From owner-freebsd-bugs@freebsd.org Mon Nov 9 20:40:52 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id AAEAC46CFCD for ; Mon, 9 Nov 2020 20:40:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 4CVNDh40vQz3rbk for ; Mon, 9 Nov 2020 20:40:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 8963D46CCDA; Mon, 9 Nov 2020 20:40:52 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8923C46D020 for ; Mon, 9 Nov 2020 20:40:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CVNDh3Gpzz3rYm for ; Mon, 9 Nov 2020 20:40:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 62F611768B for ; Mon, 9 Nov 2020 20:40:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 0A9Keqtq090578 for ; Mon, 9 Nov 2020 20:40:52 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 0A9KeqiI090577 for bugs@FreeBSD.org; Mon, 9 Nov 2020 20:40:52 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 250992] Binaries produced by clang -pg on x86-64 always crash in ld-elf.so.1 Date: Mon, 09 Nov 2020 20:40:52 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 12.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: oleg.derevenetz@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Nov 2020 20:40:52 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250992 Bug ID: 250992 Summary: Binaries produced by clang -pg on x86-64 always crash in ld-elf.so.1 Product: Base System Version: 12.2-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: oleg.derevenetz@gmail.com Consider the following program (test.c): $ cat test.c #include int main() { printf("OK\n"); } When built using the following command: $ clang -pg test.c the following binary is produced: $ file a.out a.out: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), statically linked, interpreter /libexec/ld-elf.so.1, for FreeBSD 12.2, FreeBSD-style, = with debug_info, not stripped (note the "interpreter /libexec/ld-elf.so.1" part). Once launched, it crashes inside ld-elf.so.1 with SIGSEGV: $ lldb a.out (lldb) target create "a.out" Current executable set to '/usr/home/oleg/tmp/pg/a.out' (x86_64). (lldb) run Process 872 launching Process 872 launched: '/usr/home/oleg/tmp/pg/a.out' (x86_64) Process 872 stopped * thread #1, name =3D 'a.out', stop reason =3D signal SIGSEGV: invalid addr= ess (fault address: 0x0) frame #0: 0x00000008002a3ab0 -> 0x8002a3ab0: movq (%r15), %rdx 0x8002a3ab3: cmpq $0x6fffffef, %rdx ; imm =3D 0x6FFFFFEF 0x8002a3aba: jg 0x8002a3b10 0x8002a3abc: cmpq $0x21, %rdx (lldb) disassemble -> 0x8002a3ab0: movq (%r15), %rdx 0x8002a3ab3: cmpq $0x6fffffef, %rdx ; imm =3D 0x6FFFFFEF 0x8002a3aba: jg 0x8002a3b10 0x8002a3abc: cmpq $0x21, %rdx 0x8002a3ac0: ja 0x8002a3ba6 0x8002a3ac6: movslq (%r12,%rdx,4), %rax 0x8002a3aca: addq %r12, %rax 0x8002a3acd: jmpq *%rax (lldb) Disassembled code above is apparently from ld-elf.so.1/_rtld_is_dlopened. However, if the following command is used for the build: $ clang -pg -static test.c the following binary is produced: $ file a.out a.out: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), statically linked, for FreeBSD 12.2, FreeBSD-style, with debug_info, not stripped (note the absence of "interpreter ..." part). This binary runs just fine: $ lldb a.out (lldb) target create "a.out" Current executable set to '/usr/home/oleg/tmp/pg/a.out' (x86_64). (lldb) run Process 914 launching Process 914 launched: '/usr/home/oleg/tmp/pg/a.out' (x86_64) OK Process 914 exited with status =3D 0 (0x00000000) (lldb) --=20 You are receiving this mail because: You are the assignee for the bug.=