From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Sergey Vlasov <vsu@altlinux.ru>
Cc: Linus Torvalds <torvalds@osdl.org>, ierdnah <ierdnah@go.ro>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: kernel oops!
Date: Mon, 24 Jan 2005 15:44:50 +0000 [thread overview]
Message-ID: <1106509496.6148.8.camel@localhost.localdomain> (raw)
In-Reply-To: <20050123161512.149cc9de.vsu@altlinux.ru>
On Sul, 2005-01-23 at 13:15, Sergey Vlasov wrote:
> On Sat, 22 Jan 2005 22:43:50 -0800 (PST) Linus Torvalds wrote:
> tty_poll() grabs ldisc reference for the tty it was called with;
> however, in this case pty_chars_in_buffer() accesses another ldisc
> (tty->link->ldisc) without grabbing a reference to it. BTW, many other
> pty_* functions do the same thing.
Correct - the pty code still relies on all sorts of "lock_kernel"
assumptions so its probably very very racy. It can't however easily use
tty_ldisc_()
functions that wait because the lock ordering is indeterminate.
next prev parent reply other threads:[~2005-01-24 16:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-22 23:36 kernel oops! ierdnah
2005-01-23 6:43 ` Linus Torvalds
2005-01-23 12:29 ` ierdnah
2005-01-23 17:51 ` Linus Torvalds
2005-01-24 19:21 ` ierdnah
2005-01-27 22:47 ` ierdnah
2005-01-27 23:35 ` Linus Torvalds
2005-01-28 20:00 ` ierdnah
2005-01-28 20:28 ` Linus Torvalds
2005-01-28 22:22 ` ierdnah
2005-01-23 13:15 ` Sergey Vlasov
2005-01-23 18:22 ` Linus Torvalds
2005-01-24 15:44 ` Alan Cox
2005-01-24 17:58 ` Linus Torvalds
2005-01-24 18:09 ` Alan Cox
2005-01-24 15:44 ` Alan Cox [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-01-07 23:15 Kernel Oops? Stoyan Gaydarov
2008-01-07 23:30 ` Alan Cox
2008-01-09 2:25 ` Stoyan Gaydarov
2008-01-09 3:02 ` Alan Cox
2008-01-09 3:24 ` Stoyan Gaydarov
2008-01-10 23:05 ` Jesper Juhl
2008-01-07 23:34 ` Jesper Juhl
2004-09-17 14:05 kernel Oops!!!! Jysuis Parla
2004-09-17 14:05 Jysuis Parla
2004-09-17 17:30 ` Gene Heskett
[not found] <3A08FA77.703BCC07@rdstm.ro>
2000-11-08 16:29 ` Kernel oops! Venky
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