1. 06 Sep, 2019 4 commits
    • Eric Dumazet's avatar
      net: sched: fix reordering issues · b88dd52c
      Eric Dumazet authored
      Whenever MQ is not used on a multiqueue device, we experience
      serious reordering problems. Bisection found the cited
      commit.
      
      The issue can be described this way :
      
      - A single qdisc hierarchy is shared by all transmit queues.
        (eg : tc qdisc replace dev eth0 root fq_codel)
      
      - When/if try_bulk_dequeue_skb_slow() dequeues a packet targetting
        a different transmit queue than the one used to build a packet train,
        we stop building the current list and save the 'bad' skb (P1) in a
        special queue. (bad_txq)
      
      - When dequeue_skb() calls qdisc_dequeue_skb_bad_txq() and finds this
        skb (P1), it checks if the associated transmit queues is still in frozen
        state. If the queue is still blocked (by BQL or NIC tx ring full),
        we leave the skb in bad_txq and return NULL.
      
      - dequeue_skb() calls q->dequeue() to get another packet (P2)
      
        The other packet can target the problematic queue (that we found
        in frozen state for the bad_txq packet), but another cpu just ran
        TX completion and made room in the txq that is now ready to accept
        new packets.
      
      - Packet P2 is sent while P1 is still held in bad_txq, P1 might be sent
        at next round. In practice P2 is the lead of a big packet train
        (P2,P3,P4 ...) filling the BQL budget and delaying P1 by many packets :/
      
      To solve this problem, we have to block the dequeue process as long
      as the first packet in bad_txq can not be sent. Reordering issues
      disappear and no side effects have been seen.
      
      Fixes: a53851e2
      
       ("net: sched: explicit locking in gso_cpu fallback")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: John Fastabend <john.fastabend@gmail.com>
      Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b88dd52c
    • David S. Miller's avatar
      Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec · 2e9550ed
      David S. Miller authored
      
      
      Steffen Klassert says:
      
      ====================
      pull request (net): ipsec 2019-09-05
      
      1) Several xfrm interface fixes from Nicolas Dichtel:
         - Avoid an interface ID corruption on changelink.
         - Fix wrong intterface names in the logs.
         - Fix a list corruption when changing network namespaces.
         - Fix unregistation of the underying phydev.
      
      2) Fix a potential warning when merging xfrm_plocy nodes.
         From Florian Westphal.
      
      Please pull or let me know if there are problems.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2e9550ed
    • Zhu Yanjun's avatar
      forcedeth: use per cpu to collect xmit/recv statistics · f4b633b9
      Zhu Yanjun authored
      When testing with a background iperf pushing 1Gbit/sec traffic and running
      both ifconfig and netstat to collect statistics, some deadlocks occurred.
      
      Ifconfig and netstat will call nv_get_stats64 to get software xmit/recv
      statistics. In the commit f5d827ae ("forcedeth: implement
      ndo_get_stats64() API"), the normal tx/rx variables is to collect tx/rx
      statistics. The fix is to replace normal tx/rx variables with per
      cpu 64-bit variable to collect xmit/recv statistics. The per cpu variable
      will avoid deadlocks and provide fast efficient statistics updates.
      
      In nv_probe, the per cpu variable is initialized. In nv_remove, this
      per cpu variable is freed.
      
      In xmit/recv process, this per cpu variable will be updated.
      
      In nv_get_stats64, this per cpu variable on each cpu is added up. Then
      the driver can get xmit/recv packets statistics.
      
      A test runs for several days with this commit, the deadlocks disappear
      and the performance is better.
      
      Tested:
         - iperf SMP x86_64 ->
         Client connecting to 1.1.1.108, TCP port 5001
         TCP window size: 85.0 KByte (default)
         ------------------------------------------------------------
         [  3] local 1.1.1.105 port 38888 connected with 1.1.1.108 port 5001
         [ ID] Interval       Transfer     Bandwidth
         [  3]  0.0-10.0 sec  1.10 GBytes   943 Mbits/sec
      
         ifconfig results:
      
         enp0s9 Link encap:Ethernet  HWaddr 00:21:28:6f:de:0f
                inet addr:1.1.1.105  Bcast:0.0.0.0  Mask:255.255.255.0
                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                RX packets:5774764531 errors:0 dropped:0 overruns:0 frame:0
                TX packets:633534193 errors:0 dropped:0 overruns:0 carrier:0
                collisions:0 txqueuelen:1000
                RX bytes:7646159340904 (7.6 TB) TX bytes:11425340407722 (11.4 TB)
      
         netstat results:
      
         Kernel Interface table
         Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
         ...
         enp0s9 1500 0  5774764531 0    0 0      633534193      0      0  0 BMRU
         ...
      
      Fixes: f5d827ae
      
       ("forcedeth: implement ndo_get_stats64() API")
      CC: Joe Jin <joe.jin@oracle.com>
      CC: JUNXIAO_BI <junxiao.bi@oracle.com>
      Reported-and-tested-by: default avatarNan san <nan.1986san@gmail.com>
      Signed-off-by: default avatarZhu Yanjun <yanjun.zhu@oracle.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f4b633b9
    • Mao Wenan's avatar
      net: sonic: return NETDEV_TX_OK if failed to map buffer · 6e1cdedc
      Mao Wenan authored
      NETDEV_TX_BUSY really should only be used by drivers that call
      netif_tx_stop_queue() at the wrong moment. If dma_map_single() is
      failed to map tx DMA buffer, it might trigger an infinite loop.
      This patch use NETDEV_TX_OK instead of NETDEV_TX_BUSY, and change
      printk to pr_err_ratelimited.
      
      Fixes: d9fb9f38
      
       ("*sonic/natsemi/ns83829: Move the National Semi-conductor drivers")
      Signed-off-by: default avatarMao Wenan <maowenan@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6e1cdedc
  2. 05 Sep, 2019 9 commits
  3. 04 Sep, 2019 7 commits
    • Maciej Żenczykowski's avatar
      net-ipv6: fix excessive RTF_ADDRCONF flag on ::1/128 local route (and others) · d55a2e37
      Maciej Żenczykowski authored
      There is a subtle change in behaviour introduced by:
        commit c7a1ce39
        'ipv6: Change addrconf_f6i_alloc to use ip6_route_info_create'
      
      Before that patch /proc/net/ipv6_route includes:
      00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000003 00000000 80200001 lo
      
      Afterwards /proc/net/ipv6_route includes:
      00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000002 00000000 80240001 lo
      
      ie. the above commit causes the ::1/128 local (automatic) route to be flagged with RTF_ADDRCONF (0x040000).
      
      AFAICT, this is incorrect since these routes are *not* coming from RA's.
      
      As such, this patch restores the old behaviour.
      
      Fixes: c7a1ce39
      
       ("ipv6: Change addrconf_f6i_alloc to use ip6_route_info_create")
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Lorenzo Colitti <lorenzo@google.com>
      Signed-off-by: default avatarMaciej Żenczykowski <maze@google.com>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d55a2e37
    • Xin Long's avatar
      sctp: use transport pf_retrans in sctp_do_8_2_transport_strike · 10eb56c5
      Xin Long authored
      Transport should use its own pf_retrans to do the error_count
      check, instead of asoc's. Otherwise, it's meaningless to make
      pf_retrans per transport.
      
      Fixes: 5aa93bcf
      
       ("sctp: Implement quick failover draft from tsvwg")
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Acked-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
      Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      10eb56c5
    • David Howells's avatar
      rxrpc: Fix misplaced traceline · 59132894
      David Howells authored
      There's a misplaced traceline in rxrpc_input_packet() which is looking at a
      packet that just got released rather than the replacement packet.
      
      Fix this by moving the traceline after the assignment that moves the new
      packet pointer to the actual packet pointer.
      
      Fixes: d0d5c0cd
      
       ("rxrpc: Use skb_unshare() rather than skb_cow_data()")
      Reported-by: default avatarHillf Danton <hdanton@sina.com>
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      59132894
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf · d471c6f7
      David S. Miller authored
      
      
      Pablo Neira Ayuso says:
      
      ====================
      Netfilter fixes for net
      
      The following patchset contains Netfilter fixes for net:
      
      1) br_netfilter drops IPv6 packets if ipv6 is disabled, from Leonardo Bras.
      
      2) nft_socket hits BUG() due to illegal skb->sk caching, patch from
         Fernando Fernandez Mancera.
      
      3) nft_fib_netdev could be called with ipv6 disabled, leading to crash
         in the fib lookup, also from Leonardo.
      
      4) ctnetlink honors IPS_OFFLOAD flag, just like nf_conntrack sysctl does.
      
      5) Properly set up flowtable entry timeout, otherwise immediate
         removal by garbage collector might occur.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d471c6f7
    • Navid Emamdoost's avatar
      Bluetooth: bpa10x: change return value · d94dfd79
      Navid Emamdoost authored
      
      
      When returning from bpa10x_send_frame, it is necessary to propagate any
      potential errno returned from usb_submit_urb.
      Signed-off-by: default avatarNavid Emamdoost <navid.emamdoost@gmail.com>
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      d94dfd79
    • Harish Bandi's avatar
      Bluetooth: hci_qca: disable irqs when spinlock is acquired · 31fb1bbd
      Harish Bandi authored
      
      
      Looks like Deadlock is observed in hci_qca while performing
      stress and stability tests. Since same lock is getting
      acquired from qca_wq_awake_rx and hci_ibs_tx_idle_timeout
      seeing spinlock recursion, irqs should be disable while
      acquiring the spinlock always.
      Signed-off-by: default avatarHarish Bandi <c-hbandi@codeaurora.org>
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      31fb1bbd
    • Jian-Hong Pan's avatar
      Bluetooth: btrtl: Additional Realtek 8822CE Bluetooth devices · 6d0762b1
      Jian-Hong Pan authored
      The ASUS X412FA laptop contains a Realtek RTL8822CE device with an
      associated BT chip using a USB ID of 04ca:4005. This ID is added to the
      driver.
      
      The /sys/kernel/debug/usb/devices portion for this device is:
      
      T:  Bus=01 Lev=01 Prnt=01 Port=09 Cnt=04 Dev#=  4 Spd=12   MxCh= 0
      D:  Ver= 1.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
      P:  Vendor=04ca ProdID=4005 Rev= 0.00
      S:  Manufacturer=Realtek
      S:  Product=Bluetooth Radio
      S:  SerialNumber=00e04c000001
      C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=500mA
      I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
      E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
      E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
      I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
      E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
      I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
      E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
      I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
      E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
      I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
      E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
      I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
      E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
      I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
      E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
      E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
      
      Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=204707
      
      Signed-off-by: default avatarJian-Hong Pan <jian-hong@endlessm.com>
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      6d0762b1
  4. 03 Sep, 2019 3 commits
  5. 02 Sep, 2019 7 commits
    • Fernando Fernandez Mancera's avatar
      netfilter: nft_socket: fix erroneous socket assignment · 039b1f4f
      Fernando Fernandez Mancera authored
      The socket assignment is wrong, see skb_orphan():
      When skb->destructor callback is not set, but skb->sk is set, this hits BUG().
      
      Link: https://bugzilla.redhat.com/show_bug.cgi?id=1651813
      Fixes: 554ced0a
      
       ("netfilter: nf_tables: add support for native socket matching")
      Signed-off-by: default avatarFernando Fernandez Mancera <ffmancera@riseup.net>
      Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      039b1f4f
    • Leonardo Bras's avatar
      netfilter: bridge: Drops IPv6 packets if IPv6 module is not loaded · 48bd0d68
      Leonardo Bras authored
      
      
      A kernel panic can happen if a host has disabled IPv6 on boot and have to
      process guest packets (coming from a bridge) using it's ip6tables.
      
      IPv6 packets need to be dropped if the IPv6 module is not loaded, and the
      host ip6tables will be used.
      Signed-off-by: default avatarLeonardo Bras <leonardo@linux.ibm.com>
      Acked-by: default avatarFlorian Westphal <fw@strlen.de>
      Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      48bd0d68
    • Yizhuo's avatar
      net: stmmac: dwmac-sun8i: Variable "val" in function sun8i_dwmac_set_syscon()... · e33b4325
      Yizhuo authored
      
      net: stmmac: dwmac-sun8i: Variable "val" in function sun8i_dwmac_set_syscon() could be uninitialized
      
      In function sun8i_dwmac_set_syscon(), local variable "val" could
      be uninitialized if function regmap_field_read() returns -EINVAL.
      However, it will be used directly in the if statement, which
      is potentially unsafe.
      Signed-off-by: default avatarYizhuo <yzhai003@ucr.edu>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e33b4325
    • Linus Torvalds's avatar
      Linux 5.3-rc7 · 089cf7f6
      Linus Torvalds authored
      089cf7f6
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 49ffdb4c
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are some small char and misc driver fixes for reported issues for
        5.3-rc7
      
        Also included in here is the documentation for how we are handling
        hardware issues under embargo that everyone has finally agreed on, as
        well as a MAINTAINERS update for the suckers who agreed to handle the
        LICENSES/ files.
      
        All of these have been in linux-next last week with no reported
        issues"
      
      * tag 'char-misc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        fsi: scom: Don't abort operations for minor errors
        vmw_balloon: Fix offline page marking with compaction
        VMCI: Release resource if the work is already queued
        Documentation/process: Embargoed hardware security issues
        lkdtm/bugs: fix build error in lkdtm_EXHAUST_STACK
        mei: me: add Tiger Lake point LP device ID
        intel_th: pci: Add Tiger Lake support
        intel_th: pci: Add support for another Lewisburg PCH
        stm class: Fix a double free of stm_source_device
        MAINTAINERS: add entry for LICENSES and SPDX stuff
        fpga: altera-ps-spi: Fix getting of optional confd gpio
      49ffdb4c
    • Linus Torvalds's avatar
      Merge tag 'usb-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 2c248f92
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are some small USB fixes that have been in linux-next this past
        week for 5.3-rc7
      
        They fix the usual xhci, syzbot reports, and other small issues that
        have come up last week.
      
        All have been in linux-next with no reported issues"
      
      * tag 'usb-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        USB: cdc-wdm: fix race between write and disconnect due to flag abuse
        usb: host: xhci: rcar: Fix typo in compatible string matching
        usb: host: xhci-tegra: Set DMA mask correctly
        USB: storage: ums-realtek: Whitelist auto-delink support
        USB: storage: ums-realtek: Update module parameter description for auto_delink_en
        usb: host: ohci: fix a race condition between shutdown and irq
        usb: hcd: use managed device resources
        typec: tcpm: fix a typo in the comparison of pdo_max_voltage
        usb-storage: Add new JMS567 revision to unusual_devs
        usb: chipidea: udc: don't do hardware access if gadget has stopped
        usbtmc: more sanity checking for packet size
        usb: udc: lpc32xx: silence fall-through warning
      2c248f92
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · 345464fb
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix some length checks during OGM processing in batman-adv, from
          Sven Eckelmann.
      
       2) Fix regression that caused netfilter conntrack sysctls to not be
          per-netns any more. From Florian Westphal.
      
       3) Use after free in netpoll, from Feng Sun.
      
       4) Guard destruction of pfifo_fast per-cpu qdisc stats with
          qdisc_is_percpu_stats(), from Davide Caratti. Similar bug is fixed
          in pfifo_fast_enqueue().
      
       5) Fix memory leak in mld_del_delrec(), from Eric Dumazet.
      
       6) Handle neigh events on internal ports correctly in nfp, from John
          Hurley.
      
       7) Clear SKB timestamp in NF flow table code so that it does not
          confuse fq scheduler. From Florian Westphal.
      
       8) taprio destroy can crash if it is invoked in a failure path of
          taprio_init(), because the list head isn't setup properly yet and
          the list del is unconditional. Perform the list add earlier to
          address this. From Vladimir Oltean.
      
       9) Make sure to reapply vlan filters on device up, in aquantia driver.
          From Dmitry Bogdanov.
      
      10) sgiseeq driver releases DMA memory using free_page() instead of
          dma_free_attrs(). From Christophe JAILLET.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (58 commits)
        net: seeq: Fix the function used to release some memory in an error handling path
        enetc: Add missing call to 'pci_free_irq_vectors()' in probe and remove functions
        net: bcmgenet: use ethtool_op_get_ts_info()
        tc-testing: don't hardcode 'ip' in nsPlugin.py
        net: dsa: microchip: add KSZ8563 compatibility string
        dt-bindings: net: dsa: document additional Microchip KSZ8563 switch
        net: aquantia: fix out of memory condition on rx side
        net: aquantia: linkstate irq should be oneshot
        net: aquantia: reapply vlan filters on up
        net: aquantia: fix limit of vlan filters
        net: aquantia: fix removal of vlan 0
        net/sched: cbs: Set default link speed to 10 Mbps in cbs_set_port_rate
        taprio: Set default link speed to 10 Mbps in taprio_set_picos_per_byte
        taprio: Fix kernel panic in taprio_destroy
        net: dsa: microchip: fill regmap_config name
        rxrpc: Fix lack of conn cleanup when local endpoint is cleaned up [ver #2]
        net: stmmac: dwmac-rk: Don't fail if phy regulator is absent
        amd-xgbe: Fix error path in xgbe_mod_init()
        netfilter: nft_meta_bridge: Fix get NFT_META_BRI_IIFVPROTO in network byteorder
        mac80211: Correctly set noencrypt for PAE frames
        ...
      345464fb
  6. 01 Sep, 2019 10 commits