Re: 2.6.23-rc4-mm1: unpingable box and NULL dereference at tcp_rto_min()

2007-09-02 Thread Alexey Dobriyan
On Sun, Sep 02, 2007 at 01:52:45PM -0700, Andrew Morton wrote:
> > On Sun, 2 Sep 2007 06:36:19 +0400 Alexey Dobriyan <[EMAIL PROTECTED]> wrote:
> > The bad news is something knocked off box from the net, then panicked it:
> 
> Yeah, the net tree has been quite bad lately.  Unusually bad - it's usually
> one of the good ones.
> 
> It also breaks a lot of the net driver work in several other trees (I dropped
> git-ixgbe.patch wholesale because of this).  But there isn't a lot we can
> do about that.  

OK, I'm currently running with "dst entry can be NULL" fix from net
tree, so far it's fine.
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Re: 2.6.23-rc4-mm1: unpingable box and NULL dereference at tcp_rto_min()

2007-09-02 Thread Andrew Morton
> On Sun, 2 Sep 2007 06:36:19 +0400 Alexey Dobriyan <[EMAIL PROTECTED]> wrote:
> On Fri, Aug 31, 2007 at 09:58:22PM -0700, Andrew Morton wrote:
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc4/2.6.23-rc4-mm1/
> > - dynticks-for-x86_64 has returned
> 
> Good news is that, contary to popular belief, -mm is not horrible piece
> of crap and NO_HZ on x86_64 worked here straight away.

variable.  It at least Works For Me before it goes out.

> 
> The bad news is something knocked off box from the net, then panicked it:

Yeah, the net tree has been quite bad lately.  Unusually bad - it's usually
one of the good ones.

It also breaks a lot of the net driver work in several other trees (I dropped
git-ixgbe.patch wholesale because of this).  But there isn't a lot we can
do about that.  
-
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Re: 2.6.23-rc4-mm1: unpingable box and NULL dereference at tcp_rto_min()

2007-09-02 Thread Andrew Morton
 On Sun, 2 Sep 2007 06:36:19 +0400 Alexey Dobriyan [EMAIL PROTECTED] wrote:
 On Fri, Aug 31, 2007 at 09:58:22PM -0700, Andrew Morton wrote:
  ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc4/2.6.23-rc4-mm1/
  - dynticks-for-x86_64 has returned
 
 Good news is that, contary to popular belief, -mm is not horrible piece
 of crap and NO_HZ on x86_64 worked here straight away.

variable.  It at least Works For Me before it goes out.

 
 The bad news is something knocked off box from the net, then panicked it:

Yeah, the net tree has been quite bad lately.  Unusually bad - it's usually
one of the good ones.

It also breaks a lot of the net driver work in several other trees (I dropped
git-ixgbe.patch wholesale because of this).  But there isn't a lot we can
do about that.  
-
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the body of a message to [EMAIL PROTECTED]
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Re: 2.6.23-rc4-mm1: unpingable box and NULL dereference at tcp_rto_min()

2007-09-02 Thread Alexey Dobriyan
On Sun, Sep 02, 2007 at 01:52:45PM -0700, Andrew Morton wrote:
  On Sun, 2 Sep 2007 06:36:19 +0400 Alexey Dobriyan [EMAIL PROTECTED] wrote:
  The bad news is something knocked off box from the net, then panicked it:
 
 Yeah, the net tree has been quite bad lately.  Unusually bad - it's usually
 one of the good ones.
 
 It also breaks a lot of the net driver work in several other trees (I dropped
 git-ixgbe.patch wholesale because of this).  But there isn't a lot we can
 do about that.  

OK, I'm currently running with dst entry can be NULL fix from net
tree, so far it's fine.
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Re: 2.6.23-rc4-mm1: unpingable box and NULL dereference at tcp_rto_min()

2007-09-01 Thread Satyam Sharma


On Sun, 2 Sep 2007, Alexey Dobriyan wrote:
> 
> Unable to handle kernel NULL pointer dereference at 0039 RIP: 
>  [] tcp_rto_min+0xc/0x20

tcp_rto_min() lacks a check-for-NULL. You want 5c127c58ae9bf196 from
the net-2.6.git tree -- so this will be gone in -rc6.

> P.S.: uh-oh, it's "[TCP] Allow minnimum RTO ..." aka 05bb1fad1cde

Yup, it came from this last commit in net-2.6 before -rc5.

[ Considering it's pretty core code (and thus the oops fairly easily
  reproducible), I initially thought this must've come from net-2.6.24.
  I suspect lot of testers might hit this, so would be wise to put that
  patch up as a hot-fix ? ]


Satyam
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Re: 2.6.23-rc4-mm1: unpingable box and NULL dereference at tcp_rto_min()

2007-09-01 Thread Satyam Sharma


On Sun, 2 Sep 2007, Alexey Dobriyan wrote:
 
 Unable to handle kernel NULL pointer dereference at 0039 RIP: 
  [803b6f7c] tcp_rto_min+0xc/0x20

tcp_rto_min() lacks a check-for-NULL. You want 5c127c58ae9bf196 from
the net-2.6.git tree -- so this will be gone in -rc6.

 P.S.: uh-oh, it's [TCP] Allow minnimum RTO ... aka 05bb1fad1cde

Yup, it came from this last commit in net-2.6 before -rc5.

[ Considering it's pretty core code (and thus the oops fairly easily
  reproducible), I initially thought this must've come from net-2.6.24.
  I suspect lot of testers might hit this, so would be wise to put that
  patch up as a hot-fix ? ]


Satyam
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