[Xen-bugs] [Bug 617] New: Balloon hangs system in shadow translated mode

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=617

           Summary: Balloon hangs system in shadow translated mode
           Product: Xen
           Version: unstable
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Guest-OS
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jk@xxxxxxxxx


Found in latest unstable and in 3.0.2(not a bugzilla option yet), this is a new
bug, has worked in past versions. 
To reproduce just try to boot up a domain with translated shadow with:
features = "auto_translated_physmap" in config.
Here oops:

Event-channel device installed.
blkif_init: reqs=64, pages=704, mmap_vstart=0xc2800000
------------[ cut here ]------------
kernel BUG at <bad filename>:17547!
invalid opcode: 0000 [#1]
SMP
Modules linked in:
CPU:    0
EIP:    0061:[<c0243ab0>]    Not tainted VLI
EFLAGS: 00010002   (2.6.16-xen #1)
EIP is at increase_reservation+0x1e0/0x260
eax: c1000000   ebx: 000034ff   ecx: 00000001   edx: c0391400
esi: c002dedc   edi: c1069fe0   ebp: 00000000   esp: c002decc
ds: 007b   es: 007b   ss: e021
Process events/0 (pid: 5, threadinfo=c002c000 task=c0021580)
Stack: <0>c1062000 00000000 00000000 c11d3000 c11d3000 00000400 00000000 000000
       00007ff0 c038ce00 c001ba90 c04702c0 00000400 00000000 c002c000 00000000
       c0243d7a 00000400 00000456 c03a0720 c03a0724 c04702a0 c01329f9 00000000
Call Trace:
 [<c0243d7a>] balloon_process+0x3a/0xc0
 [<c01329f9>] run_workqueue+0x79/0xf0
 [<c012eee0>] do_sigaction+0x220/0x2d0
 [<c0243d40>] balloon_process+0x0/0xc0
 [<c0132bc8>] worker_thread+0x158/0x180
 [<c0119ab0>] default_wake_function+0x0/0x20
 [<c0119ab0>] default_wake_function+0x0/0x20
 [<c0132a70>] worker_thread+0x0/0x180
 [<c0136ced>] kthread+0xbd/0x100
 [<c0136c30>] kthread+0x0/0x100
 [<c0102fc9>] kernel_thread_helper+0x5/0xc
Code: f0 57 3e c0 8b 54 24 08 b8 04 07 3a c0 e8 c9 f8 0e 00 8b 44 24 0c 31 d2 e


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