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  1. 23 Mar, 2008 5 commits
  3. 22 Mar, 2008 1 commit
    • Thomas Gleixner's avatar
      x86: revert: reserve dma32 early for gart · 9e963048
      Thomas Gleixner authored 
      Revert

commit f62f1fc9
Author: Yinghai Lu <yhlu.kernel@gmail.com>
Date:   Fri Mar 7 15:02:50 2008 -0800

    x86: reserve dma32 early for gart

The patch has a dependency on bootmem modifications which are not .25
material that late in the -rc cycle. The problem which is addressed by
the patch is limited to machines with 256G and more memory booted with
NUMA disabled. This is not a .25 regression and the audience which is
affected by this problem is very limited, so it's safer to do the
revert than pulling in intrusive bootmem changes right now.
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      9e963048
  5. 21 Mar, 2008 26 commits
  7. 20 Mar, 2008 8 commits
    • YOSHIFUJI Hideaki's avatar
      [IPV6] KCONFIG: Fix description about IPV6_TUNNEL. · 38fe999e
      YOSHIFUJI Hideaki authored 
      Based on notice from "Colin" <colins@sjtu.edu.cn>.
Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      38fe999e
    • Patrick McHardy's avatar
      [TCP]: Fix shrinking windows with window scaling · 607bfbf2
      Patrick McHardy authored 
      When selecting a new window, tcp_select_window() tries not to shrink
the offered window by using the maximum of the remaining offered window
size and the newly calculated window size. The newly calculated window
size is always a multiple of the window scaling factor, the remaining
window size however might not be since it depends on rcv_wup/rcv_nxt.
This means we're effectively shrinking the window when scaling it down.


The dump below shows the problem (scaling factor 2^7):

- Window size of 557 (71296) is advertised, up to 3111907257:

IP 172.2.2.3.33000 > 172.2.2.2.33000: . ack 3111835961 win 557 <...>

- New window size of 514 (65792) is advertised, up to 3111907217, 40 bytes
  below the last end:

IP 172.2.2.3.33000 > 172.2.2.2.33000: . 3113575668:3113577116(1448) ack 3111841425 win 514 <...>

The number 40 results from downscaling the remaining window:

3111907257 - 3111841425 = 65832
65832 / 2^7 = 514
65832 % 2^7 = 40

If the sender uses up the entire window before it is shrunk, this can have
chaotic effects on the connection. When sending ACKs, tcp_acceptable_seq()
will notice that the window has been shrunk since tcp_wnd_end() is before
tp->snd_nxt, which makes it choose tcp_wnd_end() as sequence number.
This will fail the receivers checks in tcp_sequence() however since it
is before it's tp->rcv_wup, making it respond with a dupack.

If both sides are in this condition, this leads to a constant flood of
ACKs until the connection times out.

Make sure the window is never shrunk by aligning the remaining window to
the window scaling factor.
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      607bfbf2
    • Jarek Poplawski's avatar
      netpoll: zap_completion_queue: adjust skb->users counter · 8a455b08
      Jarek Poplawski authored 
      zap_completion_queue() retrieves skbs from completion_queue where they have
zero skb->users counter.  Before dev_kfree_skb_any() it should be non-zero
yet, so it's increased now.
Reported-and-tested-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarJarek Poplawski <jarkao2@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8a455b08
    • Fabio Checconi's avatar
      bridge: use time_before() in br_fdb_cleanup() · 2bec008c
      Fabio Checconi authored 
      In br_fdb_cleanup() next_timer and this_timer are in jiffies, so they
should be compared using the time_after() macro.
Signed-off-by: default avatarFabio Checconi <fabio@gandalf.sssup.it>
Signed-off-by: default avatarStephen Hemminger <stephen.hemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2bec008c
    • David S. Miller's avatar
      [TG3]: Fix build warning on sparc32. · 7582a335
      David S. Miller authored 
      Sparc MAC address support should be protected consistently
with CONFIG_SPARC, but there was a stray CONFIG_SPARC64
case.

Bump driver version and release date.

Reported by Andrew Morton.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7582a335
    • Pavel Machek's avatar
      MAINTAINERS: bluez-devel is subscribers-only · 781c2844
      Pavel Machek authored 
      Signed-off-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      781c2844
    • Pavel Emelyanov's avatar
      audit: netlink socket can be auto-bound to pid other than current->pid (v2) · 75c0371a
      Pavel Emelyanov authored 
      From:	Pavel Emelyanov <xemul@openvz.org>

This patch is based on the one from Thomas.

The kauditd_thread() calls the netlink_unicast() and passes 
the audit_pid to it. The audit_pid, in turn, is received from 
the user space and the tool (I've checked the audit v1.6.9) 
uses getpid() to pass one in the kernel. Besides, this tool 
doesn't bind the netlink socket to this id, but simply creates 
it allowing the kernel to auto-bind one.

That's the preamble.

The problem is that netlink_autobind() _does_not_ guarantees
that the socket will be auto-bound to the current pid. Instead
it uses the current pid as a hint to start looking for a free
id. So, in case of conflict, the audit messages can be sent
to a wrong socket. This can happen (it's unlikely, but can be)
in case some task opens more than one netlink sockets and then
the audit one starts - in this case the audit's pid can be busy
and its socket will be bound to another id.

The proposal is to introduce an audit_nlk_pid in audit subsys,
that will point to the netlink socket to send packets to. It
will most often be equal to audit_pid. The socket id can be 
got from the skb's netlink CB right in the audit_receive_msg.
The audit_nlk_pid reset to 0 is not required, since all the
decisions are taken based on audit_pid value only.

Later, if the audit tools will bind the socket themselves, the
kernel will have to provide a way to setup the audit_nlk_pid
as well.

A good side effect of this patch is that audit_pid can later 
be converted to struct pid, as it is not longer safe to use 
pid_t-s in the presence of pid namespaces. But audit code still 
uses the tgid from task_struct in the audit_signal_info and in
the audit_filter_syscall.
Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Acked-by: default avatarEric Paris <eparis@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      75c0371a
    • Andre Noll's avatar
      [NET]: Fix permissions of /proc/net · 4f42c288
      Andre Noll authored 
      commit e9720acd ([NET]: Make /proc/net a symlink on /proc/self/net (v3))
broke ganglia and probably other applications that read /proc/net/dev.

This is due to the change of permissions of /proc/net that was
introduced in that commit.

Before: dr-xr-xr-x 5 root root 0 Mar 19 11:30 /proc/net
After: dr-xr--r-- 5 root root 0 Mar 19 11:29 /proc/self/net

This patch restores the permissions to the old value which makes
ganglia happy again.

Pavel Emelyanov says:

	This also broke the postfix, as it was reported in bug #10286
	and described in detail by Benjamin.
Signed-off-by: default avatarAndre Noll <maan@systemlinux.org>
Acked-by: default avatarPavel Emelyanov <xemul@openvz.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4f42c288
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