From: Andrew Morton <akpm@linux-foundation.org>
To: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
viro@ftp.linux.org.uk, linux-ext4@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.21-git4 Scheduler, NOHZ, VFS bugs
Date: Fri, 4 May 2007 11:01:58 -0700 [thread overview]
Message-ID: <20070504110158.d2808170.akpm@linux-foundation.org> (raw)
In-Reply-To: <463B5D63.2030109@googlemail.com>
On Fri, 04 May 2007 18:20:51 +0200 Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
> I ran this script tree times,
>
> #! /bin/sh
>
> for i in `find /sys/ -type f`
> do
> echo "wyświetlam $i"
> sudo cat $i > /dev/null
> done
>
> First run - scheduler bug
> Second run - NOHZ bug
> Third - VFS bug
>
> Hmmmm...
>
> [93298.252601] BUG: at /mnt/md0/devel/linux-git/kernel/sched.c:3241 add_preempt_count()
> [93298.260334] [<c0105039>] show_trace_log_lvl+0x1a/0x2f
> [93298.265507] [<c0105720>] show_trace+0x12/0x14
> [93298.269974] [<c01057d2>] dump_stack+0x16/0x18
> [93298.274434] [<c011d18a>] add_preempt_count+0x89/0x8b
> [93298.279501] [<c0126492>] irq_enter+0xd/0x2e
> [93298.283788] [<c0114c1e>] smp_apic_timer_interrupt+0x2a/0x84
> [93298.289458] [<c0104b2b>] apic_timer_interrupt+0x33/0x38
> [93298.294783] [<c0257b79>] show_uevent+0x58/0xcd
> [93298.299329] =======================
> [93390.468056] NOHZ: local_softirq_pending 22
> [93447.105850] NOHZ: local_softirq_pending 22
> [93450.332884] BUG: unable to handle kernel paging request at virtual address 3e343c0c
> [93450.340626] printing eip:
> [93450.343333] c018e2bc
> [93450.345520] *pde = 00000000
> [93450.348314] Oops: 0000 [#1]
Nice. What was the last file which it read before crashing?
Are you able to consistently crash it by reading just that file?
next prev parent reply other threads:[~2007-05-04 18:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-04 16:20 2.6.21-git4 Scheduler, NOHZ, VFS bugs Michal Piotrowski
2007-05-04 17:01 ` Michal Piotrowski
2007-05-04 18:01 ` Andrew Morton [this message]
[not found] ` <6bffcb0e0705050625m6bb05dc0ne0864ec2dba19256@mail.gmail.com>
2007-05-05 18:04 ` random bug generator (was: 2.6.21-git4 Scheduler, NOHZ, VFS bugs) Michal Piotrowski
2007-05-05 18:07 ` Kay Sievers
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