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alpine-devel

Re: [alpine-devel] Bug in rpc.mountd

From: Natanael Copa <ncopa_at_alpinelinux.org>
Date: Mon, 21 May 2012 15:27:38 +0200

On Mon, 21 May 2012 09:19:04 +0200
alex M <lonkaji_at_gmail.com> wrote:

> Hi,
>
> I upgade from 2.4.1 to 2.4.2 and now I got a real problem with the
> nfs daemon:
>
> [  482.292020] rpc.mountd[2043]: segfault at 7873d1d796c8 ip
> 0000786bd1b52c96 sp 00007ae3fb88a470 error 4 in
> libuClibc-0.9.33.2.so[786bd1b07000+6b000]
> [  482.292057] grsec: Segmentation fault occurred at 00007873d1d796c8
> in /usr/sbin/rpc.mountd[rpc.mountd:2043] uid/euid:0/0 gid/egid:0/0,
> parent /bin/busybox[init:1] uid/euid:0/0 gid/egid:0/0
> [  482.292087] grsec: denied resource overstep by requesting 4096 for
> RLIMIT_CORE against limit 0 for /usr/sbin/rpc.mountd[rpc.mountd:2043]
> uid/euid:0/0 gid/egid:0/0, parent /bin/busybox[init:1] uid/euid:0/0
> gid/egid:0/0
>
> That's a real problem since the main purpose of the computer running
> alpinelinux is to be a NFS server.
>
> I just want to report this bug and pray it can be fix quickly,
> otherwise I had to reinstall my box with something that don't broke
> NFS server.

Ok. I was able to reproduce. It works on 2.4.1, it segfaults on
x86_64 2.4.2 within uclibc code and it segfaults on startup.

What is interesting is that only relevant thing changed between 2.4.1
and 2.4.2 is the kernel.

I will try make a debug build here and generate a core dump.

Thanks!

-nc
 

> Regards.
>
>
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Received on Mon May 21 2012 - 15:27:38 GMT