netdev - Re: Bug, kernel panic, NULL dereference , cleanup_once / icmp_route_lookup.clone.19.clone / nat , 2.6.39-rc7-git11

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Date:	Wed, 18 May 2011 12:27:25 +0300
From:	Denys Fedoryshchenko <denys@...p.net.lb>
To:	<netdev@...r.kernel.org>
Subject: Re: Bug, kernel panic, NULL dereference , cleanup_once / icmp_route_lookup.clone.19.clone / nat , 2.6.39-rc7-git11

 On Wed, 18 May 2011 01:16:29 +0300, Denys Fedoryshchenko wrote:
> Just got recently. 32Bit, PPPoE NAS, shapers, firewall, NAT
> Kernel i mention in subject, 2.6.39-rc7-git11
> If required i can give more information
>
> sharanal (sorry for ugly name) is libpcap based traffic analyser,
> sure userspace
>
 Here is some info, i hope it will be a little useful

 (gdb)  l *(cleanup_once + 0x49)
 0xc02e85cc is in cleanup_once (include/linux/list.h:88).
 83       * This is only for internal list manipulation where we know
 84       * the prev/next entries already!
 85       */
 86      static inline void __list_del(struct list_head * prev, struct 
 list_head * next)
 87      {
 88              next->prev = prev;
 89              prev->next = next;
 90      }
 91
 92      /**

 (gdb)  l *(inet_getpeer + 0x2ab)
 0xc02e8ae8 is in inet_getpeer (net/ipv4/inetpeer.c:530).
 525             if (base->total >= inet_peer_threshold)
 526                     /* Remove one less-recently-used entry. */
 527                     cleanup_once(0, stack);
 528
 529             return p;
 530     }
 531
 532     static int compute_total(void)
 533     {
 534             return v4_peers.total + v6_peers.total;


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