[Qemu-devel] [Bug 1290370] Re: FreeBSD 9.2 shell crashes when run with -smp 4 option

[prajeeth]

** Description changed:

  This is a bug that i have noticed in qemu 1.7.50 as well as 1.1.50. It
  was the latter that forced me to clone the repository to check if this
  is the case with the resent version as well . The latest commit on which
  the bug is found is f53f3d0a00b6df39ce8dfca942608e5b6a9a4f71 on qemu.git
  
  configured with target list i386-softmmu
  and then
  make
  
  OS: FreeBSD 9.2 Text Install ISO 
(ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/i386/ISO-IMAGES/9.2/FreeBSD-9.2-RELEASE-i386-disc1.iso)
  Installed it to a qcow2 format image.
  
  ./i386-softmmu/qemu-system-i386 -hda <bsd-image> -m 2G -smp 4 -net nic
  -net user -monitor stdio
  
  (boot into multi-user mode)->(login to root account)
  
  I have the filebench benchmark installed on the image and when i run it the 
default root shell (csh) crashes with the error.
  [pid xxxx (csh) sigreturn eflag = 0xXXXX]
  Here is the piece of kernel code that is getting executed (i think) 
http://svnweb.freebsd.org/base/release/9.2.0/sys/i386/i386/machdep.c?view=markup#l1095
  
  Here is a related bug
  https://www.virtualbox.org/ticket/458
  
  The crash happens randomly. It is not just related with filebench.
  Here are a few scenarios:
  * When i run fileserver workload of filebench
  * After i issue the shutdown -h now shutdown -r now commands
  * Issuing mount -t linprocfs proc /proc
  
  Moreover it is not guaranteed that the above scenarios will reproduce it 
(reliably).
  Basically after running some commands and getting the CPU and the kernel 
worked up i think.
  
- NOTE: This bug does not occur in qemu-kvm
+ NOTE: This bug does not occur in qemu-kvm [X]
+ EDIT: Confirmed. This happens on qemu-kvm as well.

** Description changed:

  This is a bug that i have noticed in qemu 1.7.50 as well as 1.1.50. It
  was the latter that forced me to clone the repository to check if this
  is the case with the resent version as well . The latest commit on which
  the bug is found is f53f3d0a00b6df39ce8dfca942608e5b6a9a4f71 on qemu.git
  
- configured with target list i386-softmmu
- and then
- make
+ qemu 1.7.50 configured with target list i386-softmmu.
+ 
  
  OS: FreeBSD 9.2 Text Install ISO 
(ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/i386/ISO-IMAGES/9.2/FreeBSD-9.2-RELEASE-i386-disc1.iso)
  Installed it to a qcow2 format image.
  
- ./i386-softmmu/qemu-system-i386 -hda <bsd-image> -m 2G -smp 4 -net nic
- -net user -monitor stdio
+ Command to run QEMU::
+ ./i386-softmmu/qemu-system-i386 -hda <bsd-image> -m 2G -smp 4 -net nic -net 
user -monitor stdio
  
  (boot into multi-user mode)->(login to root account)
  
  I have the filebench benchmark installed on the image and when i run it the 
default root shell (csh) crashes with the error.
  [pid xxxx (csh) sigreturn eflag = 0xXXXX]
  Here is the piece of kernel code that is getting executed (i think) 
http://svnweb.freebsd.org/base/release/9.2.0/sys/i386/i386/machdep.c?view=markup#l1095
  
  Here is a related bug
  https://www.virtualbox.org/ticket/458
  
  The crash happens randomly. It is not just related with filebench.
  Here are a few scenarios:
  * When i run fileserver workload of filebench
  * After i issue the shutdown -h now shutdown -r now commands
  * Issuing mount -t linprocfs proc /proc
  
  Moreover it is not guaranteed that the above scenarios will reproduce it 
(reliably).
- Basically after running some commands and getting the CPU and the kernel 
worked up i think.
+ The bug manifests after running some commands and getting the CPU and the 
kernel worked up.
  
  NOTE: This bug does not occur in qemu-kvm [X]
  EDIT: Confirmed. This happens on qemu-kvm as well.

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https://bugs.launchpad.net/bugs/1290370

Title:
  FreeBSD 9.2 shell crashes when run with -smp 4 option

Status in QEMU:
  New

Bug description:
  This is a bug that i have noticed in qemu 1.7.50 as well as 1.1.50. It
  was the latter that forced me to clone the repository to check if this
  is the case with the resent version as well . The latest commit on
  which the bug is found is f53f3d0a00b6df39ce8dfca942608e5b6a9a4f71 on
  qemu.git

  qemu 1.7.50 configured with target list i386-softmmu.

  
  OS: FreeBSD 9.2 Text Install ISO 
(ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/i386/ISO-IMAGES/9.2/FreeBSD-9.2-RELEASE-i386-disc1.iso)
  Installed it to a qcow2 format image.

  Command to run QEMU::
  ./i386-softmmu/qemu-system-i386 -hda <bsd-image> -m 2G -smp 4 -net nic -net 
user -monitor stdio

  (boot into multi-user mode)->(login to root account)

  I have the filebench benchmark installed on the image and when i run it the 
default root shell (csh) crashes with the error.
  [pid xxxx (csh) sigreturn eflag = 0xXXXX]
  Here is the piece of kernel code that is getting executed (i think) 
http://svnweb.freebsd.org/base/release/9.2.0/sys/i386/i386/machdep.c?view=markup#l1095

  Here is a related bug
  https://www.virtualbox.org/ticket/458

  The crash happens randomly. It is not just related with filebench.
  Here are a few scenarios:
  * When i run fileserver workload of filebench
  * After i issue the shutdown -h now shutdown -r now commands
  * Issuing mount -t linprocfs proc /proc

  Moreover it is not guaranteed that the above scenarios will reproduce it 
(reliably).
  The bug manifests after running some commands and getting the CPU and the 
kernel worked up.

  NOTE: This bug does not occur in qemu-kvm [X]
  EDIT: Confirmed. This happens on qemu-kvm as well.

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