> On Apr 5, 2019, at 5:19 AM, Michael Butler <i...@protected-networks.net>
> wrote:
>
> 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
Michael,
Could you please file a PR for this?
Thank you!
-Enji
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