From: "David S. Miller" <davem@redhat.com>
To: shmulik.hen@intel.com
Cc: dane@aiinet.com, bonding-devel@lists.sourceforge.net,
bonding-announce@lists.sourceforge.net, netdev@oss.sgi.com,
linux-kernel@vger.kernel.org, linux-net@vger.kernel.org,
torvalds@transmeta.com, mingo@redhat.com, kuznet@ms2.inr.ac.ru
Subject: Re: BUG or not? GFP_KERNEL with interrupts disabled.
Date: Thu, 27 Mar 2003 05:43:57 -0800 (PST) [thread overview]
Message-ID: <20030327.054357.17283294.davem@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0303271406230.7106-100000@jrslxjul4.npdj.intel.com>
From: shmulik.hen@intel.com
Date: Thu, 27 Mar 2003 15:32:02 +0200 (IST)
Further more, holding a lock_irq doesn't mean bottom halves are disabled
too, it just means interrupts are disabled and no *new* softirq can be
queued. Consider the following situation:
I think local_bh_enable() should check irqs_disabled() and honour that.
What you are showing here, that BH's can run via local_bh_enable()
even when IRQs are disabled, is a BUG().
IRQ disabling is meant to be stronger than softint disabling.
Ingo/Linus?
next prev parent reply other threads:[~2003-03-27 13:43 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E791C176A6139242A988ABA8B3D9B38A01085638@hasmsx403.iil.intel.com>
2003-03-27 13:32 ` BUG or not? GFP_KERNEL with interrupts disabled shmulik.hen
2003-03-27 13:43 ` David S. Miller [this message]
2003-03-27 14:11 ` Trond Myklebust
2003-03-27 14:12 ` David S. Miller
2003-03-27 17:22 ` Linus Torvalds
2003-03-27 17:55 ` David S. Miller
2003-03-27 18:04 ` Linus Torvalds
2003-03-27 18:07 ` David S. Miller
2004-10-10 1:38 ` udp_recvmsg: possible bug causing infinite hang? Chad N. Tindel
2004-10-10 1:45 ` David S. Miller
2004-10-10 1:54 ` Chad N. Tindel
2004-10-12 5:32 ` Nagendra Singh Tomar
2004-10-12 5:32 ` Chad N. Tindel
2004-10-12 6:08 ` Nagendra Singh Tomar
2004-10-12 8:56 ` Henrik Nordstrom
[not found] <3B785392832ED71192AE00D0B7B0D75B539668@aimail.aiinet.com>
2003-03-27 19:02 ` BUG or not? GFP_KERNEL with interrupts disabled Dan Eble
2003-03-27 19:08 ` Linus Torvalds
2003-03-27 19:10 ` David S. Miller
2003-03-27 19:22 ` Linus Torvalds
2003-03-27 19:39 ` David S. Miller
2003-03-27 19:52 ` Robert Love
2003-03-27 19:53 ` David S. Miller
2003-03-27 20:55 ` David S. Miller
2003-03-27 21:29 ` David S. Miller
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