I've been looking into the hald unaligned trap messages on Alpha. I can report
that unaligned trap
messages are still being generated by hald. However, it is not hald's fault.
In my case the
messages are:
hald(14947): unaligned trap at 00000200002083cc: 000000011fa49391 28 3
hald(14947): unaligned trap at 00000200002083ec: 000000011fa49391 2c 1
The address of the code producing the trap is above 0x0000020000000000, and on
Alpha that is where
libraries are loaded. So note:
ldd hald
libdbus-glib-1.so.2 => /usr/lib/libdbus-glib-1.so.2 (0x0000020000042000)
libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0x000002000007a000)
libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00000200000de000)
libdbus-1.so.3 => /usr/lib/libdbus-1.so.3 (0x00000200001d2000)
libm.so.6.1 => /lib/ev67/libm.so.6.1 (0x0000020000232000)
libc.so.6.1 => /lib/ev67/libc.so.6.1 (0x00000200002ea000)
libnsl.so.1.1 => /lib/ev67/libnsl.so.1.1 (0x000002000046c000)
libselinux.so.1 => /lib/libselinux.so.1 (0x000002000049a000)
libpcre.so.3 => /usr/lib/libpcre.so.3 (0x00000200004cc000)
/lib/ld-linux.so.2 (0x0000020000000000)
libdl.so.2.1 => /lib/ev67/libdl.so.2.1 (0x0000020000506000)
and libdbus-1 has greatest address less than 0x00000200002083cc (the address of
code producing the
traps). This is the likely candidate. Indeed, on running gdb with debug
versions of hald and
libdbus-1 I was able to identify the offending line of code and it is in the
libdbus-1 library. I
have opened bug #502408 on the dbus and libdbus-1 packages, and once that is
resolved, hald will no
longer generate unaligned traps.
Cheers
Michael.
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