yyy@yyy-laptop:~$ LIBGL_DRIVERS_DIR=/usr/lib/dri-classic gdb /usr/lib/xscreensaver/pipes
GNU gdb (GDB) 7.1-ubuntu
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For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/lib/xscreensaver/pipes...(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop noprint
Signal        Stop	Print	Pass to program	Description
SIG33         No	No	Yes		Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/lib/xscreensaver/pipes 
[Thread debugging using libthread_db enabled]
pipes: ../../radeon/radeon_cs_gem.c:129: cs_gem_write_reloc: Assertion `boi->space_accounted' failed.

Program received signal SIGABRT, Aborted.
0x0012d422 in __kernel_vsyscall ()
(gdb) backtrace full
#0  0x0012d422 in __kernel_vsyscall ()
No symbol table info available.
#1  0x0041d651 in raise () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0x00420a82 in abort () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#3  0x00416718 in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#4  0x0092ee71 in cs_gem_write_reloc (cs=0x83c2460, bo=0x8089750, read_domain=6, write_domain=4, flags=0) at ../../radeon/radeon_cs_gem.c:129
        reloc = <value optimized out>
        idx = 8993654
        i = 134659472
        __PRETTY_FUNCTION__ = "cs_gem_write_reloc"
#5  0x0092f910 in radeon_cs_write_reloc (cs=0x83c2460, bo=0x8089750, read_domain=0, write_domain=4, flags=0) at ../../radeon/radeon_cs.c:20
No locals.
#6  0x006c954c in r300_emit_cb_setup (r300=0x808d9a8, bo=0x8089750, offset=0, format=3, cpp=4, pitch=2432) at r300_cmdbuf.c:405
        cbpitch = 12583520
        __PRETTY_FUNCTION__ = "r300_emit_cb_setup"
        __FUNCTION__ = "r300_emit_cb_setup"
#7  0x006c97ae in emit_cb_offset_atom (ctx=0x8096768, atom=0x808e8ac) at r300_cmdbuf.c:429
        r300 = 0x808d9a8
        rrb = 0x83d3f38
        offset = 6
#8  0x006dcccd in radeon_emit_atom (radeon=0x808d9a8) at radeon_common.c:1033
        dwords = 27
#9  radeonEmitAtoms (radeon=0x808d9a8) at radeon_common.c:1057
        atom = 0x808e8ac
#10 radeonEmitState (radeon=0x808d9a8) at radeon_common.c:1100
        __FUNCTION__ = "radeonEmitState"
#11 0x006d3d1d in r300_swtcl_flush (ctx=0x8096768, current_offset=0) at r300_swtcl.c:666
        rmesa = 0x808d9a8
        __FUNCTION__ = "r300_swtcl_flush"
#12 0x006de1f7 in rcommon_flush_last_swtcl_prim (ctx=0x8096768) at radeon_dma.c:413
        current_offset = 6
        rmesa = 0x808d9a8
        __FUNCTION__ = "rcommon_flush_last_swtcl_prim"
        __PRETTY_FUNCTION__ = "rcommon_flush_last_swtcl_prim"
#13 0x006cdf99 in r300InvalidateState (ctx=0x8096768, new_state=285213697) at r300_state.c:2320
        r300 = 0x0
#14 0x00768e77 in _mesa_update_state_locked (ctx=0x8096768) at main/state.c:665
        new_state = <value optimized out>
        prog_flags = <value optimized out>
#15 0x007698aa in _mesa_update_state (ctx=0x8096768) at main/state.c:676
No locals.
#16 0x006d9b56 in radeonMakeCurrent (driContextPriv=0x807be50, driDrawPriv=0x80896d0, driReadPriv=0x80896d0) at radeon_common_context.c:758
        radeon = 0x808d9a8
        drfb = 0x83d3b08
        readfb = 0x83d3b08
        __FUNCTION__ = "radeonMakeCurrent"
#17 0x006b72f1 in driBindContext (pcp=0x807be50, pdp=0x80896d0, prp=0x80896d0) at ../common/dri_util.c:195
        psp = 0x10ca
#18 0x0016bd7c in dri2BindContext (context=0x806a668, draw=0x8089630, read=0x8089630) at dri2_glx.c:119
No locals.
#19 0x00147482 in MakeContextCurrent (dpy=0x806b340, draw=92274689, read=92274689, gc=0x80897c8) at glxcurrent.c:402
        pdraw = 0x8089630
        pread = <value optimized out>
        oldGC = 0x80897c8
        reply = {type = 39 '\'', unused = 47 '/', sequenceNumber = 32, length = 134659384, contextTag = 2114329, pad2 = 6853337, pad3 = 0, pad4 = 3221221436, pad5 = 4298, pad6 = 6918132}
        opcode = <value optimized out>
        oldOpcode = <value optimized out>
        bindReturnValue = <value optimized out>
        state = <value optimized out>
#20 0x00147553 in glXMakeCurrent (dpy=0x806b340, draw=92274689, gc=0x80897c8) at glxcurrent.c:545
No locals.
#21 0x0804b550 in ?? ()
No symbol table info available.
#22 0x0804fe8d in ?? ()
No symbol table info available.
#23 0x0804ec2c in ?? ()
No symbol table info available.
#24 0x00409bd6 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#25 0x0804a931 in ?? ()
No symbol table info available.
(gdb) info registers
eax            0x0	0
ecx            0x10ca	4298
edx            0x6	6
ebx            0x10ca	4298
esp            0xbfffe98c	0xbfffe98c
ebp            0xbfffe998	0xbfffe998
esi            0x524abe	5393086
edi            0x548ff4	5541876
eip            0x12d422	0x12d422 <__kernel_vsyscall+2>
eflags         0x200206	[ PF IF ID ]
cs             0x73	115
ss             0x7b	123
ds             0x7b	123
es             0x7b	123
fs             0x0	0
gs             0x33	51
(gdb) x/16i $pc
=> 0x12d422 <__kernel_vsyscall+2>:	ret    
   0x12d423:	add    %ch,(%esi)
   0x12d425:	jae    0x12d48f
   0x12d427:	jae    0x12d49d
   0x12d429:	jb     0x12d49f
   0x12d42b:	popa   
   0x12d42c:	bound  %eax,(%eax)
   0x12d42e:	cs
   0x12d42f:	push   $0x687361
   0x12d434:	cs
   0x12d435:	fs
   0x12d436:	jns    0x12d4a6
   0x12d438:	jae    0x12d4b3
   0x12d43a:	insl   (%dx),%es:(%edi)
   0x12d43b:	add    %ch,(%esi)
   0x12d43d:	fs
(gdb) x/16i $pc
=> 0x12d422 <__kernel_vsyscall+2>:	ret    
   0x12d423:	add    %ch,(%esi)
   0x12d425:	jae    0x12d48f
   0x12d427:	jae    0x12d49d
   0x12d429:	jb     0x12d49f
   0x12d42b:	popa   
   0x12d42c:	bound  %eax,(%eax)
   0x12d42e:	cs
   0x12d42f:	push   $0x687361
   0x12d434:	cs
   0x12d435:	fs
   0x12d436:	jns    0x12d4a6
   0x12d438:	jae    0x12d4b3
   0x12d43a:	insl   (%dx),%es:(%edi)
   0x12d43b:	add    %ch,(%esi)
   0x12d43d:	fs
(gdb) x/16i $pc
=> 0x12d422 <__kernel_vsyscall+2>:	ret    
   0x12d423:	add    %ch,(%esi)
   0x12d425:	jae    0x12d48f
   0x12d427:	jae    0x12d49d
   0x12d429:	jb     0x12d49f
   0x12d42b:	popa   
   0x12d42c:	bound  %eax,(%eax)
   0x12d42e:	cs
   0x12d42f:	push   $0x687361
   0x12d434:	cs
   0x12d435:	fs
   0x12d436:	jns    0x12d4a6
   0x12d438:	jae    0x12d4b3
   0x12d43a:	insl   (%dx),%es:(%edi)
   0x12d43b:	add    %ch,(%esi)
   0x12d43d:	fs
(gdb) x/16i $pc
=> 0x12d422 <__kernel_vsyscall+2>:	ret    
   0x12d423:	add    %ch,(%esi)
   0x12d425:	jae    0x12d48f
   0x12d427:	jae    0x12d49d
   0x12d429:	jb     0x12d49f
   0x12d42b:	popa   
   0x12d42c:	bound  %eax,(%eax)
   0x12d42e:	cs
   0x12d42f:	push   $0x687361
   0x12d434:	cs
   0x12d435:	fs
   0x12d436:	jns    0x12d4a6
   0x12d438:	jae    0x12d4b3
   0x12d43a:	insl   (%dx),%es:(%edi)
   0x12d43b:	add    %ch,(%esi)
   0x12d43d:	fs
(gdb) thread apply all backtrace

Thread 1 (Thread 0xb7fd5720 (LWP 4298)):
#0  0x0012d422 in __kernel_vsyscall ()
#1  0x0041d651 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0x00420a82 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0x00416718 in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
#4  0x0092ee71 in cs_gem_write_reloc (cs=0x83c2460, bo=0x8089750, read_domain=6, write_domain=4, flags=0) at ../../radeon/radeon_cs_gem.c:129
#5  0x0092f910 in radeon_cs_write_reloc (cs=0x83c2460, bo=0x8089750, read_domain=0, write_domain=4, flags=0) at ../../radeon/radeon_cs.c:20
#6  0x006c954c in r300_emit_cb_setup (r300=0x808d9a8, bo=0x8089750, offset=0, format=3, cpp=4, pitch=2432) at r300_cmdbuf.c:405
#7  0x006c97ae in emit_cb_offset_atom (ctx=0x8096768, atom=0x808e8ac) at r300_cmdbuf.c:429
#8  0x006dcccd in radeon_emit_atom (radeon=0x808d9a8) at radeon_common.c:1033
#9  radeonEmitAtoms (radeon=0x808d9a8) at radeon_common.c:1057
#10 radeonEmitState (radeon=0x808d9a8) at radeon_common.c:1100
#11 0x006d3d1d in r300_swtcl_flush (ctx=0x8096768, current_offset=0) at r300_swtcl.c:666
#12 0x006de1f7 in rcommon_flush_last_swtcl_prim (ctx=0x8096768) at radeon_dma.c:413
#13 0x006cdf99 in r300InvalidateState (ctx=0x8096768, new_state=285213697) at r300_state.c:2320
#14 0x00768e77 in _mesa_update_state_locked (ctx=0x8096768) at main/state.c:665
#15 0x007698aa in _mesa_update_state (ctx=0x8096768) at main/state.c:676
#16 0x006d9b56 in radeonMakeCurrent (driContextPriv=0x807be50, driDrawPriv=0x80896d0, driReadPriv=0x80896d0) at radeon_common_context.c:758
#17 0x006b72f1 in driBindContext (pcp=0x807be50, pdp=0x80896d0, prp=0x80896d0) at ../common/dri_util.c:195
#18 0x0016bd7c in dri2BindContext (context=0x806a668, draw=0x8089630, read=0x8089630) at dri2_glx.c:119
#19 0x00147482 in MakeContextCurrent (dpy=0x806b340, draw=92274689, read=92274689, gc=0x80897c8) at glxcurrent.c:402
#20 0x00147553 in glXMakeCurrent (dpy=0x806b340, draw=92274689, gc=0x80897c8) at glxcurrent.c:545
#21 0x0804b550 in ?? ()
#22 0x0804fe8d in ?? ()
#23 0x0804ec2c in ?? ()
#24 0x00409bd6 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#25 0x0804a931 in ?? ()
(gdb) quit
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