GNU gdb (GDB) 9.2 For help, type "help". Type "apropos word" to search for commands related to "word". (gdb) file /usr/lib/Xorg Reading symbols from /usr/lib/Xorg... (gdb) run :0 -configure Starting program: /usr/lib/Xorg :0 -configure [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 65 VPCMPEQ (%rdi), %ymm0, %ymm1 (gdb) bt #0 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 #1 0x00007ffff71c3706 in get_cie_encoding (cie=0x55553c311d03) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde.c:300 #2 0x00007ffff71c4663 in get_fde_encoding (f=0x55555577da88) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde.h:157 #3 _Unwind_IteratePhdrCallback (info=info@entry=0x7fffffffd310, size=size@entry=64, ptr=ptr@entry=0x7fffffffd3a0) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde-dip.c:418 #4 0x00007ffff7bd4f95 in __GI___dl_iterate_phdr (callback=callback@entry=0x7ffff71c41c0 <_Unwind_IteratePhdrCallback>, data=data@entry=0x7fffffffd3a0) at dl-iteratephdr.c:75 #5 0x00007ffff71c52c6 in _Unwind_Find_FDE (pc=0x5555556a1be2 , bases=bases@entry=0x7fffffffd518) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde-dip.c:469 #6 0x00007ffff71c1319 in uw_frame_state_for (context=0x7fffffffd470, fs=0x7fffffffd560) at /build/gcc/src/gcc/libgcc/unwind-dw2.c:1263 #7 0x00007ffff71c333b in _Unwind_Backtrace (trace=0x7ffff7ba7f90 , trace_argument=0x7fffffffd720) at /build/gcc/src/gcc/libgcc/unwind.inc:302 #8 0x00007ffff7ba8116 in __GI___backtrace (array=array@entry=0x7fffffffc4e8, size=size@entry=1) at backtrace.c:116 #9 0x00005555556a1be3 in OsInit () at ../xorg-server-1.20.9/os/osinit.c:217 #10 0x0000000000000001 in ?? () #11 0x00000000000081ed in ?? () #12 0x0000000300000000 in ?? () #13 0x0000000800000004 in ?? () #14 0x0000000600000007 in ?? () #15 0x000000180000001f in ?? () #16 0x0000000000000019 in ?? () #17 0x000000005f84957f in ?? () #18 0x00005555556a59f0 in ?? () at ../xorg-server-1.20.9/dri3/dri3_request.c:118 #19 0x0000000000000000 in ?? () (gdb) c Continuing. Program received signal SIGSEGV, Segmentation fault. __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 65 VPCMPEQ (%rdi), %ymm0, %ymm1 (gdb) bt #0 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 #1 0x00007ffff71c3706 in get_cie_encoding (cie=0x5555a2e267c9) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde.c:300 #2 0x00007ffff71c4663 in get_fde_encoding (f=0x55555577c67c) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde.h:157 #3 _Unwind_IteratePhdrCallback (info=info@entry=0x7fffffffc4b0, size=size@entry=64, ptr=ptr@entry=0x7fffffffc540) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde-dip.c:418 #4 0x00007ffff7bd4f95 in __GI___dl_iterate_phdr (callback=callback@entry=0x7ffff71c41c0 <_Unwind_IteratePhdrCallback>, data=data@entry=0x7fffffffc540) at dl-iteratephdr.c:75 #5 0x00007ffff71c52c6 in _Unwind_Find_FDE (pc=0x55555569abd2 , bases=bases@entry=0x7fffffffc6b8) at /build/gcc/src/gcc/libgcc/unwind-dw2-fde-dip.c:469 #6 0x00007ffff71c1319 in uw_frame_state_for (context=0x7fffffffc610, fs=0x7fffffffc700) at /build/gcc/src/gcc/libgcc/unwind-dw2.c:1263 #7 0x00007ffff71c333b in _Unwind_Backtrace (trace=0x7ffff7ba7f90 , trace_argument=0x7fffffffc8c0) at /build/gcc/src/gcc/libgcc/unwind.inc:302 #8 0x00007ffff7ba8116 in __GI___backtrace (array=array@entry=0x7fffffffc8f0, size=size@entry=64) at backtrace.c:116 #9 0x000055555569abd3 in xorg_backtrace () at ../xorg-server-1.20.9/os/backtrace.c:126 #10 0x0000000000000000 in ?? () (gdb) c Continuing. Program terminated with signal SIGSEGV, Segmentation fault. The program no longer exists. (gdb) quit