Aurelien Jarno wrote: > Hi, > > I have just updated my system from kvm 28 to kvm 29, and a GNU/kFreeBSD > amd64 system fails to boot with the following error: > > Fatal trap 12 with interrupts disabled > > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x7aa93e0 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xffffffff80598b36 > stack pointer = 0x10:0xffffffff87c556b0 > frame pointer = 0x10:0xffffff0007aa9260 > code segment = base 0x00, lmit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = resume, IOPL = 0 > current process = 1 (init) > trap number = 12 > panic: page fault > > > This is on an machine with an Athlon64 X2 CPU. > > As it was running fine with kvm 28, I tried to mix kvm 28 and kvm 29. It > fails when using modules from kvm 29, whatever the version of the > userland part. This looks like a problem in the kernel modules. > > Please also note that GNU/kFreeBSD i386 is working fine with kvm 29 on > the same machine. > > Please tell me what I can do to help debugging this problem. > Alternatively I have uploaded an image to reproduce the problem here: > http://temp.aurel32.net/kfreebsd-amd64.img.gz > >
Can you bisect kvm to find the offending commit? Basically, you do a git clone git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm.git cd kvm git bisect start drivers/kvm/ bit bisect bad kvm-29 git bisect good kvm-28 git will check out a test candidate; go to your kvm userspace directory and do make -C kernel sync LINUX=/path/to/the/kvm/git/directory make -C kernel sudo make -C kernel install reload the module, test, and issue 'git bisect good' or 'git bisect bad' according to the result. As there are only 25 commits you should be done in 5 cycles. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
