David S. Miller [Fri, 2 Aug 2013 01:08:34 +0000 (18:08 -0700)]
esp_scsi: Fix tag state corruption when autosensing.
Meelis Roos reports a crash in esp_free_lun_tag() in the presense
of a disk which has died.
The issue is that when we issue an autosense command, we do so by
hijacking the original command that caused the check-condition.
When we do so we clear out the ent->tag[] array when we issue it via
find_and_prep_issuable_command(). This is so that the autosense
command is forced to be issued non-tagged.
That is problematic, because it is the value of ent->tag[] which
determines whether we issued the original scsi command as tagged
vs. non-tagged (see esp_alloc_lun_tag()).
And that, in turn, is what trips up the sanity checks in
esp_free_lun_tag(). That function needs the original ->tag[] values
in order to free up the tag slot properly.
Fix this by remembering the original command's tag values, and
having esp_alloc_lun_tag() and esp_free_lun_tag() use them.
Reported-by: Meelis Roos <mroos@linux.ee> Tested-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>
macvlan passthrough mode is special: it's not possible to switch to or
from it through a netlink command.
But if you try, the command will succeed, which is
confusing.
Validate input and return error to user.
Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
tipc_core_start()
ret = tipc_subscr_start()
ret = tipc_server_start(){
server->enabled = 1;
ret = tipc_open_listening_sock()
}
I.e., the server->enabled flag is unconditionally set to 1, whatever
the return value of tipc_open_listening_sock().
This causes a crash when tipc_core_start() tries to clean up
resources after a failed initialization:
if (ret == failed)
tipc_subscr_stop()
tipc_server_stop(){
if (server->enabled)
tipc_close_conn(){
NULL reference of con->sock-sk
OOPS!
}
}
To avoid this, tipc_server_start() should only set server->enabled
to 1 in case of a succesful socket creation. In case of failure, it
should release all allocated resources before returning.
Problem introduced in commit c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f
("tipc: introduce new TIPC server infrastructure") in v3.11-rc1.
Note that it won't be seen often; it takes a module load under memory
constrained conditions in order to trigger the failure condition.
Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 1 Aug 2013 03:10:25 +0000 (11:10 +0800)]
net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL
Eliezer renames several *ll_poll to *busy_poll, but forgets
CONFIG_NET_LL_RX_POLL, so in case of confusion, rename it too.
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 1 Aug 2013 03:10:24 +0000 (11:10 +0800)]
net: fix a compile error when CONFIG_NET_LL_RX_POLL is not set
When CONFIG_NET_LL_RX_POLL is not set, I got:
net/socket.c: In function ‘sock_poll’:
net/socket.c:1165:4: error: implicit declaration of function ‘sk_busy_loop’ [-Werror=implicit-function-declaration]
Fix this by adding a nop when !CONFIG_NET_LL_RX_POLL.
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/mlx4_core: VFs must ignore the enable_64b_cqe_eqe module param
Slaves get the 64B CQE/EQE state from QUERY_HCA, not from the module parameter.
If the parameter is set to zero, the slave outputs an incorrect/irrelevant
warning message that 64B CQEs/EQEs are supported but not enabled (even if the
hypervisor has enabled 64B CQEs/EQEs).
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Or Gerlitz [Thu, 1 Aug 2013 16:55:00 +0000 (19:55 +0300)]
net/mlx4_core: Don't give VFs MAC addresses which are derived from the PF MAC
If the user has not assigned a MAC address to a VM, then don't give it MAC which
is based on the PF one. The current derivation scheme is wrong and leads to VM
MAC collisions when the number of cards/hypervisors becomes big enough.
Instead, just give it zeros and let them figure out what to do with that.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Thu, 1 Aug 2013 08:41:28 +0000 (10:41 +0200)]
ipv6: prevent race between address creation and removal
There's a race in IPv6 automatic addess assignment. The address is created
with zero lifetime when it's added to various address lists. Before it gets
assigned the correct lifetime, there's a window where a new address may be
configured. This causes the semi-initiated address to be deleted in
addrconf_verify.
This was discovered as a reference leak caused by concurrent run of
__ipv6_ifa_notify for both RTM_NEWADDR and RTM_DELADDR with the same
address.
Fix this by setting the lifetime before the address is added to
inet6_addr_lst.
A few notes:
1. In addrconf_prefix_rcv, by setting update_lft to zero, the
if (update_lft) { ... } condition is no longer executed for newly
created addresses. This is okay, as the ifp fields are set in
ipv6_add_addr now and ipv6_ifa_notify is called (and has been called)
through addrconf_dad_start.
2. The removal of the whole block under ifp->lock in inet6_addr_add is okay,
too, as tstamp is initialized to jiffies in ipv6_add_addr.
Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Kubeček [Thu, 1 Aug 2013 08:04:24 +0000 (10:04 +0200)]
ipv6: update ip6_rt_last_gc every time GC is run
As pointed out by Eric Dumazet, net->ipv6.ip6_rt_last_gc should
hold the last time garbage collector was run so that we should
update it whenever fib6_run_gc() calls fib6_clean_all(), not only
if we got there from ip6_dst_gc().
Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Kubeček [Thu, 1 Aug 2013 08:04:14 +0000 (10:04 +0200)]
ipv6: prevent fib6_run_gc() contention
On a high-traffic router with many processors and many IPv6 dst
entries, soft lockup in fib6_run_gc() can occur when number of
entries reaches gc_thresh.
This happens because fib6_run_gc() uses fib6_gc_lock to allow
only one thread to run the garbage collector but ip6_dst_gc()
doesn't update net->ipv6.ip6_rt_last_gc until fib6_run_gc()
returns. On a system with many entries, this can take some time
so that in the meantime, other threads pass the tests in
ip6_dst_gc() (ip6_rt_last_gc is still not updated) and wait for
the lock. They then have to run the garbage collector one after
another which blocks them for quite long.
Resolve this by replacing special value ~0UL of expire parameter
to fib6_run_gc() by explicit "force" parameter to choose between
spin_lock_bh() and spin_trylock_bh() and call fib6_run_gc() with
force=false if gc_thresh is reached but not max_size.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
PCI: mvebu: Disable prefetchable memory support in PCI-to-PCI bridge
The Marvell PCIe driver uses an emulated PCI-to-PCI bridge to be able
to dynamically set up MBus address decoding windows for PCI I/O and
memory regions depending on the PCI devices enumerated by Linux.
However, this emulated PCI-to-PCI bridge logic makes the Linux PCI
core believe that prefetchable memory regions are supported (because
the registers are read/write), while in fact no adress decoding window
is ever created for such regions. Since the Marvell MBus address
decoding windows do not distinguish memory regions and prefetchable
memory regions, this patch takes a simple approach: change the
PCI-to-PCI bridge emulation to let the Linux PCI core know that we
don't support prefetchable memory regions.
To achieve this, we simply make the prefetchable memory base a
read-only register that always returns 0. Reading/writing all the
other prefetchable memory related registers has no effect.
This problem was originally reported by Finn Hoffmann
<finn@uni-bremen.de>, who couldn't get a RTL8111/8168B PCI NIC working
on the NSA310 Kirkwood platform after updating to 3.11-rc. The problem
was that the PCI-to-PCI bridge emulation was making the Linux PCI core
believe that we support prefetchable memory, so the Linux PCI core was
only filling the prefetchable memory base and limit registers, which
does not lead to a MBus window being created. The below patch has been
confirmed by Finn Hoffmann to fix his problem on Kirkwood, and has
otherwise been successfully tested on the Armada XP GP platform with a
e1000e PCIe NIC and a Marvell SATA PCIe card.
Reported-by: Finn Hoffmann <finn@uni-bremen.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
David S. Miller [Thu, 1 Aug 2013 19:57:52 +0000 (12:57 -0700)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
This pull request is intended for the 3.11 stream. It is a bit
larger than usual, as it includes pulls from most of my feeder trees
as well...
For the Bluetooth bits, Gustavo says:
"A few fixes and devices ID additions for 3.11:
* There are 4 new ath3k device ids
* Fixed stack memory usage in ath3k.
* Fixed the init process of BlueFRITZ! devices, they were failing to init
due to an unsupported command we sent.
* Fixed wrong use of PTR_ERR in btusb code that was preventing intel devices
to work properly.
* Fixed race condition between hci_register_dev() and hci_dev_open() that
could cause a NULL pointer dereference.
* Fixed race condition that could call hci_req_cmd_complete() and make some
devices to fail as showed in the log added to the commit message."
Regarding the NFC bits, Samuel says:
"We have:
1) A build failure fix for the NCI SPI transport layer due to a
missing CRC_CCITT Kconfig dependency.
2) A netlink command rename: CMD_FW_UPLOAD was merged during the 3.11
merge window but the typical terminology for loading a firmware to a
target is firmware download rather than upload. In order to avoid any
confusion in a file exported to userspace, we rename this command to
CMD_FW_DOWNLOAD."
Samuel's item #2 isn't strictly a fix, but it seems safe and should
avoid confusion in the future.
As for the mac80211 bits, Johannes says:
"I only have three fixes this time, a fix for a suspend regression, a
patch correcting the initiator in regulatory code and one fix for mesh
station powersave."
With respect to the iwlwifi bits, Johannes says:
"We have a scan fix for passive channels, a new PCI device ID for an old
device, a NIC reset fix, an RF-Kill fix, a fix for powersave when GO
interfaces are present as well as an aggregation session fix (for a
corner case) and a workaround for a firmware design issue - it only
supports a single GTK in D3."
Bringing-up the rear with the Atheros trees, Kalle says:
"Geert Uytterhoeven fixed an ath10k build problem when NO_DMA=y. I added
a missing MAINTAINERS entry for ath10k and updated ath6kl git tree
location."
Along with the above...
Arend van Spriel fixes a brcmfmac WARNING when unplugging the device.
Avinash Patil proves a couple of minor mwifiex fixes relating to P2P mode.
Luciano Coelho updates the MAINTAINERS entry for the wilink drivers.
Stanislaw Gruszka brings an rt2x00 fix for a queue start/stop problem.
Stone Piao fixes another mwifiex problem, a command timeout related to P2P mode.
Tomasz Moń corrects an endian problem in mwifiex.
I'll remind my feeder maintainers to slowdown the patchflow.
Beyond that, please let me know if there are problems!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Wed, 31 Jul 2013 10:37:17 +0000 (11:37 +0100)]
ARM: Add .text annotations where required after __CPUINIT removal
Commit 8bd26e3a7 (arm: delete __cpuinit/__CPUINIT usage from all ARM
users) caused some code to leak into sections which are discarded
through the removal of __CPUINIT annotations. Add appropriate .text
annotations to bring these back into the kernel text.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Stephen Boyd [Tue, 30 Jul 2013 22:09:46 +0000 (23:09 +0100)]
ARM: 7803/1: Fix deadlock scenario with smp_send_stop()
If one process calls sys_reboot and that process then stops other
CPUs while those CPUs are within a spin_lock() region we can
potentially encounter a deadlock scenario like below.
CPU 0 CPU 1
----- -----
spin_lock(my_lock)
smp_send_stop()
<send IPI> handle_IPI()
disable_preemption/irqs
while(1);
<PREEMPT>
spin_lock(my_lock) <--- Waits forever
We shouldn't attempt to run any other tasks after we send a stop
IPI to a CPU so disable preemption so that this task runs to
completion. We use local_irq_disable() here for cross-arch
consistency with x86.
Reported-by: Sundarajan Srinivasan <sundaraj@codeaurora.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARC ASID allocator used asid_mm_map[ ] to find a mm corresponding to an
ASID. This would help identify an existing assignee (from a prev
allocation cycle) and force it to be marked as unallocated so that it
would know to refresh it's ASID when it's mm is switched.
Without the reverse map, it is not possible to reach out to current
assignee so we track the ASID allocations generations and on every
switch mm, refresh the ASID if it is from prev generation.
The motivation for this change is SMP ASID allocatino which wiuld have
required a multi-dimensional asid-to-mmp[ ][ ].
ARC: [ASID] get_new_mmu_context() to conditionally allocate new ASID
ASID allocation changes/1
This patch does 2 things:
(1) get_new_mmu_context() NOW moves mm->ASID to a new value ONLY if it
was from a prev allocation cycle/generation OR if mm had no ASID
allocated (vs. before would unconditionally moving to a new ASID)
Callers desiring unconditional update of ASID, e.g.local_flush_tlb_mm()
(for parent's address space invalidation at fork) need to first force
the parent to an unallocated ASID.
(2) get_new_mmu_context() always sets the MMU PID reg with unchanged/new
ASID value.
The gains are:
- consolidation of all asid alloc logic into get_new_mmu_context()
- avoiding code duplication in switch_mm() for PID reg setting
- Enables future change to fold activate_mm() into switch_mm()
Takashi Iwai [Thu, 1 Aug 2013 09:12:10 +0000 (11:12 +0200)]
Merge tag 'asoc-v3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.11
A fix to make sure userspace knows when control writes have caused a
change in value, fixing some UIs, plus a few few driver fixes mainly
cleaning up issues from recent refactorings on less mainstream platforms.
Aaro Koskinen [Sun, 21 Jul 2013 00:30:11 +0000 (03:30 +0300)]
powerpc/windfarm: Fix noisy slots-fan on Xserve (rm31)
slots-fan on G5 Xserve is always running at full speed with windfarm_rm31
driver, resulting in a very high acoustic noise level. It seems the fan
parameters are incorrect, and have been copied from the Drive Bay fan
(RPM, not present on rm31) of the legacy therm_pm72 driver. This patch
changes the parameters to match the Slots fan (PWM) of therm_pm72. With
the patch, slots-fan speed drops from 99% to 19% during normal use,
and slots-temp settle to ~42'C.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> CC: <stable@vger.kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Robert Jennings [Thu, 25 Jul 2013 01:13:21 +0000 (20:13 -0500)]
powerpc: VPHN topology change updates all siblings
When an associativity level change is found for one thread, the
siblings threads need to be updated as well. This is done today
for PRRN in stage_topology_update() but is missing for VPHN in
update_cpu_associativity_changes_mask(). This patch will correctly
update all thread siblings during a topology change.
Without this patch a topology update can result in a CPU in
init_sched_groups_power() getting stuck indefinitely in a loop.
This loop is built in build_sched_groups(). As a result of the thread
moving to a node separate from its siblings the struct sched_group will
have its next pointer set to point to itself rather than the sched_group
struct of the next thread. This happens because we have a domain without
the SD_OVERLAP flag, which is correct, and a topology that doesn't conform
with reality (threads on the same core assigned to different numa nodes).
When this list is traversed by init_sched_groups_power() it will reach
the thread's sched_group structure and loop indefinitely; the cpu will
be stuck at this point.
The bug was exposed when VPHN was enabled in commit b7abef0 (v3.9).
Cc: <stable@vger.kernel.org> [v3.9+] Reported-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Tue, 23 Jul 2013 08:07:45 +0000 (18:07 +1000)]
powerpc/perf: Export PERF_EVENT_CONFIG_EBB_SHIFT to userspace
We use bit 63 of the event code for userspace to request that the event
be counted using EBB (Event Based Branches). Export this value, making
it part of the API - though only on processors that support EBB.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Back in commit 89713ed "Add timer, performance monitor and machine check
counts to /proc/interrupts" we added a count of PMU interrupts to the
output of /proc/interrupts.
At the time we named them "CNT" to match x86.
However in commit 89ccf46 "Rename 'performance counter interrupt'", the
x86 guys renamed theirs from "CNT" to "PMI".
Arguably changing the name could break someone's script, but I think the
chance of that is minimal, and it's preferable to have a name that 1) is
somewhat meaningful, and 2) matches x86.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Asias He [Thu, 1 Aug 2013 01:37:18 +0000 (11:07 +0930)]
virtio-scsi: Fix virtqueue affinity setup
vscsi->num_queues counts the number of request virtqueue which does not
include the control and event virtqueue. It is wrong to subtract
VIRTIO_SCSI_VQ_BASE from vscsi->num_queues.
Linus Torvalds [Thu, 1 Aug 2013 00:55:12 +0000 (17:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Radeon, nouveau, exynos, intel, mgag200..
Not all strictly regressions but there was probably only one patch I'd
have really left out and it didn't seem worth respinning exynos to
avoid it, the line change count is quite low.
radeon: regressions + more dynamic powermanagement fixes, since DPM
is a new feature, and off by default I'd prefer to keep merging
fixes since it has a large userbase already and I'd like to keep
them on mainline
nouveau: is mostly regression fixes
i915: is a regression fix since Daniel is on holidays I've merged it.
mgag200: I've picked a bunch of targetted fixes from a big bunch of
distro patches,
exynos: build fixes mostly, one regression fix
I expect things will slow right down now, I may send on the intel
early quirk from Jesse separatly, since I think the x86 maintainers
acked it"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (37 commits)
drm/i915: fix missed hunk after GT access breakage
drm/radeon/dpm: re-enable cac control on SI
drm/radeon/dpm: fix calculations in si_calculate_leakage_for_v_and_t_formula
drm: fix 64 bit drm fixed point helpers
drm/radeon/atom: initialize more atom interpretor elements to 0
drm/nouveau: fix semaphore dmabuf obj
drm/nouveau/vm: make vm refcount into a kref
drm/nv31/mpeg: don't recognize nv3x cards as having nv44 graph class
drm/nv40/mpeg: write magic value to channel object to make it work
drm/nouveau: fix size check for cards without vm
drm/nv50-/disp: remove dcb_outp_match call, and related variables
drm/nva3-/disp: fix hda eld writing, needs to be padded
drm/nv31/mpeg: fix mpeg engine initialization
drm/nv50/mc: include vp in the fb error reporting mask
drm/nouveau: fix null pointer dereference in poll_changed
drm/nv50/gpio: post-nv92 cards have 32 interrupt lines
drm/nvc0/fb: take lock in nvc0_ram_put()
drm/nouveau/core: xtensa firmware size needs to be 0x40000 no matter what
drm/mgag200: Fix LUT programming for 16bpp
drm/mgag200: Fix framebuffer pitch calculation
...
Linus Torvalds [Thu, 1 Aug 2013 00:53:38 +0000 (17:53 -0700)]
Merge tag 'vfio-v3.11-rc4' of git://github.com/awilliam/linux-vfio
Pull vfio fixes from Alex Williamson:
"misc fixes around overreacting to bus notifier events and a locking
fix for a corner case blocked remove"
* tag 'vfio-v3.11-rc4' of git://github.com/awilliam/linux-vfio:
vfio-pci: Avoid deadlock on remove
vfio: Ignore sprurious notifies
vfio: Don't overreact to DEL_DEVICE
Linus Torvalds [Thu, 1 Aug 2013 00:52:04 +0000 (17:52 -0700)]
Merge branch 'akpm' (patches from Andrew Morton)
Merge more patches from Andrew Morton:
"A bunch of fixes.
Plus Joe's printk move and rework. It's not a -rc3 thing but now
would be a nice time to offload it, while things are quiet. I've been
sitting on it all for a couple of weeks, no issues"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
vmpressure: make sure there are no events queued after memcg is offlined
vmpressure: do not check for pending work to prevent from new work
vmpressure: change vmpressure::sr_lock to spinlock
printk: rename struct log to struct printk_log
printk: use pointer for console_cmdline indexing
printk: move braille console support into separate braille.[ch] files
printk: add console_cmdline.h
printk: move to separate directory for easier modification
drivers/rtc/rtc-twl.c: fix: rtcX/wakealarm attribute isn't created
mm: zbud: fix condition check on allocation size
thp, mm: avoid PageUnevictable on active/inactive lru lists
mm/swap.c: clear PageActive before adding pages onto unevictable list
arch/x86/platform/ce4100/ce4100.c: include reboot.h
mm: sched: numa: fix NUMA balancing when !SCHED_DEBUG
rapidio: fix use after free in rio_unregister_scan()
.gitignore: ignore *.lz4 files
MAINTAINERS: dynamic debug: Jason's not there...
dmi_scan: add comments on dmi_present() and the loop in dmi_scan_machine()
ocfs2/refcounttree: add the missing NULL check of the return value of find_or_create_page()
mm: mempolicy: fix mbind_range() && vma_adjust() interaction
If there is no querier on a link then we won't get periodic reports and
therefore won't be able to learn about multicast listeners behind ports,
potentially leading to lost multicast packets, especially for multicast
listeners that joined before the creation of the bridge.
These lost multicast packets can appear since c5c23260594
("bridge: Add multicast_querier toggle and disable queries by default")
in particular.
With this patch we are flooding multicast packets if our querier is
disabled and if we didn't detect any other querier.
A grace period of the Maximum Response Delay of the querier is added to
give multicast responses enough time to arrive and to be learned from
before disabling the flooding behaviour again.
Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Wed, 31 Jul 2013 13:03:56 +0000 (09:03 -0400)]
8139cp: Add dma_mapping_error checking
Self explanitory dma_mapping_error addition to the 8139 driver, based on this:
https://bugzilla.redhat.com/show_bug.cgi?id=947250
It showed several backtraces arising for dma_map_* usage without checking the
return code on the mapping. Add the check and abort the rx/tx operation if its
failed. Untested as I have no hardware and the reporter has wandered off, but
seems pretty straightforward.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Tue, 30 Jul 2013 10:23:39 +0000 (13:23 +0300)]
net_sched: info leak in atm_tc_dump_class()
The "pvc" struct has a hole after pvc.sap_family which is not cleared.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
net/usb/r8152: make sure the USB buffer is DMA-able
Allocate the required memory before calling usb_control_msg. And
the additional memory copy is necessary.
Signed-off-by: Hayes Wang <hayeswang@realtek.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
net/usb/r815x: avoid to call mdio functions for runtime-suspended device
Don't replace the usb_control_msg() with usbnet_{read,write}_cmd()
which couldn't be called inside suspend/resume callback. Keep the
basic functions unlimited. Instead, using usb_autopm_get_interface()
and usb_autopm_put_interface() in r815x_mdio_{read,write}().
Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/usb/r815x: replace USB buffer from stack to DMA-able
Some USB buffers use stack which may not be DMA-able.
Use the buffers from kmalloc to replace those one.
Signed-off-by: Hayes Wang <hayeswang@realtek.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Hocko [Wed, 31 Jul 2013 20:53:51 +0000 (13:53 -0700)]
vmpressure: make sure there are no events queued after memcg is offlined
vmpressure is called synchronously from reclaim where the target_memcg
is guaranteed to be alive but the eventfd is signaled from the work
queue context. This means that memcg (along with vmpressure structure
which is embedded into it) might go away while the work item is pending
which would result in use-after-release bug.
We have two possible ways how to fix this. Either vmpressure pins memcg
before it schedules vmpr->work and unpin it in vmpressure_work_fn or
explicitely flush the work item from the css_offline context (as
suggested by Tejun).
This patch implements the later one and it introduces vmpressure_cleanup
which flushes the vmpressure work queue item item. It hooks into
mem_cgroup_css_offline after the memcg itself is cleaned up.
[akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Michal Hocko <mhocko@suse.cz> Reported-by: Tejun Heo <tj@kernel.org> Cc: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Li Zefan <lizefan@huawei.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Wed, 31 Jul 2013 20:53:48 +0000 (13:53 -0700)]
vmpressure: change vmpressure::sr_lock to spinlock
There is nothing that can sleep inside critical sections protected by
this lock and those sections are really small so there doesn't make much
sense to use mutex for them. Change the log to a spinlock
Signed-off-by: Michal Hocko <mhocko@suse.cz> Reported-by: Tejun Heo <tj@kernel.org> Cc: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Li Zefan <lizefan@huawei.com> Reviewed-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 31 Jul 2013 20:53:47 +0000 (13:53 -0700)]
printk: rename struct log to struct printk_log
Rename the struct to enable moving portions of
printk.c to separate files.
The rename changes output of /proc/vmcoreinfo.
Signed-off-by: Joe Perches <joe@perches.com> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 31 Jul 2013 20:53:46 +0000 (13:53 -0700)]
printk: use pointer for console_cmdline indexing
Make the code a bit more compact by always using a pointer for the active
console_cmdline.
Move overly indented code to correct indent level.
Signed-off-by: Joe Perches <joe@perches.com> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 31 Jul 2013 20:53:45 +0000 (13:53 -0700)]
printk: move braille console support into separate braille.[ch] files
Create files with prototypes and static inlines for braille support. Make
braille_console functions return 1 on success.
Corrected CONFIG_A11Y_BRAILLE_CONSOLE=n _braille_console_setup
return value to NULL.
Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 31 Jul 2013 20:53:44 +0000 (13:53 -0700)]
printk: add console_cmdline.h
Add an include file for the console_cmdline struct so that the braille
console driver can be separated.
Signed-off-by: Joe Perches <joe@perches.com> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 31 Jul 2013 20:53:42 +0000 (13:53 -0700)]
printk: move to separate directory for easier modification
Make it easier to break up printk into bite-sized chunks.
Remove printk path/filename from comment.
Signed-off-by: Joe Perches <joe@perches.com> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/rtc/rtc-twl.c: fix: rtcX/wakealarm attribute isn't created
The device_init_wakeup() should be called before rtc_device_register().
Otherwise, sysfs "sys/class/rtc/rtcX/wakealarm" attribute will not be seen
from User space.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Kevin Hilman <khilman@linaro.org> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
zbud_alloc() incorrectly verifies the size of allocation limit. It
should deny the allocation request greater than (PAGE_SIZE -
ZHDR_SIZE_ALIGNED - CHUNK_SIZE), not (PAGE_SIZE - ZHDR_SIZE_ALIGNED)
which has no remaining spaces for its buddy. There is no point in
spending the entire zbud page storing only a single page, since we don't
have any benefits.
Signed-off-by: Heesub Shin <heesub.shin@samsung.com> Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com> Cc: Bob Liu <bob.liu@oracle.com> Cc: Dongjun Shin <d.j.shin@samsung.com> Cc: Sunae Seo <sunae.seo@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
thp, mm: avoid PageUnevictable on active/inactive lru lists
active/inactive lru lists can contain unevicable pages (i.e. ramfs pages
that have been placed on the LRU lists when first allocated), but these
pages must not have PageUnevictable set - otherwise shrink_[in]active_list
goes crazy:
kernel BUG at /home/space/kas/git/public/linux-next/mm/vmscan.c:1122!
__isolate_lru_page() returns EINVAL for PageUnevictable(page).
For lru_add_page_tail(), it means we should not set PageUnevictable()
for tail pages unless we're sure that it will go to LRU_UNEVICTABLE.
Let's just copy PG_active and PG_unevictable from head page in
__split_huge_page_refcount(), it will simplify lru_add_page_tail().
This will fix one more bug in lru_add_page_tail(): if
page_evictable(page_tail) is false and PageLRU(page) is true, page_tail
will go to the same lru as page, but nobody cares to sync page_tail
active/inactive state with page. So we can end up with inactive page on
active lru. The patch will fix it as well since we copy PG_active from
head page.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mgorman@suse.de> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/swap.c: clear PageActive before adding pages onto unevictable list
As a result of commit 13f7f78981e4 ("mm: pagevec: defer deciding which
LRU to add a page to until pagevec drain time"), pages on unevictable
lists can have both of PageActive and PageUnevictable set. This is not
only confusing, but also corrupts page migration and
shrink_[in]active_list.
This patch fixes the problem by adding ClearPageActive before adding
pages into unevictable list. It also cleans up VM_BUG_ONs.
Andrew Morton [Wed, 31 Jul 2013 20:53:36 +0000 (13:53 -0700)]
arch/x86/platform/ce4100/ce4100.c: include reboot.h
Fix the build:
arch/x86/platform/ce4100/ce4100.c: In function 'x86_ce4100_early_setup':
arch/x86/platform/ce4100/ce4100.c:165:2: error: 'reboot_type' undeclared (first use in this function)
Reported-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dave Kleikamp [Wed, 31 Jul 2013 20:53:35 +0000 (13:53 -0700)]
mm: sched: numa: fix NUMA balancing when !SCHED_DEBUG
Commit 3105b86a9fee ("mm: sched: numa: Control enabling and disabling of
NUMA balancing if !SCHED_DEBUG") defined numabalancing_enabled to
control the enabling and disabling of automatic NUMA balancing, but it
is never used.
I believe the intention was to use this in place of sched_feat_numa(NUMA).
Currently, if SCHED_DEBUG is not defined, sched_feat_numa(NUMA) will
never be changed from the initial "false".
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Acked-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ben Hutchings [Wed, 31 Jul 2013 20:53:30 +0000 (13:53 -0700)]
dmi_scan: add comments on dmi_present() and the loop in dmi_scan_machine()
My previous refactoring in commit 79bae42d51a5 ("dmi_scan: refactor
dmi_scan_machine(), {smbios,dmi}_present()") resulted in slightly tricky
code (though I think it's more elegant). Explain what it's doing.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Zhenzhong Duan <zhenzhong.duan@oracle.com> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1) Fix association failures not triggering a connect-failure event in
cfg80211, from Johannes Berg.
2) Eliminate a potential NULL deref with older iptables tools when
configuring xt_socket rules, from Eric Dumazet.
3) Missing RTNL locking in wireless regulatory code, from Johannes
Berg.
4) Fix OOPS caused by firmware loading races in ath9k_htc, from Alexey
Khoroshilov.
5) Fix usb URB leak in usb_8dev CAN driver, also from Alexey
Khoroshilov.
6) VXLAN namespace teardown fails to unregister devices, from Stephen
Hemminger.
7) Fix multicast settings getting dropped by firmware in qlcnic driver,
from Sucheta Chakraborty.
8) Add sysctl range enforcement for tcp_syn_retries, from Michal Tesar.
9) Fix a nasty bug in bridging where an active timer would get
reinitialized with a setup_timer() call. From Eric Dumazet.
10) Fix use after free in new mlx5 driver, from Dan Carpenter.
11) Fix freed pointer reference in ipv6 multicast routing on namespace
cleanup, from Hannes Frederic Sowa.
12) Some usbnet drivers report TSO and SG in their feature set, but the
usbnet layer doesn't really support them. From Eric Dumazet.
13) Fix crash on EEH errors in tg3 driver, from Gavin Shan.
14) Drop cb_lock when requesting modules in genetlink, from Stanislaw
Gruszka.
15) Kernel stack leaks in cbq scheduler and af_key pfkey messages, from
Dan Carpenter.
16) FEC driver erroneously signals NETDEV_TX_BUSY on transmit leading to
endless loops, from Uwe Kleine-König.
17) Fix hangs from loading mvneta driver, from Arnaud Patard.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (84 commits)
mlx5: fix error return code in mlx5_alloc_uuars()
mvneta: Try to fix mvneta when compiled as module
mvneta: Fix hang when loading the mvneta driver
atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring
genetlink: fix usage of NLM_F_EXCL or NLM_F_REPLACE
af_key: more info leaks in pfkey messages
net/fec: Don't let ndo_start_xmit return NETDEV_TX_BUSY without link
net_sched: Fix stack info leak in cbq_dump_wrr().
igb: fix vlan filtering in promisc mode when not in VT mode
ixgbe: Fix Tx Hang issue with lldpad on 82598EB
genetlink: release cb_lock before requesting additional module
net: fec: workaround stop tx during errata ERR006358
qlcnic: Fix diagnostic interrupt test for 83xx adapters.
qlcnic: Fix setting Guest VLAN
qlcnic: Fix operation type and command type.
qlcnic: Fix initialization of work function.
Revert "atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring"
atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring
net/tg3: Fix warning from pci_disable_device()
net/tg3: Fix kernel crash
...
John W. Linville [Wed, 31 Jul 2013 19:15:50 +0000 (15:15 -0400)]
Merge tag 'nfc-fixes-3.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-fixes
Samuel Ortiz <sameo@linux.intel.com> says:
'This is the second NFC fixes pull request for 3.11.
We have:
- A build failure fix for the NCI SPI transport layer due to a
missing CRC_CCITT Kconfig dependency.
- A netlink command rename: CMD_FW_UPLOAD was merged during the 3.11
merge window but the typical terminology for loading a firmware to a
target is firmware download rather than upload. In order to avoid any
confusion in a file exported to userspace, we rename this command into
CMD_FW_DOWNLOAD."
Signed-off-by: John W. Linville <linville@tuxdriver.com>
mwifiex: check for bss_role instead of bss_mode for STA operations
This patch fixes an issue wherein association would fail on P2P
interfaces. This happened because we are checking priv->mode
against NL80211_IFTYPE_STATION. While this check is correct for
infrastructure stations, it would fail P2P clients for which mode
is NL80211_IFTYPE_P2P_CLIENT.
Better check would be bss_role which has only 2 values: STA/AP.
Cc: <stable@vger.kernel.org> # 3.10.y Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Stone Piao <piaoyun@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
- BMIPS SMP fixes
- a build fix necessary for older compilers
- two more bugs found my Chandras' testing
- and one more build fix
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: BMIPS: fix slave CPU booting when physical CPU is not 0
MIPS: BMIPS: do not change interrupt routing depending on boot CPU
MIPS: powertv: Fix arguments for free_reserved_area()
MIPS: Set default CPU type for BCM47XX platforms
MIPS: uapi/asm/siginfo.h: Fix GCC 4.1.2 compilation
MIPS: Fix multiple definitions of UNCAC_BASE.
Merge tag 'stable/for-linus-3.11-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen fixes from Konrad Rzeszutek Wilk:
- Three fixes for ARM/ARM64 to either compile or not certain generic
drivers
- Fix for avoiding a potential deadlock when an user space event
channel is destroyed.
- Fix a workqueue resuming multiple times.
* tag 'stable/for-linus-3.11-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/tmem: do not allow XEN_TMEM on ARM64
xen/evtchn: avoid a deadlock when unbinding an event channel
xen/arm: enable PV control for ARM
xen/arm64: Don't compile cpu hotplug
xenbus: frontend resume cleanup
projects / karo-tx-linux.git / log