From owner-freebsd-current@freebsd.org Fri Apr 5 12:19:17 2019 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 301471575760 for ; Fri, 5 Apr 2019 12:19:17 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from mail.protected-networks.net (mail.protected-networks.net [IPv6:2001:470:8d59:1::8]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mail.protected-networks.net", Issuer "Protected Networks CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id A60F58EE91; Fri, 5 Apr 2019 12:19:16 +0000 (UTC) (envelope-from imb@protected-networks.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= protected-networks.net; h=content-transfer-encoding :content-language:content-type:content-type:mime-version :user-agent:date:date:message-id:subject:subject:from:from; s= 201508; t=1554466753; bh=kFpjojdF0G4UmXu/QO33K/fiinoo5Bt5twmXjNL c34w=; b=qdrpGdw6f1rrc35B4l57uiJI25Calp1CIKx7DpymOQgNlQJrhmGrCD3 rjzHFDsdpLeOM2XI0A/Pa+L4j2lHGAQqmi+peIfE8ZfaAjVWO4HpSo0/xM+e1Un9 86agRfBDFIqJ1RjDxr4na71l+AOZ8gWinh+ZBPIpqH+gq1cuXKlY= Received: from toshi.auburn.protected-networks.net (toshi.auburn.protected-networks.net [192.168.1.10]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: imb@mail.protected-networks.net) by mail.protected-networks.net (Postfix) with ESMTPSA id 3AEB41E34; Fri, 5 Apr 2019 08:19:13 -0400 (EDT) To: freebsd-current From: Michael Butler Openpgp: preference=signencrypt Cc: phil@freebsd.org Subject: SVN r345859: libxo broke netstat? Message-ID: Date: Fri, 5 Apr 2019 08:19:12 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Apr 2019 12:19:17 -0000 Something changed in libxo that causes 'netstat -i' to segfault as below: imb@toshi:/usr/src/usr.bin/netstat> lldb /usr/obj/usr/src/amd64.amd64/usr.bin/netstat/netstat (lldb) target create "/usr/obj/usr/src/amd64.amd64/usr.bin/netstat/netstat" Current executable set to '/usr/obj/usr/src/amd64.amd64/usr.bin/netstat/netstat' (x86_64). (lldb) run -i Process 65948 launching Process 65948 launched: '/usr/obj/usr/src/amd64.amd64/usr.bin/netstat/netstat' (x86_64) Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll Process 65948 stopped * thread #1, name = 'netstat', stop reason = signal SIGSEGV: invalid address (fault address: 0x0) frame #0: 0x00000008002987ad libxo.so.0`___lldb_unnamed_symbol30$$libxo.so.0 + 669 libxo.so.0`___lldb_unnamed_symbol30$$libxo.so.0: -> 0x8002987ad <+669>: movsbl (%r12), %eax 0x8002987b2 <+674>: movslq %eax, %rbx 0x8002987b5 <+677>: movq 0xac04(%rip), %r13 0x8002987bc <+684>: testl %eax, %eax (lldb) bt * thread #1, name = 'netstat', stop reason = signal SIGSEGV: invalid address (fault address: 0x0) * frame #0: 0x00000008002987ad libxo.so.0`___lldb_unnamed_symbol30$$libxo.so.0 + 669 frame #1: 0x0000000800294e09 libxo.so.0`___lldb_unnamed_symbol24$$libxo.so.0 + 1401 frame #2: 0x0000000800293b91 libxo.so.0`___lldb_unnamed_symbol22$$libxo.so.0 + 609 frame #3: 0x0000000800293df0 libxo.so.0`xo_emit + 256 frame #4: 0x0000000000212dc5 netstat`intpr + 1669 frame #5: 0x0000000000217ecf netstat`main + 2431 frame #6: 0x000000000021210f netstat`__fini_array_end + 271