Messages in this thread | | | Date | Sun, 22 Aug 2004 09:02:02 +0100 | From | Nuno Silva <> | Subject | Re: 2.6.8-rc4-bk1 problem: unregister_netdevice: waiting for ppp0 to become free. Usage count = 1 |
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David S. Miller wrote: | On Sun, 22 Aug 2004 03:13:55 +0100 | Nuno Silva <nuno.silva@vgertech.com> wrote: | | |>This problem was introduced between 2.6.8-rc2-bk11 and 2.6.8-rc4-bk1 and |>always happens. Right now I'm testing with 2.6.8.1 with a patch from Mr. |>Miller -- "cacheline-align qdisc data in qdisc_create()" (attached). | | | Does that patch fix the problem? |
Hi!
No, but that patch is necessary for me to use QoS at all, or the kernel oopses.
I was refering to that patch for you to know that's not the same problem. Sorry for not being 100% clear.
If you want to freeze your networking :-) you can do this:
remove pppd (or adjust the ppp0 interface name later) # killall pppd
# sleep 10
make a fony connection to 1.1.1.2 using /dev/null #pppd /dev/null connect /bin/true persist demand 1.1.1.1:1.1.1.2
# sleep 1
add a CBQ root to ppp0 (or ppp1, if you didn't killall and have another running) # tc qdisc add dev ppp0 root handle 1: cbq avpkt 1000 bandwidth 10mbit
ping the fony remote: # ping 1.1.1.2
kill pppd #killall pppd
Now check dmesg, you should get "unregister_netdevice: waiting for ppp0 to become free. Usage count = 1"
Another remark: In single user mode pppd died and system load is 0. In initlevel 3, pppd eats all my CPU... Don't know why.
Right now I'm testing 2.6.8.1-ck3 (because of that can't-burn-cdrom thing and other stuff) so the attached /proc/config.gz is somewhat non-vanilla, but this happens with 2.6.8-rc4-bk1[*] and above.
[*] this version is "bad" and 2.6.8-rc2-bk11 is "good". Didn't test with rc3...
As you can see in the .config I'm using the OLD POLICER.
As always, please request more info if you need it! :-)
Regards, Nuno Silva -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
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