Date: Fri, 5 Apr 2019 08:19:12 -0400 From: Michael Butler <imb@protected-networks.net> To: freebsd-current <freebsd-current@freebsd.org> Cc: phil@freebsd.org Subject: SVN r345859: libxo broke netstat? Message-ID: <d2f35fae-b84a-d27f-c95d-b376cb68cef3@protected-networks.net>
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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
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