From: Bob Breuer <breuerr@mc.net>
To: sparclinux@vger.kernel.org
Subject: Re: sunbmac panic when no card present
Date: Wed, 23 Mar 2005 16:21:42 +0000 [thread overview]
Message-ID: <42419796.2040805@mc.net> (raw)
In-Reply-To: <Pine.SOC.4.61.0503221030220.29185@math.ut.ee>
Meelis Roos wrote:
> PSR: 400010c6 PC: f00df4d0 NPC: f00df4d4 Y: 00000000 Not tainted
> PC: <tty_wakeup+0x4/0x64>
> %G: 00000000 f0034afc 00000001 404010e0 f0034aa0 00000000 fac12000 00000001
> %O: ffffffff 00000000 00000000 00000000 00000001 fb8d68a0 fac13b00 f00116dc
> RPC: <__udelay+0x1c/0x24>
> %L: fbe00f8c fbe00f34 d034fa4d 00000008 fb341006 fbe00f34 fac12000 f0011098
> %I: 00000000 00049000 00000003 00000924 00000004 00000004 fac13b68 f0034afc
> Caller[f0034afc]: tasklet_action+0x6c/0xb8
> Caller[f00347b0]: __do_softirq+0xa0/0xc4
> Caller[f0034814]: do_softirq+0x40/0x54
Looks like some tasklet is calling tty_wakeup with a NULL tty. I have
seen this before when using serial console, but didn't track it down
once I got a framebuffer console working.
Looking into it a little more now, uart_tasklet_action() in
drivers/serial/serial_core.c looks suspicious. Meelis, can you add a
BUG_ON(state->info->tty=NULL) in the middle of uart_tasklet_action()
and see if it dies on that instead?
Bob
next prev parent reply other threads:[~2005-03-23 16:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-22 8:32 sunbmac panic when no card present Meelis Roos
2005-03-23 2:42 ` Eric Brower
2005-03-23 2:55 ` Eric Brower
2005-03-23 3:02 ` David S. Miller
2005-03-23 5:58 ` Meelis Roos
2005-03-23 12:58 ` Meelis Roos
2005-03-23 14:55 ` Meelis Roos
2005-03-23 16:21 ` Bob Breuer [this message]
2005-03-23 21:17 ` Meelis Roos
2005-03-24 3:22 ` Bob Breuer
2005-03-24 6:37 ` Meelis Roos
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