Date: Thu, 10 Aug 2006 19:35:12 +0300 From: "Gleb Kozyrev" <gkozyrev@ukr.net> To: "Robert Watson" <rwatson@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: panic: sodealloc(): so_count 1 Message-ID: <003201c6bc9a$f42c0970$0321080a@Gleb> References: <000301c6bc58$d678e930$0321080a@Gleb> <20060810113709.P45647@fledge.watson.org>
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Robert Watson wrote to "Gleb Kozyrev" <gkozyrev@ukr.net> on Thu, 10 Aug 2006 11:40:03 +0100 (BST):
>> i386 7.0-CURRENT #0: Sun Aug 6 repeatedly panics when doing some default
>> periodic jobs at 3 AM.
RW> Could you file a PR for this, and forward me the PR receipt? I'd be
RW> happy to investigate this problem. I've seen one or two other reports
RW> of so_count 1, but not in a way that's reproduceable. The output of the
RW> following DDB commands would be most helpful:
RW> show pcpu
RW> show allpcpu
RW> alltrace
RW> show alllocks
Here you are: kern/101763
RW> It may also be useful to set up serial GDB, in order to do things like
RW> print the contents of *so in sodealloc().
I didn't manage to do it.
It looks like kernel switches to remote gdb mode successfully but kgdb
fails to communicate.
This place in socreate() looks weird to me:
=========Beginning of the citation==============
so->so_count = 1;
error = (*prp->pr_usrreqs->pru_attach)(so, proto, td);
if (error) {
sodealloc(so);
return (error);
}
=========The end of the citation================
It will panic on error.
Wasn't the intent here to return the error code?
--
With best regards, Gleb Kozyrev.
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