[Qemu-devel] [Bug 1192344] Re: qemu crashes on unaligned extended disk reads

[T. Huth]

Marking this ticket as "Invalid" according to comment #2.

** Changed in: qemu
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1192344

Title:
  qemu crashes on unaligned extended disk reads

Status in QEMU:
  Invalid

Bug description:
  When performing a BIOS extended disk read (INT 13H, AH=0x42), if the
  offset of the buffer destination in the DAP (disk address packet) is
  not dword-aligned (i.e. a multiple of 4), SeaBIOS attempts to execute
  code at non-mapped address 0xb4f53, causing QEMU to crash. I imagine
  it's a bug in the BIOS code, but it does cause QEMU to crash.

  QEMU version: 1.4.0 (Debian 1.4.0+dfsg-1expubuntu4) (from Ubuntu repository)
  SeaBIOS version: 1.7.2-20130119_170942-roseapple
  command line: qemu-system-x86_64 -m 64 -hda hda.img -monitor stdio
  CPU: Intel Core i7 CPU M620 on a Dell Latitude E6410
  OS: Ubuntu, GNU/Linux 3.8.0-25-generic, 64-bit

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