linux-kernel - Re: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub

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Date:	Fri, 25 May 2007 07:30:11 +1000 (EST)
From:	Srihari Vijayaraghavan <sriharivijayaraghavan@...oo.com.au>
To:	Christoph Lameter <clameter@....com>
Cc:	Hugh Dickins <hugh@...itas.com>, Ingo Molnar <mingo@...e.hu>,
	Oliver Xymoron <oxymoron@...te.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub

--- Christoph Lameter <clameter@....com> wrote:
[...]
> You need to be root to do this. Sorry.

Of course, I tried it as root also.

(Kernel hg commit a4c9979b8d42 is 2.6.22-rc2 + all commits available as of a
few minutes ago)

[root@...ora7 ~]# whoami
root

[root@...ora7 ~]# uname -a
Linux fedora7 2.6.22-rc2-a4c9979b8d42 #1 SMP Fri May 25 06:32:20 EST 2007
x86_64 x86_64 x86_64 GNU/Linux

[root@...ora7 ~]# egrep -i 'slub' /proc/cmdline
/boot/config-2.6.22-rc2-a4c9979b8d42
/proc/cmdline:ro root=LABEL=/1234 slub_debug
/boot/config-2.6.22-rc2-a4c9979b8d42:CONFIG_SLUB_DEBUG=y
/boot/config-2.6.22-rc2-a4c9979b8d42:CONFIG_SLUB=y

[root@...ora7 ~]# md5sum /home/hari/linux-2.6/Documentation/vm/slabinfo.c
07a832596203afba9739c27daa059174 
/home/hari/linux-2.6/Documentation/vm/slabinfo.c

[root@...ora7 ~]# gcc --version
gcc (GCC) 4.1.2 20070502 (Red Hat 4.1.2-12)
...

[root@...ora7 ~]# gcc -o /usr/local/bin/slabinfo
/home/hari/linux-2.6/Documentation/vm/slabinfo.c ; echo $?
0

[root@...ora7 ~]# /usr/local/bin/slabinfo -v > slabinfo.txt; echo $?
0

[root@...ora7 ~]# ll slabinfo.txt
-rw-r--r-- 1 root root 0 2007-05-25 07:11 slabinfo.txt

[root@...ora7 ~]# /usr/local/bin/slabinfo > slabinfo_without_v.txt; echo $?
0

[root@...ora7 ~]# ll slabinfo_without_v.txt
-rw-r--r-- 1 root root 7932 2007-05-25 07:14 slabinfo_without_v.txt

I know slabinfo_without_v might not be good enough for you. For completeness,
I attach it here anyway.

(I couldn't attach the 0 byte slabinfo.txt, otherwise I'd've given you that
also. It's unbearable to lose an enormous 0 byte of information.)

Thanks



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View attachment "slabinfo_without_v.txt" of type "text/plain" (7933 bytes)