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SubjectRe: 2.5.1 crashed during sending processes TERM signal
_PepeR_ wrote:
>
> Hello,
>
> At shutdown the system stops at the message "Sending all precesses TERM
> signal...". The isn't any messages of possible failure in logs.
> I'm using 2.5.1 kernel. If it's matter my system is an Athlon 1GHz on ECS
> K7S5A mainboard. If you need some detailed information please contact me
> on my e-mail 'coz I'm not subscribed to lkml.

No, this is generic, and is due to a recent patch (from -pre11 to -final)
that should have made Linux more standards-compliant. Linus already
reverted it in his tree so I assume the correctly-working shutdown
sequence will work again in 2.5.2-preX. zdiff'ing -pre11 from -final
patches I'd say it's this chunk (don't try to apply with 'patch', I
just cut'n'pasted from my xterm):

> --- v2.5.0/linux/kernel/signal.c Wed Nov 21 16:26:27 2001
> +++ linux/kernel/signal.c Fri Dec 14 12:25:24 2001
> @@ -649,8 +649,10 @@
> /*
> * kill_something_info() interprets pid in interesting ways just like kill(2).
> *
> - * POSIX specifies that kill(-1,sig) is unspecified, but what we have
> - * is probably wrong. Should make it like BSD or SYSV.
> + * POSIX (2001) specifies "If pid is -1, sig shall be sent to all processes
> + * (excluding an unspecified set of system processes) for which the process
> + * has permission to send that signal."
> + * So, probably the process should also signal itself.
> */
>
> static int kill_something_info(int sig, struct siginfo *info, int pid)
> @@ -663,7 +665,7 @@
>
> read_lock(&tasklist_lock);
> for_each_task(p) {
> - if (p->pid > 1 && p != current) {
> + if (p->pid > 1) {
> int err = send_sig_info(sig, info, p);
> ++count;
> if (err != -EPERM)


I see the same behavior on RedHat 7.2.

--alessandro

"we live as we dream alone / to break the spell we mix with the others
we were not born in isolation / but sometimes it seems that way"
(R.E.M., live intro to 'World Leader Pretend')
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