Here's a traceback with a little more information.
*** Error in `compiz': free(): invalid next size (fast): 0x0000000002c834b0 *** ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x80996)[0x7fe48073c996] /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0(+0xe407)[0x7fe46129a407] /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0(+0xe6f8)[0x7fe46129a6f8] /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0(+0x2130a)[0x7fe4612ad30a] /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0(pango_layout_get_iter+0x80)[0x7fe4612af720] /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0(pango_renderer_draw_layout+0xdc)[0x7fe4612b487c] /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0(+0x825a)[0x7fe4614e025a] /usr/lib/compiz/libunityshell.so(unity::dash::ResultRendererTile::LoadText(unity::dash::Result const&)+0x26d)[0x7fe4627121ed] /usr/lib/compiz/libunityshell.so(unity::dash::ResultViewGrid::DoLazyLoad()+0x2da)[0x7fe462719c0a] /usr/lib/libunity-core-6.0.so.8(unity::glib::Source::SourceCallback(void*)+0x1a)[0x7fe460a1288a] /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x146)[0x7fe47f00b3a6] /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x486f8)[0x7fe47f00b6f8] /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_loop_run+0x6a)[0x7fe47f00bafa] /usr/lib/libcompiz_core.so.ABI-20130415(compiz::private_screen::EventManager::startEventLoop(_XDisplay*)+0xab)[0x7fe480fded7b] compiz(main+0x91)[0x401971] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7fe4806ddde5] compiz[0x4019bc]
Here's a traceback with a little more information.
*** Error in `compiz': free(): invalid next size (fast): 0x0000000002c834b0 *** 64-linux- gnu/libc. so.6(+0x80996) [0x7fe48073c996 ] x86_64- linux-gnu/ libpango- 1.0.so. 0(+0xe407) [0x7fe46129a407 ] x86_64- linux-gnu/ libpango- 1.0.so. 0(+0xe6f8) [0x7fe46129a6f8 ] x86_64- linux-gnu/ libpango- 1.0.so. 0(+0x2130a) [0x7fe4612ad30a ] x86_64- linux-gnu/ libpango- 1.0.so. 0(pango_ layout_ get_iter+ 0x80)[0x7fe4612 af720] x86_64- linux-gnu/ libpango- 1.0.so. 0(pango_ renderer_ draw_layout+ 0xdc)[0x7fe4612 b487c] x86_64- linux-gnu/ libpangocairo- 1.0.so. 0(+0x825a) [0x7fe4614e025a ] compiz/ libunityshell. so(unity: :dash:: ResultRendererT ile::LoadText( unity:: dash::Result const&) +0x26d) [0x7fe4627121ed ] compiz/ libunityshell. so(unity: :dash:: ResultViewGrid: :DoLazyLoad( )+0x2da) [0x7fe462719c0a ] libunity- core-6. 0.so.8( unity:: glib::Source: :SourceCallback (void*) +0x1a)[ 0x7fe460a1288a] 64-linux- gnu/libglib- 2.0.so. 0(g_main_ context_ dispatch+ 0x146)[ 0x7fe47f00b3a6] 64-linux- gnu/libglib- 2.0.so. 0(+0x486f8) [0x7fe47f00b6f8 ] 64-linux- gnu/libglib- 2.0.so. 0(g_main_ loop_run+ 0x6a)[0x7fe47f0 0bafa] libcompiz_ core.so. ABI-20130415( compiz: :private_ screen: :EventManager: :startEventLoop (_XDisplay* )+0xab) [0x7fe480fded7b ] main+0x91) [0x401971] 64-linux- gnu/libc. so.6(__ libc_start_ main+0xf5) [0x7fe4806ddde5 ]
======= Backtrace: =========
/lib/x86_
/usr/lib/
/usr/lib/
/usr/lib/
/usr/lib/
/usr/lib/
/usr/lib/
/usr/lib/
/usr/lib/
/usr/lib/
/lib/x86_
/lib/x86_
/lib/x86_
/usr/lib/
compiz(
/lib/x86_
compiz[0x4019bc]