core dump in pthread in mplayer in freebsd DomainU on Debian Linux Domain0

core dump in pthread in mplayer in freebsd DomainU on Debian Linux Domain0

[lepton]

Hi!
	After I have installed freebsd port for xen, I tried some
	software on freebsd. I am a newbie of freebsd, I meet some
	problems in mplayer, I don't know wether the problem was a
	freebsd-xen "bug" or a freebsd "bug".

	When I compiled mplayer, it complained about pthread about
	"Fatal error 'Thread has returned from _thread_switch' at line
	1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
	0)", it won't compile.

	Then I moved to use port to compile mplayer, then it can
	compile. I can use mplayer to play video without sound. But
	after I have configured mplayer to use nas to output sound.
	When I use mplayer, it will abort, and complain about 
	 "Fatal error 'Thread has returned from _thread_switch' at line
	1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
	0)"

	I have tried the following program (paste from configure script
	of mplayer)

	#include <pthread.h>
	void* func(void *arg) { return arg; }
	int main(void) { pthread_t tid; return pthread_create (&tid, 0,
	func, 0) == 0 ? 0 : 1; }

	when you use gcc -o test test.c -pthread
	it will complain the same thing about pthread.

	when you use gcc -o test test.c -lc_r, the problem dispeared.

	Is pthread is broken on freebsd? or freebsd-xen? or I have do
	something wrong?

Re: core dump in pthread in mplayer in freebsd DomainU on Debian Linux Domain0

[Kip Macy]

M:N support is currently busted on freebsd-xen. If you re-compile libc
to only use SYSTEM_SCOPE threads (one line makefile change), things
will work. Sorry for the inconvenience.

I'll get a little time to fix open issues when I get some servers this week.
 
                  -Kip

On 8/7/05, lepton <ytht.net@gmail.com> wrote:
> Hi!
>        After I have installed freebsd port for xen, I tried some
>        software on freebsd. I am a newbie of freebsd, I meet some
>        problems in mplayer, I don't know wether the problem was a
>        freebsd-xen "bug" or a freebsd "bug".
> 
>        When I compiled mplayer, it complained about pthread about
>        "Fatal error 'Thread has returned from _thread_switch' at line
>        1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
>        0)", it won't compile.
> 
>        Then I moved to use port to compile mplayer, then it can
>        compile. I can use mplayer to play video without sound. But
>        after I have configured mplayer to use nas to output sound.
>        When I use mplayer, it will abort, and complain about
>         "Fatal error 'Thread has returned from _thread_switch' at line
>        1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
>        0)"
> 
>        I have tried the following program (paste from configure script
>        of mplayer)
> 
>        #include <pthread.h>
>        void* func(void *arg) { return arg; }
>        int main(void) { pthread_t tid; return pthread_create (&tid, 0,
>        func, 0) == 0 ? 0 : 1; }
> 
>        when you use gcc -o test test.c -pthread
>        it will complain the same thing about pthread.
> 
>        when you use gcc -o test test.c -lc_r, the problem dispeared.
> 
>        Is pthread is broken on freebsd? or freebsd-xen? or I have do
>        something wrong?
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>

Re: core dump in pthread in mplayer in freebsd DomainU on Debian Linux Domain0

[lepton]

Thanks for your work! :)

On Sun, Aug 07, 2005 at 12:49:04PM -0700, Kip Macy wrote:
> M:N support is currently busted on freebsd-xen. If you re-compile libc
> to only use SYSTEM_SCOPE threads (one line makefile change), things
> will work. Sorry for the inconvenience.
> 
> I'll get a little time to fix open issues when I get some servers this week.
>  
>                   -Kip
> 
> On 8/7/05, lepton <ytht.net@gmail.com> wrote:
> > Hi!
> >        After I have installed freebsd port for xen, I tried some
> >        software on freebsd. I am a newbie of freebsd, I meet some
> >        problems in mplayer, I don't know wether the problem was a
> >        freebsd-xen "bug" or a freebsd "bug".
> > 
> >        When I compiled mplayer, it complained about pthread about
> >        "Fatal error 'Thread has returned from _thread_switch' at line
> >        1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
> >        0)", it won't compile.
> > 
> >        Then I moved to use port to compile mplayer, then it can
> >        compile. I can use mplayer to play video without sound. But
> >        after I have configured mplayer to use nas to output sound.
> >        When I use mplayer, it will abort, and complain about
> >         "Fatal error 'Thread has returned from _thread_switch' at line
> >        1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
> >        0)"
> > 
> >        I have tried the following program (paste from configure script
> >        of mplayer)
> > 
> >        #include <pthread.h>
> >        void* func(void *arg) { return arg; }
> >        int main(void) { pthread_t tid; return pthread_create (&tid, 0,
> >        func, 0) == 0 ? 0 : 1; }
> > 
> >        when you use gcc -o test test.c -pthread
> >        it will complain the same thing about pthread.
> > 
> >        when you use gcc -o test test.c -lc_r, the problem dispeared.
> > 
> >        Is pthread is broken on freebsd? or freebsd-xen? or I have do
> >        something wrong?
> > 
> > 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xensource.com
> > http://lists.xensource.com/xen-devel
> >

Re: core dump in pthread in mplayer in freebsd DomainU on Debian Linux Domain0

[lepton]

Thanks for your advice.

I have tried this and got it work.

The point is:

1. disable _thr_start_sig_daemon call in libpthread/thread/thr_kern.c
(this is a bug in libpthread, when we use -DSYSTEM_SCOPE_ONLY, we have
no this function)

2. recompile libpthread( ^_^ not libc, it should be a type error)
   you should change one line of Makefile.

On Sun, Aug 07, 2005 at 12:49:04PM -0700, Kip Macy wrote:
> M:N support is currently busted on freebsd-xen. If you re-compile libc
> to only use SYSTEM_SCOPE threads (one line makefile change), things
> will work. Sorry for the inconvenience.
> 
> I'll get a little time to fix open issues when I get some servers this week.
>  
>                   -Kip
> 
> On 8/7/05, lepton <ytht.net@gmail.com> wrote:
> >