-rc1+ #24
[ 115.621174] Hardware name: Hewlett-Packard HP xw8400 Workstation/0A08h, BIOS 786D5 v02.38 10/25/2010
[ 115.621174] ffffffff82339ae0 ffff880465f79568 ffffffff816ee20c ffffffff82339ae0
[ 115.621174] ffff880465f795a8 ffffffff816e9e1b ffff880465f79600 ffff880465b019c8
[ 115.621174] 0000000000000001 0000000000000002 ffff880465b019c8 ffff880465b01230
[ 115.621174] Call Trace:
[ 115.621174] [] dump_stack+0x4d/0x66
[ 115.621174] [] print_circular_bug+0x200/0x20e
[ 115.621174] [] __lock_acquire+0x1773/0x1a60
[ 115.621174] [] ? trace_hardirqs_on_caller+0xb2/0x1d0
[ 115.621174] [] lock_acquire+0xa2/0x130
[ 115.621174] [] ? dev_uc_sync+0x3c/0x80
[ 115.621174] [] _raw_spin_lock_nested+0x37/0x50
[ 115.621174] [] ? dev_uc_sync+0x3c/0x80
[ 115.621174] [] dev_uc_sync+0x3c/0x80
[ 115.621174] [] macvlan_set_mac_lists+0xca/0x110 [macvlan]
[ 115.621174] [] __dev_set_rx_mode+0x57/0xa0
[ 115.621174] [] dev_set_rx_mode+0x26/0x40
[ 115.621174] [] __dev_open+0xde/0x140
[ 115.621174] [] __dev_change_flags+0x9d/0x170
[ 115.621174] [] dev_change_flags+0x29/0x60
[ 115.621174] [] ? mem_cgroup_bad_page_check+0x21/0x30
[ 115.621174] [] do_setlink+0x321/0x9a0
[ 115.621174] [] ? __lock_acquire+0x37c/0x1a60
[ 115.621174] [] rtnl_newlink+0x51f/0x730
[ 115.621174] [] ? rtnl_newlink+0xe9/0x730
[ 115.621174] [] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [] ? trace_hardirqs_on+0xd/0x10
[ 115.621174] [] ? rtnetlink_rcv+0x1b/0x40
[ 115.621174] [] ? rtnetlink_rcv+0x40/0x40
[ 115.621174] [] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [] netlink_unicast+0xf0/0x1c0
[ 115.621174] [] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [] sock_sendmsg+0x8b/0xc0
[ 115.621174] [] ? might_fault+0x5f/0xb0
[ 115.621174] [] ? might_fault+0xa8/0xb0
[ 115.621174] [] ? might_fault+0x5f/0xb0
[ 115.621174] [] ? verify_iovec+0x5e/0xe0
[ 115.621174] [] ___sys_sendmsg+0x369/0x380
[ 115.621174] [] ? __do_page_fault+0x11d/0x570
[ 115.621174] [] ? up_read+0x1f/0x40
[ 115.621174] [] ? __do_page_fault+0x214/0x570
[ 115.621174] [] ? mntput_no_expire+0x6b/0x1c0
[ 115.621174] [] ? mntput_no_expire+0x17/0x1c0
[ 115.621174] [] ? mntput+0x24/0x40
[ 115.621174] [] __sys_sendmsg+0x42/0x80
[ 115.621174] [] SyS_sendmsg+0x12/0x20
[ 115.621174] [] system_call_fastpath+0x16/0x1bFix this by correctly providing macvlan lockdep class.
Signed-off-by: Vlad Yasevich
Signed-off-by: David S. Miller -
This reverts commit dc8eaaa006350d24030502a4521542e74b5cb39f.
vlan: Fix lockdep warning when vlan dev handle notificationInstead we use the new new API to find the lock subclass of
our vlan device. This way we can support configurations where
vlans are interspersed with other devices:
bond -> vlan -> macvlan -> vlanSigned-off-by: Vlad Yasevich
Signed-off-by: David S. Miller -
Currently netif_addr_lock_nested assumes that there can be only
a single nesting level between 2 devices. However, if we
have multiple devices of the same type stacked, this fails.
For example:
eth0
Signed-off-by: David S. Miller -
Multiple devices in the kernel can be stacked/nested and they
need to know their nesting level for the purposes of lockdep.
This patch provides a generic function that determines a nesting
level of a particular device by its type (ex: vlan, macvlan, etc).
We only care about nesting of the same type of devices.For example:
eth0
Signed-off-by: David S. Miller -
John W. Linville says:
====================
pull request: wireless 2014-05-15Please pull this batch of fixes for the 3.15 stream...
For the mac80211 bits, Johannes says:
"One fix is to get better VHT performance and the other fixes tracing
garbage or other potential issues with the interface name tracing."And...
"This has a fix from Emmanuel for a problem I failed to fix - when
association is in progress then it needs to be cancelled while
suspending (I had fixed the same for authentication). Also included a
fix from myself for a userspace API problem that hit the iw tool and a
fix to the remain-on-channel framework."For the iwlwifi bits, Emmanuel says:
"Alex fixes the scan by disabling the fragmented scan. David prevents
scan offload while associated, the firmware seems not to like it. I
fix a stupid bug I made in BT Coex, and fix a bad #ifdef clause in rate
scaling. Along with that there is a fix for a NULL pointer exception
that can happen if we load the driver and our ISR gets called because
the interrupt line is shared. The fix has been tested by the reporter."And...
"We have here a fix from David Spinadel that makes a previous fix more
complete, and an off-by-one issue fixed by Eliad in the same area.
I fix the monitor that broke on the way."Beyond that...
Daniel Kim's one-liner fixes a brcmfmac regression caused by a typo
in an earlier commit..Rajkumar Manoharan fixes an ath9k oops reported by David Herrmann.
====================Signed-off-by: David S. Miller
-
This patch adds UPDATE_QP SRIOV wrapper support.
The mechanism is a general one, but currently only source MAC
index changes are allowed for VFs.Signed-off-by: Matan Barak
Signed-off-by: Or Gerlitz
Signed-off-by: David S. Miller
16 May, 2014
2 commits
-
RFC 4861 states in 7.2.5:
The IsRouter flag in the cache entry MUST be set based on the
Router flag in the received advertisement. In those cases
where the IsRouter flag changes from TRUE to FALSE as a result
of this update, the node MUST remove that router from the
Default Router List and update the Destination Cache entries
for all destinations using that neighbor as a router as
specified in Section 7.3.3. This is needed to detect when a
node that is used as a router stops forwarding packets due to
being configured as a host.Currently, when dealing with NA Message which IsRouter flag changes from
TRUE to FALSE, the kernel only removes router from the Default Router List,
and don't update the Destination Cache entries.Now in order to update those Destination Cache entries, i introduce
function rt6_clean_tohost().Signed-off-by: Duan Jiong
Acked-by: Hannes Frederic Sowa
Signed-off-by: David S. Miller -
From: Cong Wang
commit 50624c934db18ab90 (net: Delay default_device_exit_batch until no
devices are unregistering) introduced rtnl_lock_unregistering() for
default_device_exit_batch(). Same race could happen we when rmmod a driver
which calls rtnl_link_unregister() as we call dev->destructor without rtnl
lock.For long term, I think we should clean up the mess of netdev_run_todo()
and net namespce exit code.Cc: Eric W. Biederman
Cc: David S. Miller
Signed-off-by: Cong Wang
Signed-off-by: Cong Wang
Signed-off-by: David S. Miller
15 May, 2014
4 commits
-
…wireless into for-davem
-
Make the CONFIG_OF=n prototpe of of_node_full_name() mateh the CONFIG_OF=y
version.Fixes compile warnings like this:
sound/soc/soc-core.c: In function 'soc_check_aux_dev':
sound/soc/soc-core.c:1667:3: warning: passing argument 1 of 'of_node_full_name' discards 'const' qualifier from pointer target type [enabled by default]
codecname = of_node_full_name(aux_dev->codec_of_node);when CONFIG_OF is not defined.
Signed-off-by: Stephen Rothwell
Signed-off-by: Grant Likely -
_STK_LIM_MAX could be used to override the RLIMIT_STACK hard limit from
an arch's include/uapi/asm-generic/resource.h file, but is no longer
used since both parisc and metag removed the override. Therefore remove
it entirely, setting the hard RLIMIT_STACK limit to RLIM_INFINITY
directly in include/asm-generic/resource.h.Signed-off-by: James Hogan
Cc: Arnd Bergmann
Cc: linux-arch@vger.kernel.org
Cc: Helge Deller
Cc: John David Anglin
14 May, 2014
2 commits
-
net_get_random_once depends on the static keys infrastructure to patch up
the branch to the slow path during boot. This was realized by abusing the
static keys api and defining a new initializer to not enable the call
site while still indicating that the branch point should get patched
up. This was needed to have the fast path considered likely by gcc.The static key initialization during boot up normally walks through all
the registered keys and either patches in ideal nops or enables the jump
site but omitted that step on x86 if ideal nops where already placed at
static_key branch points. Thus net_get_random_once branches not always
became active.This patch switches net_get_random_once to the ordinary static_key
api and thus places the kernel fast path in the - by gcc considered -
unlikely path. Microbenchmarks on Intel and AMD x86-64 showed that
the unlikely path actually beats the likely path in terms of cycle cost
and that different nop patterns did not make much difference, thus this
switch should not be noticeable.Fixes: a48e42920ff38b ("net: introduce new macro net_get_random_once")
Reported-by: Tuomas Räsänen
Cc: Linus Torvalds
Signed-off-by: Hannes Frederic Sowa
Signed-off-by: David S. Miller -
A MIPS64 kernel may support ELF files for all 3 MIPS ABIs
(O32, N32, N64). Furthermore, the AUDIT_ARCH_MIPS{,EL}64 token
does not provide enough information about the ABI for the 64-bit
process. As a result of which, userland needs to use complex
seccomp filters to decide whether a syscall belongs to the o32 or n32
or n64 ABI. Therefore, a new arch token for MIPS64/n32 is added so it
can be used by seccomp to explicitely set syscall filters for this ABI.Signed-off-by: Markos Chandras
Acked-by: Eric Paris
Acked-by: Paul Moore
Cc: Andy Lutomirski
Cc: Ralf Baechle
Cc: Andy Lutomirski
Cc: linux-mips@linux-mips.org
Link: http://sourceforge.net/p/libseccomp/mailman/message/32239040/
Patchwork: https://patchwork.linux-mips.org/patch/6818/
Signed-off-by: Ralf Baechle
13 May, 2014
3 commits
-
Determining the css of a task usually requires RCU read lock as that's
the only thing which keeps the returned css accessible till its
reference is acquired; however, testing whether a task belongs to the
root can be performed without dereferencing the returned css by
comparing the returned pointer against the root one in init_css_set[]
which never changes.Implement task_css_is_root() which can be invoked in any context.
This will be used by the scheduled cgroup_freezer change.v2: cgroup no longer supports modular controllers. No need to export
init_css_set. Pointed out by Li.Signed-off-by: Tejun Heo
Acked-by: Li Zefan -
My commit removing that also removed it from the header file
which can break compilation of userspace that needed it, add
it back for API/ABI compatibility purposes (but no code to
implement anything for it.)Signed-off-by: Johannes Berg
-
The kernfs open method - kernfs_fop_open() - inherited extra
permission checks from sysfs. While the vfs layer allows ignoring the
read/write permissions checks if the issuer has CAP_DAC_OVERRIDE,
sysfs explicitly denied open regardless of the cap if the file doesn't
have any of the UGO perms of the requested access or doesn't implement
the requested operation. It can be debated whether this was a good
idea or not but the behavior is too subtle and dangerous to change at
this point.After cgroup got converted to kernfs, this extra perm check also got
applied to cgroup breaking libcgroup which opens write-only files with
O_RDWR as root. This patch gates the extra open permission check with
a new flag KERNFS_ROOT_EXTRA_OPEN_PERM_CHECK and enables it for sysfs.
For sysfs, nothing changes. For cgroup, root now can perform any
operation regardless of the permissions as it was before kernfs
conversion. Note that kernfs still fails unimplemented operations
with -EINVAL.While at it, add comments explaining KERNFS_ROOT flags.
Signed-off-by: Tejun Heo
Reported-by: Andrey Wagin
Tested-by: Andrey Wagin
Cc: Li Zefan
References: http://lkml.kernel.org/g/CANaxB-xUm3rJ-Cbp72q-rQJO5mZe1qK6qXsQM=vh0U8upJ44+A@mail.gmail.com
Fixes: 2bd59d48ebfb ("cgroup: convert to kernfs")
Signed-off-by: Greg Kroah-Hartman
