1. 05 12月, 2017 11 次提交
  2. 04 12月, 2017 6 次提交
    • R
      Documentation: fix docs build error after source file removed · 9956cfef
      Randy Dunlap 提交于
      The pci/htirq.c file was removed so remove it from the documentation
      file also.
      
      Error: Cannot open file ../drivers/pci/htirq.c
      WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -export ../drivers/pci/htirq.c' failed with return code 2
      
      Fixes: fd2fa6c1 ("x86/PCI: Remove unused HyperTransport interrupt support")
      Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
      Signed-off-by: NJonathan Corbet <corbet@lwn.net>
      9956cfef
    • D
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf · c2eb6d07
      David S. Miller 提交于
      Daniel Borkmann says:
      
      ====================
      pull-request: bpf 2017-12-02
      
      The following pull-request contains BPF updates for your *net* tree.
      
      The main changes are:
      
      1) Fix a compilation warning in xdp redirect tracepoint due to
         missing bpf.h include that pulls in struct bpf_map, from Xie.
      
      2) Limit the maximum number of attachable BPF progs for a given
         perf event as long as uabi is not frozen yet. The hard upper
         limit is now 64 and therefore the same as with BPF multi-prog
         for cgroups. Also add related error checking for the sample
         BPF loader when enabling and attaching to the perf event, from
         Yonghong.
      
      3) Specifically set the RLIMIT_MEMLOCK for the test_verifier_log
         case, so that the test case can always pass and not fail in
         some environments due to too low default limit, also from
         Yonghong.
      
      4) Fix up a missing license header comment for kernel/bpf/offload.c,
         from Jakub.
      
      5) Several fixes for bpftool, among others a crash on incorrect
         arguments when json output is used, error message handling
         fixes on unknown options and proper destruction of json writer
         for some exit cases, all from Quentin.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c2eb6d07
    • D
      Merge branch 'tcp-cb-selinux-corruption' · e4485c74
      David S. Miller 提交于
      Eric Dumazet says:
      
      ====================
      tcp: add tcp_v4_fill_cb()/tcp_v4_restore_cb()
      
      James Morris reported kernel stack corruption bug that
      we tracked back to commit 971f10ec ("tcp: better TCP_SKB_CB
      layout to reduce cache line misses")
      
      First patch needs to be backported to kernels >= 3.18,
      while second patch needs to be backported to kernels >= 4.9, since
      this was the time when inet_exact_dif_match appeared.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e4485c74
    • D
      tcp: use IPCB instead of TCP_SKB_CB in inet_exact_dif_match() · b4d1605a
      David Ahern 提交于
      After this fix : ("tcp: add tcp_v4_fill_cb()/tcp_v4_restore_cb()"),
      socket lookups happen while skb->cb[] has not been mangled yet by TCP.
      
      Fixes: a04a480d ("net: Require exact match for TCP socket lookups if dif is l3mdev")
      Signed-off-by: NDavid Ahern <dsahern@gmail.com>
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b4d1605a
    • E
      tcp: add tcp_v4_fill_cb()/tcp_v4_restore_cb() · eeea10b8
      Eric Dumazet 提交于
      James Morris reported kernel stack corruption bug [1] while
      running the SELinux testsuite, and bisected to a recent
      commit bffa72cf ("net: sk_buff rbnode reorg")
      
      We believe this commit is fine, but exposes an older bug.
      
      SELinux code runs from tcp_filter() and might send an ICMP,
      expecting IP options to be found in skb->cb[] using regular IPCB placement.
      
      We need to defer TCP mangling of skb->cb[] after tcp_filter() calls.
      
      This patch adds tcp_v4_fill_cb()/tcp_v4_restore_cb() in a very
      similar way we added them for IPv6.
      
      [1]
      [  339.806024] SELinux: failure in selinux_parse_skb(), unable to parse packet
      [  339.822505] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff81745af5
      [  339.822505]
      [  339.852250] CPU: 4 PID: 3642 Comm: client Not tainted 4.15.0-rc1-test #15
      [  339.868498] Hardware name: LENOVO 10FGS0VA1L/30BC, BIOS FWKT68A   01/19/2017
      [  339.885060] Call Trace:
      [  339.896875]  <IRQ>
      [  339.908103]  dump_stack+0x63/0x87
      [  339.920645]  panic+0xe8/0x248
      [  339.932668]  ? ip_push_pending_frames+0x33/0x40
      [  339.946328]  ? icmp_send+0x525/0x530
      [  339.958861]  ? kfree_skbmem+0x60/0x70
      [  339.971431]  __stack_chk_fail+0x1b/0x20
      [  339.984049]  icmp_send+0x525/0x530
      [  339.996205]  ? netlbl_skbuff_err+0x36/0x40
      [  340.008997]  ? selinux_netlbl_err+0x11/0x20
      [  340.021816]  ? selinux_socket_sock_rcv_skb+0x211/0x230
      [  340.035529]  ? security_sock_rcv_skb+0x3b/0x50
      [  340.048471]  ? sk_filter_trim_cap+0x44/0x1c0
      [  340.061246]  ? tcp_v4_inbound_md5_hash+0x69/0x1b0
      [  340.074562]  ? tcp_filter+0x2c/0x40
      [  340.086400]  ? tcp_v4_rcv+0x820/0xa20
      [  340.098329]  ? ip_local_deliver_finish+0x71/0x1a0
      [  340.111279]  ? ip_local_deliver+0x6f/0xe0
      [  340.123535]  ? ip_rcv_finish+0x3a0/0x3a0
      [  340.135523]  ? ip_rcv_finish+0xdb/0x3a0
      [  340.147442]  ? ip_rcv+0x27c/0x3c0
      [  340.158668]  ? inet_del_offload+0x40/0x40
      [  340.170580]  ? __netif_receive_skb_core+0x4ac/0x900
      [  340.183285]  ? rcu_accelerate_cbs+0x5b/0x80
      [  340.195282]  ? __netif_receive_skb+0x18/0x60
      [  340.207288]  ? process_backlog+0x95/0x140
      [  340.218948]  ? net_rx_action+0x26c/0x3b0
      [  340.230416]  ? __do_softirq+0xc9/0x26a
      [  340.241625]  ? do_softirq_own_stack+0x2a/0x40
      [  340.253368]  </IRQ>
      [  340.262673]  ? do_softirq+0x50/0x60
      [  340.273450]  ? __local_bh_enable_ip+0x57/0x60
      [  340.285045]  ? ip_finish_output2+0x175/0x350
      [  340.296403]  ? ip_finish_output+0x127/0x1d0
      [  340.307665]  ? nf_hook_slow+0x3c/0xb0
      [  340.318230]  ? ip_output+0x72/0xe0
      [  340.328524]  ? ip_fragment.constprop.54+0x80/0x80
      [  340.340070]  ? ip_local_out+0x35/0x40
      [  340.350497]  ? ip_queue_xmit+0x15c/0x3f0
      [  340.361060]  ? __kmalloc_reserve.isra.40+0x31/0x90
      [  340.372484]  ? __skb_clone+0x2e/0x130
      [  340.382633]  ? tcp_transmit_skb+0x558/0xa10
      [  340.393262]  ? tcp_connect+0x938/0xad0
      [  340.403370]  ? ktime_get_with_offset+0x4c/0xb0
      [  340.414206]  ? tcp_v4_connect+0x457/0x4e0
      [  340.424471]  ? __inet_stream_connect+0xb3/0x300
      [  340.435195]  ? inet_stream_connect+0x3b/0x60
      [  340.445607]  ? SYSC_connect+0xd9/0x110
      [  340.455455]  ? __audit_syscall_entry+0xaf/0x100
      [  340.466112]  ? syscall_trace_enter+0x1d0/0x2b0
      [  340.476636]  ? __audit_syscall_exit+0x209/0x290
      [  340.487151]  ? SyS_connect+0xe/0x10
      [  340.496453]  ? do_syscall_64+0x67/0x1b0
      [  340.506078]  ? entry_SYSCALL64_slow_path+0x25/0x25
      
      Fixes: 971f10ec ("tcp: better TCP_SKB_CB layout to reduce cache line misses")
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Reported-by: NJames Morris <james.l.morris@oracle.com>
      Tested-by: NJames Morris <james.l.morris@oracle.com>
      Tested-by: NCasey Schaufler <casey@schaufler-ca.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      eeea10b8
    • L
      Linux 4.15-rc2 · ae64f9bd
      Linus Torvalds 提交于
      ae64f9bd
  3. 03 12月, 2017 23 次提交