Re: 2.3.51: ip_finish_output: bad owned skb = c3737480

From: Adam (adam@eax.com)
Date: Sat Mar 11 2000 - 13:01:11 EST

  • Next message: Michael H. Warfield: "Re: 2.3.51: ip_finish_output: bad owned skb = c3737480"

    > > > I believe it's netfilter that's doing this. It's been noisier
    > > > than a marble in a Prince Albert can since about 2.3.47 or so. Anyone
    > > > know WHY it suddenly got so noisy even with debugging disabled?
    >
    > > I just re-checked source code in 2.3.51 and AFAICT it is not possible
    > > to have any of those messages generated with debugging disabled
    > > as whole debugging stuff is "#ifdef CONFIG_NETFILTER_DEBUG".
    >
    > > Are you sure you *disabled* it? The most sure way to do it it is
    > > (form linux dir)
    >
    > I experienced that problem on an earlier version (2.3.48 or 2.3.49)
    > and have not gone back and rechecked it.
    >
    > > cp .config ..
    > > make distclean
    > > cp ../.config .
    > > make oldconfig
    > > make dep
    > > make bzImage
    > > make modules
    >
    > Made everything from scratch. Even re-unpacked the sources. But
    > it was not the latest version, so that may have been the problem then.

    Well, three more ideas. Before running 'make *Image' but after running
    oldconfig in the above example check for the following:

    1) check for NETFILTER_DEBUG in your .config file, it should look like
    this:

            [adam@pepsi linux]$ grep NETFILTER_DEBUG .config
            # CONFIG_NETFILTER_DEBUG is not set

    2) check the include/linux/autconf.h file

            [adam@pepsi linux]$ grep NETFILTER_DEBUG include/linux/autoconf.h
            #undef CONFIG_NETFILTER_DEBUG

    3) as final check you might want see what the actual o file contains. The
    first one below is compiled with CONFIG_NETFILTER_DEBUG enabled the second
    one is compiled with the said "feature" disabled.

    [adam@pepsi linux ]$ nm net/core/netfilter.o | grep debug
    00000338 t debug_print_hooks_ip
    000005dc T nf_debug_ip_finish_output2
    00000528 T nf_debug_ip_local_deliver
    000005a0 T nf_debug_ip_loopback_xmit
    [adam@pepsi linux ]$ nm net/core/netfilter.o | grep debug
    [adam@pepsi linux ]$

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