1. 31 Oct, 2019 10 commits
    • Eric Dumazet's avatar
      tcp: increase tcp_max_syn_backlog max value · 623d0c2d
      Eric Dumazet authored
      tcp_max_syn_backlog default value depends on memory size
      and TCP ehash size. Before this patch, the max value
      was 2048 [1], which is considered too small nowadays.
      
      Increase it to 4096 to match the recent SOMAXCONN change.
      
      [1] This is with TCP ehash size being capped to 524288 buckets.
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: Willy Tarreau <w@1wt.eu>
      Cc: Yue Cao <ycao009@ucr.edu>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      623d0c2d
    • Eric Dumazet's avatar
      net: increase SOMAXCONN to 4096 · 19f92a03
      Eric Dumazet authored
      SOMAXCONN is /proc/sys/net/core/somaxconn default value.
      
      It has been defined as 128 more than 20 years ago.
      
      Since it caps the listen() backlog values, the very small value has
      caused numerous problems over the years, and many people had
      to raise it on their hosts after beeing hit by problems.
      
      Google has been using 1024 for at least 15 years, and we increased
      this to 4096 after TCP listener rework has been completed, more than
      4 years ago. We got no complain of this change breaking any
      legacy application.
      
      Many applications indeed setup a TCP listener with listen(fd, -1);
      meaning they let the system select the backlog.
      
      Raising SOMAXCONN lowers chance of the port being unavailable under
      even small SYNFLOOD attack, and reduces possibilities of side channel
      vulnerabilities.
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: Willy Tarreau <w@1wt.eu>
      Cc: Yue Cao <ycao009@ucr.edu>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      19f92a03
    • Ido Schimmel's avatar
      netdevsim: Fix use-after-free during device dismantle · 6d6f0383
      Ido Schimmel authored
      Commit da58f90f ("netdevsim: Add devlink-trap support") added
      delayed work to netdevsim that periodically iterates over the registered
      netdevsim ports and reports various packet traps via devlink.
      
      While the delayed work takes the 'port_list_lock' mutex to protect
      against concurrent addition / deletion of ports, during device creation
      / dismantle ports are added / deleted without this lock, which can
      result in a use-after-free [1].
      
      Fix this by making sure that the ports list is always modified under the
      lock.
      
      [1]
      [   59.205543] ==================================================================
      [   59.207748] BUG: KASAN: use-after-free in nsim_dev_trap_report_work+0xa67/0xad0
      [   59.210247] Read of size 8 at addr ffff8883cbdd3398 by task kworker/3:1/38
      [   59.212584]
      [   59.213148] CPU: 3 PID: 38 Comm: kworker/3:1 Not tainted 5.4.0-rc3-custom-16119-ge6abb5f0261e #2013
      [   59.215896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20180724_192412-buildhw-07.phx2.fedoraproject.org-1.fc29 04/01/2014
      [   59.218384] Workqueue: events nsim_dev_trap_report_work
      [   59.219428] Call Trace:
      [   59.219924]  dump_stack+0xa9/0x10e
      [   59.220623]  print_address_description.constprop.4+0x21/0x340
      [   59.221976]  ? vprintk_func+0x66/0x240
      [   59.222752]  __kasan_report.cold.8+0x78/0x91
      [   59.223602]  ? nsim_dev_trap_report_work+0xa67/0xad0
      [   59.224603]  kasan_report+0xe/0x20
      [   59.225296]  nsim_dev_trap_report_work+0xa67/0xad0
      [   59.226435]  ? rcu_read_lock_sched_held+0xaf/0xe0
      [   59.227512]  ? trace_event_raw_event_rcu_quiescent_state_report+0x360/0x360
      [   59.228851]  process_one_work+0x98f/0x1760
      [   59.229684]  ? pwq_dec_nr_in_flight+0x330/0x330
      [   59.230656]  worker_thread+0x91/0xc40
      [   59.231587]  ? process_one_work+0x1760/0x1760
      [   59.232451]  kthread+0x34a/0x410
      [   59.233104]  ? __kthread_queue_delayed_work+0x240/0x240
      [   59.234141]  ret_from_fork+0x3a/0x50
      [   59.234982]
      [   59.235371] Allocated by task 187:
      [   59.236189]  save_stack+0x19/0x80
      [   59.236853]  __kasan_kmalloc.constprop.5+0xc1/0xd0
      [   59.237822]  kmem_cache_alloc_trace+0x14c/0x380
      [   59.238769]  __nsim_dev_port_add+0xaf/0x5c0
      [   59.239627]  nsim_dev_probe+0x4fc/0x1140
      [   59.240550]  really_probe+0x264/0xc00
      [   59.241418]  driver_probe_device+0x208/0x2e0
      [   59.242255]  __device_attach_driver+0x215/0x2d0
      [   59.243150]  bus_for_each_drv+0x154/0x1d0
      [   59.243944]  __device_attach+0x1ba/0x2b0
      [   59.244923]  bus_probe_device+0x1dd/0x290
      [   59.245805]  device_add+0xbac/0x1550
      [   59.246528]  new_device_store+0x1f4/0x400
      [   59.247306]  bus_attr_store+0x7b/0xa0
      [   59.248047]  sysfs_kf_write+0x10f/0x170
      [   59.248941]  kernfs_fop_write+0x283/0x430
      [   59.249843]  __vfs_write+0x81/0x100
      [   59.250546]  vfs_write+0x1ce/0x510
      [   59.251190]  ksys_write+0x104/0x200
      [   59.251873]  do_syscall_64+0xa4/0x4e0
      [   59.252642]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [   59.253837]
      [   59.254203] Freed by task 187:
      [   59.254811]  save_stack+0x19/0x80
      [   59.255463]  __kasan_slab_free+0x125/0x170
      [   59.256265]  kfree+0x100/0x440
      [   59.256870]  nsim_dev_remove+0x98/0x100
      [   59.257651]  nsim_bus_remove+0x16/0x20
      [   59.258382]  device_release_driver_internal+0x20b/0x4d0
      [   59.259588]  bus_remove_device+0x2e9/0x5a0
      [   59.260551]  device_del+0x410/0xad0
      [   59.263777]  device_unregister+0x26/0xc0
      [   59.264616]  nsim_bus_dev_del+0x16/0x60
      [   59.265381]  del_device_store+0x2d6/0x3c0
      [   59.266295]  bus_attr_store+0x7b/0xa0
      [   59.267192]  sysfs_kf_write+0x10f/0x170
      [   59.267960]  kernfs_fop_write+0x283/0x430
      [   59.268800]  __vfs_write+0x81/0x100
      [   59.269551]  vfs_write+0x1ce/0x510
      [   59.270252]  ksys_write+0x104/0x200
      [   59.270910]  do_syscall_64+0xa4/0x4e0
      [   59.271680]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [   59.272812]
      [   59.273211] The buggy address belongs to the object at ffff8883cbdd3200
      [   59.273211]  which belongs to the cache kmalloc-512 of size 512
      [   59.275838] The buggy address is located 408 bytes inside of
      [   59.275838]  512-byte region [ffff8883cbdd3200, ffff8883cbdd3400)
      [   59.278151] The buggy address belongs to the page:
      [   59.279215] page:ffffea000f2f7400 refcount:1 mapcount:0 mapping:ffff8883ecc0ce00 index:0x0 compound_mapcount: 0
      [   59.281449] flags: 0x200000000010200(slab|head)
      [   59.282356] raw: 0200000000010200 ffffea000f2f3a08 ffffea000f2fd608 ffff8883ecc0ce00
      [   59.283949] raw: 0000000000000000 0000000000150015 00000001ffffffff 0000000000000000
      [   59.285608] page dumped because: kasan: bad access detected
      [   59.286981]
      [   59.287337] Memory state around the buggy address:
      [   59.288310]  ffff8883cbdd3280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
      [   59.289763]  ffff8883cbdd3300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
      [   59.291452] >ffff8883cbdd3380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
      [   59.292945]                             ^
      [   59.293815]  ffff8883cbdd3400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
      [   59.295220]  ffff8883cbdd3480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
      [   59.296872] ==================================================================
      
      Fixes: da58f90f ("netdevsim: Add devlink-trap support")
      Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Reported-by: syzbot+9ed8f68ab30761f3678e@syzkaller.appspotmail.com
      Acked-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6d6f0383
    • David Howells's avatar
      rxrpc: Fix handling of last subpacket of jumbo packet · f9c32435
      David Howells authored
      When rxrpc_recvmsg_data() sets the return value to 1 because it's drained
      all the data for the last packet, it checks the last-packet flag on the
      whole packet - but this is wrong, since the last-packet flag is only set on
      the final subpacket of the last jumbo packet.  This means that a call that
      receives its last packet in a jumbo packet won't complete properly.
      
      Fix this by having rxrpc_locate_data() determine the last-packet state of
      the subpacket it's looking at and passing that back to the caller rather
      than having the caller look in the packet header.  The caller then needs to
      cache this in the rxrpc_call struct as rxrpc_locate_data() isn't then
      called again for this packet.
      
      Fixes: 248f219c ("rxrpc: Rewrite the data and ack handling code")
      Fixes: e2de6c40 ("rxrpc: Use info in skbuff instead of reparsing a jumbo packet")
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f9c32435
    • David S. Miller's avatar
      Merge tag 'mac80211-for-net-2019-10-31' of... · 5a7ec667
      David S. Miller authored
      Merge tag 'mac80211-for-net-2019-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
      
      Johannes Berg says:
      
      ====================
      Just two fixes:
       * HT operation is not allowed on channel 14 (Japan only)
       * netlink policy for nexthop attribute was wrong
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5a7ec667
    • David S. Miller's avatar
      Merge branch 'hv_netvsc-fix-error-handling-in-netvsc_attach-set_features' · 3da09663
      David S. Miller authored
      Haiyang Zhang says:
      
      ====================
      hv_netvsc: fix error handling in netvsc_attach/set_features
      
      The error handling code path in these functions are not correct.
      This patch set fixes them.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3da09663
    • Haiyang Zhang's avatar
      hv_netvsc: Fix error handling in netvsc_attach() · 719b85c3
      Haiyang Zhang authored
      If rndis_filter_open() fails, we need to remove the rndis device created
      in earlier steps, before returning an error code. Otherwise, the retry of
      netvsc_attach() from its callers will fail and hang.
      
      Fixes: 7b2ee50c ("hv_netvsc: common detach logic")
      Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      719b85c3
    • Haiyang Zhang's avatar
      hv_netvsc: Fix error handling in netvsc_set_features() · c4509a5a
      Haiyang Zhang authored
      When an error is returned by rndis_filter_set_offload_params(), we should
      still assign the unaffected features to ndev->features. Otherwise, these
      features will be missing.
      
      Fixes: d6792a5a ("hv_netvsc: Add handler for LRO setting change")
      Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c4509a5a
    • Vishal Kulkarni's avatar
      cxgb4: fix panic when attaching to ULD fail · fc89cc35
      Vishal Kulkarni authored
      Release resources when attaching to ULD fail. Otherwise, data
      mismatch is seen between LLD and ULD later on, which lead to
      kernel panic when accessing resources that should not even
      exist in the first place.
      
      Fixes: 94cdb8bb ("cxgb4: Add support for dynamic allocation of resources for ULD")
      Signed-off-by: default avatarShahjada Abul Husain <shahjada@chelsio.com>
      Signed-off-by: default avatarVishal Kulkarni <vishal@chelsio.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fc89cc35
    • Eric Dumazet's avatar
      net: annotate lockless accesses to sk->sk_napi_id · ee8d153d
      Eric Dumazet authored
      We already annotated most accesses to sk->sk_napi_id
      
      We missed sk_mark_napi_id() and sk_mark_napi_id_once()
      which might be called without socket lock held in UDP stack.
      
      KCSAN reported :
      BUG: KCSAN: data-race in udpv6_queue_rcv_one_skb / udpv6_queue_rcv_one_skb
      
      write to 0xffff888121c6d108 of 4 bytes by interrupt on cpu 0:
       sk_mark_napi_id include/net/busy_poll.h:125 [inline]
       __udpv6_queue_rcv_skb net/ipv6/udp.c:571 [inline]
       udpv6_queue_rcv_one_skb+0x70c/0xb40 net/ipv6/udp.c:672
       udpv6_queue_rcv_skb+0xb5/0x400 net/ipv6/udp.c:689
       udp6_unicast_rcv_skb.isra.0+0xd7/0x180 net/ipv6/udp.c:832
       __udp6_lib_rcv+0x69c/0x1770 net/ipv6/udp.c:913
       udpv6_rcv+0x2b/0x40 net/ipv6/udp.c:1015
       ip6_protocol_deliver_rcu+0x22a/0xbe0 net/ipv6/ip6_input.c:409
       ip6_input_finish+0x30/0x50 net/ipv6/ip6_input.c:450
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ip6_input+0x177/0x190 net/ipv6/ip6_input.c:459
       dst_input include/net/dst.h:442 [inline]
       ip6_rcv_finish+0x110/0x140 net/ipv6/ip6_input.c:76
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ipv6_rcv+0x1a1/0x1b0 net/ipv6/ip6_input.c:284
       __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5010
       __netif_receive_skb+0x37/0xf0 net/core/dev.c:5124
       process_backlog+0x1d3/0x420 net/core/dev.c:5955
       napi_poll net/core/dev.c:6392 [inline]
       net_rx_action+0x3ae/0xa90 net/core/dev.c:6460
      
      write to 0xffff888121c6d108 of 4 bytes by interrupt on cpu 1:
       sk_mark_napi_id include/net/busy_poll.h:125 [inline]
       __udpv6_queue_rcv_skb net/ipv6/udp.c:571 [inline]
       udpv6_queue_rcv_one_skb+0x70c/0xb40 net/ipv6/udp.c:672
       udpv6_queue_rcv_skb+0xb5/0x400 net/ipv6/udp.c:689
       udp6_unicast_rcv_skb.isra.0+0xd7/0x180 net/ipv6/udp.c:832
       __udp6_lib_rcv+0x69c/0x1770 net/ipv6/udp.c:913
       udpv6_rcv+0x2b/0x40 net/ipv6/udp.c:1015
       ip6_protocol_deliver_rcu+0x22a/0xbe0 net/ipv6/ip6_input.c:409
       ip6_input_finish+0x30/0x50 net/ipv6/ip6_input.c:450
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ip6_input+0x177/0x190 net/ipv6/ip6_input.c:459
       dst_input include/net/dst.h:442 [inline]
       ip6_rcv_finish+0x110/0x140 net/ipv6/ip6_input.c:76
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ipv6_rcv+0x1a1/0x1b0 net/ipv6/ip6_input.c:284
       __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5010
       __netif_receive_skb+0x37/0xf0 net/core/dev.c:5124
       process_backlog+0x1d3/0x420 net/core/dev.c:5955
      
      Reported by Kernel Concurrency Sanitizer on:
      CPU: 1 PID: 10890 Comm: syz-executor.0 Not tainted 5.4.0-rc3+ #0
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      
      Fixes: e68b6e50 ("udp: enable busy polling for all sockets")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ee8d153d
  2. 30 Oct, 2019 16 commits
    • Eric Dumazet's avatar
      net: annotate accesses to sk->sk_incoming_cpu · 7170a977
      Eric Dumazet authored
      This socket field can be read and written by concurrent cpus.
      
      Use READ_ONCE() and WRITE_ONCE() annotations to document this,
      and avoid some compiler 'optimizations'.
      
      KCSAN reported :
      
      BUG: KCSAN: data-race in tcp_v4_rcv / tcp_v4_rcv
      
      write to 0xffff88812220763c of 4 bytes by interrupt on cpu 0:
       sk_incoming_cpu_update include/net/sock.h:953 [inline]
       tcp_v4_rcv+0x1b3c/0x1bb0 net/ipv4/tcp_ipv4.c:1934
       ip_protocol_deliver_rcu+0x4d/0x420 net/ipv4/ip_input.c:204
       ip_local_deliver_finish+0x110/0x140 net/ipv4/ip_input.c:231
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ip_local_deliver+0x133/0x210 net/ipv4/ip_input.c:252
       dst_input include/net/dst.h:442 [inline]
       ip_rcv_finish+0x121/0x160 net/ipv4/ip_input.c:413
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ip_rcv+0x18f/0x1a0 net/ipv4/ip_input.c:523
       __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5010
       __netif_receive_skb+0x37/0xf0 net/core/dev.c:5124
       process_backlog+0x1d3/0x420 net/core/dev.c:5955
       napi_poll net/core/dev.c:6392 [inline]
       net_rx_action+0x3ae/0xa90 net/core/dev.c:6460
       __do_softirq+0x115/0x33f kernel/softirq.c:292
       do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
       do_softirq.part.0+0x6b/0x80 kernel/softirq.c:337
       do_softirq kernel/softirq.c:329 [inline]
       __local_bh_enable_ip+0x76/0x80 kernel/softirq.c:189
      
      read to 0xffff88812220763c of 4 bytes by interrupt on cpu 1:
       sk_incoming_cpu_update include/net/sock.h:952 [inline]
       tcp_v4_rcv+0x181a/0x1bb0 net/ipv4/tcp_ipv4.c:1934
       ip_protocol_deliver_rcu+0x4d/0x420 net/ipv4/ip_input.c:204
       ip_local_deliver_finish+0x110/0x140 net/ipv4/ip_input.c:231
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ip_local_deliver+0x133/0x210 net/ipv4/ip_input.c:252
       dst_input include/net/dst.h:442 [inline]
       ip_rcv_finish+0x121/0x160 net/ipv4/ip_input.c:413
       NF_HOOK include/linux/netfilter.h:305 [inline]
       NF_HOOK include/linux/netfilter.h:299 [inline]
       ip_rcv+0x18f/0x1a0 net/ipv4/ip_input.c:523
       __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5010
       __netif_receive_skb+0x37/0xf0 net/core/dev.c:5124
       process_backlog+0x1d3/0x420 net/core/dev.c:5955
       napi_poll net/core/dev.c:6392 [inline]
       net_rx_action+0x3ae/0xa90 net/core/dev.c:6460
       __do_softirq+0x115/0x33f kernel/softirq.c:292
       run_ksoftirqd+0x46/0x60 kernel/softirq.c:603
       smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165
      
      Reported by Kernel Concurrency Sanitizer on:
      CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7170a977
    • Jiri Pirko's avatar
      mlxsw: core: Unpublish devlink parameters during reload · b7265a0d
      Jiri Pirko authored
      The devlink parameter "acl_region_rehash_interval" is a runtime
      parameter whose value is stored in a dynamically allocated memory. While
      reloading the driver, this memory is freed and then allocated again. A
      use-after-free might happen if during this time frame someone tries to
      retrieve its value.
      
      Since commit 070c63f2 ("net: devlink: allow to change namespaces
      during reload") the use-after-free can be reliably triggered when
      reloading the driver into a namespace, as after freeing the memory (via
      reload_down() callback) all the parameters are notified.
      
      Fix this by unpublishing and then re-publishing the parameters during
      reload.
      
      Fixes: 98bbf70c ("mlxsw: spectrum: add "acl_region_rehash_interval" devlink param")
      Fixes: 7c62cfb8 ("devlink: publish params only after driver init is done")
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b7265a0d
    • Sudarsana Reddy Kalluru's avatar
      qed: Optimize execution time for nvm attributes configuration. · c63b0968
      Sudarsana Reddy Kalluru authored
      Current implementation for nvm_attr configuration instructs the management
      FW to load/unload the nvm-cfg image for each user-provided attribute in
      the input file. This consumes lot of cycles even for few tens of
      attributes.
      This patch updates the implementation to perform load/commit of the config
      for every 50 attributes. After loading the nvm-image, MFW expects that
      config should be committed in a predefined timer value (5 sec), hence it's
      not possible to write large number of attributes in a single load/commit
      window. Hence performing the commits in chunks.
      
      Fixes: 0dabbe1b ("qed: Add driver API for flashing the config attributes.")
      Signed-off-by: default avatarSudarsana Reddy Kalluru <skalluru@marvell.com>
      Signed-off-by: default avatarAriel Elior <aelior@marvell.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c63b0968
    • Taehee Yoo's avatar
      vxlan: fix unexpected failure of vxlan_changelink() · c6761cf5
      Taehee Yoo authored
      After commit 0ce1822c ("vxlan: add adjacent link to limit depth
      level"), vxlan_changelink() could fail because of
      netdev_adjacent_change_prepare().
      netdev_adjacent_change_prepare() returns -EEXIST when old lower device
      and new lower device are same.
      (old lower device is "dst->remote_dev" and new lower device is "lowerdev")
      So, before calling it, lowerdev should be NULL if these devices are same.
      
      Test command1:
          ip link add dummy0 type dummy
          ip link add vxlan0 type vxlan dev dummy0 dstport 4789 vni 1
          ip link set vxlan0 type vxlan ttl 5
          RTNETLINK answers: File exists
      Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
      Fixes: 0ce1822c ("vxlan: add adjacent link to limit depth level")
      Signed-off-by: default avatarTaehee Yoo <ap420073@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c6761cf5
    • Colin Ian King's avatar
      qed: fix spelling mistake "queuess" -> "queues" · dc99da4f
      Colin Ian King authored
      There is a spelling misake in a DP_NOTICE message. Fix it.
      Signed-off-by: default avatarColin Ian King <colin.king@canonical.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dc99da4f
    • Markus Theil's avatar
      nl80211: fix validation of mesh path nexthop · 1fab1b89
      Markus Theil authored
      Mesh path nexthop should be a ethernet address, but current validation
      checks against 4 byte integers.
      
      Cc: stable@vger.kernel.org
      Fixes: 2ec600d6 ("nl80211/cfg80211: support for mesh, sta dumping")
      Signed-off-by: default avatarMarkus Theil <markus.theil@tu-ilmenau.de>
      Link: https://lore.kernel.org/r/20191029093003.10355-1-markus.theil@tu-ilmenau.deSigned-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      1fab1b89
    • Masashi Honma's avatar
      nl80211: Disallow setting of HT for channel 14 · ec649fed
      Masashi Honma authored
      This patch disables setting of HT20 and more for channel 14 because
      the channel is only for IEEE 802.11b.
      
      The patch for net/wireless/util.c was unit-tested.
      
      The patch for net/wireless/chan.c was tested with iw command.
      
      Before this patch.
      $ sudo iw dev <ifname> set channel 14 HT20
      $
      
      After this patch.
      $ sudo iw dev <ifname> set channel 14 HT20
      kernel reports: invalid channel definition
      command failed: Invalid argument (-22)
      $
      Signed-off-by: default avatarMasashi Honma <masashi.honma@gmail.com>
      Link: https://lore.kernel.org/r/20191021075045.2719-1-masashi.honma@gmail.com
      [clean up the code, use != instead of equivalent >]
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      ec649fed
    • David S. Miller's avatar
      Merge tag 'mlx5-fixes-2019-10-24' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux · 6f74a55d
      David S. Miller authored
      Saeed Mahameed says:
      
      ====================
      Mellanox, mlx5 fixes 2019-10-24
      
      This series introduces misc fixes to mlx5 driver.
      
      v1->v2:
       - Dropped the kTLS counter documentation patch, Tariq will fix it and
         send it later.
       - Added a new fix for link speed mode reporting.
        ('net/mlx5e: Initialize link modes bitmap on stack')
      
      For -stable v4.14
        ('net/mlx5e: Fix handling of compressed CQEs in case of low NAPI budget')
      
      For -stable v4.19
        ('net/mlx5e: Fix ethtool self test: link speed')
      
      For -stable v5.2
        ('net/mlx5: Fix flow counter list auto bits struct')
        ('net/mlx5: Fix rtable reference leak')
      
      For -stable v5.3
        ('net/mlx5e: Remove incorrect match criteria assignment line')
        ('net/mlx5e: Determine source port properly for vlan push action')
        ('net/mlx5e: Initialize link modes bitmap on stack')
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6f74a55d
    • Nikolay Aleksandrov's avatar
      net: rtnetlink: fix a typo fbd -> fdb · 8b73018f
      Nikolay Aleksandrov authored
      A simple typo fix in the nl error message (fbd -> fdb).
      
      CC: David Ahern <dsahern@gmail.com>
      Fixes: 8c6e137f ("rtnetlink: Update rtnl_fdb_dump for strict data checking")
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8b73018f
    • Ursula Braun's avatar
      net/smc: fix refcounting for non-blocking connect() · 301428ea
      Ursula Braun authored
      If a nonblocking socket is immediately closed after connect(),
      the connect worker may not have started. This results in a refcount
      problem, since sock_hold() is called from the connect worker.
      This patch moves the sock_hold in front of the connect worker
      scheduling.
      
      Reported-by: syzbot+4c063e6dea39e4b79f29@syzkaller.appspotmail.com
      Fixes: 50717a37 ("net/smc: nonblocking connect rework")
      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>
      301428ea
    • Taehee Yoo's avatar
      bonding: fix using uninitialized mode_lock · ad9bd8da
      Taehee Yoo authored
      When a bonding interface is being created, it setups its mode and options.
      At that moment, it uses mode_lock so mode_lock should be initialized
      before that moment.
      
      rtnl_newlink()
      	rtnl_create_link()
      		alloc_netdev_mqs()
      			->setup() //bond_setup()
      	->newlink //bond_newlink
      		bond_changelink()
      		register_netdevice()
      			->ndo_init() //bond_init()
      
      After commit 089bca2c ("bonding: use dynamic lockdep key instead of
      subclass"), mode_lock is initialized in bond_init().
      So in the bond_changelink(), un-initialized mode_lock can be used.
      mode_lock should be initialized in bond_setup().
      This patch partially reverts commit 089bca2c ("bonding: use dynamic
      lockdep key instead of subclass")
      
      Test command:
          ip link add bond0 type bond mode 802.3ad lacp_rate 0
      
      Splat looks like:
      [   60.615127] INFO: trying to register non-static key.
      [   60.615900] the code is fine but needs lockdep annotation.
      [   60.616697] turning off the locking correctness validator.
      [   60.617490] CPU: 1 PID: 957 Comm: ip Not tainted 5.4.0-rc3+ #109
      [   60.618350] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
      [   60.619481] Call Trace:
      [   60.619918]  dump_stack+0x7c/0xbb
      [   60.620453]  register_lock_class+0x1215/0x14d0
      [   60.621131]  ? alloc_netdev_mqs+0x7b3/0xcc0
      [   60.621771]  ? is_bpf_text_address+0x86/0xf0
      [   60.622416]  ? is_dynamic_key+0x230/0x230
      [   60.623032]  ? unwind_get_return_address+0x5f/0xa0
      [   60.623757]  ? create_prof_cpu_mask+0x20/0x20
      [   60.624408]  ? arch_stack_walk+0x83/0xb0
      [   60.625023]  __lock_acquire+0xd8/0x3de0
      [   60.625616]  ? stack_trace_save+0x82/0xb0
      [   60.626225]  ? stack_trace_consume_entry+0x160/0x160
      [   60.626957]  ? deactivate_slab.isra.80+0x2c5/0x800
      [   60.627668]  ? register_lock_class+0x14d0/0x14d0
      [   60.628380]  ? alloc_netdev_mqs+0x7b3/0xcc0
      [   60.629020]  ? save_stack+0x69/0x80
      [   60.629574]  ? save_stack+0x19/0x80
      [   60.630121]  ? __kasan_kmalloc.constprop.4+0xa0/0xd0
      [   60.630859]  ? __kmalloc_node+0x16f/0x480
      [   60.631472]  ? alloc_netdev_mqs+0x7b3/0xcc0
      [   60.632121]  ? rtnl_create_link+0x2ed/0xad0
      [   60.634388]  ? __rtnl_newlink+0xad4/0x11b0
      [   60.635024]  lock_acquire+0x164/0x3b0
      [   60.635608]  ? bond_3ad_update_lacp_rate+0x91/0x200 [bonding]
      [   60.636463]  _raw_spin_lock_bh+0x38/0x70
      [   60.637084]  ? bond_3ad_update_lacp_rate+0x91/0x200 [bonding]
      [   60.637930]  bond_3ad_update_lacp_rate+0x91/0x200 [bonding]
      [   60.638753]  ? bond_3ad_lacpdu_recv+0xb30/0xb30 [bonding]
      [   60.639552]  ? bond_opt_get_val+0x180/0x180 [bonding]
      [   60.640307]  ? ___slab_alloc+0x5aa/0x610
      [   60.640925]  bond_option_lacp_rate_set+0x71/0x140 [bonding]
      [   60.641751]  __bond_opt_set+0x1ff/0xbb0 [bonding]
      [   60.643217]  ? kasan_unpoison_shadow+0x30/0x40
      [   60.643924]  bond_changelink+0x9a4/0x1700 [bonding]
      [   60.644653]  ? memset+0x1f/0x40
      [   60.742941]  ? bond_slave_changelink+0x1a0/0x1a0 [bonding]
      [   60.752694]  ? alloc_netdev_mqs+0x8ea/0xcc0
      [   60.753330]  ? rtnl_create_link+0x2ed/0xad0
      [   60.753964]  bond_newlink+0x1e/0x60 [bonding]
      [   60.754612]  __rtnl_newlink+0xb9f/0x11b0
      [ ... ]
      
      Reported-by: syzbot+8da67f407bcba2c72e6e@syzkaller.appspotmail.com
      Reported-by: syzbot+0d083911ab18b710da71@syzkaller.appspotmail.com
      Fixes: 089bca2c ("bonding: use dynamic lockdep key instead of subclass")
      Signed-off-by: default avatarTaehee Yoo <ap420073@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ad9bd8da
    • Anson Huang's avatar
      net: fec_ptp: Use platform_get_irq_xxx_optional() to avoid error message · b86bcb29
      Anson Huang authored
      Use platform_get_irq_byname_optional() and platform_get_irq_optional()
      instead of platform_get_irq_byname() and platform_get_irq() for optional
      IRQs to avoid below error message during probe:
      
      [    0.795803] fec 30be0000.ethernet: IRQ pps not found
      [    0.800787] fec 30be0000.ethernet: IRQ index 3 not found
      Signed-off-by: default avatarAnson Huang <Anson.Huang@nxp.com>
      Acked-by: default avatarFugang Duan <fugang.duan@nxp.com>
      Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b86bcb29
    • Anson Huang's avatar
      net: fec_main: Use platform_get_irq_byname_optional() to avoid error message · 3b56be21
      Anson Huang authored
      Failed to get irq using name is NOT fatal as driver will use index
      to get irq instead, use platform_get_irq_byname_optional() instead
      of platform_get_irq_byname() to avoid below error message during
      probe:
      
      [    0.819312] fec 30be0000.ethernet: IRQ int0 not found
      [    0.824433] fec 30be0000.ethernet: IRQ int1 not found
      [    0.829539] fec 30be0000.ethernet: IRQ int2 not found
      Signed-off-by: default avatarAnson Huang <Anson.Huang@nxp.com>
      Acked-by: default avatarFugang Duan <fugang.duan@nxp.com>
      Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3b56be21
    • Jakub Kicinski's avatar
      MAINTAINERS: remove Dave Watson as TLS maintainer · f9f29338
      Jakub Kicinski authored
      Dave's Facebook email address is not working, and my attempts
      to contact him are failing. Let's remove it to trim down the
      list of TLS maintainers.
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f9f29338
    • Xin Long's avatar
      vxlan: check tun_info options_len properly · eadf52cf
      Xin Long authored
      This patch is to improve the tun_info options_len by dropping
      the skb when TUNNEL_VXLAN_OPT is set but options_len is less
      than vxlan_metadata. This can void a potential out-of-bounds
      access on ip_tun_info.
      
      Fixes: ee122c79 ("vxlan: Flow based tunneling")
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      eadf52cf
    • Xin Long's avatar
      erspan: fix the tun_info options_len check for erspan · 2eb8d6d2
      Xin Long authored
      The check for !md doens't really work for ip_tunnel_info_opts(info) which
      only does info + 1. Also to avoid out-of-bounds access on info, it should
      ensure options_len is not less than erspan_metadata in both erspan_xmit()
      and ip6erspan_tunnel_xmit().
      
      Fixes: 1a66a836 ("gre: add collect_md mode to ERSPAN tunnel")
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2eb8d6d2
  3. 29 Oct, 2019 14 commits
    • Jiangfeng Xiao's avatar
      net: hisilicon: Fix ping latency when deal with high throughput · e56bd641
      Jiangfeng Xiao authored
      This is due to error in over budget processing.
      When dealing with high throughput, the used buffers
      that exceeds the budget is not cleaned up. In addition,
      it takes a lot of cycles to clean up the used buffer,
      and then the buffer where the valid data is located can take effect.
      Signed-off-by: default avatarJiangfeng Xiao <xiaojiangfeng@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e56bd641
    • Eran Ben Elisha's avatar
      net/mlx4_core: Dynamically set guaranteed amount of counters per VF · e19868ef
      Eran Ben Elisha authored
      Prior to this patch, the amount of counters guaranteed per VF in the
      resource tracker was MLX4_VF_COUNTERS_PER_PORT * MLX4_MAX_PORTS. It was
      set regardless if the VF was single or dual port.
      This caused several VFs to have no guaranteed counters although the
      system could satisfy their request.
      
      The fix is to dynamically guarantee counters, based on each VF
      specification.
      
      Fixes: 9de92c60 ("net/mlx4_core: Adjust counter grant policy in the resource tracker")
      Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e19868ef
    • Aya Levin's avatar
      net/mlx5e: Initialize on stack link modes bitmap · 926b37f7
      Aya Levin authored
      Initialize link modes bitmap on stack before using it, otherwise the
      outcome of ethtool set link ksettings might have unexpected values.
      
      Fixes: 4b95840a ("net/mlx5e: Fix matching of speed to PRM link modes")
      Signed-off-by: default avatarAya Levin <ayal@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      926b37f7
    • Aya Levin's avatar
      net/mlx5e: Fix ethtool self test: link speed · 534e7366
      Aya Levin authored
      Ethtool self test contains a test for link speed. This test reads the
      PTYS register and determines whether the current speed is valid or not.
      Change current implementation to use the function mlx5e_port_linkspeed()
      that does the same check and fails when speed is invalid. This code
      redundancy lead to a bug when mlx5e_port_linkspeed() was updated with
      expended speeds and the self test was not.
      
      Fixes: 2c81bfd5 ("net/mlx5e: Move port speed code from en_ethtool.c to en/port.c")
      Signed-off-by: default avatarAya Levin <ayal@mellanox.com>
      Reviewed-by: default avatarMoshe Shemesh <moshe@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      534e7366
    • Maxim Mikityanskiy's avatar
      net/mlx5e: Fix handling of compressed CQEs in case of low NAPI budget · 9df86bdb
      Maxim Mikityanskiy authored
      When CQE compression is enabled, compressed CQEs use the following
      structure: a title is followed by one or many blocks, each containing 8
      mini CQEs (except the last, which may contain fewer mini CQEs).
      
      Due to NAPI budget restriction, a complete structure is not always
      parsed in one NAPI run, and some blocks with mini CQEs may be deferred
      to the next NAPI poll call - we have the mlx5e_decompress_cqes_cont call
      in the beginning of mlx5e_poll_rx_cq. However, if the budget is
      extremely low, some blocks may be left even after that, but the code
      that follows the mlx5e_decompress_cqes_cont call doesn't check it and
      assumes that a new CQE begins, which may not be the case. In such cases,
      random memory corruptions occur.
      
      An extremely low NAPI budget of 8 is used when busy_poll or busy_read is
      active.
      
      This commit adds a check to make sure that the previous compressed CQE
      has been completely parsed after mlx5e_decompress_cqes_cont, otherwise
      it prevents a new CQE from being fetched in the middle of a compressed
      CQE.
      
      This commit fixes random crashes in __build_skb, __page_pool_put_page
      and other not-related-directly places, that used to happen when both CQE
      compression and busy_poll/busy_read were enabled.
      
      Fixes: 7219ab34 ("net/mlx5e: CQE compression")
      Signed-off-by: default avatarMaxim Mikityanskiy <maximmi@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      9df86bdb
    • Vlad Buslov's avatar
      net/mlx5e: Don't store direct pointer to action's tunnel info · 2a4b6526
      Vlad Buslov authored
      Geneve implementation changed mlx5 tc to user direct pointer to tunnel_key
      action's internal struct ip_tunnel_info instance. However, this leads to
      use-after-free error when initial filter that caused creation of new encap
      entry is deleted or when tunnel_key action is manually overwritten through
      action API. Moreover, with recent TC offloads API unlocking change struct
      flow_action_entry->tunnel point to temporal copy of tunnel info that is
      deallocated after filter is offloaded to hardware which causes bug to
      reproduce every time new filter is attached to existing encap entry with
      following KASAN bug:
      
      [  314.885555] ==================================================================
      [  314.886641] BUG: KASAN: use-after-free in memcmp+0x2c/0x60
      [  314.886864] Read of size 1 at addr ffff88886c746280 by task tc/2682
      
      [  314.887179] CPU: 22 PID: 2682 Comm: tc Not tainted 5.3.0-rc7+ #703
      [  314.887188] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017
      [  314.887195] Call Trace:
      [  314.887215]  dump_stack+0x9a/0xf0
      [  314.887236]  print_address_description+0x67/0x323
      [  314.887248]  ? memcmp+0x2c/0x60
      [  314.887257]  ? memcmp+0x2c/0x60
      [  314.887272]  __kasan_report.cold+0x1a/0x3d
      [  314.887474]  ? __mlx5e_tc_del_fdb_peer_flow+0x100/0x1b0 [mlx5_core]
      [  314.887484]  ? memcmp+0x2c/0x60
      [  314.887509]  kasan_report+0xe/0x12
      [  314.887521]  memcmp+0x2c/0x60
      [  314.887662]  mlx5e_tc_add_fdb_flow+0x51b/0xbe0 [mlx5_core]
      [  314.887838]  ? mlx5e_encap_take+0x110/0x110 [mlx5_core]
      [  314.887902]  ? lockdep_init_map+0x87/0x2c0
      [  314.887924]  ? __init_waitqueue_head+0x4f/0x60
      [  314.888062]  ? mlx5e_alloc_flow.isra.0+0x18c/0x1c0 [mlx5_core]
      [  314.888207]  __mlx5e_add_fdb_flow+0x2d7/0x440 [mlx5_core]
      [  314.888359]  ? mlx5e_tc_update_neigh_used_value+0x6f0/0x6f0 [mlx5_core]
      [  314.888374]  ? match_held_lock+0x2e/0x240
      [  314.888537]  mlx5e_configure_flower+0x830/0x16a0 [mlx5_core]
      [  314.888702]  ? __mlx5e_add_fdb_flow+0x440/0x440 [mlx5_core]
      [  314.888713]  ? down_read+0x118/0x2c0
      [  314.888728]  ? down_read_killable+0x300/0x300
      [  314.888882]  ? mlx5e_rep_get_ethtool_stats+0x180/0x180 [mlx5_core]
      [  314.888899]  tc_setup_cb_add+0x127/0x270
      [  314.888937]  fl_hw_replace_filter+0x2ac/0x380 [cls_flower]
      [  314.888976]  ? fl_hw_destroy_filter+0x1b0/0x1b0 [cls_flower]
      [  314.888990]  ? fl_change+0xbcf/0x27ef [cls_flower]
      [  314.889030]  ? fl_change+0xa57/0x27ef [cls_flower]
      [  314.889069]  fl_change+0x16bd/0x27ef [cls_flower]
      [  314.889135]  ? __rhashtable_insert_fast.constprop.0+0xa00/0xa00 [cls_flower]
      [  314.889167]  ? __radix_tree_lookup+0xa4/0x130
      [  314.889200]  ? fl_get+0x169/0x240 [cls_flower]
      [  314.889218]  ? fl_walk+0x230/0x230 [cls_flower]
      [  314.889249]  tc_new_tfilter+0x5e1/0xd40
      [  314.889281]  ? __rhashtable_insert_fast.constprop.0+0xa00/0xa00 [cls_flower]
      [  314.889309]  ? tc_del_tfilter+0xa30/0xa30
      [  314.889335]  ? __lock_acquire+0x5b5/0x2460
      [  314.889378]  ? find_held_lock+0x85/0xa0
      [  314.889442]  ? tc_del_tfilter+0xa30/0xa30
      [  314.889465]  rtnetlink_rcv_msg+0x4ab/0x5f0
      [  314.889488]  ? rtnl_dellink+0x490/0x490
      [  314.889518]  ? lockdep_hardirqs_on+0x260/0x260
      [  314.889538]  ? netlink_deliver_tap+0xab/0x5a0
      [  314.889550]  ? match_held_lock+0x1b/0x240
      [  314.889575]  netlink_rcv_skb+0xd0/0x200
      [  314.889588]  ? rtnl_dellink+0x490/0x490
      [  314.889605]  ? netlink_ack+0x440/0x440
      [  314.889635]  ? netlink_deliver_tap+0x161/0x5a0
      [  314.889648]  ? lock_downgrade+0x360/0x360
      [  314.889657]  ? lock_acquire+0xe5/0x210
      [  314.889686]  netlink_unicast+0x296/0x350
      [  314.889707]  ? netlink_attachskb+0x390/0x390
      [  314.889726]  ? _copy_from_iter_full+0xe0/0x3a0
      [  314.889738]  ? __virt_addr_valid+0xbb/0x130
      [  314.889771]  netlink_sendmsg+0x394/0x600
      [  314.889800]  ? netlink_unicast+0x350/0x350
      [  314.889817]  ? move_addr_to_kernel.part.0+0x90/0x90
      [  314.889852]  ? netlink_unicast+0x350/0x350
      [  314.889872]  sock_sendmsg+0x96/0xa0
      [  314.889891]  ___sys_sendmsg+0x482/0x520
      [  314.889919]  ? copy_msghdr_from_user+0x250/0x250
      [  314.889930]  ? __fput+0x1fa/0x390
      [  314.889941]  ? task_work_run+0xb7/0xf0
      [  314.889957]  ? exit_to_usermode_loop+0x117/0x120
      [  314.889972]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [  314.889982]  ? do_syscall_64+0x74/0xe0
      [  314.889992]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [  314.890012]  ? mark_lock+0xac/0x9a0
      [  314.890028]  ? __lock_acquire+0x5b5/0x2460
      [  314.890053]  ? mark_lock+0xac/0x9a0
      [  314.890083]  ? __lock_acquire+0x5b5/0x2460
      [  314.890112]  ? match_held_lock+0x1b/0x240
      [  314.890144]  ? __fget_light+0xa1/0xf0
      [  314.890166]  ? sockfd_lookup_light+0x91/0xb0
      [  314.890187]  __sys_sendmsg+0xba/0x130
      [  314.890201]  ? __sys_sendmsg_sock+0xb0/0xb0
      [  314.890225]  ? __blkcg_punt_bio_submit+0xd0/0xd0
      [  314.890264]  ? lockdep_hardirqs_off+0xbe/0x100
      [  314.890274]  ? mark_held_locks+0x24/0x90
      [  314.890286]  ? do_syscall_64+0x1e/0xe0
      [  314.890308]  do_syscall_64+0x74/0xe0
      [  314.890325]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [  314.890336] RIP: 0033:0x7f00ca33d7b8
      [  314.890348] Code: 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 65 8f 0c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 89 5
      4
      [  314.890356] RSP: 002b:00007ffea2983928 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
      [  314.890369] RAX: ffffffffffffffda RBX: 000000005d777d5b RCX: 00007f00ca33d7b8
      [  314.890377] RDX: 0000000000000000 RSI: 00007ffea2983990 RDI: 0000000000000003
      [  314.890384] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000006
      [  314.890392] R10: 0000000000404eda R11: 0000000000000246 R12: 0000000000000001
      [  314.890400] R13: 000000000047f640 R14: 00007ffea2987b58 R15: 0000000000000021
      
      [  314.890529] Allocated by task 2687:
      [  314.890684]  save_stack+0x1b/0x80
      [  314.890694]  __kasan_kmalloc.constprop.0+0xc2/0xd0
      [  314.890705]  __kmalloc_track_caller+0x102/0x340
      [  314.890721]  kmemdup+0x1d/0x40
      [  314.890730]  tc_setup_flow_action+0x731/0x2c27
      [  314.890743]  fl_hw_replace_filter+0x23b/0x380 [cls_flower]
      [  314.890756]  fl_change+0x16bd/0x27ef [cls_flower]
      [  314.890765]  tc_new_tfilter+0x5e1/0xd40
      [  314.890776]  rtnetlink_rcv_msg+0x4ab/0x5f0
      [  314.890786]  netlink_rcv_skb+0xd0/0x200
      [  314.890796]  netlink_unicast+0x296/0x350
      [  314.890805]  netlink_sendmsg+0x394/0x600
      [  314.890815]  sock_sendmsg+0x96/0xa0
      [  314.890825]  ___sys_sendmsg+0x482/0x520
      [  314.890834]  __sys_sendmsg+0xba/0x130
      [  314.890844]  do_syscall_64+0x74/0xe0
      [  314.890854]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      
      [  314.890937] Freed by task 2687:
      [  314.891076]  save_stack+0x1b/0x80
      [  314.891086]  __kasan_slab_free+0x12c/0x170
      [  314.891095]  kfree+0xeb/0x2f0
      [  314.891106]  tc_cleanup_flow_action+0x69/0xa0
      [  314.891119]  fl_hw_replace_filter+0x2c5/0x380 [cls_flower]
      [  314.891132]  fl_change+0x16bd/0x27ef [cls_flower]
      [  314.891140]  tc_new_tfilter+0x5e1/0xd40
      [  314.891151]  rtnetlink_rcv_msg+0x4ab/0x5f0
      [  314.891161]  netlink_rcv_skb+0xd0/0x200
      [  314.891170]  netlink_unicast+0x296/0x350
      [  314.891180]  netlink_sendmsg+0x394/0x600
      [  314.891190]  sock_sendmsg+0x96/0xa0
      [  314.891200]  ___sys_sendmsg+0x482/0x520
      [  314.891208]  __sys_sendmsg+0xba/0x130
      [  314.891218]  do_syscall_64+0x74/0xe0
      [  314.891228]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      
      [  314.891315] The buggy address belongs to the object at ffff88886c746280
                      which belongs to the cache kmalloc-96 of size 96
      [  314.891762] The buggy address is located 0 bytes inside of
                      96-byte region [ffff88886c746280, ffff88886c7462e0)
      [  314.892196] The buggy address belongs to the page:
      [  314.892387] page:ffffea0021b1d180 refcount:1 mapcount:0 mapping:ffff88835d00ef80 index:0x0
      [  314.892398] flags: 0x57ffffc0000200(slab)
      [  314.892413] raw: 0057ffffc0000200 ffffea00219e0340 0000000800000008 ffff88835d00ef80
      [  314.892423] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
      [  314.892430] page dumped because: kasan: bad access detected
      
      [  314.892515] Memory state around the buggy address:
      [  314.892707]  ffff88886c746180: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
      [  314.892976]  ffff88886c746200: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
      [  314.893251] >ffff88886c746280: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
      [  314.893522]                    ^
      [  314.893657]  ffff88886c746300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
      [  314.893924]  ffff88886c746380: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
      [  314.894189] ==================================================================
      
      Fix the issue by duplicating tunnel info into per-encap copy that is
      deallocated with encap structure. Also, duplicate tunnel info in flow parse
      attribute to support cases when flow might be attached asynchronously.
      
      Fixes: 1f6da306 ("net/mlx5e: Geneve, Keep tunnel info as pointer to the original struct")
      Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
      Reviewed-by: default avatarYevgeny Kliteynik <kliteyn@mellanox.com>
      Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      2a4b6526
    • Eli Britstein's avatar
      net/mlx5: Fix NULL pointer dereference in extended destination · 0fd79b1e
      Eli Britstein authored
      The cited commit refactored the encap id into a struct pointed from the
      destination.
      Bug fix for the case there is no encap for one of the destinations.
      
      Fixes: 2b688ea5 ("net/mlx5: Add flow steering actions to fs_cmd shim layer")
      Signed-off-by: default avatarEli Britstein <elibr@mellanox.com>
      Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      0fd79b1e
    • Parav Pandit's avatar
      net/mlx5: Fix rtable reference leak · 2347cee8
      Parav Pandit authored
      If the rt entry gateway family is not AF_INET for multipath device,
      rtable reference is leaked.
      Hence, fix it by releasing the reference.
      
      Fixes: 5fb091e8 ("net/mlx5e: Use hint to resolve route when in HW multipath mode")
      Fixes: e32ee6c7 ("net/mlx5e: Support tunnel encap over tagged Ethernet")
      Signed-off-by: default avatarParav Pandit <parav@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      2347cee8
    • Vlad Buslov's avatar
      net/mlx5e: Only skip encap flows update when encap init failed · 64d7b685
      Vlad Buslov authored
      When encap entry initialization completes successfully e->compl_result is
      set to positive value and not zero, like mlx5e_rep_update_flows() assumes
      at the moment. Fix the conditional to only skip encap flows update when
      e->compl_result < 0.
      
      Fixes: 2a1f1768 ("net/mlx5e: Refactor neigh update for concurrent execution")
      Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
      Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      64d7b685
    • Maor Gottlieb's avatar
      net/mlx5e: Replace kfree with kvfree when free vhca stats · 5dfb6335
      Maor Gottlieb authored
      Memory allocated by kvzalloc should be freed by kvfree.
      
      Fixes: cef35af3 ("net/mlx5e: Add mlx5e HV VHCA stats agent")
      Signed-off-by: default avatarMaor Gottlieb <maorg@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      5dfb6335
    • Dmytro Linkin's avatar
      net/mlx5e: Remove incorrect match criteria assignment line · 752d3dc0
      Dmytro Linkin authored
      Driver have function, which enable match criteria for misc parameters
      in dependence of eswitch capabilities.
      
      Fixes: 4f5d1bea ("Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux")
      Signed-off-by: default avatarDmytro Linkin <dmitrolin@mellanox.com>
      Reviewed-by: default avatarJianbo Liu <jianbol@mellanox.com>
      Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
      Reviewed-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      752d3dc0
    • Dmytro Linkin's avatar
      net/mlx5e: Determine source port properly for vlan push action · d5dbcc4e
      Dmytro Linkin authored
      Termination tables are used for vlan push actions on uplink ports.
      To support RoCE dual port the source port value was placed in a register.
      Fix the code to use an API method returning the source port according to
      the FW capabilities.
      
      Fixes: 10caabda ("net/mlx5e: Use termination table for VLAN push actions")
      Signed-off-by: default avatarDmytro Linkin <dmitrolin@mellanox.com>
      Reviewed-by: default avatarJianbo Liu <jianbol@mellanox.com>
      Reviewed-by: default avatarOz Shlomo <ozsh@mellanox.com>
      Reviewed-by: default avatarRoi Dayan <roid@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      d5dbcc4e
    • Roi Dayan's avatar
      net/mlx5: Fix flow counter list auto bits struct · 6dfef396
      Roi Dayan authored
      The union should contain the extended dest and counter list.
      Remove the resevered 0x40 bits which is redundant.
      This change doesn't break any functionally.
      Everything works today because the code in fs_cmd.c is using
      the correct structs if extended dest or the basic dest.
      
      Fixes: 1b115498 ("net/mlx5: Introduce extended destination fields")
      Signed-off-by: default avatarRoi Dayan <roid@mellanox.com>
      Reviewed-by: default avatarMark Bloch <markb@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      6dfef396
    • David S. Miller's avatar
      Merge branch 'VLAN-fixes-for-Ocelot-switch' · c1b5ddc1
      David S. Miller authored
      Vladimir Oltean says:
      
      ====================
      VLAN fixes for Ocelot switch
      
      This series addresses 2 issues with vlan_filtering=1:
      - Untagged traffic gets dropped unless commands are run in a very
        specific order.
      - Untagged traffic starts being transmitted as tagged after adding
        another untagged VID on the port.
      
      Tested on NXP LS1028A-RDB board.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c1b5ddc1