Date: Mon, 14 Mar 2005 11:41:53 +0100 From: Antoine Brodin <antoine.brodin@laposte.net> To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> Cc: current@FreeBSD.org Subject: Re: A pair of LORs Message-ID: <20050314114153.6a362e17.antoine.brodin@laposte.net> In-Reply-To: <Pine.BSF.4.53.0503141020001.2078@e0-0.zab2.int.zabbadoz.net> References: <200503131851.j2DIpKhv001089@lorne.arm.org> <20050314110417.0705f268.antoine.brodin@laposte.net> <Pine.BSF.4.53.0503141020001.2078@e0-0.zab2.int.zabbadoz.net>
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"Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> wrote: > On Mon, 14 Mar 2005, Antoine Brodin wrote: > > > Derek Tattersall <dlt@mebtel.net> wrote: > > > This happened on a 6.0 current system supped and built this > > > morning. I didn't see this recorded on Herr Zeeb's page, so > > > perhaps somebody has some clues to offer? > > [snip] > > > lock order reversal > > > 1st 0xc26f1300 so_rcv (so_rcv) @ > > > /usr/src/sys/kern/uipc_socket.c:1256 2nd 0xc23a96c4 skc0 (network > > > driver) @ /usr/src/sys/pci/if_sk.c:1112 > > > > For the second LOR, you can try the patch available at: > > http://sources.zabbadoz.net/freebsd/patchset/if_sk.c-HEAD-20050303-01.diff > > if you are going to try that please use the [1-4]of4 patches from > same directory and apply in ascending order. > > But I doubt it will help with this LOR (but testing would be good > anyway;) > > An interesting thing to know would be if you have sk0 and sk1 (dual > port) ? I think it can definitively help: with the patch, sk_jfree uses a leaf mutex and no longer uses the network driver mutex. Cheers, Antoine
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