[Xen-bugs] [Bug 170] New: Oops: 0000 [#2] - Unable to handle kernel NULL pointer dereference at virtual address 00000038

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=170

           Summary: Oops: 0000 [#2] - Unable to handle kernel NULL pointer
                    dereference at virtual address 00000038
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: dbarrera@xxxxxxxxxx
                CC: hohnbaum@xxxxxxxxxx


This oops on an x86 machine, SLES 9 SP2 based Dom0. I have seen other NULL
pointer dereference failures today, but they are all different, hence I am
writing different bug reports. 

changeset:   6192:3d187585c1415fbb14cb285cc71e0ff0faf81e67
tag:         tip
user:        kaf24@xxxxxxxxxxxxxxxxxxxx
date:        Tue Aug 16 06:20:47 2005
summary:     Use a SWIOTLB to use pre-reserved bounce buffers for high memory

No workloads or even DomUs running at the time of oops.

Unable to handle kernel NULL pointer dereference at virtual address 00000038
 printing eip:
c0190514
*pde = ma 00000000 pa 55555000
Oops: 0000 [#2]
PREEMPT
Modules linked in: thermal processor fan button battery ac sworks_agp agpgart
CPU:    0
EIP:    0061:[<c0190514>]    Not tainted VLI
EFLAGS: 00010297   (2.6.12-xen0)
EIP is at sync_sb_inodes+0x94/0x310
eax: 00000000   ebx: cc2da5c8   ecx: cc2da5d0   edx: c07b7f2c
esi: 000003f7   edi: cf838a00   ebp: c07b6000   esp: c07b7ed0
ds: 007b   es: 007b   ss: 0069
Process pdflush (pid: 162, threadinfo=c07b6000 task=c0744a80)
Stack: cc2da778 c07b7f2c 00000000 00000000 cf838a84 c07b6000 cf838a7c 00000009
       ffffb059 cf838a00 c07b6000 c07b7f2c c07b7f9c c0190856 cf838a00 c07b7f2c
       c07b7f2c ffffb24d 00003f9b c014adf6 c07b7f2c cf830a00 ffffa4a1 00000000
Call Trace:
 [<c0190856>] writeback_inodes+0xc6/0x100
 [<c014adf6>] wb_kupdate+0x96/0x110
 [<c014bb90>] __pdflush+0x120/0x2b0
 [<c014bd20>] pdflush+0x0/0x30
 [<c014bd46>] pdflush+0x26/0x30
 [<c014ad60>] wb_kupdate+0x0/0x110
 [<c014bd20>] pdflush+0x0/0x30
 [<c01389bd>] kthread+0xad/0xf0
 [<c0138910>] kthread+0x0/0xf0
 [<c0108615>] kernel_thread_helper+0x5/0x10
Code: 7c 89 5b 04 3b 44 24 10 74 52 8d 47 7c ba 00 e0 ff ff 89 44 24 18 21 e2 89
54 24 14 8b 8f 88 00 00 00 8d 59 f8 8b 83 9c 00 00 00 <8b> 70 38 f6 46 08 02 74
58 8b 41 04 8b 11 89 10 89 42 04 8b 47
 <6>note: pdflush[162] exited with preempt_count 1

-- 
Configure bugmail: 
http://bugzilla.xensource.com/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.

_______________________________________________
Xen-bugs mailing list
Xen-bugs@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-bugs