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SubjectOops in prune_dcache (2.4.0-prerelease)

Hi Linus et. all

While under massive disk and cpu load, 2.4.0-prerelease produced
the following oops (decode see below)

Keith, I've read the FAQ about having been bitten by Makefile bugs
with certain symbols and such, yet I still get these symbol warnings
even after a mrproper rebuild. Any clues?


ksymoops 2.3.5 on i686 2.4.0-prerelease. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.0-prerelease/ (default)
-m /boot/ (specified)

Warning (compare_maps): ksyms_base symbol acpi_clear_event_R__ver_acpi_clear_event not found in Ignoring ksyms_base entry
Warning (compare_maps): ksyms_base symbol acpi_cm_memcpy_R__ver_acpi_cm_memcpy not found in Ignoring ksyms_base entry

[ ** many other warnings snipped to reduce spam ** ]

Unable to handle kernel paging request at virtual address 01000014
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c01419cc>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 01000000 ebx: c20847e0 ecx: c2081d10 edx: c2081d10
esi: c20847c0 edi: c2081d00 ebp: 00002c79 esp: c147bfa4
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 3, stackpage=c147b000)
Stack: 00010f00 00000003 00000004 00000000 c0141cc1 00006ea6 c012a0d3 00000006
00000004 00010f00 c023e1f1 c147a239 0008e000 c012a19a 00000004 00000000
cffe5fbc c0105000 ffffff9c c01074d3 00000000 c02d6d64 c02a5fdc
Call Trace: [<c0141cc1>] [<c012a0d3>] [<c023e1f1>] [<c012a19a>] [<c0105000>] [<c01074d3>]
Code: 8b 40 14 85 c0 74 09 57 56 ff d0 83 c4 08 eb 0c 57 e8 be 1b

>>EIP; c01419cc <prune_dcache+9c/120> <=====
Trace; c0141cc1 <shrink_dcache_memory+21/30>
Trace; c012a0d3 <do_try_to_free_pages+53/90>
Trace; c023e1f1 <tvecs+2169/1b124>
Trace; c012a19a <kswapd+8a/140>
Trace; c0105000 <empty_bad_page+0/1000>
Trace; c01074d3 <kernel_thread+23/30>
Code; c01419cc <prune_dcache+9c/120>
00000000 <_EIP>:
Code; c01419cc <prune_dcache+9c/120> <=====
0: 8b 40 14 movl 0x14(%eax),%eax <=====
Code; c01419cf <prune_dcache+9f/120>
3: 85 c0 testl %eax,%eax
Code; c01419d1 <prune_dcache+a1/120>
5: 74 09 je 10 <_EIP+0x10> c01419dc <prune_dcache+ac/120>
Code; c01419d3 <prune_dcache+a3/120>
7: 57 pushl %edi
Code; c01419d4 <prune_dcache+a4/120>
8: 56 pushl %esi
Code; c01419d5 <prune_dcache+a5/120>
9: ff d0 call *%eax
Code; c01419d7 <prune_dcache+a7/120>
b: 83 c4 08 addl $0x8,%esp
Code; c01419da <prune_dcache+aa/120>
e: eb 0c jmp 1c <_EIP+0x1c> c01419e8 <prune_dcache+b8/120>
Code; c01419dc <prune_dcache+ac/120>
10: 57 pushl %edi
Code; c01419dd <prune_dcache+ad/120>
11: e8 be 1b 00 00 call 1bd4 <_EIP+0x1bd4> c01435a0 <iput+0/150>

45 warnings issued. Results may not be reliable.
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