| Commit message (Collapse) | Author | Age | Files | Lines |
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Now that the code to support the legacy binding has been removed,
remove the documentation for it.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Two easy cases of overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking fixes from David Miller:
"Just the usual assortment of small'ish fixes:
1) Conntrack timeout is sometimes not initialized properly, from
Alexander Potapenko.
2) Add a reasonable range limit to tcp_min_rtt_wlen to avoid
undefined behavior. From ZhangXiaoxu.
3) des1 field of descriptor in stmmac driver is initialized with the
wrong variable. From Yue Haibing.
4) Increase mlxsw pci sw reset timeout a little bit more, from Ido
Schimmel.
5) Match IOT2000 stmmac devices more accurately, from Su Bao Cheng.
6) Fallback refcount fix in TLS code, from Jakub Kicinski.
7) Fix max MTU check when using XDP in mlx5, from Maxim Mikityanskiy.
8) Fix recursive locking in team driver, from Hangbin Liu.
9) Fix tls_set_device_offload_Rx() deadlock, from Jakub Kicinski.
10) Don't use napi_alloc_frag() outside of softiq context of socionext
driver, from Ilias Apalodimas.
11) MAC address increment overflow in ncsi, from Tao Ren.
12) Fix a regression in 8K/1M pool switching of RDS, from Zhu Yanjun.
13) ipv4_link_failure has to validate the headers that are actually
there because RAW sockets can pass in arbitrary garbage, from Eric
Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
ipv4: add sanity checks in ipv4_link_failure()
net/rose: fix unbound loop in rose_loopback_timer()
rxrpc: fix race condition in rxrpc_input_packet()
net: rds: exchange of 8K and 1M pool
net: vrf: Fix operation not supported when set vrf mac
net/ncsi: handle overflow when incrementing mac address
net: socionext: replace napi_alloc_frag with the netdev variant on init
net: atheros: fix spelling mistake "underun" -> "underrun"
spi: ST ST95HF NFC: declare missing of table
spi: Micrel eth switch: declare missing of table
net: stmmac: move stmmac_check_ether_addr() to driver probe
netfilter: fix nf_l4proto_log_invalid to log invalid packets
netfilter: never get/set skb->tstamp
netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
Documentation: decnet: remove reference to CONFIG_DECNET_ROUTE_FWMARK
dt-bindings: add an explanation for internal phy-mode
net/tls: don't leak IV and record seq when offload fails
net/tls: avoid potential deadlock in tls_set_device_offload_rx()
selftests/net: correct the return value for run_afpackettests
team: fix possible recursive locking when add slaves
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CONFIG_DECNET_ROUTE_FWMARK was removed in commit 47dcf0cb1005 ("[NET]: Rethink mark field in struct flowi")
Since nothing replace it (and nothindg need to replace it, simply remove
it from documentation.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When working on the Allwinner internal PHY, the first work was to use
the "internal" mode, but some answer was made my mail on what are really
internal mean for PHY.
This patch write that in the doc.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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I've discovered following discrepancy in the bindings/net/ethernet.txt
documentation, where it states following:
- nvmem-cells: phandle, reference to an nvmem node for the MAC address;
- nvmem-cell-names: string, should be "mac-address" if nvmem is to be..
which is actually misleading and confusing. There are only two ethernet
drivers in the tree, cadence/macb and davinci which supports this
properties.
This nvmem-cell* properties were introduced in commit 9217e566bdee
("of_net: Implement of_get_nvmem_mac_address helper"), but
commit afa64a72b862 ("of: net: kill of_get_nvmem_mac_address()")
forget to properly clean up this parts.
So this patch fixes the documentation by moving the nvmem-cell*
properties at the appropriate places. While at it, I've removed unused
include as well.
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Fixes: afa64a72b862 ("of: net: kill of_get_nvmem_mac_address()")
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a UBSAN report as below:
UBSAN: Undefined behaviour in net/ipv4/tcp_input.c:2877:56
signed integer overflow:
2147483647 * 1000 cannot be represented in type 'int'
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.1.0-rc4-00058-g582549e #1
Call Trace:
<IRQ>
dump_stack+0x8c/0xba
ubsan_epilogue+0x11/0x60
handle_overflow+0x12d/0x170
? ttwu_do_wakeup+0x21/0x320
__ubsan_handle_mul_overflow+0x12/0x20
tcp_ack_update_rtt+0x76c/0x780
tcp_clean_rtx_queue+0x499/0x14d0
tcp_ack+0x69e/0x1240
? __wake_up_sync_key+0x2c/0x50
? update_group_capacity+0x50/0x680
tcp_rcv_established+0x4e2/0xe10
tcp_v4_do_rcv+0x22b/0x420
tcp_v4_rcv+0xfe8/0x1190
ip_protocol_deliver_rcu+0x36/0x180
ip_local_deliver+0x15b/0x1a0
ip_rcv+0xac/0xd0
__netif_receive_skb_one_core+0x7f/0xb0
__netif_receive_skb+0x33/0xc0
netif_receive_skb_internal+0x84/0x1c0
napi_gro_receive+0x2a0/0x300
receive_buf+0x3d4/0x2350
? detach_buf_split+0x159/0x390
virtnet_poll+0x198/0x840
? reweight_entity+0x243/0x4b0
net_rx_action+0x25c/0x770
__do_softirq+0x19b/0x66d
irq_exit+0x1eb/0x230
do_IRQ+0x7a/0x150
common_interrupt+0xf/0xf
</IRQ>
It can be reproduced by:
echo 2147483647 > /proc/sys/net/ipv4/tcp_min_rtt_wlen
Fixes: f672258391b42 ("tcp: track min RTT using windowed min-filter")
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- several new key mappings for HID
- a host of new ACPI IDs used to identify Elan touchpads in Lenovo
laptops
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
HID: input: add mapping for "Toggle Display" key
HID: input: add mapping for "Full Screen" key
HID: input: add mapping for keyboard Brightness Up/Down/Toggle keys
HID: input: add mapping for Expose/Overview key
HID: input: fix mapping of aspect ratio key
[media] doc-rst: switch to new names for Full Screen/Aspect keys
Input: document meanings of KEY_SCREEN and KEY_ZOOM
Input: elan_i2c - add hardware ID for multiple Lenovo laptops
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We defined better names for keys to activate full screen mode or
change aspect ratio (while keeping the existing keycodes to avoid
breaking userspace), so let's use them in the document.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Alexei Starovoitov says:
====================
pull-request: bpf-next 2019-04-22
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) allow stack/queue helpers from more bpf program types, from Alban.
2) allow parallel verification of root bpf programs, from Alexei.
3) introduce bpf sysctl hook for trusted root cases, from Andrey.
4) recognize var/datasec in btf deduplication, from Andrii.
5) cpumap performance optimizations, from Jesper.
6) verifier prep for alu32 optimization, from Jiong.
7) libbpf xsk cleanup, from Magnus.
8) other various fixes and cleanups.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Document the verifier limits.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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In commit da7031491786 ("bpf: Document BPF_PROG_TYPE_CGROUP_SYSCTL")
Andrey proposes to put per-prog type docs under Documentation/bpf/
Let's move flow dissector documentation there as well.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add documentation for BPF_PROG_TYPE_CGROUP_SYSCTL, including general
info, attach type, context, return code, helpers, example and usage
considerations.
A separate file prog_cgroup_sysctl.rst is added to Documentation/bpf/.
In the future more program types can be documented in their own
prog_<name>.rst files.
Another way to place program type specific documentation would be to
group program types somehow (e.g. cgroup.rst for all cgroup-bpf
programs), but it may not scale well since some program types may belong
to different groups, e.g. BPF_PROG_TYPE_CGROUP_SKB can be documented
together with either cgroup-bpf programs or programs that access skb.
The new file is added to the index and verified by `make htmldocs` /
sanity-check by lynx.
Signed-off-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add the documentation for PHY reset lines controlled by a reset controller.
Signed-off-by: David Bauer <mail@david-bauer.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To make ICMPv6 closer to ICMPv4, add ratemask parameter. Since the ICMP
message types use larger numeric values, a simple bitmask doesn't fit.
I use large bitmap. The input and output are the in form of list of
ranges. Set the default to rate limit all error messages but Packet Too
Big. For Packet Too Big, use ratemask instead of hard-coded.
There are functions where icmpv6_xrlim_allow() and icmpv6_global_allow()
aren't called. This patch only adds them to icmpv6_echo_reply().
Rate limiting error messages is mandated by RFC 4443 but RFC 4890 says
that it is also acceptable to rate limit informational messages. Thus,
I removed the current hard-coded behavior of icmpv6_mask_allow() that
doesn't rate limit informational messages.
v2: Add dummy function proc_do_large_bitmap() if CONFIG_PROC_SYSCTL
isn't defined, expand the description in ip-sysctl.txt and remove
unnecessary conditional before kfree().
v3: Inline the bitmap instead of dynamically allocated. Still is a
pointer to it is needed because of the way proc_do_large_bitmap work.
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflict resolution of af_smc.c from Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make rxrpc_kernel_check_life() pass back the life counter through the
argument list and return true if the call has not yet completed.
Suggested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch also performs some minor adjustments such as numbering for
the receive path sequence, conversion of keywords to inline literals and
adding an index page so it looks better in the output of 'make htmldocs'.
Signed-off-by: Ioana Ciornei <ciorneiioana@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2019-04-12
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Improve BPF verifier scalability for large programs through two
optimizations: i) remove verifier states that are not useful in pruning,
ii) stop walking parentage chain once first LIVE_READ is seen. Combined
gives approx 20x speedup. Increase limits for accepting large programs
under root, and add various stress tests, from Alexei.
2) Implement global data support in BPF. This enables static global variables
for .data, .rodata and .bss sections to be properly handled which allows
for more natural program development. This also opens up the possibility
to optimize program workflow by compiling ELFs only once and later only
rewriting section data before reload, from Daniel and with test cases and
libbpf refactoring from Joe.
3) Add config option to generate BTF type info for vmlinux as part of the
kernel build process. DWARF debug info is converted via pahole to BTF.
Latter relies on libbpf and makes use of BTF deduplication algorithm which
results in 100x savings compared to DWARF data. Resulting .BTF section is
typically about 2MB in size, from Andrii.
4) Add BPF verifier support for stack access with variable offset from
helpers and add various test cases along with it, from Andrey.
5) Extend bpf_skb_adjust_room() growth BPF helper to mark inner MAC header
so that L2 encapsulation can be used for tc tunnels, from Alan.
6) Add support for input __sk_buff context in BPF_PROG_TEST_RUN so that
users can define a subset of allowed __sk_buff fields that get fed into
the test program, from Stanislav.
7) Add bpf fs multi-dimensional array tests for BTF test suite and fix up
various UBSAN warnings in bpftool, from Yonghong.
8) Generate a pkg-config file for libbpf, from Luca.
9) Dump program's BTF id in bpftool, from Prashant.
10) libbpf fix to use smaller BPF log buffer size for AF_XDP's XDP
program, from Magnus.
11) kallsyms related fixes for the case when symbols are not present in
BPF selftests and samples, from Daniel
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds the BTF specification and UAPI bits for supporting BTF Var
and DataSec kinds. This is following LLVM upstream commit ac4082b77e07
("[BPF] Add BTF Var and DataSec Support") which has been merged recently.
Var itself is for describing a global variable and DataSec to describe
ELF sections e.g. data/bss/rodata sections that hold one or multiple
global variables.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
"A collection of fixes from the last few weeks. Most of them are
smaller tweaks and fixes to DT and hardware descriptions for boards.
Some of the more significant ones are:
- eMMC and RGMII stability tweaks for rk3288
- DDC fixes for Rock PI 4
- Audio fixes for two TI am335x eval boards
- D_CAN clock fix for am335x
- Compilation fixes for clang
- !HOTPLUG_CPU compilation fix for one of the new platforms this
release (milbeaut)
- A revert of a gpio fix for nomadik that instead was fixed in the
gpio subsystem
- Whitespace fix for the DT JSON schema (no tabs allowed)"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits)
ARM: milbeaut: fix build with !CONFIG_HOTPLUG_CPU
ARM: iop: don't use using 64-bit DMA masks
ARM: orion: don't use using 64-bit DMA masks
Revert "ARM: dts: nomadik: Fix polarity of SPI CS"
dt-bindings: cpu: Fix JSON schema
arm/mach-at91/pm : fix possible object reference leak
ARM: dts: at91: Fix typo in ISC_D0 on PC9
ARM: dts: Fix dcan clkctrl clock for am3
reset: meson-audio-arb: Fix missing .owner setting of reset_controller_dev
dt-bindings: reset: meson-g12a: Add missing USB2 PHY resets
ARM: dts: rockchip: Remove #address/#size-cells from rk3288-veyron gpio-keys
ARM: dts: rockchip: Remove #address/#size-cells from rk3288 mipi_dsi
ARM: dts: rockchip: Fix gpu opp node names for rk3288
ARM: dts: am335x-evmsk: Correct the regulators for the audio codec
ARM: dts: am335x-evm: Correct the regulators for the audio codec
ARM: OMAP2+: add missing of_node_put after of_device_is_available
ARM: OMAP1: ams-delta: Fix broken GPIO ID allocation
arm64: dts: stratix10: add the sysmgr-syscon property from the gmac's
arm64: dts: rockchip: fix rk3328 sdmmc0 write errors
arm64: dts: rockchip: fix rk3328 rgmii high tx error rate
...
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Commit fd73403a4862 ("dt-bindings: arm: Add SMP enable-method for
Milbeaut") added support for a new cpu enable-method, but did so using
tabulations to ident. This is however invalid in the syntax, and resulted
in a failure when trying to use that schemas for validation.
Use spaces instead of tabs to indent to fix this.
Fixes: fd73403a4862 ("dt-bindings: arm: Add SMP enable-method for Milbeaut")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Sugaya Taichi <sugaya.taichi@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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The output of the PSI files show a bunch of numbers with no unit. The
psi.txt documentation file also does not indicate what units are used.
One can only find out by looking at the source code. The units are
percentage for the averages and useconds for the total. Make the
information easier to find by documenting the units in psi.txt.
Link: http://lkml.kernel.org/r/20190402193810.3450-1-longman@redhat.com
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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For very short input data (0 - 1 bytes), lzo-rle was not behaving
correctly. Fix this behaviour and update documentation accordingly.
For zero-length input, lzo v0 outputs an end-of-stream marker only,
which was misinterpreted by lzo-rle as a bitstream version number.
Ensure bitstream versions > 0 require a minimum stream length of 5.
Also fixes a bug in handling the tail for very short inputs when a
bitstream version is present.
Link: http://lkml.kernel.org/r/20190326165857.34613-1-dave.rodgman@arm.com
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add firmware parameter id (fw.psid).
Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add documentation for the device tree bindings of the MDIO mux of Amlogic
g12a SoC family
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Minor comment merge conflict in mlx5.
Staging driver has a fixup due to the skb->xmit_more changes
in 'net-next', but was removed in 'net'.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking fixes from David Miller:
1) Several hash table refcount fixes in batman-adv, from Sven
Eckelmann.
2) Use after free in bpf_evict_inode(), from Daniel Borkmann.
3) Fix mdio bus registration in ixgbe, from Ivan Vecera.
4) Unbounded loop in __skb_try_recv_datagram(), from Paolo Abeni.
5) ila rhashtable corruption fix from Herbert Xu.
6) Don't allow upper-devices to be added to vrf devices, from Sabrina
Dubroca.
7) Add qmi_wwan device ID for Olicard 600, from Bjørn Mork.
8) Don't leave skb->next poisoned in __netif_receive_skb_list_ptype,
from Alexander Lobakin.
9) Missing IDR checks in mlx5 driver, from Aditya Pakki.
10) Fix false connection termination in ktls, from Jakub Kicinski.
11) Work around some ASPM issues with r8169 by disabling rx interrupt
coalescing on certain chips. From Heiner Kallweit.
12) Properly use per-cpu qstat values on NOLOCK qdiscs, from Paolo
Abeni.
13) Fully initialize sockaddr_in structures in SCTP, from Xin Long.
14) Various BPF flow dissector fixes from Stanislav Fomichev.
15) Divide by zero in act_sample, from Davide Caratti.
16) Fix bridging multicast regression introduced by rhashtable
conversion, from Nikolay Aleksandrov.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits)
ibmvnic: Fix completion structure initialization
ipv6: sit: reset ip header pointer in ipip6_rcv
net: bridge: always clear mcast matching struct on reports and leaves
libcxgb: fix incorrect ppmax calculation
vlan: conditional inclusion of FCoE hooks to match netdevice.h and bnx2x
sch_cake: Make sure we can write the IP header before changing DSCP bits
sch_cake: Use tc_skb_protocol() helper for getting packet protocol
tcp: Ensure DCTCP reacts to losses
net/sched: act_sample: fix divide by zero in the traffic path
net: thunderx: fix NULL pointer dereference in nicvf_open/nicvf_stop
net: hns: Fix sparse: some warnings in HNS drivers
net: hns: Fix WARNING when remove HNS driver with SMMU enabled
net: hns: fix ICMP6 neighbor solicitation messages discard problem
net: hns: Fix probabilistic memory overwrite when HNS driver initialized
net: hns: Use NAPI_POLL_WEIGHT for hns driver
net: hns: fix KASAN: use-after-free in hns_nic_net_xmit_hw()
flow_dissector: rst'ify documentation
ipv6: Fix dangling pointer when ipv6 fragment
net-gro: Fix GRO flush when receiving a GSO packet.
flow_dissector: document BPF flow dissector environment
...
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Rename bpf_flow_dissector.txt to bpf_flow_dissector.rst and fix
formatting. Also, link it from the Documentation/networking/index.rst.
Tested with 'make htmldocs' to make sure it looks reasonable.
Fixes: ae82899bbe92 ("flow_dissector: document BPF flow dissector environment")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Short doc on what BPF flow dissector should expect in the input
__sk_buff and flow_keys.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Daniel Borkmann says:
====================
pull-request: bpf 2019-03-29
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Bug fix in BTF deduplication that was mishandling an equivalence
comparison, from Andrii.
2) libbpf Makefile fixes to properly link against libelf for the shared
object and to actually export AF_XDP's xsk.h header, from Björn.
3) Fix use after free in bpf inode eviction, from Daniel.
4) Fix a bug in skb creation out of cpumap redirect, from Jesper.
5) Remove an unnecessary and triggerable WARN_ONCE() in max number
of call stack frames checking in verifier, from Paul.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Section 2.2.1 BTF_KIND_INT a bullet list was collapsed due to
text reflow in commit 9ab5305dbe3f ("docs/btf: reflow text to
fill up to 78 characters").
This patch correct the mistake. Also adjust next bullet list,
which is used for comparison, to get rendered the same way.
Fixes: 9ab5305dbe3f ("docs/btf: reflow text to fill up to 78 characters")
Link: https://www.kernel.org/doc/html/latest/bpf/btf.html#btf-kind-int
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Couple of minor hwmon fixes"
* tag 'hwmon-for-v5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
dt-bindings: hwmon: (adc128d818) Specify ti,mode property size
hwmon: (ntc_thermistor) Fix temperature type reporting
hwmon: (occ) Fix power sensor indexing
hwmon: (w83773g) Select REGMAP_I2C to fix build error
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By default, cells in DT are 32-bit in size. The driver reads "ti,mode"
using the function of_property_read_u8() which causes the value to be
read incorrectly in little-endian architectures if the size is not
specified.
Make it explicit in the binding documentation that this prorperty must
be set as a 8-bit value.
Signed-off-by: Carlos Menin <menin@carlosaurelio.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Pull KVM fixes from Paolo Bonzini:
"A collection of x86 and ARM bugfixes, and some improvements to
documentation.
On top of this, a cleanup of kvm_para.h headers, which were exported
by some architectures even though they not support KVM at all. This is
responsible for all the Kbuild changes in the diffstat"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
Documentation: kvm: clarify KVM_SET_USER_MEMORY_REGION
KVM: doc: Document the life cycle of a VM and its resources
KVM: selftests: complete IO before migrating guest state
KVM: selftests: disable stack protector for all KVM tests
KVM: selftests: explicitly disable PIE for tests
KVM: selftests: assert on exit reason in CR4/cpuid sync test
KVM: x86: update %rip after emulating IO
x86/kvm/hyper-v: avoid spurious pending stimer on vCPU init
kvm/x86: Move MSR_IA32_ARCH_CAPABILITIES to array emulated_msrs
KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
kvm: don't redefine flags as something else
kvm: mmu: Used range based flushing in slot_handle_level_range
KVM: export <linux/kvm_para.h> and <asm/kvm_para.h> iif KVM is supported
KVM: x86: remove check on nr_mmu_pages in kvm_arch_commit_memory_region()
kvm: nVMX: Add a vmentry check for HOST_SYSENTER_ESP and HOST_SYSENTER_EIP fields
KVM: SVM: Workaround errata#1096 (insn_len maybe zero on SMAP violation)
KVM: Reject device ioctls from processes other than the VM's creator
KVM: doc: Fix incorrect word ordering regarding supported use of APIs
KVM: x86: fix handling of role.cr4_pae and rename it to 'gpte_size'
KVM: nVMX: Do not inherit quadrant and invalid for the root shadow EPT
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The documentation does not mention how to delete a slot, add the
information.
Reported-by: Nathaniel McCallum <npmccallum@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The series to add memcg accounting to KVM allocations[1] states:
There are many KVM kernel memory allocations which are tied to the
life of the VM process and should be charged to the VM process's
cgroup.
While it is correct to account KVM kernel allocations to the cgroup of
the process that created the VM, it's technically incorrect to state
that the KVM kernel memory allocations are tied to the life of the VM
process. This is because the VM itself, i.e. struct kvm, is not tied to
the life of the process which created it, rather it is tied to the life
of its associated file descriptor. In other words, kvm_destroy_vm() is
not invoked until fput() decrements its associated file's refcount to
zero. A simple example is to fork() in Qemu and have the child sleep
indefinitely; kvm_destroy_vm() isn't called until Qemu closes its file
descriptor *and* the rogue child is killed.
The allocations are guaranteed to be *accounted* to the process which
created the VM, but only because KVM's per-{VM,vCPU} ioctls reject the
ioctl() with -EIO if kvm->mm != current->mm. I.e. the child can keep
the VM "alive" but can't do anything useful with its reference.
Note that because 'struct kvm' also holds a reference to the mm_struct
of its owner, the above behavior also applies to userspace allocations.
Given that mucking with a VM's file descriptor can lead to subtle and
undesirable behavior, e.g. memcg charges persisting after a VM is shut
down, explicitly document a VM's lifecycle and its impact on the VM's
resources.
Alternatively, KVM could aggressively free resources when the creating
process exits, e.g. via mmu_notifier->release(). However, mmu_notifier
isn't guaranteed to be available, and freeing resources when the creator
exits is likely to be error prone and fragile as KVM would need to
ensure that it only freed resources that are truly out of reach. In
practice, the existing behavior shouldn't be problematic as a properly
configured system will prevent a child process from being moved out of
the appropriate cgroup hierarchy, i.e. prevent hiding the process from
the OOM killer, and will prevent an unprivileged user from being able to
to hold a reference to struct kvm via another method, e.g. debugfs.
[1]https://patchwork.kernel.org/patch/10806707/
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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KVM's API requires thats ioctls must be issued from the same process
that created the VM. In other words, userspace can play games with a
VM's file descriptors, e.g. fork(), SCM_RIGHTS, etc..., but only the
creator can do anything useful. Explicitly reject device ioctls that
are issued by a process other than the VM's creator, and update KVM's
API documentation to extend its requirements to device ioctls.
Fixes: 852b6d57dc7f ("kvm: add device control API")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Per Paolo[1], instantiating multiple VMs in a single process is legal;
but this conflicts with KVM's API documentation, which states:
The only supported use is one virtual machine per process, and one
vcpu per thread.
However, an earlier section in the documentation states:
Only run VM ioctls from the same process (address space) that was used
to create the VM.
and:
Only run vcpu ioctls from the same thread that was used to create the
vcpu.
This suggests that the conflicting documentation is simply an incorrect
ordering of of words, i.e. what's really meant is that a virtual machine
can't be shared across multiple processes and a vCPU can't be shared
across multiple threads.
Tweak the blurb on issuing ioctls to use a more assertive tone, and
rewrite the "supported use" sentence to reference said blurb instead of
poorly restating it in different terms.
Opportunistically add missing punctuation.
[1] https://lkml.kernel.org/r/f23265d4-528e-3bd4-011f-4d7b8f3281db@redhat.com
Fixes: 9c1b96e34717 ("KVM: Document basic API")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
[Improve notes on asynchronous ioctl]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The cr4_pae flag is a bit of a misnomer, its purpose is really to track
whether the guest PTE that is being shadowed is a 4-byte entry or an
8-byte entry. Prior to supporting nested EPT, the size of the gpte was
reflected purely by CR4.PAE. KVM fudged things a bit for direct sptes,
but it was mostly harmless since the size of the gpte never mattered.
Now that a spte may be tracking an indirect EPT entry, relying on
CR4.PAE is wrong and ill-named.
For direct shadow pages, force the gpte_size to '1' as they are always
8-byte entries; EPT entries can only be 8-bytes and KVM always uses
8-byte entries for NPT and its identity map (when running with EPT but
not unrestricted guest).
Likewise, nested EPT entries are always 8-bytes. Nested EPT presents a
unique scenario as the size of the entries are not dictated by CR4.PAE,
but neither is the shadow page a direct map. To handle this scenario,
set cr0_wp=1 and smap_andnot_wp=1, an otherwise impossible combination,
to denote a nested EPT shadow page. Use the information to avoid
incorrectly zapping an unsync'd indirect page in __kvm_sync_page().
Providing a consistent and accurate gpte_size fixes a bug reported by
Vitaly where fast_cr3_switch() always fails when switching from L2 to
L1 as kvm_mmu_get_page() would force role.cr4_pae=0 for direct pages,
whereas kvm_calc_mmu_role_common() would set it according to CR4.PAE.
Fixes: 7dcd575520082 ("x86/kvm/mmu: check if tdp/shadow MMU reconfiguration is needed")
Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty and serial driver fixes for 5.1-rc3.
Nothing major here, just a number of potential problems fixes for
error handling paths, as well as some other minor bugfixes for
reported issues with 5.1-rc1.
All of these have been in linux-next with no reported issues"
* tag 'tty-5.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: fix NULL pointer issue when tty_port ops is not set
Disable kgdboc failed by echo space to /sys/module/kgdboc/parameters/kgdboc
dt-bindings: serial: Add compatible for Mediatek MT8183
tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped
tty/serial: atmel: Add is_half_duplex helper
serial: sh-sci: Fix setting SCSCR_TIE while transferring data
serial: ar933x_uart: Fix build failure with disabled console
tty: serial: qcom_geni_serial: Initialize baud in qcom_geni_console_setup
sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()
tty: mxs-auart: fix a potential NULL pointer dereference
tty: atmel_serial: fix a potential NULL pointer dereference
serial: max310x: Fix to avoid potential NULL pointer dereference
serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference
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This adds dt-binding documentation of uart for Mediatek MT8183 SoC
Platform.
Signed-off-by: Erin Lo <erin.lo@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A new ID for the i801 driver and some Documentation fixes to make it
easier for people to find the bindings (which is also a basis for
further improvements in that area)"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: wmt: make bindings file name match the driver
i2c: sun6i-p2wi: make bindings file name match the driver
i2c: stu300: make bindings file name match the driver
i2c: mt65xx: make bindings file name match the driver
i2c: iop3xx: make bindings file name match the driver
i2c: i801: Add support for Intel Comet Lake
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If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
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If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Add PCI ID for Intel Comet Lake PCH.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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