06 Feb, 2015
9 commits
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The symbol 'high_memory' is provided on both MMU- and NOMMU-kernels, but
only one of them is exported, which leads to module build errors in
drivers that work fine built-in:ERROR: "high_memory" [drivers/net/virtio_net.ko] undefined!
ERROR: "high_memory" [drivers/net/ppp/ppp_mppe.ko] undefined!
ERROR: "high_memory" [drivers/mtd/nand/nand.ko] undefined!
ERROR: "high_memory" [crypto/tcrypt.ko] undefined!
ERROR: "high_memory" [crypto/cts.ko] undefined!This exports the symbol to get these to work on NOMMU as well.
Signed-off-by: Arnd Bergmann
Cc: Kirill A. Shutemov
Acked-by: Greg Ungerer
Acked-by: David Rientjes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
get_maintainer.pl returns k.khlebnikov@samsung.com via git history, for
which emails get rejected:RCPT TO:
550 5.1.1 Recipient address rejected: User unknownUse his other address that passes vger's mxverify:
RCPT TO:
250 2.1.5 OK ir10si13843754pbc.62 - gsmtpand add his old email address in the wrong email address field.
Signed-off-by: Kim Phillips
Acked-by: Konstantin Khlebnikov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
walk_page_range() silently skips vma having VM_PFNMAP set, which leads
to undesirable behaviour at client end (who called walk_page_range).
Userspace applications get the wrong data, so the effect is like just
confusing users (if the applications just display the data) or sometimes
killing the processes (if the applications do something with
misunderstanding virtual addresses due to the wrong data.)For example for pagemap_read, when no callbacks are called against
VM_PFNMAP vma, pagemap_read may prepare pagemap data for next virtual
address range at wrong index.Eventually userspace may get wrong pagemap data for a task.
Corresponding to a VM_PFNMAP marked vma region, kernel may report
mappings from subsequent vma regions. User space in turn may account
more pages (than really are) to the task.In my case I was using procmem, procrack (Android utility) which uses
pagemap interface to account RSS pages of a task. Due to this bug it
was giving a wrong picture for vmas (with VM_PFNMAP set).Fixes: a9ff785e4437 ("mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas")
Signed-off-by: Shiraz Hashim
Acked-by: Naoya Horiguchi
Cc: [3.10+]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Pull networking fixes from David Miller:
1) Stretch ACKs can kill performance with Reno and CUBIC congestion
control, largely due to LRO and GRO. Fix from Neal Cardwell.2) Fix userland breakage because we accidently emit zero length netlink
messages from the bridging code. From Roopa Prabhu.3) Carry handling in generic csum_tcpudp_nofold is broken, fix from
Karl Beldan.4) Remove bogus dev_set_net() calls from CAIF driver, from Nicolas
Dichtel.5) Make sure PPP deflation never returns a length greater then the
output buffer, otherwise we overflow and trigger skb_over_panic().
Fix from Florian Westphal.6) COSA driver needs VIRT_TO_BUS Kconfig dependencies, from Arnd
Bergmann.7) Don't increase route cached MTU on datagram too big ICMPs. From Li
Wei.8) Fix error path leaks in nf_tables, from Pablo Neira Ayuso.
9) Fix bitmask handling regression in netlink that broke things like
acpi userland tools. From Pablo Neira Ayuso.10) Wrong header pointer passed to param_type2af() in SCTP code, from
Saran Maruti Ramanara.11) Stacked vlans not handled correctly by vlan_get_protocol(), from
Toshiaki Makita.12) Add missing DMA memory barrier to xgene driver, from Iyappan
Subramanian.13) Fix crash in rate estimators, from Eric Dumazet.
14) We've been adding various workarounds, one after another, for the
change which added the per-net tcp_sock. It was meant to reduce
socket contention but added lots of problems.Reduce this instead to a proper per-cpu socket and that rids us of
all the daemons.From Eric Dumazet.
15) Fix memory corruption and OOPS in mlx4 driver, from Jack
Morgenstein.16) When we disabled UFO in the virtio_net device, it introduces some
serious performance regressions. The orignal problem was IPV6
fragment ID generation, so fix that properly instead. From Vlad
Yasevich.17) sr9700 driver build breaks on xtensa because it defines macros with
the same name as those used by the arch code. Use more unique
names. From Chen Gang.18) Fix endianness in new virio 1.0 mode of the vhost net driver, from
Michael S Tsirkin.19) Several sysctls were setting the maxlen attribute incorrectly, from
Sasha Levin.20) Don't accept an FQ scheduler quantum of zero, that leads to crashes.
From Kenneth Klette Jonassen.21) Fix dumping of non-existing actions in the packet scheduler
classifier. From Ignacy Gawędzki.22) Return the write work_done value when doing TX work in the qlcnic
driver.23) ip6gre_err accesses the info field with the wrong endianness, from
Sabrina Dubroca.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (54 commits)
sit: fix some __be16/u16 mismatches
ipv6: fix sparse errors in ip6_make_flowlabel()
net: remove some sparse warnings
flow_keys: n_proto type should be __be16
ip6_gre: fix endianness errors in ip6gre_err
qlcnic: Fix NAPI poll routine for Tx completion
amd-xgbe: Set RSS enablement based on hardware features
amd-xgbe: Adjust for zero-based traffic class count
cls_api.c: Fix dumping of non-existing actions' stats.
pkt_sched: fq: avoid hang when quantum 0
net: rds: use correct size for max unacked packets and bytes
vhost/net: fix up num_buffers endian-ness
gianfar: correct the bad expression while writing bit-pattern
net: usb: sr9700: Use 'SR_' prefix for the common register macros
Revert "drivers/net: Disable UFO through virtio"
Revert "drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets"
ipv6: Select fragment id during UFO segmentation if not set.
xen-netback: stop the guest rx thread after a fatal error
net/mlx4_core: Fix kernel Oops (mem corruption) when working with more than 80 VFs
isdn: off by one in connect_res()
... -
Pull SCSI fixes from James Bottomley:
"This patch set is fixing two serious problems which have turned up
late in the release cycle.The first fixes a problem with 4k sector disks where the transfer
length (amount of data sent to the disk) was getting increased every
time the disk was revalidated leading to potential for overflows.The other is a regression oops fix for some of our last merge window
code"* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
sd: Fix max transfer length for 4k disks
scsi: fix device handler detach oops -
Pull drm fixes from Dave Airlie:
"Radeon and amdkfd fixes.Radeon ones mostly for oops in some test/benchmark functions since
fencing changes, and one regression fix for old GPUs,There is one cirrus regression fix, the 32bpp broke userspace, so this
hides it behind a module option for the few users who care.I'm off for a few days, so this is probably the final pull I have, if
I see fixes from Intel I'll forward the pull as I should have email"* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/cirrus: Limit modes depending on bpp option
drm/radeon: fix the crash in test functions
drm/radeon: fix the crash in benchmark functions
drm/radeon: properly set vm fragment size for TN/RL
drm/radeon: don't init gpuvm if accel is disabled (v3)
drm/radeon: fix PLLs on RS880 and older v2
drm/amdkfd: Don't create BUG due to incorrect user parameter
drm/amdkfd: max num of queues can't be 0
drm/amdkfd: Fix bug in accounting of queues -
Pull spi fixes from Mark Brown:
"A couple of driver specific fixes:- Disable DMA mode for i.MX6DL chips due to a hardware bug.
- Don't use devm_kzalloc() outside of bind/unbind paths in the
fsl-dspi driver, fixing memory leaks"* tag 'spi-v3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: imx: use pio mode for i.mx6dl
spi: spi-fsl-dspi: Remove usage of devm_kzalloc -
Pull ACPI power management fix from Rafael Wysocki:
"This is a revert of an ACPI Low-power Subsystem (LPSS) driver change
that was supposed to improve power management of the LPSS DMA
controller, but introduced more serious problems.Since fixing them turns out to be non-trivial, it is better to revert
the commit in question at this point and try to fix the original issue
differently in the next cycle"* tag 'pm+acpi-3.19-fin' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPI / LPSS: introduce a 'proxy' device to power on LPSS for DMA" -
Pull PCI fixes from Bjorn Helgaas:
"Enumeration
- Scan all device numbers on NEC as well as Stratus (Charlotte Richardson)Resource management
- Handle read-only BARs on AMD CS553x devices (Myron Stowe)Synopsys DesignWare
- Reject MSI-X IRQs (Lucas Stach)"* tag 'pci-v3.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Handle read-only BARs on AMD CS553x devices
PCI: Add NEC variants to Stratus ftServer PCIe DMI check
PCI: designware: Reject MSI-X IRQs
05 Feb, 2015
18 commits
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Fixes following sparse warnings :
net/ipv6/sit.c:1509:32: warning: incorrect type in assignment (different base types)
net/ipv6/sit.c:1509:32: expected restricted __be16 [usertype] sport
net/ipv6/sit.c:1509:32: got unsigned short
net/ipv6/sit.c:1514:32: warning: incorrect type in assignment (different base types)
net/ipv6/sit.c:1514:32: expected restricted __be16 [usertype] dport
net/ipv6/sit.c:1514:32: got unsigned short
net/ipv6/sit.c:1711:38: warning: incorrect type in argument 3 (different base types)
net/ipv6/sit.c:1711:38: expected unsigned short [unsigned] [usertype] value
net/ipv6/sit.c:1711:38: got restricted __be16 [usertype] sport
net/ipv6/sit.c:1713:38: warning: incorrect type in argument 3 (different base types)
net/ipv6/sit.c:1713:38: expected unsigned short [unsigned] [usertype] value
net/ipv6/sit.c:1713:38: got restricted __be16 [usertype] dportSigned-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
include/net/ipv6.h:713:22: warning: incorrect type in assignment (different base types)
include/net/ipv6.h:713:22: expected restricted __be32 [usertype] hash
include/net/ipv6.h:713:22: got unsigned int
include/net/ipv6.h:719:25: warning: restricted __be32 degrades to integer
include/net/ipv6.h:719:22: warning: invalid assignment: ^=
include/net/ipv6.h:719:22: left side has type restricted __be32
include/net/ipv6.h:719:22: right side has type unsigned intSigned-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
netdev_adjacent_add_links() and netdev_adjacent_del_links()
are static.queue->qdisc has __rcu annotation, need to use RCU_INIT_POINTER()
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
(struct flow_keys)->n_proto is in network order, use
proper type for this.Fixes following sparse errors :
net/core/flow_dissector.c:139:39: warning: incorrect type in assignment (different base types)
net/core/flow_dissector.c:139:39: expected unsigned short [unsigned] [usertype] n_proto
net/core/flow_dissector.c:139:39: got restricted __be16 [assigned] [usertype] proto
net/core/flow_dissector.c:237:23: warning: incorrect type in assignment (different base types)
net/core/flow_dissector.c:237:23: expected unsigned short [unsigned] [usertype] n_proto
net/core/flow_dissector.c:237:23: got restricted __be16 [assigned] [usertype] protoSigned-off-by: Eric Dumazet
Fixes: e0f31d849867 ("flow_keys: Record IP layer protocol in skb_flow_dissect()")
Signed-off-by: David S. Miller -
info is in network byte order, change it back to host byte order
before use. In particular, the current code sets the MTU of the tunnel
to a wrong (too big) value.Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Signed-off-by: Sabrina Dubroca
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller -
After d75b1ade567f ("net: less interrupt masking in NAPI")
driver's NAPI poll routine is expected to return
exact budget value if it wants to be re-called.Signed-off-by: Shahed Shaikh
Fixes: d75b1ade567f ("net: less interrupt masking in NAPI")
Signed-off-by: David S. Miller -
The RSS support requires enablement based on the features reported by
the hardware. The setting of this flag is missing. Add support to
set the RSS enablement flag based on the reported hardware features.Signed-off-by: Tom Lendacky
Signed-off-by: David S. Miller -
The number of traffic classes reported by the hardware is zero-based
so increment the value returned to get an actual count.Signed-off-by: Tom Lendacky
Signed-off-by: David S. Miller -
In tcf_exts_dump_stats(), ensure that exts->actions is not empty before
accessing the first element of that list and calling tcf_action_copy_stats()
on it. This fixes some random segvs when adding filters of type "basic" with
no particular action.This also fixes the dumping of those "no-action" filters, which more often
than not made calls to tcf_action_copy_stats() fail and consequently netlink
attributes added by the caller to be removed by a call to nla_nest_cancel().Fixes: 33be62715991 ("net_sched: act: use standard struct list_head")
Signed-off-by: Ignacy Gawędzki
Acked-by: Cong Wang
Signed-off-by: David S. Miller -
Configuring fq with quantum 0 hangs the system, presumably because of a
non-interruptible infinite loop. Either way quantum 0 does not make sense.Reproduce with:
sudo tc qdisc add dev lo root fq quantum 0 initial_quantum 0
ping 127.0.0.1Signed-off-by: Kenneth Klette Jonassen
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller -
The commit [8975626ea35a: drm/cirrus: allow 32bpp framebuffers for
cirrus drm] broke X modesetting driver because cirrus driver still
provides the full list of modes up to 1280x1024 while the 32bpp can
support only up to 800x600.We might be able to filter out the invalid modes in mode_valid
callback, but unfortunately the bpp in question can't be referred
there for now (let me know if there is a better way to retrieve the
bpp for the probed fb).So, instead, this patch adds the bpp module option to specify the
maximal bpp explicitly and limits the resolutions in get_modes
depending on its value.The default value is set to 24 so that the existing stuff keeps
working. If you need a new 32bpp feature, specify cirrus.bpp=32
option explicitly.Fixes: 8975626ea35a ('drm/cirrus: allow 32bpp framebuffers for cirrus drm')
Signed-off-by: Takashi Iwai
Signed-off-by: Dave Airlie -
Max unacked packets/bytes is an int while sizeof(long) was used in the
sysctl table.This means that when they were getting read we'd also leak kernel memory
to userspace along with the timeout values.Signed-off-by: Sasha Levin
Signed-off-by: David S. Miller -
In virtio 1.0 mode, when mergeable buffers are enabled on a big-endian
host, num_buffers wasn't byte-swapped correctly, so large incoming
packets got corrupted.To fix, fill it in within hdr - this also makes sure it gets
the correct type.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
This patch correct the bad expression while writing the
bit-pattern from software's buffer to hardware registers.Signed-off-by: Sanjeev Sharma
Signed-off-by: David S. Miller -
The commone register macors (e.g. RSR) is too commont to drivers, it may
be conflict with the architectures (e.g. xtensa, sh).The related warnings (with allmodconfig under xtensa):
CC [M] drivers/net/usb/sr9700.o
In file included from drivers/net/usb/sr9700.c:24:0:
drivers/net/usb/sr9700.h:65:0: warning: "RSR" redefined
#define RSR 0x06
^
In file included from ./arch/xtensa/include/asm/bitops.h:22:0,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/net/usb/sr9700.c:13:
./arch/xtensa/include/asm/processor.h:190:0: note: this is the location of the previous definition
#define RSR(v,sr) __asm__ __volatile__ ("rsr %0,"__stringify(sr) : "=a"(v));
^Signed-off-by: Chen Gang
Signed-off-by: David S. Miller -
Pull cifs fixes from Steve French:
"Three small cifs fixes. One fixes a hang under stress, and the other
two are security related"* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix MUST SecurityFlags filtering
Complete oplock break jobs before closing file handle
cifs: use memzero_explicit to clear stack buffer -
Pull ARM fixes from Russell King:
"A number of ARM fixes, the biggest is fixing a regression caused by
appended DT blobs exceeding 64K, causing the decompressor fixup code
to fail to patch the DT blob. Another important fix is for the ASID
allocator from Will Deacon which prevents some rare crashes seen on
some systems. Lastly, there's a build fix for v7M systems when printk
support is disabled.The last two remaining fixes are more cosmetic - the IOMMU one
prevents an annoying harmless warning message, and we disable the
kernel strict memory permissions on non-MMU which can't support it
anyway"* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8299/1: mm: ensure local active ASID is marked as allocated on rollover
ARM: 8298/1: ARM_KERNMEM_PERMS only works with MMU enabled
ARM: 8295/1: fix v7M build for !CONFIG_PRINTK
ARM: 8294/1: ATAG_DTB_COMPAT: remove the DT workspace's hardcoded 64KB size
ARM: 8288/1: dma-mapping: don't detach devices without an IOMMU during teardown
04 Feb, 2015
11 commits
-
Vladislav Yasevich says:
====================
Restore UFO support to virtio_net devicescommit 3d0ad09412ffe00c9afa201d01effdb6023d09b4
Author: Ben Hutchings
Date: Thu Oct 30 18:27:12 2014 +0000drivers/net: Disable UFO through virtio
Turned off UFO support to virtio-net based devices due to issues
with IPv6 fragment id generation for UFO packets. The issue
was that IPv6 UFO/GSO implementation expects the fragment id
to be supplied in skb_shinfo(). However, for packets generated
by the VMs, the fragment id is not supplied which causes all
IPv6 fragments to have the id of 0.The problem is that turning off UFO support on tap/macvtap
as well as virtio devices caused issues with migrations.
Migrations would fail when moving a vm from a kernel supporting
expecting UFO to work to the newer kernels that disabled UFO.This series provides a partial solution to address the migration
issue. The series allows us to track whether skb_shinfo()->ip6_frag_id
has been set by treating value of 0 as unset.
This lets GSO code to generate fragment ids if they are necessary
(ex: packet was generated by VM or packet socket).Since v3:
- Resolved build issue when IPv6 is a module.
- Removed trailing white space.Since v2:
- Rebase and rebuild to make sure everything works. No changes
to the patches were done.Since v1:
- Removed the skb bit and use value of 0 as tracker.
- Used Eric's suggestion to set fragment id as 0x80000000 if id
generation procedure yeilded a 0 result.
- Consolidated ipv6 id genration code.
====================Signed-off-by: David S. Miller
-
This reverts commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4.
Now that GSO functionality can correctly track if the fragment
id has been selected and select a fragment id if necessary,
we can re-enable UFO on tap/macvap and virtio devices.Signed-off-by: Vladislav Yasevich
Signed-off-by: David S. Miller -
This reverts commit 5188cd44c55db3e92cd9e77a40b5baa7ed4340f7.
Now that GSO layer can track if fragment id has been selected
and can allocate one if necessary, we don't need to do this in
tap and macvtap. This reverts most of the code and only keeps
the new ipv6 fragment id generation function that is still needed.Fixes: 3d0ad09412ff (drivers/net: Disable UFO through virtio)
Signed-off-by: Vladislav Yasevich
Signed-off-by: David S. Miller -
If the IPv6 fragment id has not been set and we perform
fragmentation due to UFO, select a new fragment id.
We now consider a fragment id of 0 as unset and if id selection
process returns 0 (after all the pertrubations), we set it to
0x80000000, thus giving us ample space not to create collisions
with the next packet we may have to fragment.When doing UFO integrity checking, we also select the
fragment id if it has not be set yet. This is stored into
the skb_shinfo() thus allowing UFO to function correclty.This patch also removes duplicate fragment id generation code
and moves ipv6_select_ident() into the header as it may be
used during GSO.Signed-off-by: Vladislav Yasevich
Signed-off-by: David S. Miller -
Pull infiniband reverts from Roland Dreier:
"Last minute InfiniBand/RDMA changes for 3.19:- Revert IPoIB driver back to 3.18 state. We had a number of fixes
go into 3.19, but they introduced regressions. We tried to get
everything fixed up but ran out of time, so we'll try again for
3.20.- Similarly, turn off the new "extended query port" verb. Late in
the cycle we realized the ABI is not quite right, and rather than
freeze something in a rush and make a mistake, we'll take a bit
more time and get it right in 3.20"* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/core: Temporarily disable ex_query_device uverb
Revert "IPoIB: Consolidate rtnl_lock tasks in workqueue"
Revert "IPoIB: Make the carrier_on_task race aware"
Revert "IPoIB: fix MCAST_FLAG_BUSY usage"
Revert "IPoIB: fix mcast_dev_flush/mcast_restart_task race"
Revert "IPoIB: change init sequence ordering"
Revert "IPoIB: Use dedicated workqueues per interface"
Revert "IPoIB: Make ipoib_mcast_stop_thread flush the workqueue"
Revert "IPoIB: No longer use flush as a parameter" -
Pull two fixes for md from Neil Brown:
- Another live lock, needs backporting
- work-around false positive with new warnings.
* tag 'md/3.19-fixes' of git://neil.brown.name/md:
md/bitmap: fix a might_sleep() warning.
md/raid5: fix another livelock caused by non-aligned writes. -
Some AMD CS553x devices have read-only BARs because of a firmware or
hardware defect. There's a workaround in quirk_cs5536_vsa(), but it no
longer works after 36e8164882ca ("PCI: Restore detection of read-only
BARs"). Prior to 36e8164882ca, we filled in res->start; afterwards we
leave it zeroed out. The quirk only updated the size, so the driver tried
to use a region starting at zero, which didn't work.Expand quirk_cs5536_vsa() to read the base addresses from the BARs and
hard-code the sizes.On Nix's system BAR 2's read-only value is 0x6200. Prior to 36e8164882ca,
we interpret that as a 512-byte BAR based on the lowest-order bit set. Per
datasheet sec 5.6.1, that BAR (MFGPT) requires only 64 bytes; use that to
avoid clearing any address bits if a platform uses only 64-byte alignment.[bhelgaas: changelog, reduce BAR 2 size to 64]
Fixes: 36e8164882ca ("PCI: Restore detection of read-only BARs")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=85991#c4
Link: http://support.amd.com/TechDocs/31506_cs5535_databook.pdf
Link: http://support.amd.com/TechDocs/33238G_cs5536_db.pdf
Reported-and-tested-by: Nix
Signed-off-by: Myron Stowe
Signed-off-by: Bjorn Helgaas
CC: stable@vger.kernel.org # v.2.6.27+ -
Pull final block layer fixes from Jens Axboe:
"Unfortunately the hctx/ctx lifetime fix from last pull had some
issues. This pull request contains a revert of the problematic
commit, and a proper rewrite of it.The rewrite has been tested by the users complaining about the
regression, and it works fine now. Additionally, I've run testing on
all the blk-mq use cases for it and it passes. So we should
definitely get this into 3.19, to avoid regression for some cases"* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: release mq's kobjects in blk_release_queue()
Revert "blk-mq: fix hctx/ctx kobject use-after-free" -
Pull gpio fixes from Linus Walleij:
"Yet more GPIO fixes for the v3.19 series.There is a high bug-spot activity in GPIO this merge window, much due
to Johan Hovolds spearheading into actually exercising the removal
path for GPIO chips, something that was never really exercised before.The other two fixes are augmenting erroneous behaviours in two
specific drivers for minor systems.Summary from signed tag:
- Two fixes stabilizing that which was never stable before: removal
of GPIO chips, now let's stop leaking memory.
- Make sure OMAP IRQs are usable when the irqchip API is used
orthogonally to the gpiochip API.
- Provide a default GPIO base for the mcp23s08 driver"* tag 'gpio-v3.19-5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: sysfs: fix memory leak in gpiod_sysfs_set_active_low
gpio: sysfs: fix memory leak in gpiod_export_link
gpio: mcp23s08: handle default gpio base
gpio: omap: Fix bad device access with setup_irq() -
Commit 5a77abf9a97a ("IB/core: Add support for extended query device caps")
added a new extended verb to query the capabilities of RDMA devices, but the
semantics of this verb are still under debate [1].Don't expose this verb to userspace until the ABI is nailed down.
[1] [PATCH v1 0/5] IB/core: extended query device caps cleanup for v3.19
http://www.spinics.net/lists/linux-rdma/msg22904.htmlSigned-off-by: Haggai Eran
Reviewed-by: Yann Droneaud
Signed-off-by: Roland Dreier
03 Feb, 2015
2 commits
-
Revert commit 6c17ee44d524 (ACPI / LPSS: introduce a 'proxy' device
to power on LPSS for DMA), as it introduced registration and probe
ordering problems between devices on the LPSS that may lead to full
hard system hang on boot in some cases. -
Commit e1a5848e3398 ("ARM: 7924/1: mm: don't bother with reserved ttbr0
when running with LPAE") removed the use of the reserved TTBR0 value
for LPAE systems, since the ASID is held in the TTBR and can be updated
atomicly with the pgd of the next mm.Unfortunately, this patch forgot to update flush_context, which
deliberately avoids marking the local active ASID as allocated, since we
used to switch via ASID zero and didn't need to allocate the ASID of
the previous mm. The side-effect of this is that we can allocate the
same ASID to the next mm and, between flushing the local TLB and updating
TTBR0, we can perform speculative TLB fills for userspace nG mappings
using the page table of the previous mm.The consequence of this is that the next mm can erroneously hit some
mappings of the previous mm. Note that this was made significantly
harder to hit by a391263cd84e ("ARM: 8203/1: mm: try to re-use old ASID
assignments following a rollover") but is still theoretically possible.This patch fixes the problem by removing the code from flush_context
that forces the allocated ASID to zero for the local CPU. Many thanks
to the Broadcom guys for tracking this one down.Fixes: e1a5848e3398 ("ARM: 7924/1: mm: don't bother with reserved ttbr0 when running with LPAE")
Cc: # v3.14+
Reported-by: Raymond Ngun
Tested-by: Raymond Ngun
Reviewed-by: Gregory Fong
Signed-off-by: Will Deacon
Signed-off-by: Russell King
