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[Xen-devel] dom0-smp failed to execute MMU updates



Included is the debug log from 20050328 xen-devel build.  SMP dom0 booted fine, 
but being
used as a distcc server, gcc oopsed the dom0 kernel.

Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
(512) 838-9253   T/L: 678-9253
ryanh@xxxxxxxxxx

---
(XEN) DOM0: (file=mm.c, line=1179) Bad type (saw e0000000 != exp 40000000) for 
pfn 00027747
(XEN) 
(XEN) DOM0: (file=mm.c, line=322) Bad page type for pfn 00027747 (f0000001)
(XEN) DOM0: (file=mm.c, line=1286) Error while pinning pfn 00027747
Failed to execute MMU updates.
------------[ cut here ]------------
kernel BUG at <bad filename>:54763!
invalid operand: 0000 [#1]
PREEMPT SMP DEBUG_PAGEALLOC
Modules linked in: sworks_agp agpgart
CPU:    0
EIP:    0061:[<c0116303>]    Not tainted VLI
EFLAGS: 00010292   (2.6.11-xen0-smp) 
EIP is at _flush_page_update_queue+0x93/0xa0
eax: 00000022   ebx: c1407548   ecx: fbffc000   edx: 00000001
esi: 00ef4f60   edi: 00000000   ebp: 00000000   esp: d8193e38
ds: 007b   es: 007b   ss: 0069
Process gcc (pid: 2509, threadinfo=d8192000 task=d9456af0)
Stack: c03df4a0 d8192000 d88b8000 c05d2e40 c0145400 d88b8000 c05d2e40 00000001 
       c0117ace d8192000 d88b8000 c05d2e40 c0145829 c05d2e40 000000d0 d88b8000 
       c0114eb9 da2f7d8c d8193f64 da2f7ff0 d9a0e000 c0114eb9 c05d2e40 000000d0 
Call Trace:
 [<c0145400>] cache_alloc_debugcheck_after+0xa0/0x1b0
 [<c0117ace>] __change_page_attr+0x2e/0x230
 [<c0145829>] kmem_cache_alloc+0xa9/0xf0
 [<c0114eb9>] pgd_alloc+0x19/0x20
 [<c0114eb9>] pgd_alloc+0x19/0x20
 [<c011c2e0>] mm_init+0xf0/0x120
 [<c011c346>] mm_alloc+0x36/0x50
 [<c0167f6c>] do_execve+0x7c/0x220
 [<c01085b6>] sys_execve+0x46/0xa0
 [<c0109b3f>] syscall_call+0x7/0xb
Code: 85 c0 78 1b 89 fa 8b 5c 24 04 b8 18 bb 43 c0 8b 74 24 08 8b 7c 24 0c 83 
c4 10 e9 89 c5 2a 00 c7 04 24 a0 f4 3d c0 e8 ed 86 00 00 <0f> 0b eb d5 89 f6 8d 
bc 27 00 00 00 00 55 bd e0 29 51 c0 57 56 
 <6>note: gcc[2509] exited with preempt_count 1

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