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Fix a typo in gue.h
Signed-off-by: Aiden Leong <aiden.leong@aibsd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the representor is removed, then identify the indirect flow_blocks
that need to be removed by the release callback and the port representor
structure. To identify the port representor structure, a new
indr.cb_priv field needs to be introduced. The flow_block also needs to
be removed from the driver list from the cleanup path.
Fixes: 1fac52da5942 ("net: flow_offload: consolidate indirect flow_block infrastructure")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Prepare fix the bug in the next patch. use flow_indr_block_cb_alloc/remove
function and remove the __flow_block_indr_binding.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add flow_indr_block_cb_alloc/remove function for next fix patch.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Performance drop fix and other fixes
Here are three fixes for rxrpc:
(1) Fix a trace symbol mapping. It doesn't seem to let you map to "".
(2) Fix the handling of the remote receive window size when it increases
beyond the size we can support for our transmit window.
(3) Fix a performance drop caused by retransmitted packets being
accidentally marked as already ACK'd.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The trace symbol printer (__print_symbolic()) ignores symbols that map to
an empty string and prints the hex value instead.
Fix the symbol for rxrpc_cong_no_change to " -" instead of "" to avoid
this.
Fixes: b54a134a7de4 ("rxrpc: Fix handling of enums-to-string translation in tracing")
Signed-off-by: David Howells <dhowells@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2020-06-19
1) Fix double ESP trailer insertion in IPsec crypto offload if
netif_xmit_frozen_or_stopped is true. From Huy Nguyen.
2) Merge fixup for "remove output_finish indirection from
xfrm_state_afinfo". From Stephen Rothwell.
3) Select CRYPTO_SEQIV for ESP as this is needed for GCM and several
other encryption algorithms. Also modernize the crypto algorithm
selections for ESP and AH, remove those that are maked as "MUST NOT"
and add those that are marked as "MUST" be implemented in RFC 8221.
From Eric Biggers.
Please note the merge conflict between commit:
a7f7f6248d97 ("treewide: replace '---help---' in Kconfig files with 'help'")
from Linus' tree and commits:
7d4e39195925 ("esp, ah: consolidate the crypto algorithm selections")
be01369859b8 ("esp, ah: modernize the crypto algorithm selections")
from the ipsec tree.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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During IPsec performance testing, we see bad ICMP checksum. The error packet
has duplicated ESP trailer due to double validate_xmit_xfrm calls. The first call
is from ip_output, but the packet cannot be sent because
netif_xmit_frozen_or_stopped is true and the packet gets dev_requeue_skb. The second
call is from NET_TX softirq. However after the first call, the packet already
has the ESP trailer.
Fix by marking the skb with XFRM_XMIT bit after the packet is handled by
validate_xmit_xfrm to avoid duplicate ESP trailer insertion.
Fixes: f6e27114a60a ("net: Add a xfrm validate function to validate_xmit_skb")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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In the current code, ->ndo_start_xmit() can be executed recursively only
10 times because of stack memory.
But, in the case of the vxlan, 10 recursion limit value results in
a stack overflow.
In the current code, the nested interface is limited by 8 depth.
There is no critical reason that the recursion limitation value should
be 10.
So, it would be good to be the same value with the limitation value of
nesting interface depth.
Test commands:
ip link add vxlan10 type vxlan vni 10 dstport 4789 srcport 4789 4789
ip link set vxlan10 up
ip a a 192.168.10.1/24 dev vxlan10
ip n a 192.168.10.2 dev vxlan10 lladdr fc:22:33:44:55:66 nud permanent
for i in {9..0}
do
let A=$i+1
ip link add vxlan$i type vxlan vni $i dstport 4789 srcport 4789 4789
ip link set vxlan$i up
ip a a 192.168.$i.1/24 dev vxlan$i
ip n a 192.168.$i.2 dev vxlan$i lladdr fc:22:33:44:55:66 nud permanent
bridge fdb add fc:22:33:44:55:66 dev vxlan$A dst 192.168.$i.2 self
done
hping3 192.168.10.2 -2 -d 60000
Splat looks like:
[ 103.814237][ T1127] =============================================================================
[ 103.871955][ T1127] BUG kmalloc-2k (Tainted: G B ): Padding overwritten. 0x00000000897a2e4f-0x000
[ 103.873187][ T1127] -----------------------------------------------------------------------------
[ 103.873187][ T1127]
[ 103.874252][ T1127] INFO: Slab 0x000000005cccc724 objects=5 used=5 fp=0x0000000000000000 flags=0x10000000001020
[ 103.881323][ T1127] CPU: 3 PID: 1127 Comm: hping3 Tainted: G B 5.7.0+ #575
[ 103.882131][ T1127] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 103.883006][ T1127] Call Trace:
[ 103.883324][ T1127] dump_stack+0x96/0xdb
[ 103.883716][ T1127] slab_err+0xad/0xd0
[ 103.884106][ T1127] ? _raw_spin_unlock+0x1f/0x30
[ 103.884620][ T1127] ? get_partial_node.isra.78+0x140/0x360
[ 103.885214][ T1127] slab_pad_check.part.53+0xf7/0x160
[ 103.885769][ T1127] ? pskb_expand_head+0x110/0xe10
[ 103.886316][ T1127] check_slab+0x97/0xb0
[ 103.886763][ T1127] alloc_debug_processing+0x84/0x1a0
[ 103.887308][ T1127] ___slab_alloc+0x5a5/0x630
[ 103.887765][ T1127] ? pskb_expand_head+0x110/0xe10
[ 103.888265][ T1127] ? lock_downgrade+0x730/0x730
[ 103.888762][ T1127] ? pskb_expand_head+0x110/0xe10
[ 103.889244][ T1127] ? __slab_alloc+0x3e/0x80
[ 103.889675][ T1127] __slab_alloc+0x3e/0x80
[ 103.890108][ T1127] __kmalloc_node_track_caller+0xc7/0x420
[ ... ]
Fixes: 11a766ce915f ("net: Increase xmit RECURSION_LIMIT to 10.")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexei Starovoitov says:
====================
pull-request: bpf 2020-06-17
The following pull-request contains BPF updates for your *net* tree.
We've added 10 non-merge commits during the last 2 day(s) which contain
a total of 14 files changed, 158 insertions(+), 59 deletions(-).
The main changes are:
1) Important fix for bpf_probe_read_kernel_str() return value, from Andrii.
2) [gs]etsockopt fix for large optlen, from Stanislav.
3) devmap allocation fix, from Toke.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix definition of bpf_ringbuf_output() in UAPI header comments, which is used
to generate libbpf's bpf_helper_defs.h header. Return value is a number (error
code), not a pointer.
Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200615214926.3638836-1-andriin@fb.com
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Pull rdma fixes from Jason Gunthorpe:
"Several regression fixes from work that landed in the merge window,
particularly in the mlx5 driver:
- Various static checker and warning fixes
- General bug fixes in rvt, qedr, hns, mlx5 and hfi1
- Several regression fixes related to the ECE and QP changes in last
cycle
- Fixes for a few long standing crashers in CMA, uverbs ioctl, and
xrc"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (25 commits)
IB/hfi1: Add atomic triggered sleep/wakeup
IB/hfi1: Correct -EBUSY handling in tx code
IB/hfi1: Fix module use count flaw due to leftover module put calls
IB/hfi1: Restore kfree in dummy_netdev cleanup
IB/mad: Fix use after free when destroying MAD agent
RDMA/mlx5: Protect from kernel crash if XRC_TGT doesn't have udata
RDMA/counter: Query a counter before release
RDMA/mad: Fix possible memory leak in ib_mad_post_receive_mads()
RDMA/mlx5: Fix integrity enabled QP creation
RDMA/mlx5: Remove ECE limitation from the RAW_PACKET QPs
RDMA/mlx5: Fix remote gid value in query QP
RDMA/mlx5: Don't access ib_qp fields in internal destroy QP path
RDMA/core: Check that type_attrs is not NULL prior access
RDMA/hns: Fix an cmd queue issue when resetting
RDMA/hns: Fix a calltrace when registering MR from userspace
RDMA/mlx5: Add missed RST2INIT and INIT2INIT steps during ECE handshake
RDMA/cma: Protect bind_list and listen_list while finding matching cm id
RDMA/qedr: Fix KASAN: use-after-free in ucma_event_handler+0x532
RDMA/efa: Set maximum pkeys device attribute
RDMA/rvt: Fix potential memory leak caused by rvt_alloc_rq
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Missed steps during ECE handshake left userspace application with less
options for the ECE handshake. Pass ECE options in the additional
transitions.
Fixes: 50aec2c3135e ("RDMA/mlx5: Return ECE data after modify QP")
Link: https://lore.kernel.org/r/20200616104536.2426384-1-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes gathered in the last two weeks.
The major changes here are fixes for the recent DPCM regressions found
on i.MX and Qualcomm platforms and fixes for resource leaks in ASoC
DAI registrations.
Other than those are mostly device-specific fixes including the usual
USB- and HD-audio quirks, and a fix for syzkaller case and ID updates
for new Intel platforms"
* tag 'sound-5.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (32 commits)
ALSA: usb-audio: Fix OOB access of mixer element list
ALSA: usb-audio: add quirk for Samsung USBC Headset (AKG)
ALSA: usb-audio: Add registration quirk for Kingston HyperX Cloud Flight S
ASoC: rockchip: Fix a reference count leak.
ASoC: amd: closing specific instance.
ALSA: hda: Intel: add missing PCI IDs for ICL-H, TGL-H and EKL
ASoC: hdac_hda: fix memleak with regmap not freed on remove
ASoC: SOF: Intel: add PCI IDs for ICL-H and TGL-H
ASoC: SOF: Intel: add PCI ID for CometLake-S
ASoC: Intel: SOF: merge COMETLAKE_LP and COMETLAKE_H
ALSA: hda/realtek: Add mute LED and micmute LED support for HP systems
ALSA: usb-audio: Fix potential use-after-free of streams
ALSA: hda/realtek - Add quirk for MSI GE63 laptop
ASoC: fsl_ssi: Fix bclk calculation for mono channel
ASoC: SOF: Intel: hda: Clear RIRB status before reading WP
ASoC: rt1015: Update rt1015 default register value according to spec modification.
ASoC: qcom: common: set correct directions for dailinks
ASoc: q6afe: add support to get port direction
ASoC: soc-pcm: fix checks for multi-cpu FE dailinks
ASoC: rt5682: Let dai clks be registered whether mclk exists or not
...
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v5.8
This is a collection of mostly small fixes, mostly fixing fallout from
some of the DPCM changes that went in last time around which shook out
some issues on i.MX and Qualcomm platforms. The addition of a managed
version of snd_soc_register_dai() is to fix resource leaks.
There's also a few new device IDs for x86 systems.
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The registration of DAIs may be done at two distinct times, once
during a component registration and later when loading a
topology. Since devm_ managed resources are freed in the reverse order
they were allocated, when a component starts unregistering DAIs by
walking through the DAI list, the memory allocated for the
topology-registered DAIs was freed already, which leads to 100%
reproducible KASAN use-after-free reports.
This patch suggests a new devm_ function to force the DAI list to be
updated prior to freeing the memory chunks referenced by the list
pointers.
Suggested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
BugLink: https://github.com/thesofproject/linux/issues/2186
Link: https://lore.kernel.org/r/20200612205938.26415-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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In DPCM case, Front-End needs to get the dma chan which has
been requested by Back-End and reuse it.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/429c6ae1f3c5b47eb893f475d531d71cdcfe34c0.1591947428.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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snd_soc_lookup_component_nolocked can be used for the DPCM case
that Front-End needs to get the unused platform component but
added by Back-End cpu dai driver.
If the component is gotten, then we can get the dma chan created
by Back-End component and reused it in Front-End.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/55f6e0d76f67a517b9a44136d790ff2a06b5caa8.1591947428.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"Quite a lot of fixes here for no single reason.
There's a collection of the usual sort of device specific fixes and
also a bunch of people have been working on spidev and the userspace
test program spidev_test so they've got an unusually large collection
of small fixes"
* tag 'spi-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spidev: fix a potential use-after-free in spidev_release()
spi: spidev: fix a race between spidev_release and spidev_remove
spi: stm32-qspi: Fix error path in case of -EPROBE_DEFER
spi: uapi: spidev: Use TABs for alignment
spi: spi-fsl-dspi: Free DMA memory with matching function
spi: tools: Add macro definitions to fix build errors
spi: tools: Make default_tx/rx and input_tx static
spi: dt-bindings: amlogic, meson-gx-spicc: Fix schema for meson-g12a
spi: rspi: Use requested instead of maximum bit rate
spi: spidev_test: Use %u to format unsigned numbers
spi: sprd: switch the sequence of setting WDG_LOAD_LOW and _HIGH
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The UAPI <linux/spi/spidev.h> uses TABs for alignment.
Convert the recently introduced spaces to TABs to restore consistency.
Fixes: 7bb64402a092136 ("spi: tools: Add macro definitions to fix build errors")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200613073755.15906-1-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add SPI_TX_OCTAL and SPI_RX_OCTAL to fix the following build errors:
CC spidev_test.o
spidev_test.c: In function ‘transfer’:
spidev_test.c:131:13: error: ‘SPI_TX_OCTAL’ undeclared (first use in this function)
if (mode & SPI_TX_OCTAL)
^
spidev_test.c:131:13: note: each undeclared identifier is reported only once for each function it appears in
spidev_test.c:137:13: error: ‘SPI_RX_OCTAL’ undeclared (first use in this function)
if (mode & SPI_RX_OCTAL)
^
spidev_test.c: In function ‘parse_opts’:
spidev_test.c:290:12: error: ‘SPI_TX_OCTAL’ undeclared (first use in this function)
mode |= SPI_TX_OCTAL;
^
spidev_test.c:308:12: error: ‘SPI_RX_OCTAL’ undeclared (first use in this function)
mode |= SPI_RX_OCTAL;
^
LD spidev_test-in.o
ld: cannot find spidev_test.o: No such file or directory
Additionally, maybe SPI_CS_WORD and SPI_3WIRE_HIZ will be used in the future,
so add them too.
Fixes: 896fa735084e ("spi: spidev_test: Add support for Octal mode data transfers")
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1591880212-13479-2-git-send-email-zhangqing@loongson.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- One fix for the interrupt rework we did last release which broke
KVM-PR
- Three commits fixing some fallout from the READ_ONCE() changes
interacting badly with our 8xx 16K pages support, which uses a pte_t
that is a structure of 4 actual PTEs
- A cleanup of the 8xx pte_update() to use the newly added pmd_off()
- A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is
enabled
- A minor fix for the SPU syscall generation
Thanks to Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike
Rapoport, Nicholas Piggin.
* tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/8xx: Provide ptep_get() with 16k pages
mm: Allow arches to provide ptep_get()
mm/gup: Use huge_ptep_get() in gup_hugepte()
powerpc/syscalls: Use the number when building SPU syscall table
powerpc/8xx: use pmd_off() to access a PMD entry in pte_update()
powerpc/64s: Fix KVM interrupt using wrong save area
powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
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Since commit 9e343b467c70 ("READ_ONCE: Enforce atomicity for
{READ,WRITE}_ONCE() memory accesses") it is not possible anymore to
use READ_ONCE() to access complex page table entries like the one
defined for powerpc 8xx with 16k size pages.
Define a ptep_get() helper that architectures can override instead
of performing a READ_ONCE() on the page table entry pointer.
Fixes: 9e343b467c70 ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/087fa12b6e920e32315136b998aa834f99242695.1592225558.git.christophe.leroy@csgroup.eu
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- NULL dereference in octeontx
- PM reference imbalance in ks-sa
- deadlock in crypto manager
- memory leak in drbg
- missing socket limit check on receive SG list size in algif_skcipher
- typos in caam
- warnings in ccp and hisilicon
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: drbg - always try to free Jitter RNG instance
crypto: marvell/octeontx - Fix a potential NULL dereference
crypto: algboss - don't wait during notifier callback
crypto: caam - fix typos
crypto: ccp - Fix sparse warnings in sev-dev
crypto: hisilicon - Cap block size at 2^31
crypto: algif_skcipher - Cap recv SG list at ctx->used
hwrng: ks-sa - Fix runtime PM imbalance on error
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This patch fixes a bunch of sparse warnings in sev-dev where the
__user marking is incorrectly handled.
Reported-by: kbuild test robot <lkp@intel.com>
Fixes: 7360e4b14350 ("crypto: ccp: Implement SEV_PEK_CERT_IMPORT...")
Fixes: e799035609e1 ("crypto: ccp: Implement SEV_PEK_CSR ioctl...")
Fixes: 76a2b524a4b1 ("crypto: ccp: Implement SEV_PDH_CERT_EXPORT...")
Fixes: d6112ea0cb34 ("crypto: ccp - introduce SEV_GET_ID2 command")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"One minor fix and two patches reworking the ata dma drain for the
!CONFIG_LIBATA case. The latter is a 5.7 regression fix"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
scsi: libata: Provide an ata_scsi_dma_need_drain stub for !CONFIG_ATA
scsi: ufs-bsg: Fix runtime PM imbalance on error
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SAS drivers can be compiled with ata support disabled. Provide a stub so
that the drivers don't have to ifdef around wiring up
ata_scsi_dma_need_drain.
Link: https://lore.kernel.org/r/20200615064624.37317-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- a small collection of remaining API conversion patches (all acked)
which allow to finally remove the deprecated API
- some documentation fixes and a MAINTAINERS addition
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: Add robert and myself as qcom i2c cci maintainers
i2c: smbus: Fix spelling mistake in the comments
Documentation/i2c: SMBus start signal is S not A
i2c: remove deprecated i2c_new_device API
Documentation: media: convert to use i2c_new_client_device()
video: backlight: tosa_lcd: convert to use i2c_new_client_device()
x86/platform/intel-mid: convert to use i2c_new_client_device()
drm: encoder_slave: use new I2C API
drm: encoder_slave: fix refcouting error for modules
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All in-tree users have been converted to the new i2c_new_client_device
function, so remove this deprecated one.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Have recordmcount work with > 64K sections (to support LTO)
- kprobe RCU fixes
- Correct a kprobe critical section with missing mutex
- Remove redundant arch_disarm_kprobe() call
- Fix lockup when kretprobe triggers within kprobe_flush_task()
- Fix memory leak in fetch_op_data operations
- Fix sleep in atomic in ftrace trace array sample code
- Free up memory on failure in sample trace array code
- Fix incorrect reporting of function_graph fields in format file
- Fix quote within quote parsing in bootconfig
- Fix return value of bootconfig tool
- Add testcases for bootconfig tool
- Fix maybe uninitialized warning in ftrace pid file code
- Remove unused variable in tracing_iter_reset()
- Fix some typos
* tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Fix maybe-uninitialized compiler warning
tools/bootconfig: Add testcase for show-command and quotes test
tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig
tools/bootconfig: Fix to use correct quotes for value
proc/bootconfig: Fix to use correct quotes for value
tracing: Remove unused event variable in tracing_iter_reset
tracing/probe: Fix memleak in fetch_op_data operations
trace: Fix typo in allocate_ftrace_ops()'s comment
tracing: Make ftrace packed events have align of 1
sample-trace-array: Remove trace_array 'sample-instance'
sample-trace-array: Fix sleeping function called from invalid context
kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
kprobes: Remove redundant arch_disarm_kprobe() call
kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
kprobes: Use non RCU traversal APIs on kprobe_tables if possible
kprobes: Suppress the suspicious RCU warning on kprobes
recordmcount: support >64k sections
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Ziqian reported lockup when adding retprobe on _raw_spin_lock_irqsave.
My test was also able to trigger lockdep output:
============================================
WARNING: possible recursive locking detected
5.6.0-rc6+ #6 Not tainted
--------------------------------------------
sched-messaging/2767 is trying to acquire lock:
ffffffff9a492798 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_hash_lock+0x52/0xa0
but task is already holding lock:
ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(kretprobe_table_locks[i].lock));
lock(&(kretprobe_table_locks[i].lock));
*** DEADLOCK ***
May be due to missing lock nesting notation
1 lock held by sched-messaging/2767:
#0: ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
stack backtrace:
CPU: 3 PID: 2767 Comm: sched-messaging Not tainted 5.6.0-rc6+ #6
Call Trace:
dump_stack+0x96/0xe0
__lock_acquire.cold.57+0x173/0x2b7
? native_queued_spin_lock_slowpath+0x42b/0x9e0
? lockdep_hardirqs_on+0x590/0x590
? __lock_acquire+0xf63/0x4030
lock_acquire+0x15a/0x3d0
? kretprobe_hash_lock+0x52/0xa0
_raw_spin_lock_irqsave+0x36/0x70
? kretprobe_hash_lock+0x52/0xa0
kretprobe_hash_lock+0x52/0xa0
trampoline_handler+0xf8/0x940
? kprobe_fault_handler+0x380/0x380
? find_held_lock+0x3a/0x1c0
kretprobe_trampoline+0x25/0x50
? lock_acquired+0x392/0xbc0
? _raw_spin_lock_irqsave+0x50/0x70
? __get_valid_kprobe+0x1f0/0x1f0
? _raw_spin_unlock_irqrestore+0x3b/0x40
? finish_task_switch+0x4b9/0x6d0
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
The code within the kretprobe handler checks for probe reentrancy,
so we won't trigger any _raw_spin_lock_irqsave probe in there.
The problem is in outside kprobe_flush_task, where we call:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave
where _raw_spin_lock_irqsave triggers the kretprobe and installs
kretprobe_trampoline handler on _raw_spin_lock_irqsave return.
The kretprobe_trampoline handler is then executed with already
locked kretprobe_table_locks, and first thing it does is to
lock kretprobe_table_locks ;-) the whole lockup path like:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave ---> probe triggered, kretprobe_trampoline installed
---> kretprobe_table_locks locked
kretprobe_trampoline
trampoline_handler
kretprobe_hash_lock(current, &head, &flags); <--- deadlock
Adding kprobe_busy_begin/end helpers that mark code with fake
probe installed to prevent triggering of another kprobe within
this code.
Using these helpers in kprobe_flush_task, so the probe recursion
protection check is hit and the probe is never set to prevent
above lockup.
Link: http://lkml.kernel.org/r/158927059835.27680.7011202830041561604.stgit@devnote2
Fixes: ef53d9c5e4da ("kprobes: improve kretprobe scalability with hashed locking")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Reported-by: "Ziqian SUN (Zamir)" <zsun@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"A feature (papr_scm health retrieval) and a fix (sysfs attribute
visibility) for v5.8.
Vaibhav explains in the merge commit below why missing v5.8 would be
painful and I agreed to try a -rc2 pull because only cosmetics kept
this out of -rc1 and his initial versions were posted in more than
enough time for v5.8 consideration:
'These patches are tied to specific features that were committed to
customers in upcoming distros releases (RHEL and SLES) whose
time-lines are tied to 5.8 kernel release.
Being able to track the health of an nvdimm is critical for our
customers that are running workloads leveraging papr-scm nvdimms.
Missing the 5.8 kernel would mean missing the distro timelines and
shifting forward the availability of this feature in distro kernels
by at least 6 months'
Summary:
- Fix the visibility of the region 'align' attribute.
The new unit tests for region alignment handling caught a corner
case where the alignment cannot be specified if the region is
converted from static to dynamic provisioning at runtime.
- Add support for device health retrieval for the persistent memory
supported by the papr_scm driver.
This includes both the standard sysfs "health flags" that the nfit
persistent memory driver publishes and a mechanism for the ndctl
tool to retrieve a health-command payload"
* tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nvdimm/region: always show the 'align' attribute
powerpc/papr_scm: Implement support for PAPR_PDSM_HEALTH
ndctl/papr_scm,uapi: Add support for PAPR nvdimm specific methods
powerpc/papr_scm: Improve error logging and handling papr_scm_ndctl()
powerpc/papr_scm: Fetch nvdimm health information from PHYP
seq_buf: Export seq_buf_printf
powerpc: Document details on H_SCM_HEALTH hcall
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Introduce support for PAPR NVDIMM Specific Methods (PDSM) in papr_scm
module and add the command family NVDIMM_FAMILY_PAPR to the white list
of NVDIMM command sets. Also advertise support for ND_CMD_CALL for the
nvdimm command mask and implement necessary scaffolding in the module
to handle ND_CMD_CALL ioctl and PDSM requests that we receive.
The layout of the PDSM request as we expect from libnvdimm/libndctl is
described in newly introduced uapi header 'papr_pdsm.h' which
defines a 'struct nd_pkg_pdsm' and a maximal union named
'nd_pdsm_payload'. These new structs together with 'struct nd_cmd_pkg'
for a pdsm envelop thats sent by libndctl to libnvdimm and serviced by
papr_scm in 'papr_scm_service_pdsm()'. The PDSM request is
communicated by member 'struct nd_cmd_pkg.nd_command' together with
other information on the pdsm payload (size-in, size-out).
The patch also introduces 'struct pdsm_cmd_desc' instances of which
are stored in an array __pdsm_cmd_descriptors[] indexed with PDSM cmd
and corresponding access function pdsm_cmd_desc() is
introduced. 'struct pdsm_cdm_desc' holds the service function for a
given PDSM and corresponding payload in/out sizes.
A new function papr_scm_service_pdsm() is introduced and is called from
papr_scm_ndctl() in case of a PDSM request is received via ND_CMD_CALL
command from libnvdimm. The function performs validation on the PDSM
payload based on info present in corresponding PDSM descriptor and if
valid calls the 'struct pdcm_cmd_desc.service' function to service the
PDSM.
Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20200615124407.32596-6-vaibhav@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Pull block fixes from Jens Axboe:
- Use import_uuid() where appropriate (Andy)
- bcache fixes (Coly, Mauricio, Zhiqiang)
- blktrace sparse warnings fix (Jan)
- blktrace concurrent setup fix (Luis)
- blkdev_get use-after-free fix (Jason)
- Ensure all blk-mq maps are updated (Weiping)
- Loop invalidate bdev fix (Zheng)
* tag 'block-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
block: make function 'kill_bdev' static
loop: replace kill_bdev with invalidate_bdev
partitions/ldm: Replace uuid_copy() with import_uuid() where it makes sense
block: update hctx map when use multiple maps
blktrace: Avoid sparse warnings when assigning q->blk_trace
blktrace: break out of blktrace setup on concurrent calls
block: Fix use-after-free in blkdev_get()
trace/events/block.h: drop kernel-doc for dropped function parameter
blk-mq: Remove redundant 'return' statement
bcache: pr_info() format clean up in bcache_device_init()
bcache: use delayed kworker fo asynchronous devices registration
bcache: check and adjust logical block size for backing devices
bcache: fix potential deadlock problem in btree_gc_coalesce
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kill_bdev does not have any external user, so make it static.
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Fix kernel-doc warning: the parameter was removed, so also remove
the kernel-doc notation for it.
../include/trace/events/block.h:278: warning: Excess function parameter 'error' description in 'trace_block_bio_complete'
Fixes: d24de76af836 ("block: remove the error argument to the block_bio_complete tracepoint")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull libata fixes from Jens Axboe:
"A few minor changes that should go into this release"
* tag 'libata-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
libata: Use per port sync for detach
ata/libata: Fix usage of page address by page_address in ata_scsi_mode_select_xlat function
sata_rcar: handle pm_runtime_get_sync failure cases
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Commit 130f4caf145c ("libata: Ensure ata_port probe has completed before
detach") may cause system freeze during suspend.
Using async_synchronize_full() in PM callbacks is wrong, since async
callbacks that are already scheduled may wait for not-yet-scheduled
callbacks, causes a circular dependency.
Instead of using big hammer like async_synchronize_full(), use async
cookie to make sure port probe are synced, without affecting other
scheduled PM callbacks.
Fixes: 130f4caf145c ("libata: Ensure ata_port probe has completed before detach")
Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: John Garry <john.garry@huawei.com>
BugLink: https://bugs.launchpad.net/bugs/1867983
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull ceph fixes from Ilya Dryomov:
"An important follow-up for replica reads support that went into -rc1
and two target_copy() fixups"
* tag 'ceph-for-5.8-rc2' of git://github.com/ceph/ceph-client:
libceph: don't omit used_replica in target_copy()
libceph: don't omit recovery_deletes in target_copy()
libceph: move away from global osd_req_flags
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osd_req_flags is overly general and doesn't suit its only user
(read_from_replica option) well:
- applying osd_req_flags in account_request() affects all OSD
requests, including linger (i.e. watch and notify). However,
linger requests should always go to the primary even though
some of them are reads (e.g. notify has side effects but it
is a read because it doesn't result in mutation on the OSDs).
- calls to class methods that are reads are allowed to go to
the replica, but most such calls issued for "rbd map" and/or
exclusive lock transitions are requested to be resent to the
primary via EAGAIN, doubling the latency.
Get rid of global osd_req_flags and set read_from_replica flag
only on specific OSD requests instead.
Fixes: 8ad44d5e0d1e ("libceph: read_from_replica option")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull flex-array size helper from Kees Cook:
"During the treewide clean-ups of zero-length "flexible arrays", the
struct_size() helper was heavily used, but it was noticed that many
times it would have been nice to have an additional helper to get the
size of just the flexible array itself.
This need appears to be even more common when cleaning up the 1-byte
array "flexible arrays", so Gustavo implemented it.
I'd love to get this landed early so it can be used during the v5.9
dev cycle to ease the 1-byte array cleanups."
* tag 'overflow-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
overflow.h: Add flex_array_size() helper
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Add flex_array_size() helper for the calculation of the size, in bytes,
of a flexible array member contained within an enclosing structure.
Example of usage:
struct something {
size_t count;
struct foo items[];
};
struct something *instance;
instance = kmalloc(struct_size(instance, items, count), GFP_KERNEL);
instance->count = count;
memcpy(instance->items, src, flex_array_size(instance, items, instance->count));
The helper returns SIZE_MAX on overflow instead of wrapping around.
Additionally replaces parameter "n" with "count" in struct_size() helper
for greater clarity and unification.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200609012233.GA3371@embeddedor
Signed-off-by: Kees Cook <keescook@chromium.org>
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Merge non-faulting memory access cleanups from Christoph Hellwig:
"Andrew and I decided to drop the patches implementing your suggested
rename of the probe_kernel_* and probe_user_* helpers from -mm as
there were way to many conflicts.
After -rc1 might be a good time for this as all the conflicts are
resolved now"
This also adds a type safety checking patch on top of the renaming
series to make the subtle behavioral difference between 'get_user()' and
'get_kernel_nofault()' less potentially dangerous and surprising.
* emailed patches from Christoph Hellwig <hch@lst.de>:
maccess: make get_kernel_nofault() check for minimal type compatibility
maccess: rename probe_kernel_address to get_kernel_nofault
maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
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Now that we've renamed probe_kernel_address() to get_kernel_nofault()
and made it look and behave more in line with get_user(), some of the
subtle type behavior differences end up being more obvious and possibly
dangerous.
When you do
get_user(val, user_ptr);
the type of the access comes from the "user_ptr" part, and the above
basically acts as
val = *user_ptr;
by design (except, of course, for the fact that the actual dereference
is done with a user access).
Note how in the above case, the type of the end result comes from the
pointer argument, and then the value is cast to the type of 'val' as
part of the assignment.
So the type of the pointer is ultimately the more important type both
for the access itself.
But 'get_kernel_nofault()' may now _look_ similar, but it behaves very
differently. When you do
get_kernel_nofault(val, kernel_ptr);
it behaves like
val = *(typeof(val) *)kernel_ptr;
except, of course, for the fact that the actual dereference is done with
exception handling so that a faulting access is suppressed and returned
as the error code.
But note how different the casting behavior of the two superficially
similar accesses are: one does the actual access in the size of the type
the pointer points to, while the other does the access in the size of
the target, and ignores the pointer type entirely.
Actually changing get_kernel_nofault() to act like get_user() is almost
certainly the right thing to do eventually, but in the meantime this
patch adds logit to at least verify that the pointer type is compatible
with the type of the result.
In many cases, this involves just casting the pointer to 'void *' to
make it obvious that the type of the pointer is not the important part.
It's not how 'get_user()' acts, but at least the behavioral difference
is now obvious and explicit.
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Better describe what this helper does, and match the naming of
copy_from_kernel_nofault.
Also switch the argument order around, so that it acts and looks
like get_user().
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Better describe what these functions do.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Better describe what these functions do.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently, address spaces in warnings are displayed as '<asn:X>' with
'X' being the address space's arbitrary number.
But since sparse v0.6.0-rc1 (late December 2018), sparse allows you to
define the address spaces using an identifier instead of a number. This
identifier is then directly used in the warnings.
So, use the identifiers '__user', '__iomem', '__percpu' & '__rcu' for
the corresponding address spaces. The default address space, __kernel,
being not displayed in warnings, stays defined as '0'.
With this change, warnings that used to be displayed as:
cast removes address space '<asn:1>' of expression
... void [noderef] <asn:2> *
will now be displayed as:
cast removes address space '__user' of expression
... void [noderef] __iomem *
This also moves the __kernel annotation to be the first one, since it is
quite different from the others because it's the default one, and so:
- it's never displayed
- it's normally not needed, nor in type annotations, nor in cast
between address spaces. The only time it's needed is when it's
combined with a typeof to express "the same type as this one but
without the address space"
- it can't be defined with a name, '0' must be used.
So, it seemed strange to me to have it in the middle of the other
ones.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull networking fixes from David Miller:
1) Don't get per-cpu pointer with preemption enabled in nft_set_pipapo,
fix from Stefano Brivio.
2) Fix memory leak in ctnetlink, from Pablo Neira Ayuso.
3) Multiple definitions of MPTCP_PM_MAX_ADDR, from Geliang Tang.
4) Accidently disabling NAPI in non-error paths of macb_open(), from
Charles Keepax.
5) Fix races between alx_stop and alx_remove, from Zekun Shen.
6) We forget to re-enable SRIOV during resume in bnxt_en driver, from
Michael Chan.
7) Fix memory leak in ipv6_mc_destroy_dev(), from Wang Hai.
8) rxtx stats use wrong index in mvpp2 driver, from Sven Auhagen.
9) Fix memory leak in mptcp_subflow_create_socket error path, from Wei
Yongjun.
10) We should not adjust the TCP window advertised when sending dup acks
in non-SACK mode, because it won't be counted as a dup by the sender
if the window size changes. From Eric Dumazet.
11) Destroy the right number of queues during remove in mvpp2 driver,
from Sven Auhagen.
12) Various WOL and PM fixes to e1000 driver, from Chen Yu, Vaibhav
Gupta, and Arnd Bergmann.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (35 commits)
e1000e: fix unused-function warning
e1000: use generic power management
e1000e: Do not wake up the system via WOL if device wakeup is disabled
lan743x: add MODULE_DEVICE_TABLE for module loading alias
mlxsw: spectrum: Adjust headroom buffers for 8x ports
bareudp: Fixed configuration to avoid having garbage values
mvpp2: remove module bugfix
tcp: grow window for OOO packets only for SACK flows
mptcp: fix memory leak in mptcp_subflow_create_socket()
netfilter: flowtable: Make nf_flow_table_offload_add/del_cb inline
net/sched: act_ct: Make tcf_ct_flow_table_restore_skb inline
net: dsa: sja1105: fix PTP timestamping with large tc-taprio cycles
mvpp2: ethtool rxtx stats fix
MAINTAINERS: switch to my private email for Renesas Ethernet drivers
rocker: fix incorrect error handling in dma_rings_init
test_objagg: Fix potential memory leak in error handling
net: ethernet: mtk-star-emac: simplify interrupt handling
mld: fix memory leak in ipv6_mc_destroy_dev()
bnxt_en: Return from timer if interface is not in open state.
bnxt_en: Fix AER reset logic on 57500 chips.
...
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Currently, nf_flow_table_offload_add/del_cb are exported by nf_flow_table
module, therefore modules using them will have hard-dependency
on nf_flow_table and will require loading it all the time.
This can lead to an unnecessary overhead on systems that do not
use this API.
To relax the hard-dependency between the modules, we unexport these
functions and make them static inline.
Fixes: 978703f42549 ("netfilter: flowtable: Add API for registering to flow table events")
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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