From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: michael@ellerman.id.au
Cc: Sachin Sant <sachinp@in.ibm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
linuxppc-dev@ozlabs.org
Subject: Re: Badness at drivers/char/tty_ldisc.c:210 during shutdown
Date: Mon, 22 Jun 2009 09:52:45 +0100 [thread overview]
Message-ID: <20090622095245.38edafdd@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <1245655421.4400.78.camel@concordia>
> > [c00000003cf6ba70] [c00000000040a3d0] .tty_ldisc_put+0xa4/0xf4 (unreliable)
> > [c00000003cf6bb10] [c00000000040a7c8] .tty_ldisc_reinit+0x38/0x80
> > [c00000003cf6bba0] [c00000000040b1d8] .tty_ldisc_hangup+0x190/0x260
> > [c00000003cf6bc40] [c000000000401090] .do_tty_hangup+0x188/0x4c0
> > [c00000003cf6bd20] [c000000000401440] .tty_vhangup_self+0x34/0x54
> > [c00000003cf6bdb0] [c00000000019236c] .sys_vhangup+0x38/0x58
> > [c00000003cf6be30] [c000000000008534] syscall_exit+0x0/0x40
> > Instruction dump:
> > 912b0088 4bcd17bd 60000000 e87e8008 7f44d378 481c04fd 60000000 801b0008
> > 7c09fe70 7d200278 7c004850 54000ffe <0b000000> 7f63db78 4bd7c98d 60000000
>
> Ah right, so this has check has just gone in, and the code in question
> has been rewritten somewhat just recently.
The check is to catch any cases where a line discipline is being freed up
but has a refcount that is non zero. I think I know what is going on here.
Alan
next prev parent reply other threads:[~2009-06-22 8:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-18 12:03 [PowerPC] " Sachin Sant
2009-06-22 6:43 ` Sachin Sant
2009-06-22 7:23 ` Michael Ellerman
2009-06-22 8:52 ` Alan Cox [this message]
2009-07-10 8:35 ` Sachin Sant
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