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From: f6bvp <f6bvp@free.fr>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	linux-kernel@vger.kernel.org,
	Linux Netdev List <netdev@vger.kernel.org>,
	linux-hams@vger.kernel.org
Subject: Re: [AX25] inconsistent lock state
Date: Fri, 17 Jun 2011 17:26:34 +0200	[thread overview]
Message-ID: <4DFB722A.7040304@free.fr> (raw)
In-Reply-To: <20110617135147.GA3470@linux-mips.org>

Hi Ralf,

I wanted to check FPAC ROSE application behaviour when Ethernet link was 
shutdown.
To do this I removed the ethernet connector !
I agree this was a very agressive action.

73s de Bernard, f6bvp

Le 17/06/2011 15:51, Ralf Baechle a écrit :
> On Fri, Jun 17, 2011 at 03:36:15PM +0200, Arnd Bergmann wrote:
>
> (Removed Jarek from cc; his email bounces.)
>
>> The message hints that disc_data_lock is aquired with softirqs disabled,
>> but does not itself disable softirqs, which can in rare circumstances
>> lead to a deadlock.
>>
>> Does this fix it?
> If so, drivers/net/hamradio.c, function sp_get() would probably need the
> equivalent fix.  Same for drivers/net/ppp_async.c:ap_get() and sp_get() in
> drivers/net/ppp_synctty.c.
>
>    Ralf

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WARNING: multiple messages have this Message-ID (diff)
From: f6bvp <f6bvp@free.fr>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	linux-kernel@vger.kernel.org,
	Linux Netdev List <netdev@vger.kernel.org>,
	linux-hams@vger.kernel.org
Subject: Re: [AX25] inconsistent lock state
Date: Fri, 17 Jun 2011 17:26:34 +0200	[thread overview]
Message-ID: <4DFB722A.7040304@free.fr> (raw)
In-Reply-To: <20110617135147.GA3470@linux-mips.org>

Hi Ralf,

I wanted to check FPAC ROSE application behaviour when Ethernet link was 
shutdown.
To do this I removed the ethernet connector !
I agree this was a very agressive action.

73s de Bernard, f6bvp

Le 17/06/2011 15:51, Ralf Baechle a écrit :
> On Fri, Jun 17, 2011 at 03:36:15PM +0200, Arnd Bergmann wrote:
>
> (Removed Jarek from cc; his email bounces.)
>
>> The message hints that disc_data_lock is aquired with softirqs disabled,
>> but does not itself disable softirqs, which can in rare circumstances
>> lead to a deadlock.
>>
>> Does this fix it?
> If so, drivers/net/hamradio.c, function sp_get() would probably need the
> equivalent fix.  Same for drivers/net/ppp_async.c:ap_get() and sp_get() in
> drivers/net/ppp_synctty.c.
>
>    Ralf


  parent reply	other threads:[~2011-06-17 15:26 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-19 13:38 kernel BUG at kernel/timer.c:951! Bernard Pidoux
2009-12-19 17:40 ` Jarek Poplawski
2009-12-20 18:04   ` Bernard Pidoux
2010-01-15 14:46     ` Bernard Pidoux
2010-01-15 20:36       ` [PATCH net-2.6] ax25: netrom: rose: Fix timer oopses Jarek Poplawski
2010-01-16  9:04         ` David Miller
2010-02-11 16:34           ` [PATCH 07/13] net: ax25: use seq_hlist_foo() helpers Bernard Pidoux
2011-06-16 20:23         ` [AX25] inconsistent lock state f6bvp
2011-06-16 20:23           ` f6bvp
2011-06-17 13:28           ` Ralf Baechle
2011-06-17 13:36           ` Arnd Bergmann
2011-06-17 13:51             ` Ralf Baechle
2011-06-17 14:11               ` Arnd Bergmann
2011-06-17 15:31                 ` f6bvp
2011-06-17 15:31                   ` f6bvp
2011-06-25 15:51                 ` f6bvp
2011-06-25 15:51                   ` f6bvp
2011-06-25 16:39                   ` Ralf Baechle DL5RB
2011-07-01 13:00                     ` Bernard F6BVP
2011-07-01 13:00                       ` Bernard F6BVP
2011-07-01 21:28                       ` [PATCH] 6pack,mkiss: fix lock inconsistency Arnd Bergmann
2011-07-02  0:30                         ` David Miller
2012-10-21 15:18                   ` [NetRom] possible circular locking dependency detected Bernard f6bvp
2012-10-21 15:18                     ` Bernard f6bvp
2011-06-17 15:26               ` f6bvp [this message]
2011-06-17 15:26                 ` [AX25] inconsistent lock state f6bvp
2011-06-16 20:29         ` khubd [ INFO: possible circular locking dependency detected ] f6bvp
2011-06-16 20:40         ` [AX25] inconsistent lock state f6bvp
2011-06-16 20:40           ` f6bvp
2022-01-25 11:46           ` [AX25] ipv6 incompatible with AX.25 Bernard Pidoux
2022-01-25 18:14             ` David Ranch
2022-01-31 12:04               ` [ROSE] rose socket destination address empty in connect tests Bernard Pidoux , f6bvp
     [not found]               ` <724d87c5-3029-702a-32c9-b64677a2da0e@free.fr>
2022-01-31 17:36                 ` [AX25] ipv6 incompatible with AX.25 Bernard Pidoux , f6bvp
2022-02-06 21:12             ` [AX25] unreleased sockets after disconnecting Bernard Pidoux , f6bvp
2022-02-20  9:18               ` Thomas Osterried
2011-07-07 13:31         ` Question with axudp Bernard, f6bvp
2011-07-07 21:43           ` Robert Thoelen

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