1. 17 9月, 2018 10 次提交
    • N
      net: macb: disable scatter-gather for macb on sama5d3 · eb4ed8e2
      Nicolas Ferre 提交于
      Create a new configuration for the sama5d3-macb new compatibility string.
      This configuration disables scatter-gather because we experienced lock down
      of the macb interface of this particular SoC under very high load.
      Signed-off-by: NNicolas Ferre <nicolas.ferre@microchip.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      eb4ed8e2
    • A
      net: mvpp2: let phylink manage the carrier state · 41948ccb
      Antoine Tenart 提交于
      Net drivers using phylink shouldn't mess with the link carrier
      themselves and should let phylink manage it. The mvpp2 driver wasn't
      following this best practice as the mac_config() function made calls to
      change the link carrier state. This led to wrongly reported carrier link
      state which then triggered other issues. This patch fixes this
      behaviour.
      
      But the PPv2 driver relied on this misbehaviour in two cases: for fixed
      links and when not using phylink (ACPI mode). The later was fixed by
      adding an explicit call to link_up(), which when the ACPI mode will use
      phylink should be removed.
      
      The fixed link case was relying on the mac_config() function to set the
      link up, as we found an issue in phylink_start() which assumes the
      carrier is off. If not, the link_up() function is never called. To fix
      this, a call to netif_carrier_off() is added just before phylink_start()
      so that we do not introduce a regression in the driver.
      
      Fixes: 4bb04326 ("net: mvpp2: phylink support")
      Reported-by: NRussell King <linux@armlinux.org.uk>
      Signed-off-by: NAntoine Tenart <antoine.tenart@bootlin.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      41948ccb
    • G
      pppoe: fix reception of frames with no mac header · 8540827e
      Guillaume Nault 提交于
      pppoe_rcv() needs to look back at the Ethernet header in order to
      lookup the PPPoE session. Therefore we need to ensure that the mac
      header is big enough to contain an Ethernet header. Otherwise
      eth_hdr(skb)->h_source might access invalid data.
      
      ==================================================================
      BUG: KMSAN: uninit-value in __get_item drivers/net/ppp/pppoe.c:172 [inline]
      BUG: KMSAN: uninit-value in get_item drivers/net/ppp/pppoe.c:236 [inline]
      BUG: KMSAN: uninit-value in pppoe_rcv+0xcef/0x10e0 drivers/net/ppp/pppoe.c:450
      CPU: 0 PID: 4543 Comm: syz-executor355 Not tainted 4.16.0+ #87
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google
      01/01/2011
      Call Trace:
       __dump_stack lib/dump_stack.c:17 [inline]
       dump_stack+0x185/0x1d0 lib/dump_stack.c:53
       kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
       __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
       __get_item drivers/net/ppp/pppoe.c:172 [inline]
       get_item drivers/net/ppp/pppoe.c:236 [inline]
       pppoe_rcv+0xcef/0x10e0 drivers/net/ppp/pppoe.c:450
       __netif_receive_skb_core+0x47df/0x4a90 net/core/dev.c:4562
       __netif_receive_skb net/core/dev.c:4627 [inline]
       netif_receive_skb_internal+0x49d/0x630 net/core/dev.c:4701
       netif_receive_skb+0x230/0x240 net/core/dev.c:4725
       tun_rx_batched drivers/net/tun.c:1555 [inline]
       tun_get_user+0x740f/0x7c60 drivers/net/tun.c:1962
       tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:1990
       call_write_iter include/linux/fs.h:1782 [inline]
       new_sync_write fs/read_write.c:469 [inline]
       __vfs_write+0x7fb/0x9f0 fs/read_write.c:482
       vfs_write+0x463/0x8d0 fs/read_write.c:544
       SYSC_write+0x172/0x360 fs/read_write.c:589
       SyS_write+0x55/0x80 fs/read_write.c:581
       do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
       entry_SYSCALL_64_after_hwframe+0x3d/0xa2
      RIP: 0033:0x4447c9
      RSP: 002b:00007fff64c8fc28 EFLAGS: 00000297 ORIG_RAX: 0000000000000001
      RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004447c9
      RDX: 000000000000fd87 RSI: 0000000020000600 RDI: 0000000000000004
      RBP: 00000000006cf018 R08: 00007fff64c8fda8 R09: 00007fff00006bda
      R10: 0000000000005fe7 R11: 0000000000000297 R12: 00000000004020d0
      R13: 0000000000402160 R14: 0000000000000000 R15: 0000000000000000
      
      Uninit was created at:
       kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
       kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
       kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
       kmsan_slab_alloc+0x11/0x20 mm/kmsan/kmsan.c:321
       slab_post_alloc_hook mm/slab.h:445 [inline]
       slab_alloc_node mm/slub.c:2737 [inline]
       __kmalloc_node_track_caller+0xaed/0x11c0 mm/slub.c:4369
       __kmalloc_reserve net/core/skbuff.c:138 [inline]
       __alloc_skb+0x2cf/0x9f0 net/core/skbuff.c:206
       alloc_skb include/linux/skbuff.h:984 [inline]
       alloc_skb_with_frags+0x1d4/0xb20 net/core/skbuff.c:5234
       sock_alloc_send_pskb+0xb56/0x1190 net/core/sock.c:2085
       tun_alloc_skb drivers/net/tun.c:1532 [inline]
       tun_get_user+0x2242/0x7c60 drivers/net/tun.c:1829
       tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:1990
       call_write_iter include/linux/fs.h:1782 [inline]
       new_sync_write fs/read_write.c:469 [inline]
       __vfs_write+0x7fb/0x9f0 fs/read_write.c:482
       vfs_write+0x463/0x8d0 fs/read_write.c:544
       SYSC_write+0x172/0x360 fs/read_write.c:589
       SyS_write+0x55/0x80 fs/read_write.c:581
       do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
       entry_SYSCALL_64_after_hwframe+0x3d/0xa2
      ==================================================================
      
      Fixes: 224cf5ad ("ppp: Move the PPP drivers")
      Reported-by: syzbot+f5f6080811c849739212@syzkaller.appspotmail.com
      Signed-off-by: NGuillaume Nault <g.nault@alphalink.fr>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8540827e
    • C
      net: ethernet: ti: add missing GENERIC_ALLOCATOR dependency · f025571e
      Corentin Labbe 提交于
      This patch mades TI_DAVINCI_CPDMA select GENERIC_ALLOCATOR.
      without that, the following sparc64 build failure happen
      
      drivers/net/ethernet/ti/davinci_cpdma.o: In function `cpdma_check_free_tx_desc':
      (.text+0x278): undefined reference to `gen_pool_avail'
      drivers/net/ethernet/ti/davinci_cpdma.o: In function `cpdma_chan_submit':
      (.text+0x340): undefined reference to `gen_pool_alloc'
      (.text+0x5c4): undefined reference to `gen_pool_free'
      drivers/net/ethernet/ti/davinci_cpdma.o: In function `__cpdma_chan_free':
      davinci_cpdma.c:(.text+0x64c): undefined reference to `gen_pool_free'
      drivers/net/ethernet/ti/davinci_cpdma.o: In function `cpdma_desc_pool_destroy.isra.6':
      davinci_cpdma.c:(.text+0x17ac): undefined reference to `gen_pool_size'
      davinci_cpdma.c:(.text+0x17b8): undefined reference to `gen_pool_avail'
      davinci_cpdma.c:(.text+0x1824): undefined reference to `gen_pool_size'
      davinci_cpdma.c:(.text+0x1830): undefined reference to `gen_pool_avail'
      drivers/net/ethernet/ti/davinci_cpdma.o: In function `cpdma_ctlr_create':
      (.text+0x19f8): undefined reference to `devm_gen_pool_create'
      (.text+0x1a90): undefined reference to `gen_pool_add_virt'
      Makefile:1011: recipe for target 'vmlinux' failed
      Signed-off-by: NCorentin Labbe <clabbe@baylibre.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f025571e
    • D
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf · 0376d5dc
      David S. Miller 提交于
      Daniel Borkmann says:
      
      ====================
      pull-request: bpf 2018-09-16
      
      The following pull-request contains BPF updates for your *net* tree.
      
      The main changes are:
      
      1) Fix end boundary calculation in BTF for the type section, from Martin.
      
      2) Fix and revert subtraction of pointers that was accidentally allowed
         for unprivileged programs, from Alexei.
      
      3) Fix bpf_msg_pull_data() helper by using __GFP_COMP in order to avoid
         a warning in linearizing sg pages into a single one for large allocs,
         from Tushar.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      0376d5dc
    • T
      veth: Orphan skb before GRO · 4bf9ffa0
      Toshiaki Makita 提交于
      GRO expects skbs not to be owned by sockets, but when XDP is enabled veth
      passed skbs owned by sockets. It caused corrupted sk_wmem_alloc.
      
      Paolo Abeni reported the following splat:
      
      [  362.098904] refcount_t overflow at skb_set_owner_w+0x5e/0xa0 in iperf3[1644], uid/euid: 0/0
      [  362.108239] WARNING: CPU: 0 PID: 1644 at kernel/panic.c:648 refcount_error_report+0xa0/0xa4
      [  362.117547] Modules linked in: tcp_diag inet_diag veth intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate intel_uncore intel_rapl_perf ipmi_ssif iTCO_wdt sg ipmi_si iTCO_vendor_support ipmi_devintf mxm_wmi ipmi_msghandler pcspkr dcdbas mei_me wmi mei lpc_ich acpi_power_meter pcc_cpufreq xfs libcrc32c sd_mod mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ixgbe igb ttm ahci mdio libahci ptp crc32c_intel drm pps_core libata i2c_algo_bit dca dm_mirror dm_region_hash dm_log dm_mod
      [  362.176622] CPU: 0 PID: 1644 Comm: iperf3 Not tainted 4.19.0-rc2.vanilla+ #2025
      [  362.184777] Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.1.7 06/16/2016
      [  362.193124] RIP: 0010:refcount_error_report+0xa0/0xa4
      [  362.198758] Code: 08 00 00 48 8b 95 80 00 00 00 49 8d 8c 24 80 0a 00 00 41 89 c1 44 89 2c 24 48 89 de 48 c7 c7 18 4d e7 9d 31 c0 e8 30 fa ff ff <0f> 0b eb 88 0f 1f 44 00 00 55 48 89 e5 41 56 41 55 41 54 49 89 fc
      [  362.219711] RSP: 0018:ffff9ee6ff603c20 EFLAGS: 00010282
      [  362.225538] RAX: 0000000000000000 RBX: ffffffff9de83e10 RCX: 0000000000000000
      [  362.233497] RDX: 0000000000000001 RSI: ffff9ee6ff6167d8 RDI: ffff9ee6ff6167d8
      [  362.241457] RBP: ffff9ee6ff603d78 R08: 0000000000000490 R09: 0000000000000004
      [  362.249416] R10: 0000000000000000 R11: ffff9ee6ff603990 R12: ffff9ee664b94500
      [  362.257377] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff9de615f9
      [  362.265337] FS:  00007f1d22d28740(0000) GS:ffff9ee6ff600000(0000) knlGS:0000000000000000
      [  362.274363] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  362.280773] CR2: 00007f1d222f35d0 CR3: 0000001fddfec003 CR4: 00000000001606f0
      [  362.288733] Call Trace:
      [  362.291459]  <IRQ>
      [  362.293702]  ex_handler_refcount+0x4e/0x80
      [  362.298269]  fixup_exception+0x35/0x40
      [  362.302451]  do_trap+0x109/0x150
      [  362.306048]  do_error_trap+0xd5/0x130
      [  362.315766]  invalid_op+0x14/0x20
      [  362.319460] RIP: 0010:skb_set_owner_w+0x5e/0xa0
      [  362.324512] Code: ef ff ff 74 49 48 c7 43 60 20 7b 4a 9d 8b 85 f4 01 00 00 85 c0 75 16 8b 83 e0 00 00 00 f0 01 85 44 01 00 00 0f 88 d8 23 16 00 <5b> 5d c3 80 8b 91 00 00 00 01 8b 85 f4 01 00 00 89 83 a4 00 00 00
      [  362.345465] RSP: 0018:ffff9ee6ff603e20 EFLAGS: 00010a86
      [  362.351291] RAX: 0000000000001100 RBX: ffff9ee65deec700 RCX: ffff9ee65e829244
      [  362.359250] RDX: 0000000000000100 RSI: ffff9ee65e829100 RDI: ffff9ee65deec700
      [  362.367210] RBP: ffff9ee65e829100 R08: 000000000002a380 R09: 0000000000000000
      [  362.375169] R10: 0000000000000002 R11: fffff1a4bf77bb00 R12: ffffc0754661d000
      [  362.383130] R13: ffff9ee65deec200 R14: ffff9ee65f597000 R15: 00000000000000aa
      [  362.391092]  veth_xdp_rcv+0x4e4/0x890 [veth]
      [  362.399357]  veth_poll+0x4d/0x17a [veth]
      [  362.403731]  net_rx_action+0x2af/0x3f0
      [  362.407912]  __do_softirq+0xdd/0x29e
      [  362.411897]  do_softirq_own_stack+0x2a/0x40
      [  362.416561]  </IRQ>
      [  362.418899]  do_softirq+0x4b/0x70
      [  362.422594]  __local_bh_enable_ip+0x50/0x60
      [  362.427258]  ip_finish_output2+0x16a/0x390
      [  362.431824]  ip_output+0x71/0xe0
      [  362.440670]  __tcp_transmit_skb+0x583/0xab0
      [  362.445333]  tcp_write_xmit+0x247/0xfb0
      [  362.449609]  __tcp_push_pending_frames+0x2d/0xd0
      [  362.454760]  tcp_sendmsg_locked+0x857/0xd30
      [  362.459424]  tcp_sendmsg+0x27/0x40
      [  362.463216]  sock_sendmsg+0x36/0x50
      [  362.467104]  sock_write_iter+0x87/0x100
      [  362.471382]  __vfs_write+0x112/0x1a0
      [  362.475369]  vfs_write+0xad/0x1a0
      [  362.479062]  ksys_write+0x52/0xc0
      [  362.482759]  do_syscall_64+0x5b/0x180
      [  362.486841]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
      [  362.492473] RIP: 0033:0x7f1d22293238
      [  362.496458] Code: 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 c5 54 2d 00 8b 00 85 c0 75 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 49 89 d4 55
      [  362.517409] RSP: 002b:00007ffebaef8008 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
      [  362.525855] RAX: ffffffffffffffda RBX: 0000000000002800 RCX: 00007f1d22293238
      [  362.533816] RDX: 0000000000002800 RSI: 00007f1d22d36000 RDI: 0000000000000005
      [  362.541775] RBP: 00007f1d22d36000 R08: 00000002db777a30 R09: 0000562b70712b20
      [  362.549734] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
      [  362.557693] R13: 0000000000002800 R14: 00007ffebaef8060 R15: 0000562b70712260
      
      In order to avoid this, orphan the skb before entering GRO.
      
      Fixes: 948d4f21 ("veth: Add driver XDP")
      Reported-by: NPaolo Abeni <pabeni@redhat.com>
      Signed-off-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
      Tested-by: NPaolo Abeni <pabeni@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      4bf9ffa0
    • D
      Merge branch 'udp-add-missing-check-on-edumx-rx-path' · 97829888
      David S. Miller 提交于
      Paolo Abeni says:
      
      ====================
      udp: add missing check on edumx rx path
      
      The early demux RX path for the UDP protocol is currently missing
      some checks. Both ipv4 and ipv6 implementations lack checksum conversion
      and the ipv6 implementation additionally lack the zero checksum
      validation.
      
      The first patch takes care of UDPv4 and the second one of UDPv6
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      97829888
    • P
      udp6: add missing checks on edumux packet processing · eb63f296
      Paolo Abeni 提交于
      Currently the UDPv6 early demux rx code path lacks some mandatory
      checks, already implemented into the normal RX code path - namely
      the checksum conversion and no_check6_rx check.
      
      Similar to the previous commit, we move the common processing to
      an UDPv6 specific helper and call it from both edemux code path
      and normal code path. In respect to the UDPv4, we need to add an
      explicit check for non zero csum according to no_check6_rx value.
      Reported-by: NJianlin Shi <jishi@redhat.com>
      Suggested-by: NXin Long <lucien.xin@gmail.com>
      Fixes: c9f2c1ae ("udp6: fix socket leak on early demux")
      Fixes: 2abb7cdc ("udp: Add support for doing checksum unnecessary conversion")
      Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      eb63f296
    • P
      udp4: fix IP_CMSG_CHECKSUM for connected sockets · 2b5a9217
      Paolo Abeni 提交于
      commit 2abb7cdc ("udp: Add support for doing checksum
      unnecessary conversion") left out the early demux path for
      connected sockets. As a result IP_CMSG_CHECKSUM gives wrong
      values for such socket when GRO is not enabled/available.
      
      This change addresses the issue by moving the csum conversion to a
      common helper and using such helper in both the default and the
      early demux rx path.
      
      Fixes: 2abb7cdc ("udp: Add support for doing checksum unnecessary conversion")
      Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2b5a9217
    • J
      stmmac: fix valid numbers of unicast filter entries · edf2ef72
      Jongsung Kim 提交于
      Synopsys DWC Ethernet MAC can be configured to have 1..32, 64, or
      128 unicast filter entries. (Table 7-8 MAC Address Registers from
      databook) Fix dwmac1000_validate_ucast_entries() to accept values
      between 1 and 32 in addition.
      Signed-off-by: NJongsung Kim <neidhard.kim@lge.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      edf2ef72
  2. 14 9月, 2018 13 次提交
    • D
      net/sched: act_sample: fix NULL dereference in the data path · 34043d25
      Davide Caratti 提交于
      Matteo reported the following splat, testing the datapath of TC 'sample':
      
       BUG: KASAN: null-ptr-deref in tcf_sample_act+0xc4/0x310
       Read of size 8 at addr 0000000000000000 by task nc/433
      
       CPU: 0 PID: 433 Comm: nc Not tainted 4.19.0-rc3-kvm #17
       Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS ?-20180531_142017-buildhw-08.phx2.fedoraproject.org-1.fc28 04/01/2014
       Call Trace:
        kasan_report.cold.6+0x6c/0x2fa
        tcf_sample_act+0xc4/0x310
        ? dev_hard_start_xmit+0x117/0x180
        tcf_action_exec+0xa3/0x160
        tcf_classify+0xdd/0x1d0
        htb_enqueue+0x18e/0x6b0
        ? deref_stack_reg+0x7a/0xb0
        ? htb_delete+0x4b0/0x4b0
        ? unwind_next_frame+0x819/0x8f0
        ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
        __dev_queue_xmit+0x722/0xca0
        ? unwind_get_return_address_ptr+0x50/0x50
        ? netdev_pick_tx+0xe0/0xe0
        ? save_stack+0x8c/0xb0
        ? kasan_kmalloc+0xbe/0xd0
        ? __kmalloc_track_caller+0xe4/0x1c0
        ? __kmalloc_reserve.isra.45+0x24/0x70
        ? __alloc_skb+0xdd/0x2e0
        ? sk_stream_alloc_skb+0x91/0x3b0
        ? tcp_sendmsg_locked+0x71b/0x15a0
        ? tcp_sendmsg+0x22/0x40
        ? __sys_sendto+0x1b0/0x250
        ? __x64_sys_sendto+0x6f/0x80
        ? do_syscall_64+0x5d/0x150
        ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
        ? __sys_sendto+0x1b0/0x250
        ? __x64_sys_sendto+0x6f/0x80
        ? do_syscall_64+0x5d/0x150
        ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
        ip_finish_output2+0x495/0x590
        ? ip_copy_metadata+0x2e0/0x2e0
        ? skb_gso_validate_network_len+0x6f/0x110
        ? ip_finish_output+0x174/0x280
        __tcp_transmit_skb+0xb17/0x12b0
        ? __tcp_select_window+0x380/0x380
        tcp_write_xmit+0x913/0x1de0
        ? __sk_mem_schedule+0x50/0x80
        tcp_sendmsg_locked+0x49d/0x15a0
        ? tcp_rcv_established+0x8da/0xa30
        ? tcp_set_state+0x220/0x220
        ? clear_user+0x1f/0x50
        ? iov_iter_zero+0x1ae/0x590
        ? __fget_light+0xa0/0xe0
        tcp_sendmsg+0x22/0x40
        __sys_sendto+0x1b0/0x250
        ? __ia32_sys_getpeername+0x40/0x40
        ? _copy_to_user+0x58/0x70
        ? poll_select_copy_remaining+0x176/0x200
        ? __pollwait+0x1c0/0x1c0
        ? ktime_get_ts64+0x11f/0x140
        ? kern_select+0x108/0x150
        ? core_sys_select+0x360/0x360
        ? vfs_read+0x127/0x150
        ? kernel_write+0x90/0x90
        __x64_sys_sendto+0x6f/0x80
        do_syscall_64+0x5d/0x150
        entry_SYSCALL_64_after_hwframe+0x44/0xa9
       RIP: 0033:0x7fefef2b129d
       Code: ff ff ff ff eb b6 0f 1f 80 00 00 00 00 48 8d 05 51 37 0c 00 41 89 ca 8b 00 85 c0 75 20 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 6b f3 c3 66 0f 1f 84 00 00 00 00 00 41 56 41
       RSP: 002b:00007fff2f5350c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
       RAX: ffffffffffffffda RBX: 000056118d60c120 RCX: 00007fefef2b129d
       RDX: 0000000000002000 RSI: 000056118d629320 RDI: 0000000000000003
       RBP: 000056118d530370 R08: 0000000000000000 R09: 0000000000000000
       R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000002000
       R13: 000056118d5c2a10 R14: 000056118d5c2a10 R15: 000056118d5303b8
      
      tcf_sample_act() tried to update its per-cpu stats, but tcf_sample_init()
      forgot to allocate them, because tcf_idr_create() was called with a wrong
      value of 'cpustats'. Setting it to true proved to fix the reported crash.
      Reported-by: NMatteo Croce <mcroce@redhat.com>
      Fixes: 65a206c0 ("net/sched: Change act_api and act_xxx modules to use IDR")
      Fixes: 5c5670fa ("net/sched: Introduce sample tc action")
      Tested-by: NMatteo Croce <mcroce@redhat.com>
      Signed-off-by: NDavide Caratti <dcaratti@redhat.com>
      Acked-by: NJiri Pirko <jiri@mellanox.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      34043d25
    • J
      socket: fix struct ifreq size in compat ioctl · 1cebf8f1
      Johannes Berg 提交于
      As reported by Reobert O'Callahan, since Viro's commit to kill
      dev_ifsioc() we attempt to copy too much data in compat mode,
      which may lead to EFAULT when the 32-bit version of struct ifreq
      sits at/near the end of a page boundary, and the next page isn't
      mapped.
      
      Fix this by passing the approprate compat/non-compat size to copy
      and using that, as before the dev_ifsioc() removal. This works
      because only the embedded "struct ifmap" has different size, and
      this is only used in SIOCGIFMAP/SIOCSIFMAP which has a different
      handler. All other parts of the union are naturally compatible.
      
      This fixes https://bugzilla.kernel.org/show_bug.cgi?id=199469.
      
      Fixes: bf440573 ("kill dev_ifsioc()")
      Reported-by: NRobert O'Callahan <robert@ocallahan.org>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      1cebf8f1
    • T
      gso_segment: Reset skb->mac_len after modifying network header · c56cae23
      Toke Høiland-Jørgensen 提交于
      When splitting a GSO segment that consists of encapsulated packets, the
      skb->mac_len of the segments can end up being set wrong, causing packet
      drops in particular when using act_mirred and ifb interfaces in
      combination with a qdisc that splits GSO packets.
      
      This happens because at the time skb_segment() is called, network_header
      will point to the inner header, throwing off the calculation in
      skb_reset_mac_len(). The network_header is subsequently adjust by the
      outer IP gso_segment handlers, but they don't set the mac_len.
      
      Fix this by adding skb_reset_mac_len() calls to both the IPv4 and IPv6
      gso_segment handlers, after they modify the network_header.
      
      Many thanks to Eric Dumazet for his help in identifying the cause of
      the bug.
      Acked-by: NDave Taht <dave.taht@gmail.com>
      Reviewed-by: NEric Dumazet <edumazet@google.com>
      Signed-off-by: NToke Høiland-Jørgensen <toke@toke.dk>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c56cae23
    • D
      Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth · bffb9b51
      David S. Miller 提交于
      Johan Hedberg says:
      
      ====================
      pull request: bluetooth 2018-09-13
      
      A few Bluetooth fixes for the 4.19-rc series:
      
       - Fixed rw_semaphore leak in hci_ldisc
       - Fixed local Out-of-Band pairing data handling
      
      Let me know if there are any issues pulling. Thanks.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      bffb9b51
    • D
      Merge branch 'tls-don-t-leave-keys-in-kernel-memory' · 79140335
      David S. Miller 提交于
      Sabrina Dubroca says:
      
      ====================
      tls: don't leave keys in kernel memory
      
      There are a few places where the RX/TX key for a TLS socket is copied
      to kernel memory. This series clears those memory areas when they're no
      longer needed.
      
      v2: add union tls_crypto_context, following Vakul Garg's comment
          swap patch 2 and 3, using new union in patch 3
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      79140335
    • S
      tls: clear key material from kernel memory when do_tls_setsockopt_conf fails · c844eb46
      Sabrina Dubroca 提交于
      Fixes: 3c4d7559 ("tls: kernel TLS support")
      Signed-off-by: NSabrina Dubroca <sd@queasysnail.net>
      Signed-off-by: NSabrina Dubroca <sd@queasysnail.net>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c844eb46
    • S
      tls: zero the crypto information from tls_context before freeing · 86029d10
      Sabrina Dubroca 提交于
      This contains key material in crypto_send_aes_gcm_128 and
      crypto_recv_aes_gcm_128.
      
      Introduce union tls_crypto_context, and replace the two identical
      unions directly embedded in struct tls_context with it. We can then
      use this union to clean up the memory in the new tls_ctx_free()
      function.
      
      Fixes: 3c4d7559 ("tls: kernel TLS support")
      Signed-off-by: NSabrina Dubroca <sd@queasysnail.net>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      86029d10
    • S
      tls: don't copy the key out of tls12_crypto_info_aes_gcm_128 · 7cba09c6
      Sabrina Dubroca 提交于
      There's no need to copy the key to an on-stack buffer before calling
      crypto_aead_setkey().
      
      Fixes: 3c4d7559 ("tls: kernel TLS support")
      Signed-off-by: NSabrina Dubroca <sd@queasysnail.net>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7cba09c6
    • V
      neighbour: confirm neigh entries when ARP packet is received · f0e0d044
      Vasily Khoruzhick 提交于
      Update 'confirmed' timestamp when ARP packet is received. It shouldn't
      affect locktime logic and anyway entry can be confirmed by any higher-layer
      protocol. Thus it makes sense to confirm it when ARP packet is received.
      
      Fixes: 77d71233 ("neighbour: update neigh timestamps iff update is effective")
      Signed-off-by: NVasily Khoruzhick <vasilykh@arista.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f0e0d044
    • R
      net: rtnl_configure_link: fix dev flags changes arg to __dev_notify_flags · 56a49d70
      Roopa Prabhu 提交于
      This fix addresses https://bugzilla.kernel.org/show_bug.cgi?id=201071
      
      Commit 5025f7f7 wrongly relied on __dev_change_flags to notify users of
      dev flag changes in the case when dev->rtnl_link_state = RTNL_LINK_INITIALIZED.
      Fix it by indicating flag changes explicitly to __dev_notify_flags.
      
      Fixes: 5025f7f7 ("rtnetlink: add rtnl_link_state check in rtnl_configure_link")
      Reported-By: NLiam mcbirnie <liam.mcbirnie@boeing.com>
      Signed-off-by: NRoopa Prabhu <roopa@cumulusnetworks.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      56a49d70
    • W
      net/appletalk: fix minor pointer leak to userspace in SIOCFINDIPDDPRT · 9824dfae
      Willy Tarreau 提交于
      Fields ->dev and ->next of struct ipddp_route may be copied to
      userspace on the SIOCFINDIPDDPRT ioctl. This is only accessible
      to CAP_NET_ADMIN though. Let's manually copy the relevant fields
      instead of using memcpy().
      
      BugLink: http://blog.infosectcbr.com.au/2018/09/linux-kernel-infoleaks.html
      Cc: Jann Horn <jannh@google.com>
      Signed-off-by: NWilly Tarreau <w@1wt.eu>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      9824dfae
    • S
      hv_netvsc: fix schedule in RCU context · 018349d7
      Stephen Hemminger 提交于
      When netvsc device is removed it can call reschedule in RCU context.
      This happens because canceling the subchannel setup work could (in theory)
      cause a reschedule when manipulating the timer.
      
      To reproduce, run with lockdep enabled kernel and unbind
      a network device from hv_netvsc (via sysfs).
      
      [  160.682011] WARNING: suspicious RCU usage
      [  160.707466] 4.19.0-rc3-uio+ #2 Not tainted
      [  160.709937] -----------------------------
      [  160.712352] ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section!
      [  160.723691]
      [  160.723691] other info that might help us debug this:
      [  160.723691]
      [  160.730955]
      [  160.730955] rcu_scheduler_active = 2, debug_locks = 1
      [  160.762813] 5 locks held by rebind-eth.sh/1812:
      [  160.766851]  #0: 000000008befa37a (sb_writers#6){.+.+}, at: vfs_write+0x184/0x1b0
      [  160.773416]  #1: 00000000b097f236 (&of->mutex){+.+.}, at: kernfs_fop_write+0xe2/0x1a0
      [  160.783766]  #2: 0000000041ee6889 (kn->count#3){++++}, at: kernfs_fop_write+0xeb/0x1a0
      [  160.787465]  #3: 0000000056d92a74 (&dev->mutex){....}, at: device_release_driver_internal+0x39/0x250
      [  160.816987]  #4: 0000000030f6031e (rcu_read_lock){....}, at: netvsc_remove+0x1e/0x250 [hv_netvsc]
      [  160.828629]
      [  160.828629] stack backtrace:
      [  160.831966] CPU: 1 PID: 1812 Comm: rebind-eth.sh Not tainted 4.19.0-rc3-uio+ #2
      [  160.832952] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v1.0 11/26/2012
      [  160.832952] Call Trace:
      [  160.832952]  dump_stack+0x85/0xcb
      [  160.832952]  ___might_sleep+0x1a3/0x240
      [  160.832952]  __flush_work+0x57/0x2e0
      [  160.832952]  ? __mutex_lock+0x83/0x990
      [  160.832952]  ? __kernfs_remove+0x24f/0x2e0
      [  160.832952]  ? __kernfs_remove+0x1b2/0x2e0
      [  160.832952]  ? mark_held_locks+0x50/0x80
      [  160.832952]  ? get_work_pool+0x90/0x90
      [  160.832952]  __cancel_work_timer+0x13c/0x1e0
      [  160.832952]  ? netvsc_remove+0x1e/0x250 [hv_netvsc]
      [  160.832952]  ? __lock_is_held+0x55/0x90
      [  160.832952]  netvsc_remove+0x9a/0x250 [hv_netvsc]
      [  160.832952]  vmbus_remove+0x26/0x30
      [  160.832952]  device_release_driver_internal+0x18a/0x250
      [  160.832952]  unbind_store+0xb4/0x180
      [  160.832952]  kernfs_fop_write+0x113/0x1a0
      [  160.832952]  __vfs_write+0x36/0x1a0
      [  160.832952]  ? rcu_read_lock_sched_held+0x6b/0x80
      [  160.832952]  ? rcu_sync_lockdep_assert+0x2e/0x60
      [  160.832952]  ? __sb_start_write+0x141/0x1a0
      [  160.832952]  ? vfs_write+0x184/0x1b0
      [  160.832952]  vfs_write+0xbe/0x1b0
      [  160.832952]  ksys_write+0x55/0xc0
      [  160.832952]  do_syscall_64+0x60/0x1b0
      [  160.832952]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
      [  160.832952] RIP: 0033:0x7fe48f4c8154
      
      Resolve this by getting RTNL earlier. This is safe because the subchannel
      work queue does trylock on RTNL and will detect the race.
      
      Fixes: 7b2ee50c ("hv_netvsc: common detach logic")
      Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com>
      Reviewed-by: NHaiyang Zhang <haiyangz@microsoft.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      018349d7
    • C
      net_sched: notify filter deletion when deleting a chain · f5b9bac7
      Cong Wang 提交于
      When we delete a chain of filters, we need to notify
      user-space we are deleting each filters in this chain
      too.
      
      Fixes: 32a4f5ec ("net: sched: introduce chain object to uapi")
      Cc: Jiri Pirko <jiri@mellanox.com>
      Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f5b9bac7
  3. 13 9月, 2018 17 次提交