1. 16 12月, 2015 2 次提交
  2. 15 12月, 2015 12 次提交
    • V
      skbuff: Fix offset error in skb_reorder_vlan_header · f6548615
      Vlad Yasevich 提交于
      skb_reorder_vlan_header is called after the vlan header has
      been pulled.  As a result the offset of the begining of
      the mac header has been incrased by 4 bytes (VLAN_HLEN).
      When moving the mac addresses, include this incrase in
      the offset calcualation so that the mac addresses are
      copied correctly.
      
      Fixes: a6e18ff1 (vlan: Fix untag operations of stacked vlans with REORDER_HEADER off)
      CC: Nicolas Dichtel <nicolas.dichtel@6wind.com>
      CC: Patrick McHardy <kaber@trash.net>
      Signed-off-by: NVladislav Yasevich <vyasevich@gmail.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f6548615
    • W
    • K
      ravb: Add disable 10base · 54499969
      Kazuya Mizuguchi 提交于
      Ethernet AVB does not support 10 Mbps transfer speed.
      Signed-off-by: NKazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
      Signed-off-by: NYoshihiro Kaneko <ykaneko0929@gmail.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      54499969
    • S
      sh_eth: fix descriptor access endianness · 1299653a
      Sergei Shtylyov 提交于
      The driver never  calls cpu_to_edmac() when writing the descriptor address
      and edmac_to_cpu() when reading it, although it should -- fix this.
      
      Note that the frame/buffer length descriptor field accesses also need fixing
      but since they are both 16-bit we can't  use {cpu|edmac}_to_{edmac|cpu}()...
      Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      1299653a
    • S
      sh_eth: fix TX buffer byte-swapping · 3e230993
      Sergei Shtylyov 提交于
      For the little-endian SH771x kernels the driver has to byte-swap the RX/TX
      buffers,  however yet unset physcial address from the TX descriptor is used
      to call sh_eth_soft_swap(). Use 'skb->data' instead...
      
      Fixes: 31fcb99d ("net: sh_eth: remove __flush_purge_region")
      Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      3e230993
    • E
      net: fix IP early demux races · 5037e9ef
      Eric Dumazet 提交于
      David Wilder reported crashes caused by dst reuse.
      
      <quote David>
        I am seeing a crash on a distro V4.2.3 kernel caused by a double
        release of a dst_entry.  In ipv4_dst_destroy() the call to
        list_empty() finds a poisoned next pointer, indicating the dst_entry
        has already been removed from the list and freed. The crash occurs
        18 to 24 hours into a run of a network stress exerciser.
      </quote>
      
      Thanks to his detailed report and analysis, we were able to understand
      the core issue.
      
      IP early demux can associate a dst to skb, after a lookup in TCP/UDP
      sockets.
      
      When socket cache is not properly set, we want to store into
      sk->sk_dst_cache the dst for future IP early demux lookups,
      by acquiring a stable refcount on the dst.
      
      Problem is this acquisition is simply using an atomic_inc(),
      which works well, unless the dst was queued for destruction from
      dst_release() noticing dst refcount went to zero, if DST_NOCACHE
      was set on dst.
      
      We need to make sure current refcount is not zero before incrementing
      it, or risk double free as David reported.
      
      This patch, being a stable candidate, adds two new helpers, and use
      them only from IP early demux problematic paths.
      
      It might be possible to merge in net-next skb_dst_force() and
      skb_dst_force_safe(), but I prefer having the smallest patch for stable
      kernels : Maybe some skb_dst_force() callers do not expect skb->dst
      can suddenly be cleared.
      
      Can probably be backported back to linux-3.6 kernels
      Reported-by: NDavid J. Wilder <dwilder@us.ibm.com>
      Tested-by: NDavid J. Wilder <dwilder@us.ibm.com>
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5037e9ef
    • S
      sh_eth: uninline sh_eth_{write|read}() · 2274d375
      Sergei Shtylyov 提交于
      Commit 3365711d ("sh_eth: WARN on access to a register not implemented in
      in  a particular chip") added WARN_ON() to sh_eth_{read|write}(), thus making
      it  unacceptable for these functions to be *inline* anymore. Remove *inline*
      and move the functions from the header to the driver itself. Below   is our
      code economy with ARM gcc 4.7.3:
      
      $ size drivers/net/ethernet/renesas/sh_eth.o{~,}
         text	   data	    bss	    dec	    hex	filename
        32489	   1140	      0	  33629	   835d	drivers/net/ethernet/renesas/sh_eth.o~
        25413	   1140	      0	  26553	   67b9	drivers/net/ethernet/renesas/sh_eth.o
      Suggested-by: NBen Hutchings <ben.hutchings@codethink.co.uk>
      Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2274d375
    • C
      stmmac: dwmac-sunxi: Call exit cleanup function in probe error path · d856c16d
      Chen-Yu Tsai 提交于
      dwmac-sunxi has 2 callbacks that were called from stmmac_platform as
      part of the probe and remove sequences.
      
      Ater the conversion of dwmac-sunxi into a standalone platform driver,
      the .init function is called before calling into the stmmac driver
      core, but .exit is not called to clean up if stmmac returns an error.
      
      This patch fixes the probe error path. This properly cleans up and
      releases resources when the driver core fails to probe.
      
      Cc: Joachim Eastwood <manabian@gmail.com>
      Fixes: 9a9e9a1e ("stmmac: dwmac-sunxi: turn setup callback into a
      		      probe function")
      Signed-off-by: NChen-Yu Tsai <wens@csie.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d856c16d
    • H
      net: add validation for the socket syscall protocol argument · 79462ad0
      Hannes Frederic Sowa 提交于
      郭永刚 reported that one could simply crash the kernel as root by
      using a simple program:
      
      	int socket_fd;
      	struct sockaddr_in addr;
      	addr.sin_port = 0;
      	addr.sin_addr.s_addr = INADDR_ANY;
      	addr.sin_family = 10;
      
      	socket_fd = socket(10,3,0x40000000);
      	connect(socket_fd , &addr,16);
      
      AF_INET, AF_INET6 sockets actually only support 8-bit protocol
      identifiers. inet_sock's skc_protocol field thus is sized accordingly,
      thus larger protocol identifiers simply cut off the higher bits and
      store a zero in the protocol fields.
      
      This could lead to e.g. NULL function pointer because as a result of
      the cut off inet_num is zero and we call down to inet_autobind, which
      is NULL for raw sockets.
      
      kernel: Call Trace:
      kernel:  [<ffffffff816db90e>] ? inet_autobind+0x2e/0x70
      kernel:  [<ffffffff816db9a4>] inet_dgram_connect+0x54/0x80
      kernel:  [<ffffffff81645069>] SYSC_connect+0xd9/0x110
      kernel:  [<ffffffff810ac51b>] ? ptrace_notify+0x5b/0x80
      kernel:  [<ffffffff810236d8>] ? syscall_trace_enter_phase2+0x108/0x200
      kernel:  [<ffffffff81645e0e>] SyS_connect+0xe/0x10
      kernel:  [<ffffffff81779515>] tracesys_phase2+0x84/0x89
      
      I found no particular commit which introduced this problem.
      
      CVE: CVE-2015-8543
      Cc: Cong Wang <cwang@twopensource.com>
      Reported-by: N郭永刚 <guoyonggang@360.cn>
      Signed-off-by: NHannes Frederic Sowa <hannes@stressinduktion.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      79462ad0
    • T
      net: phy: mdio-mux: Check return value of mdiobus_alloc() · 20b08e1a
      Tobias Klauser 提交于
      mdiobus_alloc() might return NULL, but its return value is not
      checked in mdio_mux_init(). This could potentially lead to a NULL
      pointer dereference. Fix it by checking the return value
      
      Fixes: 0ca2997d ("netdev/of/phy: Add MDIO bus multiplexer support.")
      Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      20b08e1a
    • P
      openvswitch: fix trivial comment typo · e5f5d747
      Paolo Abeni 提交于
      The commit 33db4125 ("openvswitch: Rename LABEL->LABELS") left
      over an old OVS_CT_ATTR_LABEL instance, fix it.
      
      Fixes: 33db4125 ("openvswitch: Rename LABEL->LABELS")
      Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
      Acked-by: NJoe Stringer <joe@ovn.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e5f5d747
    • D
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf · 9e5be5bd
      David S. Miller 提交于
      Pablo Neira Ayuso says:
      
      ====================
      netfilter fixes for net
      
      The following patchset contains Netfilter fixes for you net tree,
      specifically for nf_tables and nfnetlink_queue, they are:
      
      1) Avoid a compilation warning in nfnetlink_queue that was introduced
         in the previous merge window with the simplification of the conntrack
         integration, from Arnd Bergmann.
      
      2) nfnetlink_queue is leaking the pernet subsystem registration from
         a failure path, patch from Nikolay Borisov.
      
      3) Pass down netns pointer to batch callback in nfnetlink, this is the
         largest patch and it is not a bugfix but it is a dependency to
         resolve a splat in the correct way.
      
      4) Fix a splat due to incorrect socket memory accounting with nfnetlink
         skbuff clones.
      
      5) Add missing conntrack dependencies to NFT_DUP_IPV4 and NFT_DUP_IPV6.
      
      6) Traverse the nftables commit list in reverse order from the commit
         path, otherwise we crash when the user applies an incremental update
         via 'nft -f' that deletes an object that was just introduced in this
         batch, from Xin Long.
      
      Regarding the compilation warning fix, many people have sent us (and
      keep sending us) patches to address this, that's why I'm including this
      batch even if this is not critical.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      9e5be5bd
  3. 14 12月, 2015 4 次提交
    • D
      net: Flush local routes when device changes vrf association · 7f49e7a3
      David Ahern 提交于
      The VRF driver cycles netdevs when an interface is enslaved or released:
      the down event is used to flush neighbor and route tables and the up
      event (if the interface was already up) effectively moves local and
      connected routes to the proper table.
      
      As of 4f823def the local route is left hanging around after a link
      down, so when a netdev is moved from one VRF to another (or released
      from a VRF altogether) local routes are left in the wrong table.
      
      Fix by handling the NETDEV_CHANGEUPPER event. When the upper dev is
      an L3mdev then call fib_disable_ip to flush all routes, local ones
      to.
      
      Fixes: 4f823def ("ipv4: fix to not remove local route on link down")
      Cc: Julian Anastasov <ja@ssi.bg>
      Signed-off-by: NDavid Ahern <dsa@cumulusnetworks.com>
      Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7f49e7a3
    • A
      net:hns: print MAC with %pM · 98900a80
      Andy Shevchenko 提交于
      printf() has a dedicated specifier to print MAC addresses. Use it instead of
      pushing each byte via stack.
      Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      98900a80
    • A
      net:hns: annotate IO address space properly · 946973a3
      Andy Shevchenko 提交于
      Mark address pointer with __iomem in the IO accessors.
      
      Otherwise we will get a sparse complain like following
      
      .../hns/hns_dsaf_reg.h:991:36: warning: incorrect type in argument 1 (different address spaces)
      .../hns/hns_dsaf_reg.h:991:36:    expected unsigned char [noderef] [usertype] <asn:2>*base
      .../hns/hns_dsaf_reg.h:991:36:    got void *base
      Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      946973a3
    • X
      netfilter: nf_tables: use reverse traversal commit_list in nf_tables_abort · a907e36d
      Xin Long 提交于
      When we use 'nft -f' to submit rules, it will build multiple rules into
      one netlink skb to send to kernel, kernel will process them one by one.
      meanwhile, it add the trans into commit_list to record every commit.
      if one of them's return value is -EAGAIN, status |= NFNL_BATCH_REPLAY
      will be marked. after all the process is done. it will roll back all the
      commits.
      
      now kernel use list_add_tail to add trans to commit, and use
      list_for_each_entry_safe to roll back. which means the order of adding
      and rollback is the same. that will cause some cases cannot work well,
      even trigger call trace, like:
      
      1. add a set into table foo  [return -EAGAIN]:
         commit_list = 'add set trans'
      2. del foo:
         commit_list = 'add set trans' -> 'del set trans' -> 'del tab trans'
      then nf_tables_abort will be called to roll back:
      firstly process 'add set trans':
                         case NFT_MSG_NEWSET:
                              trans->ctx.table->use--;
                              list_del_rcu(&nft_trans_set(trans)->list);
      
        it will del the set from the table foo, but it has removed when del
        table foo [step 2], then the kernel will panic.
      
      the right order of rollback should be:
        'del tab trans' -> 'del set trans' -> 'add set trans'.
      which is opposite with commit_list order.
      
      so fix it by rolling back commits with reverse order in nf_tables_abort.
      Signed-off-by: NXin Long <lucien.xin@gmail.com>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      a907e36d
  4. 12 12月, 2015 18 次提交
  5. 11 12月, 2015 2 次提交
    • P
      netfilter: nf_dup: add missing dependencies with NF_CONNTRACK · d3340b79
      Pablo Neira Ayuso 提交于
      CONFIG_NF_CONNTRACK=m
      CONFIG_NF_DUP_IPV4=y
      
      results in:
      
         net/built-in.o: In function `nf_dup_ipv4':
      >> (.text+0xd434f): undefined reference to `nf_conntrack_untracked'
      Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      d3340b79
    • P
      netfilter: nfnetlink: fix splat due to incorrect socket memory accounting in skbuff clones · bd678e09
      Pablo Neira Ayuso 提交于
      If we attach the sk to the skb from nfnetlink_rcv_batch(), then
      netlink_skb_destructor() will underflow the socket receive memory
      counter and we get warning splat when releasing the socket.
      
      $ cat /proc/net/netlink
      sk       Eth Pid    Groups   Rmem     Wmem     Dump     Locks     Drops     Inode
      ffff8800ca903000 12  0      00000000 -54144   0        0 2        0        17942
                                           ^^^^^^
      
      Rmem above shows an underflow.
      
      And here below the warning splat:
      
      [ 1363.815976] WARNING: CPU: 2 PID: 1356 at net/netlink/af_netlink.c:958 netlink_sock_destruct+0x80/0xb9()
      [...]
      [ 1363.816152] CPU: 2 PID: 1356 Comm: kworker/u16:1 Tainted: G        W       4.4.0-rc1+ #153
      [ 1363.816155] Hardware name: LENOVO 23259H1/23259H1, BIOS G2ET32WW (1.12 ) 05/30/2012
      [ 1363.816160] Workqueue: netns cleanup_net
      [ 1363.816163]  0000000000000000 ffff880119203dd0 ffffffff81240204 0000000000000000
      [ 1363.816169]  ffff880119203e08 ffffffff8104db4b ffffffff813d49a1 ffff8800ca771000
      [ 1363.816174]  ffffffff81a42b00 0000000000000000 ffff8800c0afe1e0 ffff880119203e18
      [ 1363.816179] Call Trace:
      [ 1363.816181]  <IRQ>  [<ffffffff81240204>] dump_stack+0x4e/0x79
      [ 1363.816193]  [<ffffffff8104db4b>] warn_slowpath_common+0x9a/0xb3
      [ 1363.816197]  [<ffffffff813d49a1>] ? netlink_sock_destruct+0x80/0xb9
      
      skb->sk was only needed to lookup for the netns, however we don't need
      this anymore since 633c9a84 ("netfilter: nfnetlink: avoid recurrent
      netns lookups in call_batch") so this patch removes this manual socket
      assignment to resolve this problem.
      Reported-by: NArturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
      Reported-by: NBen Hutchings <ben@decadent.org.uk>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      Tested-by: NArturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
      bd678e09
  6. 10 12月, 2015 1 次提交
  7. 09 12月, 2015 1 次提交