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SubjectRe: kernel BUG at page_alloc.c:92! & page allocation failure. order:0, mode:0x0
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The problem occurs after the ptrace.c change, as I indicated earlier.
Following is the ksymoops output:

ksymoops 2.4.1 on i686 2.4.17-3.1smp64gigmem. Options used
-v /boot/vmlinux-2.5.26 (specified)
-K (specified)
-l /proc/modules (default)
-o /lib/modules/2.5.26/ (specified)
-m /boot/System.map-2.5.26 (specified)

No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Unable to handle kernel NULL pointer dereference at virtual address
00000014
*pde = 373f2001
Oops: 0000
CPU: 0
EIP: 0010:[<c0133a83>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: 00000000 ebx: 00000000 ecx: c357c058 edx: c03d5e20
esi: 00000000 edi: f73e900a ebp: f73e900a esp: f73fdee0
ds: 0018 es: 0018 ss: 0018
Stack: 0000000a c011e12b c357c058 f73fc000 f73e9000 f75f1ee0 c357c058
f75dcf60
00000000 f75f1ee0 f73e9000 f73e9000 c015ccd3 c88c2ce0 bfffffa4
f73e9000
0000000a 00000000 000001d0 f7552950 00000400 c88c2ce0 f73e9000
c015d046
Call Trace: [<c011e12b>] [<c015ccd3>] [<c015d046>] [<c013ca18>]
[<c010cd79>]
[<c013cbca>] [<c010700b>]
Code: 8b 43 14 a9 00 08 00 00 75 24 f0 ff 4b 10 0f 94 c0 84 c0 74

>>EIP; c0133a83 <page_cache_release+3/40> <=====
Trace; c011e12b <access_process_vm+13b/1c0>
Trace; c015ccd3 <proc_pid_cmdline+63/f0>
Trace; c015d046 <proc_info_read+46/100>
Trace; c013ca18 <vfs_read+98/110>
Trace; c010cd79 <sys_mmap2+69/a0>
Trace; c013cbca <sys_read+2a/40>
Trace; c010700b <syscall_call+7/b>
Code; c0133a83 <page_cache_release+3/40>
00000000 <_EIP>:
Code; c0133a83 <page_cache_release+3/40> <=====
0: 8b 43 14 mov 0x14(%ebx),%eax <=====
Code; c0133a86 <page_cache_release+6/40>
3: a9 00 08 00 00 test $0x800,%eax
Code; c0133a8b <page_cache_release+b/40>
8: 75 24 jne 2e <_EIP+0x2e> c0133ab1
<page_cache_release+31/40>
Code; c0133a8d <page_cache_release+d/40>
a: f0 ff 4b 10 lock decl 0x10(%ebx)
Code; c0133a91 <page_cache_release+11/40>
e: 0f 94 c0 sete %al
Code; c0133a94 <page_cache_release+14/40>
11: 84 c0 test %al,%al
Code; c0133a96 <page_cache_release+16/40>
13: 74 00 je 15 <_EIP+0x15> c0133a98
<page_cache_release+18/40>

<1>Unable to handle kernel NULL pointer dereference at virtual address
00000000
c01b7e5b
*pde = 00104001
Oops: 0002
CPU: 5
EIP: 0010:[<c01b7e5b>] Not tainted
EFLAGS: 00010003
eax: 00000000 ebx: 00000000 ecx: f75d1000 edx: 00000000
esi: 0000f01b edi: 00000001 ebp: c886f4c0 esp: c88c7ec0
ds: 0018 es: 0018 ss: 0018
Stack: 00000001 0000270f c886f4c0 00000000 c01b8e0d c886f4c0 0000001b
00000000
c03e69a0 01010000 00000000 00000001 0000270f 00000001 c01b923b
00000001
00000001 c88c7f15 c0112da0 c03994c0 00000001 00000000 c03994c0
00000000
Call Trace: [<c01b8e0d>] [<c01b923b>] [<c0112da0>] [<c01b92ac>]
[<c01092de>]
[<c01094e4>] [<c01052f0>] [<c0107957>] [<c01052f0>] [<c01052f0>]
[<c010531a>]
[<c01053c2>] [<c0117088>]
Code: c6 00 00 8b 91 58 01 00 00 ff 81 5c 01 00 00 8b 44 24 18 88

>>EIP; c01b7e5b <put_queue+2b/60> <=====
Trace; c01b8e0d <handle_scancode+24d/2a0>
Trace; c01b923b <handle_kbd_event+14b/1a0>
Trace; c0112da0 <scheduler_tick+a0/370>
Trace; c01b92ac <keyboard_interrupt+1c/30>
Trace; c01092de <handle_IRQ_event+5e/90>
Trace; c01094e4 <do_IRQ+a4/f0>
Trace; c01052f0 <default_idle+0/40>
Trace; c0107957 <common_interrupt+1f/24>
Trace; c01052f0 <default_idle+0/40>
Trace; c01052f0 <default_idle+0/40>
Trace; c010531a <default_idle+2a/40>
Trace; c01053c2 <cpu_idle+52/70>
Trace; c0117088 <printk+128/140>
Code; c01b7e5b <put_queue+2b/60>
00000000 <_EIP>:
Code; c01b7e5b <put_queue+2b/60> <=====
0: c6 00 00 movb $0x0,(%eax) <=====
Code; c01b7e5e <put_queue+2e/60>
3: 8b 91 58 01 00 00 mov 0x158(%ecx),%edx
Code; c01b7e64 <put_queue+34/60>
9: ff 81 5c 01 00 00 incl 0x15c(%ecx)
Code; c01b7e6a <put_queue+3a/60>
f: 8b 44 24 18 mov 0x18(%esp,1),%eax
Code; c01b7e6e <put_queue+3e/60>
13: 88 00 mov %al,(%eax)

<0>Kernel panic: Aiee, killing interrupt handler!


David F Barrera
Linux Technology Center, IBM
T/L 678-1375 External 838-1375
dbarrera@us.ibm.com



Andrew Morton
<akpm@zip.com.au> To: David F Barrera/Austin/IBM@IBMUS
Sent by: cc: Andrea Arcangeli <andrea@suse.de>, linux-kernel@vger.kernel.org
akpm@us.ibm.com Subject: Re: kernel BUG at page_alloc.c:92! & page allocation failure. order:0,
mode:0x0

07/24/2002 02:35
PM





David F Barrera wrote:
>
> Andrew,
>
> I tried the change to ptrace.c, but it did not work. I cannot boot the
> machine. It gives an oops upon boot.

That won't be due to the ptrace change. Suggest you do a clean
build and if the oops is still there, please pass it through ksymoops and
let us know.

And please drop the ptrace.c change and use
http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.27/lru-removal.patch
instead.

Thanks.





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