Pull perf fix from Thomas Gleixner:
"The last fix for perf for this cycles:
- Prevent a segfault when kernel.kptr_restrict=2 is set by avoiding a
null pointer dereference"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf machine: Fix segfault for kernel.kptr_restrict=2
appears not to have been properly fixed, so the offending commit will be
reverted and we will find the proper fix for v4.13. Hopefully.
-----BEGIN PGP SIGNATURE-----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=JIJ5
-----END PGP SIGNATURE-----
Merge tag 'pinctrl-v4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pinctrl fix from Linus Walleij:
"Brian noticed that this regression has not got a proper fix for the
entire merge window and consequently we need to revert the offending
commit.
It's part of the RT-mainstream work, the dance goes like this, two
steps forward, one step back.
Summary:
- A last fix for v4.12, an IRQ problem reported early in the merge
window appears not to have been properly fixed, so the offending
commit will be reverted and we will find the proper fix for v4.13.
Hopefully"
* tag 'pinctrl-v4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
Revert "pinctrl: rockchip: avoid hardirq-unsafe functions in irq_chip"
- Fix another ACPI problem with broken BIOSes.
- Filter out the GPIO right events, making a very user-visible bug
go away.
-----BEGIN PGP SIGNATURE-----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=hdkl
-----END PGP SIGNATURE-----
Merge tag 'gpio-v4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull last minute fixes for GPIO from Linus Walleij:
- Fix another ACPI problem with broken BIOSes.
- Filter out the right GPIO events, making a very user-visible bug go
away.
* tag 'gpio-v4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: acpi: Skip _AEI entries without a handler rather then aborting the scan
gpiolib: fix filtering out unwanted events
One is for a crash when using the :mod: trace probe command into
stack_trace_filter. This bug was introduced during the last merge
window.
The other was there forever. It's a small bug that makes it impossible
to name a module function for kprobes when the module starts with a digit.
-----BEGIN PGP SIGNATURE-----
iQExBAABCAAbBQJZVsqbFBxyb3N0ZWR0QGdvb2RtaXMub3JnAAoJEMm5BfJq2Y3L
AsoH+wWK8tsDqI6MBTXO+v5RwLUu/zHClcMEcJGKLFsHRZ8HOJ9Afg+c1LbTujRR
Ck20l+U/DibVO1AnjJ9elJDj7/3ajTUfCrTVCKf5B9XbdzAD2qZle3byynhZvm2Q
CwVbzMvRYd5jZzEiO95YKOhH6iIDfXOZM7vQzz0F/bDZn9uAxiFumwdiSNA+f2wP
6Ykeuth/IZh0xdbaTqsH1XvhweUSpIIjhOZH/V/uAg+LuRffh4sOBR/wjYUMuegX
tgpGfJu8VVsa+GIBcThdCkjy1k48GLBsZ6j/47Lhc5r3GNIVR7D7mb9x3zTn1U30
WTeDu+betctH7b03hiH88kKoEfg=
=RXOC
-----END PGP SIGNATURE-----
Merge tag 'trace-v4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull last-minute tracing fixes from Steven Rostedt:
"Two fixes:
One is for a crash when using the :mod: trace probe command into
stack_trace_filter. This bug was introduced during the last merge
window.
The other was there forever. It's a small bug that makes it impossible
to name a module function for kprobes when the module starts with a
digit"
* tag 'trace-v4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/kprobes: Allow to create probe with a module name starting with a digit
ftrace: Fix regression with module command in stack_trace_filter
uapi/linux/a.out.h uses a number of predefined macros that are
deprecated because they're in the application namespace
(e.g. '#ifdef linux' instead of '#ifdef __linux__').
This patch either corrects or just removes them if they are not
applicable to Linux.
The primary reason this is worth bothering to fix, considering how
obsolete a.out binary support is, is that the GCC build process
considers this such a severe error that it will copy the header into a
private directory and change the macro names, which causes future
updates to the header to be masked. This header probably doesn't get
updated very often anymore, but it is the _only_ uapi header that gets
this treatment, so IMHO it is worth patching just to drive that number
all the way to zero.
Signed-off-by: Zack Weinberg <zackw@panix.com>
[hch: removed dead conditionals]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
"in a rcu enabled hashtable" is repeated twice in a comment.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Two fixes for code we merged this cycle:
- cxl: Fixes for Coherent Accelerator Interface Architecture 2.0
- Avoid miscompilation w/GCC 4.6.3 on 32-bit - don't inline copy_to/from_user()
Thanks to:
Al Viro, Larry Finger, Christophe Lombard.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=Yq9i
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.12-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Hopefully the last two powerpc fixes for 4.12.
The CXL one is larger than I'd usually send at rc7, but it fixes new
code this cycle, so better to have it working for the release. It was
actually sent a few weeks back but got blocked in testing behind
another fix that was causing issues.
We are still tracking one crash in v4.12-rc7, but only one person has
reproduced it and the commit identified by bisect doesn't touch any of
the relevant code, so I think it's 50/50 whether that commit is
actually the problem or it's some code layout / toolchain issue.
Two fixes for code we merged this cycle:
- cxl: Fixes for Coherent Accelerator Interface Architecture 2.0
- Avoid miscompilation w/GCC 4.6.3 on 32-bit - don't inline
copy_to/from_user()
Thanks to Al Viro, Larry Finger, Christophe Lombard"
* tag 'powerpc-4.12-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/32: Avoid miscompilation w/GCC 4.6.3 - don't inline copy_to/from_user()
cxl: Fixes for Coherent Accelerator Interface Architecture 2.0
Two fixes:
* A fix for AMD IOMMU interrupt remapping code when
IRQs are forwarded directly to KVM guests
* Fixed check in the recently merged code to allow
tboot with Intel VT-d disabled
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=bw0V
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v4.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Two fixes:
- A fix for AMD IOMMU interrupt remapping code when IRQs are
forwarded directly to KVM guests
- Fixed check in the recently merged code to allow tboot with
Intel VT-d disabled"
* tag 'iommu-fixes-v4.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/amd: Fix interrupt remapping when disable guest_mode
iommu/vt-d: Correctly disable Intel IOMMU force on
Two last-minute HD-audio fixes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=fws/
-----END PGP SIGNATURE-----
Merge tag 'sound-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Two last-minute HD-audio fixes"
* tag 'sound-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix endless loop of codec configure
ALSA: hda - set input_path bitmap to zero after moving it to new place
Pull overlayfs fixes from Miklos Szeredi:
"Fix two bugs in copy-up code. One introduced in 4.11 and one in
4.12-rc"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: don't set origin on broken lower hardlink
ovl: copy-up: don't unlock between lookup and link
Always try to parse an address, since kstrtoul() will safely fail when
given a symbol as input. If that fails (which will be the case for a
symbol), try to parse a symbol instead.
This allows creating a probe such as:
p:probe/vlan_gro_receive 8021q:vlan_gro_receive+0
Which is necessary for this command to work:
perf probe -m 8021q -a vlan_gro_receive
Link: http://lkml.kernel.org/r/fd72d666f45b114e2c5b9cf7e27b91de1ec966f1.1498122881.git.sd@queasysnail.net
Cc: stable@vger.kernel.org
Fixes: 413d37d1e ("tracing: Add kprobe-based event tracer")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Pull networking fixes from David Miller:
1) Need to access netdev->num_rx_queues behind an accessor in netvsc
driver otherwise the build breaks with some configs, from Arnd
Bergmann.
2) Add dummy xfrm_dev_event() so that build doesn't fail when
CONFIG_XFRM_OFFLOAD is not set. From Hangbin Liu.
3) Don't OOPS when pfkey_msg2xfrm_state() signals an erros, from Dan
Carpenter.
4) Fix MCDI command size for filter operations in sfc driver, from
Martin Habets.
5) Fix UFO segmenting so that we don't calculate incorrect checksums,
from Michal Kubecek.
6) When ipv6 datagram connects fail, reset destination address and
port. From Wei Wang.
7) TCP disconnect must reset the cached receive DST, from WANG Cong.
8) Fix sign extension bug on 32-bit in dev_get_stats(), from Eric
Dumazet.
9) fman driver has to depend on HAS_DMA, from Madalin Bucur.
10) Fix bpf pointer leak with xadd in verifier, from Daniel Borkmann.
11) Fix negative page counts with GFO, from Michal Kubecek.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
sfc: fix attempt to translate invalid filter ID
net: handle NAPI_GRO_FREE_STOLEN_HEAD case also in napi_frags_finish()
bpf: prevent leaking pointer via xadd on unpriviledged
arcnet: com20020-pci: add missing pdev setup in netdev structure
arcnet: com20020-pci: fix dev_id calculation
arcnet: com20020: remove needless base_addr assignment
Trivial fix to spelling mistake in arc_printk message
arcnet: change irq handler to lock irqsave
rocker: move dereference before free
mlxsw: spectrum_router: Fix NULL pointer dereference
net: sched: Fix one possible panic when no destroy callback
virtio-net: serialize tx routine during reset
net: usb: asix88179_178a: Add support for the Belkin B2B128
fsl/fman: add dependency on HAS_DMA
net: prevent sign extension in dev_get_stats()
tcp: reset sk_rx_dst in tcp_disconnect()
net: ipv6: reset daddr and dport in sk if connect() fails
bnx2x: Don't log mc removal needlessly
bnxt_en: Fix netpoll handling.
bnxt_en: Add missing logic to handle TPA end error conditions.
...
races with discard passdown to the underlying data device.
- A dm raid fix to not access the superblock's >= 1.9.0 'sectors' member
unconditionally.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJZVV3cAAoJEMUj8QotnQNaowQIALi4gHBXASsRpox5/zuYi0Wq
iGzLT0bVdZ5BnNZYC11pINwd8aSsCecVJGoCfA1l7ohqFrWBZ1ivmSgmT0M+yyao
/uX/eH22HdT5maiCmeAdcfYeYj5z+9CkLObB9rlsDZ5bqEbHEntXSH5tn3lN906K
dVc3BU5MCve/ZjtUIvbZ+iMOejigtFj9U1l5KcNi49MNT/OGk7oaYDwbqvAIIxBE
M41BXuwdX4FBw4qa3cE2AUWWFcyaJoqH/AU3SDu1wsfLNiXd3HouVZg0pWI8mOO5
DHkLSZBP5eaWpyL2eZScv1f/DuF8r9Ph4SE0C0ZpLkNbAG0ULyLwFFF8CziyYbw=
=HwfU
-----END PGP SIGNATURE-----
Merge tag 'for-4.12/dm-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- dm thinp fix for crash that will occur when metadata device failure
races with discard passdown to the underlying data device.
- dm raid fix to not access the superblock's >= 1.9.0 'sectors' member
unconditionally.
* tag 'for-4.12/dm-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm thin: do not queue freed thin mapping for next stage processing
dm raid: fix oops on upgrading to extended superblock format
Pull block fixes from Jens Axboe:
"Two fixes that should go into this release.
One is an nvme regression fix from Keith, fixing a missing queue
freeze if the controller is being reset. This causes the reset to
hang.
The other is a fix for a leak of the bio protection info, if smaller
sized O_DIRECT is used. This fix should be more involved as we have
other problematic paths in the kernel, but given as this isn't a
regression in this series, we'll tackle those for 4.13"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: provide bio_uninit() free freeing integrity/task associations
nvme/pci: Fix stuck nvme reset
When filter insertion fails with no rollback, we were trying to convert
EFX_EF10_FILTER_ID_INVALID to an id to store in 'ids' (which is either
vlan->uc or vlan->mc). This would WARN_ON_ONCE and then record a bogus
filter ID of 0x1fff, neither of which is a good thing.
Fixes: 0ccb998bf4 ("sfc: fix filter_id misinterpretation in edge case")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recently I started seeing warnings about pages with refcount -1. The
problem was traced to packets being reused after their head was merged into
a GRO packet by skb_gro_receive(). While bisecting the issue pointed to
commit c21b48cc1b ("net: adjust skb->truesize in ___pskb_trim()") and
I have never seen it on a kernel with it reverted, I believe the real
problem appeared earlier when the option to merge head frag in GRO was
implemented.
Handling NAPI_GRO_FREE_STOLEN_HEAD state was only added to GRO_MERGED_FREE
branch of napi_skb_finish() so that if the driver uses napi_gro_frags()
and head is merged (which in my case happens after the skb_condense()
call added by the commit mentioned above), the skb is reused including the
head that has been merged. As a result, we release the page reference
twice and eventually end up with negative page refcount.
To fix the problem, handle NAPI_GRO_FREE_STOLEN_HEAD in napi_frags_finish()
the same way it's done in napi_skb_finish().
Fixes: d7e8883cfc ("net: make GRO aware of skb->head_frag")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Leaking kernel addresses on unpriviledged is generally disallowed,
for example, verifier rejects the following:
0: (b7) r0 = 0
1: (18) r2 = 0xffff897e82304400
3: (7b) *(u64 *)(r1 +48) = r2
R2 leaks addr into ctx
Doing pointer arithmetic on them is also forbidden, so that they
don't turn into unknown value and then get leaked out. However,
there's xadd as a special case, where we don't check the src reg
for being a pointer register, e.g. the following will pass:
0: (b7) r0 = 0
1: (7b) *(u64 *)(r1 +48) = r0
2: (18) r2 = 0xffff897e82304400 ; map
4: (db) lock *(u64 *)(r1 +48) += r2
5: (95) exit
We could store the pointer into skb->cb, loose the type context,
and then read it out from there again to leak it eventually out
of a map value. Or more easily in a different variant, too:
0: (bf) r6 = r1
1: (7a) *(u64 *)(r10 -8) = 0
2: (bf) r2 = r10
3: (07) r2 += -8
4: (18) r1 = 0x0
6: (85) call bpf_map_lookup_elem#1
7: (15) if r0 == 0x0 goto pc+3
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R6=ctx R10=fp
8: (b7) r3 = 0
9: (7b) *(u64 *)(r0 +0) = r3
10: (db) lock *(u64 *)(r0 +0) += r6
11: (b7) r0 = 0
12: (95) exit
from 7 to 11: R0=inv,min_value=0,max_value=0 R6=ctx R10=fp
11: (b7) r0 = 0
12: (95) exit
Prevent this by checking xadd src reg for pointer types. Also
add a couple of test cases related to this.
Fixes: 1be7f75d16 ("bpf: enable non-root eBPF programs")
Fixes: 17a5267067 ("bpf: verifier (add verifier core)")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Grzeschik says:
====================
arcnet: Collection of latest fixes
Here we sum up the recent fixes I collected on the way to use and
stabilise the framework. Part of it is an possible deadlock that we
prevent as well to fix the calculation of the dev_id that can be setup
by an rotary encoder. Beside that we added an trivial spelling patch and
fix some wrong and missing assignments that improves the code footprint.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We add the pdev data to the pci devices netdev structure. This way
the interface get consistent device names in the userspace (udev).
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The dev_id was miscalculated. Only the two bits 4-5 are relevant for the
MA1 card. PCIARC1 and PCIFB2 use the four bits 4-7 for id selection.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
My static checker complains that ofdpa_neigh_del() can sometimes free
"found". It just makes sense to use it first before deleting it.
Fixes: ecf244f753 ("rocker: fix maybe-uninitialized warning")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case a VLAN device is enslaved to a bridge we shouldn't create a
router interface (RIF) for it when it's configured with an IP address.
This is already handled by the driver for other types of netdevs, such
as physical ports and LAG devices.
If this IP address is then removed and the interface is subsequently
unlinked from the bridge, a NULL pointer dereference can happen, as the
original 802.1d FID was replaced with an rFID which was then deleted.
To reproduce:
$ ip link set dev enp3s0np9 up
$ ip link add name enp3s0np9.111 link enp3s0np9 type vlan id 111
$ ip link set dev enp3s0np9.111 up
$ ip link add name br0 type bridge
$ ip link set dev br0 up
$ ip link set enp3s0np9.111 master br0
$ ip address add dev enp3s0np9.111 192.168.0.1/24
$ ip address del dev enp3s0np9.111 192.168.0.1/24
$ ip link set dev enp3s0np9.111 nomaster
Fixes: 99724c18fc ("mlxsw: spectrum: Introduce support for router interfaces")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Petr Machata <petrm@mellanox.com>
Tested-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When qdisc fail to init, qdisc_create would invoke the destroy callback
to cleanup. But there is no check if the callback exists really. So it
would cause the panic if there is no real destroy callback like the qdisc
codel, fq, and so on.
Take codel as an example following:
When a malicious user constructs one invalid netlink msg, it would cause
codel_init->codel_change->nla_parse_nested failed.
Then kernel would invoke the destroy callback directly but qdisc codel
doesn't define one. It causes one panic as a result.
Now add one the check for destroy to avoid the possible panic.
Fixes: 87b60cfacf ("net_sched: fix error recovery at qdisc creation")
Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't hold any tx lock when trying to disable TX during reset, this
would lead a use after free since ndo_start_xmit() tries to access
the virtqueue which has already been freed. Fix this by using
netif_tx_disable() before freeing the vqs, this could make sure no tx
after vq freeing.
Reported-by: Jean-Philippe Menil <jpmenil@gmail.com>
Tested-by: Jean-Philippe Menil <jpmenil@gmail.com>
Fixes commit f600b69050 ("virtio_net: Add XDP support")
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Robert McCabe <robert.mccabe@rockwellcollins.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When doing the following command:
# echo ":mod:kvm_intel" > /sys/kernel/tracing/stack_trace_filter
it triggered a crash.
This happened with the clean up of probes. It required all callers to the
regex function (doing ftrace filtering) to have ops->private be a pointer to
a trace_array. But for the stack tracer, that is not the case.
Allow for the ops->private to be NULL, and change the function command
callbacks to handle the trace_array pointer being NULL as well.
Fixes: d2afd57a4b ("tracing/ftrace: Allow instances to have their own function probes")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
acpi_walk_resources will stop as soon as the callback passed in returns
an error status. On a x86 tablet I have the first GpioInt in the _AEI
resource list has no handler defined in the DSDT, causing
acpi_walk_resources to abort scanning the rest of the resource list,
which does define valid ACPI GPIO events.
This commit changes the return for not finding a handler from
AE_BAD_PARAMETER to AE_OK so that the rest of the resource list will
get scanned normally in case of missing event handlers.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
GPIOEVENT_REQUEST_BOTH_EDGES is not a single flag, but a binary OR of
GPIOEVENT_REQUEST_RISING_EDGE and GPIOEVENT_REQUEST_FALLING_EDGE.
The expression 'le->eflags & GPIOEVENT_REQUEST_BOTH_EDGES' we'll get
evaluated to true even if only one event type was requested.
Fix it by checking both RISING & FALLING flags explicitly.
Cc: stable@vger.kernel.org
Fixes: 61f922db72 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The only user of thread_saved_pc() in non-arch-specific code was removed
in commit 8243d55977 ("sched/core: Remove pointless printout in
sched_show_task()"). Remove the implementations as well.
Some architectures use thread_saved_pc() in their arch-specific code.
Leave their thread_saved_pc() intact.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wen reports significant memory leaks with DIF and O_DIRECT:
"With nvme devive + T10 enabled, On a system it has 256GB and started
logging /proc/meminfo & /proc/slabinfo for every minute and in an hour
it increased by 15968128 kB or ~15+GB.. Approximately 256 MB / minute
leaking.
/proc/meminfo | grep SUnreclaim...
SUnreclaim: 6752128 kB
SUnreclaim: 6874880 kB
SUnreclaim: 7238080 kB
....
SUnreclaim: 22307264 kB
SUnreclaim: 22485888 kB
SUnreclaim: 22720256 kB
When testcases with T10 enabled call into __blkdev_direct_IO_simple,
code doesn't free memory allocated by bio_integrity_alloc. The patch
fixes the issue. HTX has been run with +60 hours without failure."
Since __blkdev_direct_IO_simple() allocates the bio on the stack, it
doesn't go through the regular bio free. This means that any ancillary
data allocated with the bio through the stack is not freed. Hence, we
can leak the integrity data associated with the bio, if the device is
using DIF/DIX.
Fix this by providing a bio_uninit() and export it, so that we can use
it to free this data. Note that this is a minimal fix for this issue.
Any current user of bio's that are allocated outside of
bio_alloc_bioset() suffers from this issue, most notably some drivers.
We will fix those in a more comprehensive patch for 4.13. This also
means that the commit marked as being fixed by this isn't the real
culprit, it's just the most obvious one out there.
Fixes: 542ff7bf18 ("block: new direct I/O implementation")
Reported-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Bugfixes include:
- Stable fix for exclusive create if the server supports the umask attribute
- Trunking detection should handle ERESTARTSYS/EINTR
- Stable fix for a race in the LAYOUTGET function
- Stable fix to revert "nfs_rename() handle -ERESTARTSYS dentry left behind"
- nfs4_callback_free_slot() cannot call nfs4_slot_tbl_drain_complete()
-----BEGIN PGP SIGNATURE-----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=w19C
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-4.12-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Bugfixes include:
- stable fix for exclusive create if the server supports the umask
attribute
- trunking detection should handle ERESTARTSYS/EINTR
- stable fix for a race in the LAYOUTGET function
- stable fix to revert "nfs_rename() handle -ERESTARTSYS dentry left
behind"
- nfs4_callback_free_slot() cannot call nfs4_slot_tbl_drain_complete()"
* tag 'nfs-for-4.12-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4.1: nfs4_callback_free_slot() cannot call nfs4_slot_tbl_drain_complete()
Revert "NFS: nfs_rename() handle -ERESTARTSYS dentry left behind"
NFSv4.1: Fix a race in nfs4_proc_layoutget
NFS: Trunking detection should handle ERESTARTSYS/EINTR
NFSv4.2: Don't send mode again in post-EXCLUSIVE4_1 SETATTR with umask
Pull drm fixes from Dave Airlie:
"This is the final set of fixes for -rc8, just a few i915 and one
vmwgfx ones.
I'm off on holidays for a week, so if anything shows up for fixes I've
asked Daniel or Sean Paul to herd it in the right direction"
[ The additional etnaviv fixes were already herded towards me as seen in
my previous pull - Linus ]
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/vmwgfx: Free hash table allocated by cmdbuf managed res mgr
drm/i915: Disable EXEC_OBJECT_ASYNC when doing relocations
drm/i915: Hold struct_mutex for per-file stats in debugfs/i915_gem_object
drm/i915: Retire the VMA's fence tracker before unbinding
Pull drm/etnaviv fixes from Lucas Stach:
"I realized I just missed the cut-off point for the final drm fixes
pull, but I have 2 more etnaviv fixes that need to go into 4.12, as
they fix fallout from the explicit sync work introduced in the last
merge window"
[ Pulling directly because Dave is on vacation. Noted by Daniel Vetter,
and acked by Dave Airlie - Linus ]
* 'etnaviv/fixes' of git://git.pengutronix.de/git/lst/linux:
drm/etnaviv: Fix implicit/explicit sync sense inversion
drm/etnaviv: fix submit flags getting overwritten by BO content
Pass-through devices to VM guest can get updated IRQ affinity
information via irq_set_affinity() when not running in guest mode.
Currently, AMD IOMMU driver in GA mode ignores the updated information
if the pass-through device is setup to use vAPIC regardless of guest_mode.
This could cause invalid interrupt remapping.
Also, the guest_mode bit should be set and cleared only when
SVM updates posted-interrupt interrupt remapping information.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Joerg Roedel <jroedel@suse.de>
Fixes: d98de49a53 ('iommu/amd: Enable vAPIC interrupt remapping mode by default')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
When copying up a file that has multiple hard links we need to break any
association with the origin file. This makes copy-up be essentially an
atomic replace.
The new file has nothing to do with the old one (except having the same
data and metadata initially), so don't set the overlay.origin attribute.
We can relax this in the future when we are able to index upper object by
origin.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 3a1e819b4e ("ovl: store file handle of lower inode on copy up")
Nothing prevents mischief on upper layer while we are busy copying up the
data.
Move the lookup right before the looked up dentry is actually used.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 01ad3eb8a0 ("ovl: concurrent copy up of regular files")
Cc: <stable@vger.kernel.org> # v4.11
azx_codec_configure() loops over the codecs found on the given
controller via a linked list. The code used to work in the past, but
in the current version, this may lead to an endless loop when a codec
binding returns an error.
The culprit is that the snd_hda_codec_configure() unregisters the
device upon error, and this eventually deletes the given codec object
from the bus. Since the list is initialized via list_del_init(), the
next object points to the same device itself. This behavior change
was introduced at splitting the HD-audio code code, and forgotten to
adapt it here.
For fixing this bug, just use a *_safe() version of list iteration.
Fixes: d068ebc25e ("ALSA: hda - Move some codes up to hdac_bus struct")
Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
We were reading the no-implicit sync flag the wrong way around,
synchronizing too much for the explicit case, and not at all for the
implicit case. Oops.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
The addition of the flags member to etnaviv_gem_submit structure didn't
take into account that the last member of this structure is a variable
length array.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Just a few minor fixes. Important one is the execbuf async fix (aka
ANDROID_native_sync). There was another patch for a display coherency
corner case on APL, but we've random-walked in that space too much,
and the cherry-pick looked really invasive.
* tag 'drm-intel-fixes-2017-06-27' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915: Disable EXEC_OBJECT_ASYNC when doing relocations
drm/i915: Hold struct_mutex for per-file stats in debugfs/i915_gem_object
drm/i915: Retire the VMA's fence tracker before unbinding
Single vmwgfx fix
* 'vmwgfx-fixes-4.12' of git://people.freedesktop.org/~thomash/linux:
drm/vmwgfx: Free hash table allocated by cmdbuf managed res mgr
Recently we met a problem, the codec has valid adcs and input pins,
and they can form valid input paths, but the driver does not build
valid controls for them like "Mic boost", "Capture Volume" and
"Capture Switch".
Through debugging, I found the driver needs to shrink the invalid
adcs and input paths for this machine, so it will move the whole
column bitmap value to the previous column, after moving it, the
driver forgets to set the original column bitmap value to zero, as a
result, the driver will invalidate the path whose index value is the
original colume bitmap value. After executing this function, all
valid input paths are invalidated by a mistake, there are no any
valid input paths, so the driver won't build controls for them.
Fixes: 3a65bcdc57 ("ALSA: hda - Fix inconsistent input_paths after ADC reduction")
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The current code works only for the case where we have exactly one slot,
which is no longer true.
nfs4_free_slot() will automatically declare the callback channel to be
drained when all slots have been returned.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This reverts commit 920b4530fb which could
call d_move() without holding the directory's i_mutex, and reverts commit
d4ea7e3c5c "NFS: Fix old dentry rehash after
move", which was a follow-up fix.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Fixes: 920b4530fb ("NFS: nfs_rename() handle -ERESTARTSYS dentry left behind")
Cc: stable@vger.kernel.org # v4.10+
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If the task calling layoutget is signalled, then it is possible for the
calls to nfs4_sequence_free_slot() and nfs4_layoutget_prepare() to race,
in which case we leak a slot.
The fix is to move the call to nfs4_sequence_free_slot() into the
nfs4_layoutget_release() so that it gets called at task teardown time.
Fixes: 2e80dbe7ac ("NFSv4.1: Close callback races for OPEN, LAYOUTGET...")
Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
The controller state is set to resetting prior to disabling the
controller, so this patch accounts for that state when deciding if it
needs to freeze the queues. Without this, an 'nvme reset /dev/nvme0'
blocks forever because the queues were never frozen.
Fixes: 82b057caef ("nvme-pci: fix multiple ctrl removal scheduling")
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
