From: Keith Owens <kaos@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: BUG_ON(irqs_disabled()) in smp_call_function - cant boot
Date: Fri, 30 Apr 2004 14:52:28 +0000 [thread overview]
Message-ID: <3330.1083336748@ocs3.ocs.com.au> (raw)
In-Reply-To: <20040430144454.GA8719@sgi.com>
On Fri, 30 Apr 2004 09:44:54 -0500,
Jack Steiner <steiner@sgi.com> wrote:
>There was a BUG_ON(irqs_disabled()) recently added to
>smp_call_function().
>
>This check is hit during boot. Looks like there is a vfree in
>sg_add that is done with interrupts disabled. This trips the BUG_ON.
>
>The check is valid, but I wonder how many other places will trip the bug
>check.
Calling vfree() with interrupts disabled eventually leads to
smp_call_function() with interrupts disabled, which is a deadlock just
waiting to happen.
prev parent reply other threads:[~2004-04-30 14:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-30 14:44 BUG_ON(irqs_disabled()) in smp_call_function - cant boot Jack Steiner
2004-04-30 14:52 ` Keith Owens [this message]
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