[Qemu-devel] [Bug 1603580] [NEW] [gdbstub] qemu is killed when using remote debugger with qemu -S -s

[Alon Bar-Lev]

Public bug reported:

Hello,

REPRODUCE

$ qemu-system-x86_64 -s -S -nographic
<wait>
QEMU: Terminated via GDBStub

$ gdb
(gdb) target remote :1234
(gdb) load /bin/ls
(gdb) target exec
A program is being debugged already. Kill it? (y or no) y
No executable file now.

EXPECTED

Enable program to be executed without terminating QEMU.

DISCUSSION

This was already discussed in [1], reverted in [2], however, no solution
is provided.

It worked perfectly in the past, I guess because of [1] and before [3].

Opening bug for this as discussion in mailing list did not attract
anyone and functionality is required. If there is other gdb sequence to
achieve same result it would be great to get it documented.

Thanks,

[1] 
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=00e94dbc7fd0110b0555d59592b004333adfb4b8
[2] 
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ce0274f730eacbd24c706523ddbbabb6b95d0659
[3] 
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=7d03f82f81e0e6c106ca0d2445a0fc49dc9ddc7b

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1603580

Title:
  [gdbstub] qemu is killed when using remote debugger with qemu -S -s

Status in QEMU:
  New

Bug description:
  Hello,

  REPRODUCE

  $ qemu-system-x86_64 -s -S -nographic
  <wait>
  QEMU: Terminated via GDBStub

  $ gdb
  (gdb) target remote :1234
  (gdb) load /bin/ls
  (gdb) target exec
  A program is being debugged already. Kill it? (y or no) y
  No executable file now.

  EXPECTED

  Enable program to be executed without terminating QEMU.

  DISCUSSION

  This was already discussed in [1], reverted in [2], however, no
  solution is provided.

  It worked perfectly in the past, I guess because of [1] and before
  [3].

  Opening bug for this as discussion in mailing list did not attract
  anyone and functionality is required. If there is other gdb sequence
  to achieve same result it would be great to get it documented.

  Thanks,

  [1] 
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=00e94dbc7fd0110b0555d59592b004333adfb4b8
  [2] 
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ce0274f730eacbd24c706523ddbbabb6b95d0659
  [3] 
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=7d03f82f81e0e6c106ca0d2445a0fc49dc9ddc7b

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