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    SubjectRe: Strange Error in 2.0.33 w/ RH5.0

    On Wed, 18 Feb 1998, Theodore Y. Ts'o wrote:

    > Date: Tue, 17 Feb 1998 15:45:28 -0600 (CST)
    > From: Tom Tom Tom <>
    > Warning: dev (02:01) tty->count(1) != #fd's(2) in tty_open
    > Warning: dev (03:01) tty->count(2) != #fd's(3) in tty_open
    > Warning: dev (03:01) tty->count(3) != #fd's(5) in tty_open
    > Warning: dev (03:01) tty->count(3) != #fd's(6) in release_dev
    > Are you using PPP or SLIP by any chance? Alexey Kuznetsov has recently
    > pointed out a race condition in the tty hangup processing which hits if
    > you are using PPP or SLIP line discplines. I'm currently considering
    > how to fix this....
    > Most of the time the messages seem to be harmless, and the kernel will
    > recover, but it is a problem.

    I'm sporadically getting these messages, too. I never noticed any problems
    resulting of this:

    Feb 18 12:50:34 Galois kernel: Warning: dev (03:19) tty->count(1) != #fd's(2) in do_tty_hangup

    The affected machine has no PPP or SLIP logins, but many users are login
    in on this machine. Every kernel since a long time seems to have this

    > - Ted


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