Error connecting to remote gdbserver through gdb

1
votes

I have a docker container running with -p 2000:2000, which is running a gdbserver on port 2000.

When trying to connect from my host machine through gdb I get the following:

(gdb) target remote localhost:2000
Remote debugging using localhost:2000
Ignoring packet error, continuing...
warning: unrecognized item "timeout" in "qSupported" response
Ignoring packet error, continuing...
Remote replied unexpectedly to 'vMustReplyEmpty': timeout

The application running in the docker container is written in C++, behind a fcgi (gdbserver :2000 spawn-fcgi -p 8000 -n ./myBinary)

Host

  • OS: osx
  • gdb version: 8.0.1 (installed with --with-all-targets)

Container

  • OS: ubuntu 14.04
  • gdb version: 7.7.1

Any help would be appreciated.

1
c++dockergdbfastcgigdbserver

1 Answers

0
votes

i meet the same question ，when i run my qemu ，and i want connect gdb with qemu inner gdbserver. i do the follow job:

  1. run qemu in system mode.
  2. run gdbserver inside qemu
  3. run gdb in Host computer and connect gdbservr inside gdb.

the software version are below:

QEMU emulator version 2.12.92
gdb 7.11.1
GNU gdbserver (GDB) 7.8

at first i cannot connect gdbserver,the error is

(gdb) target remote 192.168.240.136:1234
Remote debugging using 192.168.240.136:1234
Ignoring packet error, continuing...
warning: unrecognized item "timeout" in "qSupported" response
Ignoring packet error, continuing...
Remote replied unexpectedly to 'vMustReplyEmpty': timeout

i solve the problem by change to high level kernel when start start qemu. from vmlinux-2.6.32-5-4kc-malta to vmlinux-3.2.0-4-4kc-malta,then the command start qemu changed to below:

sudo qemu-system-mips -M malta \
-kernel vmlinux-3.2.0-4-4kc-malta \
-hda debian_squeeze_mips_standard.qcow2 \
-append "root=/dev/sda1 console=tty0" \
-net nic,macaddr=00:16:3e:00:01:01 \
-net tap \
-nographic

then the error was solved ,i can connect gdbserver with gdb.

the possible solve ways also include