From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Dmitry Safonov <dima@arista.com>
Cc: linux-kernel@vger.kernel.org,
"Dmitry Safonov" <0x7f454c46@gmail.com>,
"Daniel Axtens" <dja@axtens.net>,
"Dmitry Vyukov" <dvyukov@google.com>,
"Mark Rutland" <mark.rutland@arm.com>,
"Michael Neuling" <mikey@neuling.org>,
"Mikulas Patocka" <mpatocka@redhat.com>,
"Nathan March" <nathan@gt.net>, "Pasi Kärkkäinen" <pasik@iki.fi>,
"Peter Hurley" <peter@hurleysoftware.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Rong, Chen" <rong.a.chen@intel.com>,
"Sergey Senozhatsky" <sergey.senozhatsky.work@gmail.com>,
"Tan Xiaojun" <tanxiaojun@huawei.com>,
"Tetsuo Handa" <penguin-kernel@I-love.SAKURA.ne.jp>,
"Jiri Slaby" <jslaby@suse.com>
Subject: Re: [PATCHv5 6/7] tty/ldsem: Add lockdep asserts for ldisc_sem
Date: Tue, 18 Sep 2018 15:49:54 +0200 [thread overview]
Message-ID: <20180918134954.GF23431@kroah.com> (raw)
In-Reply-To: <20180917235258.5719-7-dima@arista.com>
On Tue, Sep 18, 2018 at 12:52:57AM +0100, Dmitry Safonov wrote:
> Make sure under CONFIG_LOCKDEP that each change to line discipline
> is done with held write semaphor.
> Otherwise potential reader will have a good time dereferencing
> incomplete/uninitialized ldisc.
Note, I don't see patch 5/7 here, did it get lost? Please fix that up
for the next resend of this series.
thanks,
greg k-h
next prev parent reply other threads:[~2018-09-18 13:50 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-17 23:52 [PATCHv5 0/7] tty: Hold write ldisc sem in tty_reopen() Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 1/7] tty: Drop tty->count on tty_reopen() failure Dmitry Safonov
2018-09-18 13:41 ` Greg Kroah-Hartman
2018-09-18 14:15 ` Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 2/7] tty/ldsem: Wake up readers after timed out down_write() Dmitry Safonov
2018-09-18 13:43 ` Greg Kroah-Hartman
2018-09-18 14:12 ` Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 3/7] tty: Hold tty_ldisc_lock() during tty_reopen() Dmitry Safonov
2018-09-18 13:47 ` Greg Kroah-Hartman
2018-09-18 14:19 ` Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 4/7] tty: Simplify tty->count math in tty_reopen() Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 5/7] tty/ldsem: Convert to regular lockdep annotations Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 6/7] tty/ldsem: Add lockdep asserts for ldisc_sem Dmitry Safonov
2018-09-18 13:49 ` Greg Kroah-Hartman [this message]
2018-09-18 14:21 ` Dmitry Safonov
2018-09-17 23:52 ` [PATCHv5 7/7] tty/ldsem: Decrement wait_readers on timeouted down_read() Dmitry Safonov
2018-09-19 16:56 ` [PATCHv5 0/7] tty: Hold write ldisc sem in tty_reopen() Mikulas Patocka
2018-09-19 17:35 ` Mikulas Patocka
2018-09-19 17:45 ` Dmitry Safonov
2018-09-19 20:03 ` Mikulas Patocka
2018-09-19 20:21 ` Dmitry Safonov
2018-09-20 14:25 ` Mikulas Patocka
2018-10-15 13:37 ` Pasi Kärkkäinen
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