Re: failed to set signal flags properly for ast()

From: Robert Watson (rwatson_at_freebsd.org)
Date: 02/29/04

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    Date: Sat, 28 Feb 2004 19:30:08 -0500 (EST)
To: Poul-Henning Kamp <phk@phk.freebsd.dk>

    On Sat, 28 Feb 2004, Robert Watson wrote:

    >
    > On Sat, 28 Feb 2004, Poul-Henning Kamp wrote:
    >
    > > On a -current kernel from this morning, I ran a "make -j 12 -s
    > > buildworld".
    > >
    > > At some point I pressed ctrl-Z and it started spitting tons of
    > > failed to set signal flags properly for ast() out on the serial
    > > console, but after about a minute it stopped and the system continued.
    >
    > I just experienced something identical. I set up an NFS root box to try
    > to reproduce what Alan Cox reported, and hit Ctrl-Z to check which
    > version of the kernel I was running during the build. Immediatly got a
    > lot of the following:
    >
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    > failed to set signal flags properly for ast()
    >
    > It hasn't finished that here yet, but if it's going to stop it might
    > take a bit as the serial console is 9600bps. This box was basically
    > running a buildworld -j 6 with /usr/src in NFS, and /usr/obj in
    > swap-backed md. No threaded applications running, etc.

    As a follow-up, it kept spinning printing that message until I
    foregrounded the build again, at which point it went away.

    Robert N M Watson FreeBSD Core Team, TrustedBSD Projects
    robert@fledge.watson.org Senior Research Scientist, McAfee Research

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