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Date: Fri, 30 Nov 2007 19:01:52 -0500 (EST)
From: Daniel Eischen <deischen@freebsd.org>
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To: "Arno J. Klaassen" <arno@heho.snv.jussieu.fr>
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Cc: nate@yogotech.com, java@freebsd.org, julian@freebsd.org,
	davidxu@freebsd.org
Subject: Re: cvs commit: src/lib/libkse/thread thr_kern.c
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On Fri, 1 Dec 2007, Arno J. Klaassen wrote:

> Daniel Eischen <deischen@freebsd.org> writes:
>
>> On Fri, 30 Nov 2007, Arno J. Klaassen wrote:
>>
>> [ ... ]
>>
>>> (gdb) where
>>> #0  0x000000080075d151 in pthread_sigmask () from /usr/lib/libkse.so.3
>>> #1  0x000000080075d103 in sigprocmask () from /usr/lib/libkse.so.3
>>> #2  0x000000080076c423 in pthread_kill () from /usr/lib/libkse.so.3
>>> #3  0x0000000800758f29 in fork () from /usr/lib/libkse.so.3
>>> #4  0x0000000801e43158 in jdk_fork_wrapper ()
>>
>> This isn't really telling me anything because fork() doesn't call
>> pthread_kill(), and pthread_kill() doesn't call sigprocmask().
>
> ah, make install strips debug symbols?
>
> Anyway, I reran with "LD_LIBRARY_PATH=/usr/obj/files/bsd/src7/lib/libkse /usr/local/jdk1.5.0/bin/java_g "
>
> That gives :
>
> #0  0x000000080075d151 in _pthread_sigmask (how=3, set=0x813cc6e10, oset=0x0)
>    at /files/bsd/src7/lib/libkse/thread/thr_sigmask.c:52
> #1  0x000000080075d103 in _sigprocmask (how=3, set=0x813cc6e10, oset=0x0)
>    at /files/bsd/src7/lib/libkse/thread/thr_sigprocmask.c:49
> #2  0x000000080076c423 in _kse_single_thread (curthread=0x813cc6c00)
>    at /files/bsd/src7/lib/libkse/thread/thr_kern.c:361
> #3  0x0000000800758f29 in _fork ()
>    at /files/bsd/src7/lib/libkse/thread/thr_fork.c:101
> #4  0x0000000801e43158 in jdk_fork_wrapper ()
>    at ../../../src/solaris/native/java/lang/UNIXProcess_md.c:437
>
> Hope this is better

Yes, this would seem to be a kernel problem, as _get_curthread()
seems to be returning garbage.  This is a libkse MD function,
that relies on %gs (for i386/amd64) to point to something
that was initialized in the parent.

Julian, David, got any ideas?

-- 
DE