** Changed in: gdb (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/1573786
Title: gdb Process record does not support instruction 0xc5 Status in gdb package in Ubuntu: Confirmed Bug description: the 'process record' feature of gdb allows reverse debugging. neato. but on Ubuntu-16.04 it fails to work, complaining about an unhandled instruction. % gdb simple GNU gdb (Ubuntu 7.11-0ubuntu1) 7.11 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from simple...done. (gdb) b main Breakpoint 1 at 0x400db7: file /home/robl/work/mpich/src/mpi/romio/test/simple.c, line 26. (gdb) run Starting program: /home/robl/work/build/mpich-logfs/src/mpi/romio/test/simple [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Breakpoint 1, main (argc=1, argv=0x7fffffffd698) at /home/robl/work/mpich/src/mpi/romio/test/simple.c:26 26 { (gdb) record (gdb) continue Continuing. Process record does not support instruction 0xc5 at address 0x7ffff7dee6e7. Process record: failed to record execution log. Program stopped. _dl_runtime_resolve_avx () at ../sysdeps/x86_64/dl-trampoline.h:81 81 ../sysdeps/x86_64/dl-trampoline.h: No such file or directory. If we examine the address we see this: (gdb) x/i 0x7ffff7dee6e7 => 0x7ffff7dee6e7 <_dl_runtime_resolve_avx+71>: vmovdqa %ymm0,(%rsp) ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: gdb 7.11-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: Unity Date: Fri Apr 22 15:34:03 2016 InstallationDate: Installed on 2015-09-10 (225 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) SourcePackage: gdb UpgradeStatus: Upgraded to xenial on 2016-04-22 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/1573786/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
