[Qemu-devel] [Bug 1671173] [NEW] OS started to crash with a message: "Trying to execute code outside RAM or ROM"

[Konstantin Tcholokachvili]

Public bug reported:

There is a project (https://github.com/narke/colorForth ) wich always
worked with qemu up to version 2.5.1.1 but doesn't works from version
2.6 onwards. It continues to work with bochs.

Downlaod: git clone https://github.com/narke/colorForth.git
Build: make
Test: qemu-system-i386 -drive format=raw,file=cf2012.img,index=0,if=floppy


System information: Ubuntu LTS 16.04 x86-64
Affected qemu versions: 2.6 to present (2.8)


I got the message:


WARNING: Image format was not specified for 'cf2012.img' and probing guessed 
raw.
         Automatically detecting the format is dangerous for raw images, write 
operations on block 0 will be restricted.
         Specify the 'raw' format explicitly to remove the restrictions.
qemu-system-i386: Trying to execute code outside RAM or ROM at 0x8998c426
This usually means one of the following happened:

(1) You told QEMU to execute a kernel for the wrong machine type, and it 
crashed on startup (eg trying to run a raspberry pi kernel on a versatilepb 
QEMU machine)
(2) You didn't give QEMU a kernel or BIOS filename at all, and QEMU executed a 
ROM full of no-op instructions until it fell off the end
(3) Your guest kernel has a bug and crashed by jumping off into nowhere

This is almost always one of the first two, so check your command line and that 
you are using the right type of kernel for this machine.
If you think option (3) is likely then you can try debugging your guest with 
the -d debug options; in particular -d guest_errors will cause the log to 
include a dump of the guest register state at this point.

Execution cannot continue; stopping here.


Thank you in advance.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1671173

Title:
  OS started to crash with a message: "Trying to execute code outside
  RAM or ROM"

Status in QEMU:
  New

Bug description:
  There is a project (https://github.com/narke/colorForth ) wich always
  worked with qemu up to version 2.5.1.1 but doesn't works from version
  2.6 onwards. It continues to work with bochs.

  Downlaod: git clone https://github.com/narke/colorForth.git
  Build: make
  Test: qemu-system-i386 -drive format=raw,file=cf2012.img,index=0,if=floppy

  
  System information: Ubuntu LTS 16.04 x86-64
  Affected qemu versions: 2.6 to present (2.8)

  
  I got the message:

  
  WARNING: Image format was not specified for 'cf2012.img' and probing guessed 
raw.
           Automatically detecting the format is dangerous for raw images, 
write operations on block 0 will be restricted.
           Specify the 'raw' format explicitly to remove the restrictions.
  qemu-system-i386: Trying to execute code outside RAM or ROM at 0x8998c426
  This usually means one of the following happened:

  (1) You told QEMU to execute a kernel for the wrong machine type, and it 
crashed on startup (eg trying to run a raspberry pi kernel on a versatilepb 
QEMU machine)
  (2) You didn't give QEMU a kernel or BIOS filename at all, and QEMU executed 
a ROM full of no-op instructions until it fell off the end
  (3) Your guest kernel has a bug and crashed by jumping off into nowhere

  This is almost always one of the first two, so check your command line and 
that you are using the right type of kernel for this machine.
  If you think option (3) is likely then you can try debugging your guest with 
the -d debug options; in particular -d guest_errors will cause the log to 
include a dump of the guest register state at this point.

  Execution cannot continue; stopping here.

  
  Thank you in advance.

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