Date: Tue, 12 Sep 2017 06:07:56 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222248] lldb is missing ObjectFile plugin to write cores Message-ID: <bug-222248-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222248 Bug ID: 222248 Summary: lldb is missing ObjectFile plugin to write cores Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: gergely.czuczy@harmless.hu Hello, Apparently it seems that the ObjectFile plugins got left out during importi= ng llvm, and because of this, it's not possible to save the core of the process currently being debugged: On aarch64, r322723: root@build-pine64:/usr/ports/editors/emacs-devel/work/emacs-f44184f# cd lisp l' -batch --no-site-file --no-site-lisp --eval '(setq load-prefer-newer t)'= -f batch-byte-compile emacs-lisp/macroexp.el (lldb) target create "../src/bootstrap-emacs" Current executable set to '../src/bootstrap-emacs' (aarch64). (lldb) settings set -- target.run-args "-batch" "--no-site-file" "--no-site-lisp" "--eval" "(setq load-prefer-newer t)" "-f" "batch-byte-compile" "emacs-lisp/macroexp.el" (lldb) r Process 1016 launching Process 1016 launched: '../src/bootstrap-emacs' (aarch64) Process 1016 stopped * thread #1, name =3D 'bootstrap-emacs', stop reason =3D signal SIGSEGV: in= valid address (fault address: 0x41b17978) frame #0: 0x0000000000228460 bootstrap-emacs`xnrealloc(pa=3D0x0000000000000000, nitems=3D0, item_size=3D1102150015) at alloc.c:939 936 { 937 eassert (0 <=3D nitems && 0 < item_size); 938 ptrdiff_t nbytes; -> 939 if (INT_MULTIPLY_WRAPV (nitems, item_size, &nbytes) || SIZE_MAX < nbytes) 940 memory_full (SIZE_MAX); 941 return xrealloc (pa, nbytes); 942 } (lldb) process save-core /root/foo.core error: Failed to save core file for process: no ObjectFile plugins were abl= e to save a core for this process (lldb) On amd64 11-STABLE r311927: $ lldb (lldb) process attach --pid 54625 Process 54625 stopped Executable module set to "/usr/bin/systat". Architecture set to: x86_64--freebsd11.0. (lldb) process save-core foobar.core error: Failed to save core file for process: no ObjectFile plugins were abl= e to save a core for this process Sharing cores of currently being debugged processes can be very helpful, wh= en repoting issues with various software. For an example, currently I'm trying= to figure out while emacs-devel segfaults during build on aarch64, and the autogenerated core is different, due to the process' internal sigsegv handl= er. --=20 You are receiving this mail because: You are the assignee for the bug.=
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