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Re: kern/43318: Recent -current asserts with USB activity

The following reply was made to PR kern/43318; it has been noted by GNATS.

From: Manuel Bouyer <>
Subject: Re: kern/43318: Recent -current asserts with USB activity
Date: Wed, 19 May 2010 18:32:26 +0200

 On Wed, May 19, 2010 at 04:05:03PM +0000, Scott Ellis wrote:
 >  On 5/18/2010 12:31 PM, Manuel Bouyer wrote:
 >  > Can you see what syn_cache_add+0x4ca points to in kernel sources ?
 >  > Maybe try reverting tcp_input.c 1.304 and see if it helps ...
 >  >
 >  Reverting to tcp_input.c 1.303 seems to have solved my problem.  ~5 hour 
 >  max uptime with little USB activity has turned into 16 hours with 
 >  significant umass activity (I did a dry-run of the system backup, which 
 >  is what repeatedly killed the system before).
 >  Thanks for the clue.  I'm not cluefull enough to know WHY the changes in 
 >  1.304 are a problem, but at least now it's clear that it is the problem. :-)
 Then can you try the attached patch, and report if the
 printf("syn dropped\n") does show up in the kernel log ?
 Also, it should fix the assert problem.
 Manuel Bouyer <>
      NetBSD: 26 ans d'experience feront toujours la difference

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