netdev - Re: Re: Kernel panic in fib_rules

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <382091272797186@web84.yandex.ru>
Date:	Sun, 02 May 2010 14:46:26 +0400
From:	"\"Oleg A. Arkhangelsky\"" <sysoleg@...dex.ru>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: Re: Kernel panic in fib_rules_lookup (kernel 2.6.32)

Hello,

09.03.10, 17:09, "Eric Dumazet" <eric.dumazet@...il.com>:

> Le mardi 09 mars 2010 à 10:44 +0300, "Oleg A. Arkhangelsky" a écrit :
>  > Hello,
>  > 
>  > Got this kernel panic tomorrow. This PC is rather heavy loaded router with BGP full view (> 300K routes).
>  > We're using FIB_TRIE. Last time we got similar panic about 1 month ago. Please, let me know if you
>  > need additional information to debug (e.g. objdump). Thanks!
>  > 
>  > Mar  9 10:08:55 bras-1 kernel: BUG: unable to handle kernel NULL pointer dereference at (null)
>  > Mar  9 10:08:55 bras-1 kernel: IP: [] fib_rules_lookup+0xa2/0xd0
>  > Mar  9 10:08:55 bras-1 kernel: *pde = 00000000
>  > Mar  9 10:08:55 bras-1 kernel: Thread overran stack, or stack corrupted
>  
>  Hmm...

Got the same panic, at the same place (fib_rules_lookup+0xa2/0xd0). Looks like the problem with NULL dereference is somewhere in list_for_each_entry_rcu macro. But I don't understand how this can be.

Any thoughts? :(

-- 
wbr, Oleg.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html