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

[prajeeth]

Public bug reported:

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

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: freebsd

** 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 
+ and then
  make
-  
+ 
  OS: FreeBSD 9.2 Text Install 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 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. 
+ 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). 
+ 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

** 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
+ 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

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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

  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

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