1. 14 Apr, 2019 2 commits
    • Denis Bolotin's avatar
      qed: Delete redundant doorbell recovery types · 9ac6bb14
      Denis Bolotin authored
      DB_REC_DRY_RUN (running doorbell recovery without sending doorbells) is
      never used. DB_REC_ONCE (send a single doorbell from the doorbell recovery)
      is not needed anymore because by running the periodic handler we make sure
      we check the overflow status later instead.
      This patch is needed because in the next patches, the only doorbell
      recovery type being used is DB_REC_REAL_DEAL, and the fixes are much
      cleaner without this enum.
      Signed-off-by: default avatarDenis Bolotin <dbolotin@marvell.com>
      Signed-off-by: default avatarMichal Kalderon <mkalderon@marvell.com>
      Signed-off-by: default avatarAriel Elior <aelior@marvell.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9ac6bb14
    • Eric Dumazet's avatar
      ipv4: ensure rcu_read_lock() in ipv4_link_failure() · c543cb4a
      Eric Dumazet authored
      fib_compute_spec_dst() needs to be called under rcu protection.
      
      syzbot reported :
      
      WARNING: suspicious RCU usage
      5.1.0-rc4+ #165 Not tainted
      include/linux/inetdevice.h:220 suspicious rcu_dereference_check() usage!
      
      other info that might help us debug this:
      
      rcu_scheduler_active = 2, debug_locks = 1
      1 lock held by swapper/0/0:
       #0: 0000000051b67925 ((&n->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
       #0: 0000000051b67925 ((&n->timer)){+.-.}, at: call_timer_fn+0xda/0x720 kernel/time/timer.c:1315
      
      stack backtrace:
      CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.1.0-rc4+ #165
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      Call Trace:
       <IRQ>
       __dump_stack lib/dump_stack.c:77 [inline]
       dump_stack+0x172/0x1f0 lib/dump_stack.c:113
       lockdep_rcu_suspicious+0x153/0x15d kernel/locking/lockdep.c:5162
       __in_dev_get_rcu include/linux/inetdevice.h:220 [inline]
       fib_compute_spec_dst+0xbbd/0x1030 net/ipv4/fib_frontend.c:294
       spec_dst_fill net/ipv4/ip_options.c:245 [inline]
       __ip_options_compile+0x15a7/0x1a10 net/ipv4/ip_options.c:343
       ipv4_link_failure+0x172/0x400 net/ipv4/route.c:1195
       dst_link_failure include/net/dst.h:427 [inline]
       arp_error_report+0xd1/0x1c0 net/ipv4/arp.c:297
       neigh_invalidate+0x24b/0x570 net/core/neighbour.c:995
       neigh_timer_handler+0xc35/0xf30 net/core/neighbour.c:1081
       call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
       expire_timers kernel/time/timer.c:1362 [inline]
       __run_timers kernel/time/timer.c:1681 [inline]
       __run_timers kernel/time/timer.c:1649 [inline]
       run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694
       __do_softirq+0x266/0x95a kernel/softirq.c:293
       invoke_softirq kernel/softirq.c:374 [inline]
       irq_exit+0x180/0x1d0 kernel/softirq.c:414
       exiting_irq arch/x86/include/asm/apic.h:536 [inline]
       smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062
       apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
      
      Fixes: ed0de45a ("ipv4: recompile ip options in ipv4_link_failure")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
      Cc: Stephen Suryaputra <ssuryaextr@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c543cb4a
  2. 13 Apr, 2019 1 commit
  3. 12 Apr, 2019 19 commits
  4. 11 Apr, 2019 18 commits
    • David Ahern's avatar
      selftests: fib_tests: Fix 'Command line is not complete' errors · a5f62298
      David Ahern authored
      A couple of tests are verifying a route has been removed. The helper
      expects the prefix as the first part of the expected output. When
      checking that a route has been deleted the prefix is empty leading
      to an invalid ip command:
      
        $ ip ro ls match
        Command line is not complete. Try option "help"
      
      Fix by moving the comparison of expected output and output to a new
      function that is used by both check_route and check_route6. Use the
      new helper for the 2 checks on route removal.
      
      Also, remove the reset of 'set -x' in route_setup which overrides the
      user managed setting.
      
      Fixes: d69faad7 ("selftests: fib_tests: Add prefix route tests with metric")
      Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a5f62298
    • YueHaibing's avatar
      net: netrom: Fix error cleanup path of nr_proto_init · d3706566
      YueHaibing authored
      Syzkaller report this:
      
      BUG: unable to handle kernel paging request at fffffbfff830524b
      PGD 237fe8067 P4D 237fe8067 PUD 237e64067 PMD 1c9716067 PTE 0
      Oops: 0000 [#1] SMP KASAN PTI
      CPU: 1 PID: 4465 Comm: syz-executor.0 Not tainted 5.0.0+ #5
      Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
      RIP: 0010:__list_add_valid+0x21/0xe0 lib/list_debug.c:23
      Code: 8b 0c 24 e9 17 fd ff ff 90 55 48 89 fd 48 8d 7a 08 53 48 89 d3 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 48 83 ec 08 <80> 3c 02 00 0f 85 8b 00 00 00 48 8b 53 08 48 39 f2 75 35 48 89 f2
      RSP: 0018:ffff8881ea2278d0 EFLAGS: 00010282
      RAX: dffffc0000000000 RBX: ffffffffc1829250 RCX: 1ffff1103d444ef4
      RDX: 1ffffffff830524b RSI: ffffffff85659300 RDI: ffffffffc1829258
      RBP: ffffffffc1879250 R08: fffffbfff0acb269 R09: fffffbfff0acb269
      R10: ffff8881ea2278f0 R11: fffffbfff0acb268 R12: ffffffffc1829250
      R13: dffffc0000000000 R14: 0000000000000008 R15: ffffffffc187c830
      FS:  00007fe0361df700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: fffffbfff830524b CR3: 00000001eb39a001 CR4: 00000000007606e0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
      PKRU: 55555554
      Call Trace:
       __list_add include/linux/list.h:60 [inline]
       list_add include/linux/list.h:79 [inline]
       proto_register+0x444/0x8f0 net/core/sock.c:3375
       nr_proto_init+0x73/0x4b3 [netrom]
       ? 0xffffffffc1628000
       ? 0xffffffffc1628000
       do_one_initcall+0xbc/0x47d init/main.c:887
       do_init_module+0x1b5/0x547 kernel/module.c:3456
       load_module+0x6405/0x8c10 kernel/module.c:3804
       __do_sys_finit_module+0x162/0x190 kernel/module.c:3898
       do_syscall_64+0x9f/0x450 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe
      RIP: 0033:0x462e99
      Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
      RSP: 002b:00007fe0361dec58 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
      RAX: ffffffffffffffda RBX: 000000000073bf00 RCX: 0000000000462e99
      RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003
      RBP: 00007fe0361dec70 R08: 0000000000000000 R09: 0000000000000000
      R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe0361df6bc
      R13: 00000000004bcefa R14: 00000000006f6fb0 R15: 0000000000000004
      Modules linked in: netrom(+) ax25 fcrypt pcbc af_alg arizona_ldo1 v4l2_common videodev media v4l2_dv_timings hdlc ide_cd_mod snd_soc_sigmadsp_regmap snd_soc_sigmadsp intel_spi_platform intel_spi mtd spi_nor snd_usbmidi_lib usbcore lcd ti_ads7950 hi6421_regulator snd_soc_kbl_rt5663_max98927 snd_soc_hdac_hdmi snd_hda_ext_core snd_hda_core snd_soc_rt5663 snd_soc_core snd_pcm_dmaengine snd_compress snd_soc_rl6231 mac80211 rtc_rc5t583 spi_slave_time leds_pwm hid_gt683r hid industrialio_triggered_buffer kfifo_buf industrialio ir_kbd_i2c rc_core led_class_flash dwc_xlgmac snd_ymfpci gameport snd_mpu401_uart snd_rawmidi snd_ac97_codec snd_pcm ac97_bus snd_opl3_lib snd_timer snd_seq_device snd_hwdep snd soundcore iptable_security iptable_raw iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter bpfilter ip6_vti ip_vti ip_gre ipip sit tunnel4 ip_tunnel hsr veth netdevsim vxcan batman_adv cfg80211 rfkill chnl_net caif nlmon dummy team bonding vcan
       bridge stp llc ip6_gre gre ip6_tunnel tunnel6 tun joydev mousedev ppdev tpm kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ide_pci_generic piix aesni_intel aes_x86_64 crypto_simd cryptd glue_helper ide_core psmouse input_leds i2c_piix4 serio_raw intel_agp intel_gtt ata_generic agpgart pata_acpi parport_pc rtc_cmos parport floppy sch_fq_codel ip_tables x_tables sha1_ssse3 sha1_generic ipv6 [last unloaded: rxrpc]
      Dumping ftrace buffer:
         (ftrace buffer empty)
      CR2: fffffbfff830524b
      ---[ end trace 039ab24b305c4b19 ]---
      
      If nr_proto_init failed, it may forget to call proto_unregister,
      tiggering this issue.This patch rearrange code of nr_proto_init
      to avoid such issues.
      Reported-by: default avatarHulk Robot <hulkci@huawei.com>
      Signed-off-by: default avatarYueHaibing <yuehaibing@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d3706566
    • Andy Duan's avatar
      net: fec: manage ahb clock in runtime pm · d7c3a206
      Andy Duan authored
      Some SOC like i.MX6SX clock have some limits:
      - ahb clock should be disabled before ipg.
      - ahb and ipg clocks are required for MAC MII bus.
      So, move the ahb clock to runtime management together with
      ipg clock.
      Signed-off-by: default avatarFugang Duan <fugang.duan@nxp.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d7c3a206
    • Nikolay Aleksandrov's avatar
      net: bridge: multicast: use rcu to access port list from br_multicast_start_querier · c5b493ce
      Nikolay Aleksandrov authored
      br_multicast_start_querier() walks over the port list but it can be
      called from a timer with only multicast_lock held which doesn't protect
      the port list, so use RCU to walk over it.
      
      Fixes: c83b8fab ("bridge: Restart queries when last querier expires")
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c5b493ce
    • David S. Miller's avatar
      Merge branch 'thunderx-xdp-mtu' · 9a4dda81
      David S. Miller authored
      Matteo Croce says:
      
      ====================
      Fix thunderx MTU with XDP
      
      The thunderx driver can't use XDP with all MTU values.
      This patches sets the right MTU values, and add a check to avoid setting
      a wrong value which will not function.
      
      v3: Fix a copy-paste from two functions, tested on proper hardware:
      
      2: enP2p1s0v0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
          link/ether 1c:1b:0d:0d:52:a4 brd ff:ff:ff:ff:ff:ff
      [  787.019730] nicvf 0002:01:00.1 enP2p1s0v0: Jumbo frames not yet supported with XDP, current MTU 1800.
      RTNETLINK answers: Operation not supported
      [  800.574568] nicvf 0002:01:00.1 enP2p1s0v0: Link is Up 10000 Mbps Full duplex
      [  807.248321] nicvf 0002:01:00.1 enP2p1s0v0: Jumbo frames not yet supported with XDP, current MTU 1500.
      RTNETLINK answers: Invalid argument
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9a4dda81
    • Matteo Croce's avatar
      net: thunderx: don't allow jumbo frames with XDP · 1f227d16
      Matteo Croce authored
      The thunderx driver forbids to load an eBPF program if the MTU is too high,
      but this can be circumvented by loading the eBPF, then raising the MTU.
      
      Fix this by limiting the MTU if an eBPF program is already loaded.
      
      Fixes: 05c773f5 ("net: thunderx: Add basic XDP support")
      Signed-off-by: default avatarMatteo Croce <mcroce@redhat.com>
      Acked-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1f227d16
    • Matteo Croce's avatar
      net: thunderx: raise XDP MTU to 1508 · 5ee15c10
      Matteo Croce authored
      The thunderx driver splits frames bigger than 1530 bytes to multiple
      pages, making impossible to run an eBPF program on it.
      This leads to a maximum MTU of 1508 if QinQ is in use.
      
      The thunderx driver forbids to load an eBPF program if the MTU is higher
      than 1500 bytes. Raise the limit to 1508 so it is possible to use L2
      protocols which need some more headroom.
      
      Fixes: 05c773f5 ("net: thunderx: Add basic XDP support")
      Signed-off-by: default avatarMatteo Croce <mcroce@redhat.com>
      Acked-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5ee15c10
    • David S. Miller's avatar
      Merge branch 'smc-fixes' · 796fff0c
      David S. Miller authored
      Ursula Braun says:
      
      ====================
      net/smc: fixes 2019-04-11
      
      here are some fixes in different areas of the smc code for the net
      tree.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      796fff0c
    • Ursula Braun's avatar
      net/smc: move unhash before release of clcsock · f61bca58
      Ursula Braun authored
      Commit <26d92e95>
      ("net/smc: move unhash as early as possible in smc_release()")
      fixes one occurrence in the smc code, but the same pattern exists
      in other places. This patch covers the remaining occurrences and
      makes sure, the unhash operation is done before the smc->clcsock is
      released. This avoids a potential use-after-free in smc_diag_dump().
      Reviewed-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
      Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f61bca58
    • Karsten Graul's avatar
      net/smc: fix return code from FLUSH command · 8ef659f1
      Karsten Graul authored
      The FLUSH command is used to empty the pnet table. No return code is
      expected from the command. Commit a9d8b0b1e3d6 added namespace support
      for the pnet table and changed the FLUSH command processing to call
      smc_pnet_remove_by_pnetid() to remove the pnet entries. This function
      returns -ENOENT when no entry was deleted, which is now the return code
      of the FLUSH command. As a result the FLUSH command will return an error
      when the pnet table is already empty.
      Restore the expected behavior and let FLUSH always return 0.
      
      Fixes: a9d8b0b1e3d6 ("net/smc: add pnet table namespace support")
      Signed-off-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
      Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8ef659f1
    • Ursula Braun's avatar
      net/smc: propagate file from SMC to TCP socket · 07603b23
      Ursula Braun authored
      fcntl(fd, F_SETOWN, getpid()) selects the recipient of SIGURG signals
      that are delivered when out-of-band data arrives on socket fd.
      If an SMC socket program makes use of such an fcntl() call, it fails
      in case of fallback to TCP-mode. In case of fallback the traffic is
      processed with the internal TCP socket. Propagating field "file" from the
      SMC socket to the internal TCP socket fixes the issue.
      Reviewed-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
      Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      07603b23
    • Kangjie Lu's avatar
      net/smc: fix a NULL pointer dereference · e183d4e4
      Kangjie Lu authored
      In case alloc_ordered_workqueue fails, the fix returns NULL
      to avoid NULL pointer dereference.
      Signed-off-by: default avatarKangjie Lu <kjlu@umn.edu>
      Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e183d4e4
    • Karsten Graul's avatar
      net/smc: wait for pending work before clcsock release_sock · fd57770d
      Karsten Graul authored
      When the clcsock is already released using sock_release() and a pending
      smc_listen_work accesses the clcsock than that will fail. Solve this
      by canceling and waiting for the work to complete first. Because the
      work holds the sock_lock it must make sure that the lock is not hold
      before the new helper smc_clcsock_release() is invoked. And before the
      smc_listen_work starts working check if the parent listen socket is
      still valid, otherwise stop the work early.
      Signed-off-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
      Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fd57770d
    • Lorenzo Bianconi's avatar
      net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv · 988dc4a9
      Lorenzo Bianconi authored
      gue tunnels run iptunnel_pull_offloads on received skbs. This can
      determine a possible use-after-free accessing guehdr pointer since
      the packet will be 'uncloned' running pskb_expand_head if it is a
      cloned gso skb (e.g if the packet has been sent though a veth device)
      
      Fixes: a09a4c8d ("tunnels: Remove encapsulation offloads on decap")
      Signed-off-by: default avatarLorenzo Bianconi <lorenzo.bianconi@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      988dc4a9
    • Hoang Le's avatar
      tipc: missing entries in name table of publications · d1841533
      Hoang Le authored
      When binding multiple services with specific type 1Ki, 2Ki..,
      this leads to some entries in the name table of publications
      missing when listed out via 'tipc name show'.
      
      The problem is at identify zero last_type conditional provided
      via netlink. The first is initial 'type' when starting name table
      dummping. The second is continuously with zero type (node state
      service type). Then, lookup function failure to finding node state
      service type in next iteration.
      
      To solve this, adding more conditional to marked as dirty type and
      lookup correct service type for the next iteration instead of select
      the first service as initial 'type' zero.
      Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarHoang Le <hoang.h.le@dektech.com.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d1841533
    • Jason Wang's avatar
      vhost: reject zero size iova range · 813dbeb6
      Jason Wang authored
      We used to accept zero size iova range which will lead a infinite loop
      in translate_desc(). Fixing this by failing the request in this case.
      
      Reported-by: syzbot+d21e6e297322a900c128@syzkaller.appspotmail.com
      Fixes: 6b1e6cc7 ("vhost: new device IOTLB API")
      Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
      Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      813dbeb6
    • Jakub Kicinski's avatar
      net/tls: prevent bad memory access in tls_is_sk_tx_device_offloaded() · b4f47f38
      Jakub Kicinski authored
      Unlike '&&' operator, the '&' does not have short-circuit
      evaluation semantics.  IOW both sides of the operator always
      get evaluated.  Fix the wrong operator in
      tls_is_sk_tx_device_offloaded(), which would lead to
      out-of-bounds access for for non-full sockets.
      
      Fixes: 4799ac81 ("tls: Add rx inline crypto offload")
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Reviewed-by: default avatarDirk van der Merwe <dirk.vandermerwe@netronome.com>
      Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b4f47f38
    • Si-Wei Liu's avatar
      failover: allow name change on IFF_UP slave interfaces · 8065a779
      Si-Wei Liu authored
      When a netdev appears through hot plug then gets enslaved by a failover
      master that is already up and running, the slave will be opened
      right away after getting enslaved. Today there's a race that userspace
      (udev) may fail to rename the slave if the kernel (net_failover)
      opens the slave earlier than when the userspace rename happens.
      Unlike bond or team, the primary slave of failover can't be renamed by
      userspace ahead of time, since the kernel initiated auto-enslavement is
      unable to, or rather, is never meant to be synchronized with the rename
      request from userspace.
      
      As the failover slave interfaces are not designed to be operated
      directly by userspace apps: IP configuration, filter rules with
      regard to network traffic passing and etc., should all be done on master
      interface. In general, userspace apps only care about the
      name of master interface, while slave names are less important as long
      as admin users can see reliable names that may carry
      other information describing the netdev. For e.g., they can infer that
      "ens3nsby" is a standby slave of "ens3", while for a
      name like "eth0" they can't tell which master it belongs to.
      
      Historically the name of IFF_UP interface can't be changed because
      there might be admin script or management software that is already
      relying on such behavior and assumes that the slave name can't be
      changed once UP. But failover is special: with the in-kernel
      auto-enslavement mechanism, the userspace expectation for device
      enumeration and bring-up order is already broken. Previously initramfs
      and various userspace config tools were modified to bypass failover
      slaves because of auto-enslavement and duplicate MAC address. Similarly,
      in case that users care about seeing reliable slave name, the new type
      of failover slaves needs to be taken care of specifically in userspace
      anyway.
      
      It's less risky to lift up the rename restriction on failover slave
      which is already UP. Although it's possible this change may potentially
      break userspace component (most likely configuration scripts or
      management software) that assumes slave name can't be changed while
      UP, it's relatively a limited and controllable set among all userspace
      components, which can be fixed specifically to listen for the rename
      events on failover slaves. Userspace component interacting with slaves
      is expected to be changed to operate on failover master interface
      instead, as the failover slave is dynamic in nature which may come and
      go at any point.  The goal is to make the role of failover slaves less
      relevant, and userspace components should only deal with failover master
      in the long run.
      
      Fixes: 30c8bd5a ("net: Introduce generic failover module")
      Signed-off-by: default avatarSi-Wei Liu <si-wei.liu@oracle.com>
      Reviewed-by: default avatarLiran Alon <liran.alon@oracle.com>
      Acked-by: default avatarSridhar Samudrala <sridhar.samudrala@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8065a779