Latest -current complete lockup (tcp changes?)
Nicolas Blais
nb_root at videotron.ca
Sun Mar 25 20:20:22 UTC 2007
On March 25, 2007 03:49:46 pm Giorgos Keramidas wrote:
> On 2007-03-25 13:48, Nicolas Blais <nb_root at videotron.ca> wrote:
> > > The panic happens after a small amount of network activity, inside
> > > the TCP SACK code:
> > >
> > > -----------------------------------------------------------------------
> > >---- Disabling SACK lets me use my laptop again:
> > >
> > > net.inet.tcp.sack.enable=0
> > >
> > > without any panics.
> >
> > Same here. If you want to quickly crash your system,
> > net.inet.tcp.sack.enable=1 and start a torrent :)
> >
> > I couldn't find what was causing my desktop to crash until I STOPPED
> > trying to restart my torrent after boot :) . Though
> > net.inet.tcp.sack.enable=0 fixed it.
>
> Rebuilding a kernel will take a while here. If you can try reverting
> the following commit before I do, let me know if it fixes the panic.
>
> % andre 2007-03-23 18:33:21 UTC
> %
> % FreeBSD src repository
> %
> % Modified files:
> % sys/netinet tcp_input.c tcp_sack.c
> % Log:
> % Bring SACK option handling in tcp_dooptions() in line with all other
> % options and ajust users accordingly.
> %
> % Revision Changes Path
> % 1.326 +7 -4 src/sys/netinet/tcp_input.c
> % 1.35 +1 -0 src/sys/netinet/tcp_sack.c
Done.
I reverted tcp_input.c to 1.325 and tcp_sack.c to 1.34. I was able to start
many torrents without a panic. I believe the revert fixed the problem, as
previously, just starting 1 torrent would panic (unless
net.inet.tcp.sack.enable=0) , now I have 5 running fine.
Nicolas.
--
FreeBSD 7.0-CURRENT #18: Sun Mar 25 16:03:50 EDT 2007
nicblais at clk01a:/usr/obj/usr/src/sys/CLK01A
PGP? : http://plaintext.clkroot.net/security/nb_root.asc
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