Now that every DAI has a component we can track the DAIs on a per component
basis. This simplifies the DAI lookup when we are only interested in DAIs of a
specific component and also makes it possible to have multiple components with
the same parent device and also register DAIs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
A collection of fixes for ARM platforms. A little large due to us missing to
do one last week, but there's nothing in particular here that is in itself
large and scary.
Mostly a handful of smaller fixes all over the place. The majority is made
up of fixes for OMAP, but there are a few for others as well. In particular,
there was a decision to rename a binding for the Broadcom pinctrl block that
we need to go in before the final release since we then treat it as ABI.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from from Olof Johansson:
"A collection of fixes for ARM platforms. A little large due to us
missing to do one last week, but there's nothing in particular here
that is in itself large and scary.
Mostly a handful of smaller fixes all over the place. The majority is
made up of fixes for OMAP, but there are a few for others as well. In
particular, there was a decision to rename a binding for the Broadcom
pinctrl block that we need to go in before the final release since we
then treat it as ABI"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: omap3-gta04: Add ti,omap36xx to compatible property to avoid problems with booting
ARM: tegra: add LED options back into tegra_defconfig
ARM: dts: omap3-igep: fix boot fail due wrong compatible match
ARM: OMAP3: Fix pinctrl interrupts for core2
pinctrl: Rename Broadcom Capri pinctrl binding
pinctrl: refer to updated dt binding string.
Update dtsi with new pinctrl compatible string
ARM: OMAP: Kill warning in CPUIDLE code with !CONFIG_SMP
ARM: OMAP2+: Add support for thumb mode on DT booted N900
ARM: OMAP2+: clock: fix clkoutx2 with CLK_SET_RATE_PARENT
ARM: OMAP4: hwmod: Fix SOFTRESET logic for OMAP4
ARM: DRA7: hwmod data: correct the sysc data for spinlock
ARM: OMAP5: PRM: Fix reboot handling
ARM: sunxi: dt: Change the touchscreen compatibles
ARM: sun7i: dt: Fix interrupt trigger types
Highlights include:
- Fix another nfs4_sequence corruptor in RELEASE_LOCKOWNER
- Fix an Oopsable delegation callback race
- Fix another bad stateid infinite loop
- Fail the data server I/O is the stateid represents a lost lock
- Fix an Oopsable sunrpc trace event
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Merge tag 'nfs-for-3.14-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
- Fix another nfs4_sequence corruptor in RELEASE_LOCKOWNER
- Fix an Oopsable delegation callback race
- Fix another bad stateid infinite loop
- Fail the data server I/O is the stateid represents a lost lock
- Fix an Oopsable sunrpc trace event"
* tag 'nfs-for-3.14-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: Fix oops when trace sunrpc_task events in nfs client
NFSv4: Fail the truncate() if the lock/open stateid is invalid
NFSv4.1 Fail data server I/O if stateid represents a lost lock
NFSv4: Fix the return value of nfs4_select_rw_stateid
NFSv4: nfs4_stateid_is_current should return 'true' for an invalid stateid
NFS: Fix a delegation callback race
NFSv4: Fix another nfs4_sequence corruptor
Pull SCSI target fixes from Nicholas Bellinger:
"This series addresses a number of outstanding issues wrt to active I/O
shutdown using iser-target. This includes:
- Fix a long standing tpg_state bug where a tpg could be referenced
during explicit shutdown (v3.1+ stable)
- Use list_del_init for iscsi_cmd->i_conn_node so list_empty checks
work as expected (v3.10+ stable)
- Fix a isert_conn->state related hung task bug + ensure outstanding
I/O completes during session shutdown. (v3.10+ stable)
- Fix isert_conn->post_send_buf_count accounting for RDMA READ/WRITEs
(v3.10+ stable)
- Ignore FRWR completions during active I/O shutdown (v3.12+ stable)
- Fix command leakage for interrupt coalescing during active I/O
shutdown (v3.13+ stable)
Also included is another DIF emulation fix from Sagi specific to
v3.14-rc code"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
Target/sbc: Fix sbc_copy_prot for offset scatters
iser-target: Fix command leak for tx_desc->comp_llnode_batch
iser-target: Ignore completions for FRWRs in isert_cq_tx_work
iser-target: Fix post_send_buf_count for RDMA READ/WRITE
iscsi/iser-target: Fix isert_conn->state hung shutdown issues
iscsi/iser-target: Use list_del_init for ->i_conn_node
iscsi-target: Fix iscsit_get_tpg_from_np tpg_state bug
Newer IP has an expanded encoding for the fratio bits. As the additional
used bits are unused on older IP simply expand the field to the new
size.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
other bcm mobile bindings.
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Merge tag 'bcm-for-3.14-pinctrl-reduced-rename' of git://github.com/broadcom/bcm11351 into fixes
Merge 'bcm pinctrl rename' From Christin Daudt:
Rename pinctrl dt binding to restore consistency with other bcm mobile
bindings.
* tag 'bcm-for-3.14-pinctrl-reduced-rename' of git://github.com/broadcom/bcm11351:
pinctrl: Rename Broadcom Capri pinctrl binding
pinctrl: refer to updated dt binding string.
Update dtsi with new pinctrl compatible string
+ Linux 3.14-rc4
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull workqueue fix from Tejun Heo:
"This pull request contains a workqueue usage fix for firewire.
For quite a long time now, workqueue only treats two work items
identical iff both their addresses and callbacks match. This is to
avoid introducing false dependency through the work item being
recycled while being executed. This changes non-reentrancy guarantee
for the users of PREPARE[_DELAYED]_WORK() - if the function changes,
reentrancy isn't guaranteed against the previous instance. Firewire
depended on such nonreentrancy guarantee.
This is fixed by doing the work item multiplexing from firewire proper
while keeping the work function unchanged"
* 'for-3.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
firewire: don't use PREPARE_DELAYED_WORK
Developers would say they put a trace_printk() before and after the trace
event but when they enable it (and the trace event said it was enabled) they
would see the trace_printks but not the trace event.
I was not able to reproduce this, but that's because I wasn't looking at
the right location. Recently, another bug came up that showed the issue.
If your kernel supports signed modules but allows for non-signed modules
to be loaded, then when one is, the kernel will silently set the
MODULE_FORCED taint on the module. Although, this taint happens without
the need for insmod --force or anything of the kind, it labels the
module with that taint anyway.
If this tainted module has tracepoints, the tracepoints will be ignored
because of the MODULE_FORCED taint. But no error message will be
displayed. Worse yet, the event infrastructure will still be created
letting users enable the trace event represented by the tracepoint,
although that event will never actually be enabled. This is because
the tracepoint infrastructure allows for non-existing tracepoints to
be enabled for new modules to arrive and have their tracepoints set.
Although there are several things wrong with the above, this change
only addresses the creation of the trace event files for tracepoints
that are not created when a module is loaded and is tainted. This change
will print an error message about the module being tainted and not the
trace events will not be created, and it does not create the trace event
infrastructure.
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Merge tag 'trace-fixes-v3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"In the past, I've had lots of reports about trace events not working.
Developers would say they put a trace_printk() before and after the
trace event but when they enable it (and the trace event said it was
enabled) they would see the trace_printks but not the trace event.
I was not able to reproduce this, but that's because I wasn't looking
at the right location. Recently, another bug came up that showed the
issue.
If your kernel supports signed modules but allows for non-signed
modules to be loaded, then when one is, the kernel will silently set
the MODULE_FORCED taint on the module. Although, this taint happens
without the need for insmod --force or anything of the kind, it labels
the module with that taint anyway.
If this tainted module has tracepoints, the tracepoints will be
ignored because of the MODULE_FORCED taint. But no error message will
be displayed. Worse yet, the event infrastructure will still be
created letting users enable the trace event represented by the
tracepoint, although that event will never actually be enabled. This
is because the tracepoint infrastructure allows for non-existing
tracepoints to be enabled for new modules to arrive and have their
tracepoints set.
Although there are several things wrong with the above, this change
only addresses the creation of the trace event files for tracepoints
that are not created when a module is loaded and is tainted. This
change will print an error message about the module being tainted and
not the trace events will not be created, and it does not create the
trace event infrastructure"
* tag 'trace-fixes-v3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Do not add event files for modules that fail tracepoints
Pull block fixes from Jens Axboe:
"Small collection of fixes for 3.14-rc. It contains:
- Three minor update to blk-mq from Christoph.
- Reduce number of unaligned (< 4kb) in-flight writes on mtip32xx to
two. From Micron.
- Make the blk-mq CPU notify spinlock raw, since it can't be a
sleeper spinlock on RT. From Mike Galbraith.
- Drop now bogus BUG_ON() for bio iteration with blk integrity. From
Nic Bellinger.
- Properly propagate the SYNC flag on requests. From Shaohua"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: add REQ_SYNC early
rt,blk,mq: Make blk_mq_cpu_notify_lock a raw spinlock
bio-integrity: Drop bio_integrity_verify BUG_ON in post bip->bip_iter world
blk-mq: support partial I/O completions
blk-mq: merge blk_mq_insert_request and blk_mq_run_request
blk-mq: remove blk_mq_alloc_rq
mtip32xx: Reduce the number of unaligned writes to 2
PREPARE_[DELAYED_]WORK() are being phased out. They have few users
and a nasty surprise in terms of reentrancy guarantee as workqueue
considers work items to be different if they don't have the same work
function.
firewire core-device and sbp2 have been been multiplexing work items
with multiple work functions. Introduce fw_device_workfn() and
sbp2_lu_workfn() which invoke fw_device->workfn and
sbp2_logical_unit->workfn respectively and always use the two
functions as the work functions and update the users to set the
->workfn fields instead of overriding work functions using
PREPARE_DELAYED_WORK().
This fixes a variety of possible regressions since a2c1c57be8
"workqueue: consider work function when searching for busy work items"
due to which fw_workqueue lost its required non-reentrancy property.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linux1394-devel@lists.sourceforge.net
Cc: stable@vger.kernel.org # v3.9+
Cc: stable@vger.kernel.org # v3.8.2+
Cc: stable@vger.kernel.org # v3.4.60+
Cc: stable@vger.kernel.org # v3.2.40+
In some cases, we need regmap's format parse_val function
to do be/le translation according to the bus configuration.
For example, snd_soc_bytes_put() uses regmap to write/read values,
and use cpu_to_be() directly to covert MASK into big endian. This
is a defect, and should use regmap's format function to do it according
to bus configuration.
Signed-off-by: Nenghua Cao <nhcao@marvell.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
In preparation for componentization move the ignore_pmdown_time field from the
snd_soc_codec struct to the snd_soc_component struct. Set it to true for non
CODEC components for now.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
There is no reason why active count tracking should only be done for CODECs but
not for other components. Moving the active count from the snd_soc_codec struct
to the snd_soc_component struct reduces the differences between CODECs and other
components and will eventually allow component to component DAI links (Which is
a prerequisite for converting CODECs to components).
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Keep track of which component registered a DAI. We'll need this as
componentization progresses.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Instead of directly checking the 'active' field of the CODEC struct add a new
helper function that will return either true or false depending on whether the
CODEC is active. This will make the migration to the component level easier.
The patch also updates all CODEC drivers that check the active attribute to use
the new helper function.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
We have the same code that increments and decrements the active field of the
various PCM runtime components (all with the same bugs). Factor this out into
common helper functions.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
For CODEC to CODEC links we should only immediately power down if both CODECs
are configured to ignore the power down delay. Factor the logic for this
into a helper function that can be used for both compressed and normal PCMs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
R-Car sound has SCU unit which has SRC/CTU/MIX/DVC,
and current rsnd driver has scu.c and scu module.
Current scu.c has SRC support only.
My first concept was control these feature on scu.c
but, it become difficult and un-understandable now.
This patch rename scu to src
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Current rsnd driver is assuming that SCU/SRU ID is
same as SSIU/SSI ID, because Gen1 can't select it.
But, Gen2 can select it.
The SCU/SRU/SSIU/SSI pair depends on the platform.
This patch get correct SCU ID from platform info.
To keep compatible, it still assuming SCU ID = SSI ID
if platform doesn't have info
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
R-Car sound DAI consists from SSI/SCU/SSIU/SRU...
Current R-Car sound DAI is decided from these settings,
but it is intuitively unclear, and is not good design for DT support.
This patch adds new rsnd_dai_platform_info to solve this issue.
But now, many platform is using this driver without
rsnd_dai_platform_info.
So, this patch still supports DAI settings via SSI to keep compatible.
It will be removed in next Linux version.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This patch addresses a couple of different hug shutdown issues
related to wait_event() + isert_conn->state. First, it changes
isert_conn->conn_wait + isert_conn->conn_wait_comp_err from
waitqueues to completions, and sets ISER_CONN_TERMINATING from
within isert_disconnect_work().
Second, it splits isert_free_conn() into isert_wait_conn() that
is called earlier in iscsit_close_connection() to ensure that
all outstanding commands have completed before continuing.
Finally, it breaks isert_cq_comp_err() into seperate TX / RX
related code, and adds logic in isert_cq_rx_comp_err() to wait
for outstanding commands to complete before setting ISER_CONN_DOWN
and calling complete(&isert_conn->conn_wait_comp_err).
Acked-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: <stable@vger.kernel.org> #3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Pull networking fixes from David Miller:
1) Fix memory leak in ieee80211_prep_connection(), sta_info leaked on
error. From Eytan Lifshitz.
2) Unintentional switch case fallthrough in nft_reject_inet_eval(),
from Patrick McHardy.
3) Must check if payload lenth is a power of 2 in
nft_payload_select_ops(), from Nikolay Aleksandrov.
4) Fix mis-checksumming in xen-netfront driver, ip_hdr() is not in the
correct place when we invoke skb_checksum_setup(). From Wei Liu.
5) TUN driver should not advertise HW vlan offload features in
vlan_features. Fix from Fernando Luis Vazquez Cao.
6) IPV6_VTI needs to select NET_IPV_TUNNEL to avoid build errors, fix
from Steffen Klassert.
7) Add missing locking in xfrm_migrade_state_find(), we must hold the
per-namespace xfrm_state_lock while traversing the lists. Fix from
Steffen Klassert.
8) Missing locking in ath9k driver, access to tid->sched must be done
under ath_txq_lock(). Fix from Stanislaw Gruszka.
9) Fix two bugs in TCP fastopen. First respect the size argument given
to tcp_sendmsg() in the fastopen path, and secondly prevent
tcp_send_syn_data() from potentially using order-5 allocations.
From Eric Dumazet.
10) Fix handling of default neigh garbage collection params, from Jiri
Pirko.
11) Fix cwnd bloat and over-inflation of RTT when transmit segmentation
is in use. From Eric Dumazet.
12) Missing initialization of Realtek r8169 driver's statistics
seqlocks. Fix from Kyle McMartin.
13) Fix RTNL assertion failures in 802.3ad and AB ARP monitor of bonding
driver, from Ding Tianhong.
14) Bonding slave release race can cause divide by zero, fix from
Nikolay Aleksandrov.
15) Overzealous return from neigh_periodic_work() causes reachability
time to not be computed. Fix from Duain Jiong.
16) Fix regression in ipv6_find_hdr(), it should not return -ENOENT when
a specific target is specified and found. From Hans Schillstrom.
17) Fix VLAN tag stripping regression in BNA driver, from Ivan Vecera.
18) Tail loss probe can calculate bogus RTTs due to missing packet
marking on retransmit. Fix from Yuchung Cheng.
19) We cannot do skb_dst_drop() in iptunnel_pull_header() because
multicast loopback detection in later code paths need access to
skb_rtable(). Fix from Xin Long.
20) The macvlan driver regresses in that it propagates lower device
offload support disables into itself, causing severe slowdowns when
running over a bridge. Provide the software offloads always on
macvlan devices to deal with this and the regression is gone. From
Vlad Yasevich.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits)
macvlan: Add support for 'always_on' offload features
net: sctp: fix sctp_sf_do_5_1D_ce to verify if we/peer is AUTH capable
ip_tunnel:multicast process cause panic due to skb->_skb_refdst NULL pointer
net: cpsw: fix cpdma rx descriptor leak on down interface
be2net: isolate TX workarounds not applicable to Skyhawk-R
be2net: Fix skb double free in be_xmit_wrokarounds() failure path
be2net: clear promiscuous bits in adapter->flags while disabling promiscuous mode
be2net: Fix to reset transparent vlan tagging
qlcnic: dcb: a couple off by one bugs
tcp: fix bogus RTT on special retransmission
hsr: off by one sanity check in hsr_register_frame_in()
can: remove CAN FD compatibility for CAN 2.0 sockets
can: flexcan: factor out soft reset into seperate funtion
can: flexcan: flexcan_remove(): add missing netif_napi_del()
can: flexcan: fix transition from and to freeze mode in chip_{,un}freeze
can: flexcan: factor out transceiver {en,dis}able into seperate functions
can: flexcan: fix transition from and to low power mode in chip_{en,dis}able
can: flexcan: flexcan_open(): fix error path if flexcan_chip_start() fails
can: flexcan: fix shutdown: first disable chip, then all interrupts
USB AX88179/178A: Support D-Link DUB-1312
...
Merge misc fixes from Andrew Morton.
* emailed patches from Andrew Morton akpm@linux-foundation.org>:
mm: page_alloc: exempt GFP_THISNODE allocations from zone fairness
mm: numa: bugfix for LAST_CPUPID_NOT_IN_PAGE_FLAGS
MAINTAINERS: add and correct types of some "T:" entries
MAINTAINERS: use tab for separator
rapidio/tsi721: fix tasklet termination in dma channel release
hfsplus: fix remount issue
zram: avoid null access when fail to alloc meta
sh: prefix sh-specific "CCR" and "CCR2" by "SH_"
ocfs2: fix quota file corruption
drivers/rtc/rtc-s3c.c: fix incorrect way of save/restore of S3C2410_TICNT for TYPE_S3C64XX
kallsyms: fix absolute addresses for kASLR
scripts/gen_initramfs_list.sh: fix flags for initramfs LZ4 compression
mm: include VM_MIXEDMAP flag in the VM_SPECIAL list to avoid m(un)locking
memcg: reparent charges of children before processing parent
memcg: fix endless loop in __mem_cgroup_iter_next()
lib/radix-tree.c: swapoff tmpfs radix_tree: remember to rcu_read_unlock
dma debug: account for cachelines and read-only mappings in overlap tracking
mm: close PageTail race
MAINTAINERS: EDAC: add Mauro and Borislav as interim patch collectors
When doing some numa tests on powerpc, I triggered an oops bug. I find
it is caused by using page->_last_cpupid. It should be initialized as
"-1 & LAST_CPUPID_MASK", but not "-1". Otherwise, in task_numa_fault(),
we will miss the checking (last_cpupid == (-1 & LAST_CPUPID_MASK)). And
finally cause an oops bug in task_numa_group(), since the online cpu is
less than possible cpu. This happen with CONFIG_SPARSE_VMEMMAP disabled
Call trace:
SMP NR_CPUS=64 NUMA PowerNV
Modules linked in:
CPU: 24 PID: 804 Comm: systemd-udevd Not tainted3.13.0-rc1+ #32
task: c000001e2746aa80 ti: c000001e32c50000 task.ti:c000001e32c50000
REGS: c000001e32c53510 TRAP: 0300 Not tainted(3.13.0-rc1+)
MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:28024424 XER: 20000000
CFAR: c000000000009324 DAR: 7265717569726857 DSISR:40000000 SOFTE: 1
NIP .task_numa_fault+0x1470/0x2370
LR .task_numa_fault+0x1468/0x2370
Call Trace:
.task_numa_fault+0x1468/0x2370 (unreliable)
.do_numa_page+0x480/0x4a0
.handle_mm_fault+0x4ec/0xc90
.do_page_fault+0x3a8/0x890
handle_page_fault+0x10/0x30
Instruction dump:
3c82fefb 3884b138 48d9cff1 60000000 48000574 3c62fefb3863af78 3c82fefb
3884b138 48d9cfd5 60000000 e93f0100 <812902e4> 7d2907b45529063e 7d2a07b4
---[ end trace 15f2510da5ae07cf ]---
Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Daniel Borkmann reported a VM_BUG_ON assertion failing:
------------[ cut here ]------------
kernel BUG at mm/mlock.c:528!
invalid opcode: 0000 [#1] SMP
Modules linked in: ccm arc4 iwldvm [...]
video
CPU: 3 PID: 2266 Comm: netsniff-ng Not tainted 3.14.0-rc2+ #8
Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET37WW (1.12 ) 05/29/2012
task: ffff8801f87f9820 ti: ffff88002cb44000 task.ti: ffff88002cb44000
RIP: 0010:[<ffffffff81171ad0>] [<ffffffff81171ad0>] munlock_vma_pages_range+0x2e0/0x2f0
Call Trace:
do_munmap+0x18f/0x3b0
vm_munmap+0x41/0x60
SyS_munmap+0x22/0x30
system_call_fastpath+0x1a/0x1f
RIP munlock_vma_pages_range+0x2e0/0x2f0
---[ end trace a0088dcf07ae10f2 ]---
because munlock_vma_pages_range() thinks it's unexpectedly in the middle
of a THP page. This can be reproduced with default config since 3.11
kernels. A reproducer can be found in the kernel's selftest directory
for networking by running ./psock_tpacket.
The problem is that an order=2 compound page (allocated by
alloc_one_pg_vec_page() is part of the munlocked VM_MIXEDMAP vma (mapped
by packet_mmap()) and mistaken for a THP page and assumed to be order=9.
The checks for THP in munlock came with commit ff6a6da60b ("mm:
accelerate munlock() treatment of THP pages"), i.e. since 3.9, but did
not trigger a bug. It just makes munlock_vma_pages_range() skip such
compound pages until the next 512-pages-aligned page, when it encounters
a head page. This is however not a problem for vma's where mlocking has
no effect anyway, but it can distort the accounting.
Since commit 7225522bb4 ("mm: munlock: batch non-THP page isolation
and munlock+putback using pagevec") this can trigger a VM_BUG_ON in
PageTransHuge() check.
This patch fixes the issue by adding VM_MIXEDMAP flag to VM_SPECIAL, a
list of flags that make vma's non-mlockable and non-mergeable. The
reasoning is that VM_MIXEDMAP vma's are similar to VM_PFNMAP, which is
already on the VM_SPECIAL list, and both are intended for non-LRU pages
where mlocking makes no sense anyway. Related Lkml discussion can be
found in [2].
[1] tools/testing/selftests/net/psock_tpacket
[2] https://lkml.org/lkml/2014/1/10/427
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Reported-by: Daniel Borkmann <dborkman@redhat.com>
Tested-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: John David Anglin <dave.anglin@bell.net>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Carsten Otte <cotte@de.ibm.com>
Cc: Jared Hulbert <jaredeh@gmail.com>
Tested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org> [3.11.x+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit bf6bddf192 ("mm: introduce compaction and migration for
ballooned pages") introduces page_count(page) into memory compaction
which dereferences page->first_page if PageTail(page).
This results in a very rare NULL pointer dereference on the
aforementioned page_count(page). Indeed, anything that does
compound_head(), including page_count() is susceptible to racing with
prep_compound_page() and seeing a NULL or dangling page->first_page
pointer.
This patch uses Andrea's implementation of compound_trans_head() that
deals with such a race and makes it the default compound_head()
implementation. This includes a read memory barrier that ensures that
if PageTail(head) is true that we return a head page that is neither
NULL nor dangling. The patch then adds a store memory barrier to
prep_compound_page() to ensure page->first_page is set.
This is the safest way to ensure we see the head page that we are
expecting, PageTail(page) is already in the unlikely() path and the
memory barriers are unfortunately required.
Hugetlbfs is the exception, we don't enforce a store memory barrier
during init since no race is possible.
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Holger Kiehl <Holger.Kiehl@dwd.de>
Cc: Christoph Lameter <cl@linux.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If a module fails to add its tracepoints due to module tainting, do not
create the module event infrastructure in the debugfs directory. As the events
will not work and worse yet, they will silently fail, making the user wonder
why the events they enable do not display anything.
Having a warning on module load and the events not visible to the users
will make the cause of the problem much clearer.
Link: http://lkml.kernel.org/r/20140227154923.265882695@goodmis.org
Fixes: 6d723736e4 "tracing/events: add support for modules to TRACE_EVENT"
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: stable@vger.kernel.org # 2.6.31+
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
regressions. There is a single framework fix that prevents dereferencing
a NULL pointer when calling clk_get. The range of fixes for clock driver
regressions spans memory leak fixes, touching the wrong registers that
cause things to explode, misconfigured clock rates that result in
non-responsive devices and even some boot failures. The most benign fix
is DT binding doc typo. It is a stable ABI exposed from the kernel that
was introduced in -rc1, so best to fix it now.
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Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux
Pull clk framework fixes from Mike Turquette:
"Clock framework and driver fixes, all of which fix user-visible
regressions.
There is a single framework fix that prevents dereferencing a NULL
pointer when calling clk_get. The range of fixes for clock driver
regressions spans memory leak fixes, touching the wrong registers that
cause things to explode, misconfigured clock rates that result in
non-responsive devices and even some boot failures. The most benign
fix is DT binding doc typo. It is a stable ABI exposed from the
kernel that was introduced in -rc1, so best to fix it now"
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux: (25 commits)
clk:at91: Fix memory leak in of_at91_clk_master_setup()
clk: nomadik: fix multiplatform problem
clk: Correct handling of NULL clk in __clk_{get, put}
clk: shmobile: Fix typo in MSTP clock DT bindings
clk: shmobile: rcar-gen2: Fix qspi divisor
clk: shmobile: rcar-gen2: Fix clock parent for all non-PLL clocks
clk: tegra124: remove gr2d and gr3d clocks
clk: tegra: Fix vic03 mux index
clk: shmobile: rcar-gen2: Fix qspi divisor
clk: shmobile: rcar-gen2: Fix clock parent all non-PLL clocks
clk: tegra: use max divider if divider overflows
clk: tegra: cclk_lp has a pllx/2 divider
clk: tegra: fix sdmmc clks on Tegra1x4
clk: tegra: fix host1x clock on Tegra124
clk: tegra: PLLD2 fixes for hdmi
clk: tegra: Fix PLLD mnp table
clk: tegra: Fix PLLP rate table
clk: tegra: Correct clock number for UARTE
clk: tegra: Add missing Tegra20 fuse clks
ARM: keystone: dts: fix clkvcp3 control register address
...
Here is a single sysfs fix for 3.14-rc5. It fixes a reported problem
with the namespace code in sysfs.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull sysfs fix from Greg KH:
"Here is a single sysfs fix for 3.14-rc5. It fixes a reported problem
with the namespace code in sysfs"
* tag 'driver-core-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
sysfs: fix namespace refcnt leak
nfs4_release_lockowner needs to set the rpc_message reply to point to
the nfs4_sequence_res in order to avoid another Oopsable situation
in nfs41_assign_slot.
Fixes: fbd4bfd1d9 (NFS: Add nfs4_sequence calls for RELEASE_LOCKOWNER)
Cc: stable@vger.kernel.org # 3.12+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
MUXs and virtual MUXs are almost identical, the only difference is that for
virtual MUX there is no hardware backing register in which setting is stored.
This patch adds code, which is similar to what we already do for DAPM mixer
controls to support virtual mixer controls, to DAPM enum controls. The new code
will check if the enum does a hardware backing register and skip over reading
and writing to the register if it has not. This allows us to use the same code
path for both MUXs and virtual MUXs and a lot of nearly identical code can be
removed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
With the upcoming consolidation of normal MUXs and virtual MUXs we need to be
able to distinguish between enums with and without a backing register at the
enum level. Use the same approach as used for virtual mixer controls by setting
the reg field of the enum to SND_SOC_NOPM for enums without a backing register.
This patch adds a set of helper macros that can be used to define such enums.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
MUXs and value MUXs are almost identical, the only difference is that a value
MUX uses a look-up table to map from the selected control item to a register
value, while MUXs use a direct mapping. This patch uses
snd_soc_enum_item_to_val() and snd_soc_enum_val_to_item(), which where earlier
introduced during the consolidation of enum and value enum controls, to hide
this difference. This allows us to use the same code path for both MUXs and
value MUXs and a lot of nearly duplicated code can be removed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
The implementations for enum and value enum controls are almost identical. The
only difference is that the value enum uses an additional look-up table to map
the control value to the register value, while the enum control uses a direct
mapping. Enums and value enums can easily be distinguished at runtime, for value
enums the values field of the snd_soc_enum struct contains the look-up table,
while for enums it is NULL. This patch adds two new small helper functions
called snd_soc_enum_item_to_val() and snd_soc_enum_val_to_item() which map
between register value and control item. If the items field of the snd_soc_enum
struct is NULL the function will do a direct mapping otherwise they'll use the
look-up table to do the mapping. Using these small helper functions it is
possible to use the same kcontrol handlers for both enums and value enums. The
functions are added a inline functions in soc.h so they can also be used by the
DAPM code to accomplish similar consolidation.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
It's a bad habit to get a higher volume of fixes often lately, but
things happen again. All commits found here are real bug fixes,
and are mostly trivial. Most of changes in ASoC are the fixes for
enum items due to the wrong API usages, in addition to a few DAPM
mutex deadlock and other fixes. In HD-audio, only fixups for HP
laptops. Although diffstat shows much, the changes are simple:
there are just so many different device entries there.
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Merge tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"It's a bad habit to get a higher volume of fixes often lately, but
things happen again.
All commits found here are real bug fixes, and are mostly trivial.
Most of changes in ASoC are the fixes for enum items due to the wrong
API usages, in addition to a few DAPM mutex deadlock and other fixes.
In HD-audio, only fixups for HP laptops. Although diffstat shows
much, the changes are simple: there are just so many different device
entries there"
* tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: sta32x: Fix wrong enum for limiter2 release rate
ASoC: da732x: Mark DC offset control registers volatile
ALSA: hda/realtek - Add more entry for enable HP mute led
ALSA: hda - Add a fixup for HP Folio 13 mute LED
ASoC: wm8958-dsp: Fix firmware block loading
ASoC: sta32x: Fix cache sync
ALSA: hda/realtek - Add more entry for enable HP mute led
ASoC: dapm: Add locking to snd_soc_dapm_xxxx_pin functions
Input - arizona-haptics: Fix double lock of dapm_mutex
ASoC: wm8400: Fix the wrong number of enum items
ASoC: isabelle: Fix the wrong number of items in enum ctls
ASoC: ad1980: Fix wrong number of items for capture source
ASoC: wm8994: Fix the wrong number of enum items
ASoC: wm8900: Fix the wrong number of enum items
ASoC: wm8770: Fix wrong number of enum items
ASoC: sta32x: Fix array access overflow
ASoC: dapm: Correct regulator bypass error messages
