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    SubjectRe: PROBLEM: 2.6.11-rc2 hangs on bridge shutdown (br0)
    Mirko Parthey wrote:

    >On Mon, Jan 31, 2005 at 05:22:02PM +0100, wrote:
    >
    >
    >>My Debian machine hangs during shutdown, with messages like this:
    >>unregister_netdevice: waiting for br0 to become free. Usage count = 1
    >>
    >>I narrowed it down to the command
    >> # brctl delbr br0
    >>which does not return in the circumstances shown below.
    >>
    >>The problem is reproducible with both 2.6.11-rc2 from kernel.org and the
    >>Debian kernel-image-2.6.10-1-686.
    >>[...]
    >>
    >>
    >
    >The problem was introduced between 2.6.8.1 and 2.6.9,
    >and it is still present in 2.6.11-rc2-bk9.
    >
    >Mirko
    >-
    >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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    >Please read the FAQ at http://www.tux.org/lkml/
    >
    >
    >
    Jep it appears in 2.6.8 and above. I don't know the process who's using it:

    Before shutdown:
    PID TTY TIME CMD
    1 ? 00:00:00 init
    2 ? 00:00:00 ksoftirqd/0
    3 ? 00:00:00 events/0
    4 ? 00:00:00 khelper
    9 ? 00:00:00 kthread
    19 ? 00:00:00 kacpid
    17 ? 00:00:00 vesafb
    100 ? 00:00:00 kblockd/0
    164 ? 00:00:00 pdflush
    165 ? 00:00:00 pdflush
    166 ? 00:00:00 kswapd0
    167 ? 00:00:00 aio/0
    168 ? 00:00:00 jfsIO
    169 ? 00:00:00 jfsCommit
    170 ? 00:00:00 jfsSync
    171 ? 00:00:00 xfslogd/0
    172 ? 00:00:00 xfsdatad/0
    173 ? 00:00:00 xfsbufd
    774 ? 00:00:00 kseriod
    862 ? 00:00:00 ata/0
    882 ? 00:00:00 kcryptd/0
    883 ? 00:00:00 kmirrord/0
    887 ? 00:00:00 xfssyncd
    939 ? 00:00:00 udevd
    1061 ? 00:00:00 devfsd
    1242 ? 00:00:00 khubd
    1616 ? 00:00:00 syslog-ng
    2562 ? 00:00:00 khpsbpkt
    2646 ? 00:00:00 knodemgrd_0
    3987 ? 00:00:00 crond
    4027 tty2 00:00:00 agetty
    4028 tty3 00:00:00 agetty
    4029 tty4 00:00:00 agetty
    4030 tty5 00:00:00 agetty
    4031 tty6 00:00:00 agetty
    4473 tty1 00:00:00 bash
    4553 tty1 00:00:00 ps

    And my System can't shutdown because of this bug. Currently disabling
    this checking function seems to be the only solution (see my diff).

    Matthias-Christian Ott
    -
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