<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Alien Isolation segfault after initial loading screen/video" href="https://bugs.freedesktop.org/show_bug.cgi?id=95026#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Alien Isolation segfault after initial loading screen/video" href="https://bugs.freedesktop.org/show_bug.cgi?id=95026">bug 95026</a> from <a class="email" href="mailto:haagch@frickel.club" title="Christoph Haag <haagch@frickel.club>"> Christoph Haag</a> <pre>Looks like it's the only one: Thread 32 "WinMain" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffc84b1700 (LWP 11301)] 0x00007fffe979cb77 in glsl_to_tgsi_visitor::visit (this=0x7fff3ea10aa0, ir=0x7fff3e263c40) at state_tracker/st_glsl_to_tgsi.cpp:1537 warning: Source file is more recent than executable. 1537 { (gdb) i threads Id Target Id Frame 1 Thread 0x7ffff7fdaec0 (LWP 11258) "AlienIsolation" 0x00007ffff6ef977d in nanosleep () from /usr/lib/libpthread.so.0 2 Thread 0x7fffee897700 (LWP 11262) "SDLTimer" 0x00007ffff6ef85f5 in do_futex_wait () from /usr/lib/libpthread.so.0 3 Thread 0x7fffe5a64700 (LWP 11263) "AlienIsolation" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 4 Thread 0x7fffdf705700 (LWP 11264) "PulseHotplug" 0x00007ffff536ad01 in ppoll () from /usr/lib/libc.so.6 5 Thread 0x7fffdd8c9700 (LWP 11265) "CFileWriterThre" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 6 Thread 0x7fffdd35b700 (LWP 11266) "OpenGL dispatch" 0x00007ffff6ef8427 in do_futex_wait.constprop () from /usr/lib/libpthread.so.0 7 Thread 0x7fffdcb5a700 (LWP 11267) "AlienIsolation" 0x00007ffff534361d in nanosleep () from /usr/lib/libc.so.6 8 Thread 0x7fffd7fff700 (LWP 11268) "OpenGL dispatch" 0x00007ffff6ef8427 in do_futex_wait.constprop () from /usr/lib/libpthread.so.0 9 Thread 0x7fffd77fe700 (LWP 11273) "WinMain" 0x00007ffff6ef8427 in do_futex_wait.constprop () from /usr/lib/libpthread.so.0 10 Thread 0x7fffc92f6700 (LWP 11279) "OpenGL dispatch" 0x00007ffff6ef8427 in do_futex_wait.constprop () from /usr/lib/libpthread.so.0 11 Thread 0x7fffc8af5700 (LWP 11280) "WinMain" 0x00007ffff6ef63e8 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 12 Thread 0x7fffd415a700 (LWP 11281) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 13 Thread 0x7fffd4109700 (LWP 11282) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 14 Thread 0x7fffd40b8700 (LWP 11283) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 15 Thread 0x7fff957fc700 (LWP 11284) "SDLAudioDev2" 0x00007ffff536ad01 in ppoll () from /usr/lib/libc.so.6 16 Thread 0x7fffd4067700 (LWP 11285) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 17 Thread 0x7fffc86b4700 (LWP 11286) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 18 Thread 0x7fffc8663700 (LWP 11287) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 31 Thread 0x7fffc8612700 (LWP 11300) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 * 32 Thread 0x7fffc84b1700 (LWP 11301) "WinMain" 0x00007fffe979cb77 in glsl_to_tgsi_visitor::visit (this=0x7fff3ea10aa0, ir=0x7fff3e263c40) at state_tracker/st_glsl_to_tgsi.cpp:1537 33 Thread 0x7fffc8469700 (LWP 11302) "WinMain" 0x00007ffff6ef8427 in do_futex_wait.constprop () from /usr/lib/libpthread.so.0 34 Thread 0x7fffc8408700 (LWP 11303) "WinMain" 0x00007ffff6ef8427 in do_futex_wait.constprop () from /usr/lib/libpthread.so.0 36 Thread 0x7fffc835b700 (LWP 11305) "WinMain" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 38 Thread 0x7fffc830a700 (LWP 11307) "WinMain" 0x00007ffff534361d in nanosleep () from /usr/lib/libc.so.6 39 Thread 0x7fff7bffe700 (LWP 11308) "vpx decode" 0x00007ffff6ef603f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0 I'm not exactly an expert at debugging C, but it's kinda weird that it's segfaulting on the opening brace of void glsl_to_tgsi_visitor::visit(ir_expression *ir) { unsigned int operand; Googling a bit sounds like it's a stack overflow: <a href="http://stackoverflow.com/a/10501490">http://stackoverflow.com/a/10501490</a> With "disas" gdb actually allows me to see the assembler instructions before the crash. Yay. 0x00007fffe979cb70 <+32>: sub $0x1000,%rsp => 0x00007fffe979cb77 <+39>: orq $0x0,(%rsp) but not sure why: (gdb) print ir->operands $1 = {0x7fff3eb22770, 0x0, 0x0, 0x0} (gdb) info locals operand = <optimized out> op = {{file = PROGRAM_TEMPORARY, index = 0, index2D = 0, swizzle = 0, negate = 0, type = 0, reladdr = 0x0, reladdr2 = 0x0, has_index2 = false, double_reg2 = false, array_id = 0, is_double_vertex_input = false}, {file = PROGRAM_TEMPORARY, index = 0, index2D = 0, swizzle = 0, negate = 0, type = 0, reladdr = 0x0, reladdr2 = 0x0, has_index2 = false, double_reg2 = false, array_id = 0, is_double_vertex_input = false}, {file = PROGRAM_TEMPORARY, index = 0, index2D = 0, swizzle = 0, negate = 0, type = 0, reladdr = 0x0, reladdr2 = 0x0, has_index2 = false, double_reg2 = false, array_id = 0, is_double_vertex_input = false}, {file = PROGRAM_TEMPORARY, index = 0, index2D = 0, swizzle = 0, negate = 0, type = 0, reladdr = 0x0, reladdr2 = 0x0, has_index2 = false, double_reg2 = false, array_id = 0, is_double_vertex_input = false}} result_src = <optimized out> result_dst = <optimized out> __PRETTY_FUNCTION__ = "virtual void glsl_to_tgsi_visitor::visit(ir_expression*)" vector_elements = <optimized out></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>