lkml.org 
[lkml]   [2008]   [May]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Kernel Panic when accessing NFS share and locking files
On Wed, 14 May 2008 19:27:36 +0200 Michael Lang <Michael.Lang@jackal-net.at> wrote:

> Hi,
>
> we encountered a serious problem, when using Solaris NFS (Server)
> accessing it with a CentOS5.1/RHEL5.1 client.
> There are more occurrences of the problem, one i felt over when tried to
> recreate a different one was, that a unprivileged
> User is able to Kernel Panic a machine with a few lines of code. I
> tested it with the result that 3 threads requesting a lock
> on the same file already cause the kernel panic. Since this is my first
> kernel bug request, and it's at least for my understandig
> a security problem, i will provide the code for recreation to a closed
> group only. Please point me to the right group ...
>
> Call Trace:
> [<ffffffff80012323>] __fput+0x94/0x198
> [<ffffffff8002e2d2>] sys_fcntl+0x2d0/0x2dc
> [<ffffffff8005b28d>] tracesys+0xd5/0xe0
> Code: 0f 0b 68 8a de 28 80 c2 c7 07 48 89 c3 48 8b 03 48 85 c0 75
> RIP [<ffffffff80027073>] locks_remove_flock+0xe4/0x122
> RSP <ffff81000be87e48>

Which kernel version is being used?


\
 
 \ /
  Last update: 2008-05-15 05:53    [W:0.614 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site