port-sparc64/39378: mpg123 loops busy

[martin%aprisoft.de@localhost]

>Number:         39378
>Category:       port-sparc64
>Synopsis:       mpg123 loops busy
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 19 13:25:00 +0000 2008
>Originator:     Martin Husemann
>Release:        NetBSD 4.99.72
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD nelly.aprisoft.de 4.99.72 NetBSD 4.99.72 (NELLY.MP) #46: Tue Aug 
19 09:34:11 CEST 2008 
martin%emmas.aprisoft.de@localhost:/nelly/usr/src/sys/arch/sparc64/compile/NELLY.MP
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:

Sometimes mpg123 (from pkgsrc) starts looping in a tight select loop for me:

   856      1 mpg123   RET   read 0, -18817/0xffffffffffffb67f
   856      1 mpg123   CALL  select(0x100,0xffffffffffffb648,0,0,0)
   856      1 mpg123   RET   select 1, -18872/0xffffffffffffb648
   856      1 mpg123   CALL  read(5,0xffffffffffffb67f,1)
   856      1 mpg123   GIO   fd 5 read 0 bytes
       ""
   856      1 mpg123   RET   read 0, -18817/0xffffffffffffb67f
   856      1 mpg123   CALL  select(0x100,0xffffffffffffb648,0,0,0)
   856      1 mpg123   RET   select 1, -18872/0xffffffffffffb648
   856      1 mpg123   CALL  read(5,0xffffffffffffb67f,1)
   856      1 mpg123   GIO   fd 5 read 0 bytes
       ""
   856      1 mpg123   RET   read 0, -18817/0xffffffffffffb67f
   856      1 mpg123   CALL  select(0x100,0xffffffffffffb648,0,0,0)
   856      1 mpg123   RET   select 1, -18872/0xffffffffffffb648
   856      1 mpg123   CALL  read(5,0xffffffffffffb67f,1)
   856      1 mpg123   GIO   fd 5 read 0 bytes
       ""

No idea if this is an application bug, a kernel problem or whatever.

>How-To-Repeat:
Not sure - happens "often" for me, but not reproducable. Never seen it on
non-sparc64 machines.

>Fix:
n/a