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[Qemu-devel] [Bug 570574] Re: GDBStub Bug: Can't stop at start_kernel wh


From: Peter Maydell
Subject: [Qemu-devel] [Bug 570574] Re: GDBStub Bug: Can't stop at start_kernel when debugging linux kernel
Date: Tue, 10 Jul 2012 15:25:13 -0000

This works for me with QEMU 1.1 and GDB 7.4: gdb successfully stops at
the start_kernel breakpoint. So I'm going to close it as 'fix released'
on the assumption that we fixed the bug at some point between QEMU 0.12
and 1.1...


** Changed in: qemu
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/570574

Title:
  GDBStub Bug: Can't stop at start_kernel when debugging linux kernel

Status in QEMU:
  Fix Released

Bug description:
  version: qemu-0.12.3
  my environment: arm-linux-gdb + qemu-system-arm + arm926 linux kernel
  my operation: 
  qemu-system-arm -kernel zImage -initrd cramfs.arm.rootfs -s -S
  arm-linux-gdb vmlinux
  >target remote TCP::1234
  >b start_kernel
  >c

  then qemu start and free run, not stop.
  when I pause gdb, qemu stop at rest_init() called by start_kernel()

  But if I use qemu-0.11.1 instead of 0.12.3, stopping at start_kernel
  is all right, and debug action seems allright too,

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