From: Paolo Ornati <ornati@fastwebnet.it>
To: Paolo Ornati <ornati@fastwebnet.it>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: BUG: warning at kernel/lockdep.c:2427/check_flags()
Date: Thu, 8 Jun 2006 21:59:35 +0200 [thread overview]
Message-ID: <20060608215935.37c52bff@localhost> (raw)
In-Reply-To: <20060608213809.101161b0@localhost>
On Thu, 8 Jun 2006 21:38:09 +0200
Paolo Ornati <ornati@fastwebnet.it> wrote:
> After some hours running 2.6.17-rc6-mm1 + combo-patch I've got this:
>
> [12138.880686] BUG: warning at kernel/lockdep.c:2427/check_flags()
> [12138.880692]
> [12138.880693] Call Trace:
> [12138.880702] [<ffffffff80240374>] check_flags+0x86/0x201
> [12138.880707] [<ffffffff80240873>] lock_acquire+0x2f/0xa3
> [12138.880713] [<ffffffff8025fcae>] sys_munmap+0x5e/0xa7
> [12138.880719] [<ffffffff8020944e>] system_call+0x7e/0x83
> [12138.880723]
> [12138.880725] irq event stamp: 18146
> [12138.880728] hardirqs last enabled at (18145): [<ffffffff8049dffc>] _spin_unlock_irq+0x28/0x50
> [12138.880734] hardirqs last disabled at (18146): [<ffffffff8049d61e>] trace_hardirqs_off_thunk+0x35/0x67
> [12138.880742] softirqs last enabled at (18112): [<ffffffff8022c1ae>] __do_softirq+0xb2/0xba
> [12138.880748] softirqs last disabled at (18105): [<ffffffff8020a2c2>] call_softirq+0x1e/0x28
>
>
> I don't know if/how it is reproducible.
Wow, now I can reproduce it easly :)
Just run under "gdb" a program that segfaults:
void main(void)
{
*(int*)(0) = 1;
}
and it will trigger.
--
Paolo Ornati
Linux 2.6.17-rc6-mm1-lockdep on x86_64
next prev parent reply other threads:[~2006-06-08 20:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-08 19:38 BUG: warning at kernel/lockdep.c:2427/check_flags() Paolo Ornati
2006-06-08 19:59 ` Paolo Ornati [this message]
2006-06-08 20:02 ` Ingo Molnar
2006-06-09 8:59 ` [patch, -rc6-mm1] irqflags tracing: fix x86_64 entry/exit Ingo Molnar
2006-06-09 10:01 ` Paolo Ornati
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