Ext3 users - Jan 2003 - kjournald oops

Hello List,
Running 2.4.21-pre3-ac1 SMP with new quotas (usr and grp), this oops
showed up while copying a large amount (about 50gigs, only 1.6 made it
before the oops).  I'm trying to reproduce as we speak.  

Unable to handle kernel NULL pointer dereference at virtual address
00000004
c0130956
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0010:[<c0130956>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000   ebx: c18054f0   ecx: e8762000   edx: e876205c
esi: 00000000   edi: 00000000   ebp: 00000000   esp: e8763bdc
ds: 0018   es: 0018   ss: 0018
Process kjournald (pid: 10086, stackpage=e8763000)
Stack: 00000001 00000001 00000046 c01e907c 00000000 f7a970b8 f7bfa018
c2842cc4
       eac6f000 c1000020 eac6f000 c012db6a c281deec 00000000 cccccccd
c2848c00
       c012ef19 c2842cc4 eac6f000 00000019 c2842ccc c2842cd4 c02b5224
e8762000
Call Trace:    [<c01e907c>] [<c012db6a>] [<c012ef19>]
[<c01300a9>]
[<c013015c>]
  [<c0130c52>] [<c0130f0b>] [<c0136610>] [<c013676c>]
[<c01be751>]
[<c0222e23>]
  [<c011bb0b>] [<c011b9b1>] [<c011b73b>] [<c0108b6d>]
[<c01bed9a>]
[<c013a636>]
  [<c01bedfd>] [<c01bef97>] [<c016e4fd>] [<c016d65b>]
[<c02227c9>]
[<c021eb2f>]
  [<c01c5cd7>] [<c0170236>] [<c01700e0>] [<c0105676>]
[<c0170100>]

Code: 89 58 04 89 03 89 53 04 89 59 5c 89 7b 0c ff 41 68 83 c4 1c
>>EIP; c0130956 <__free_pages_ok+286/2a0>   <====Trace; c01e907c
<aac_io_done+1c/30>
Trace; c012db6a <kmem_slab_destroy+aa/d0>
Trace; c012ef19 <kmem_cache_reap+2b9/330>
Trace; c01300a9 <shrink_caches+19/90>
Trace; c013015c <try_to_free_pages_zone+3c/60>
Trace; c0130c52 <balance_classzone+62/200>
Trace; c0130f0b <__alloc_pages+11b/170>
Trace; c0136610 <alloc_bounce_page+10/a0>
Trace; c013676c <create_bounce+2c/148>
Trace; c01be751 <__make_request+a1/5e0>
Trace; c0222e23 <net_rx_action+b3/170>
Trace; c011bb0b <bh_action+4b/80>
Trace; c011b9b1 <tasklet_hi_action+61/a0>
Trace; c011b73b <do_softirq+6b/d0>
Trace; c0108b6d <do_IRQ+dd/f0>
Trace; c01bed9a <generic_make_request+10a/120>
Trace; c013a636 <__refile_buffer+56/60>
Trace; c01bedfd <submit_bh+4d/70>
Trace; c01bef97 <ll_rw_block+177/1c0>
Trace; c016e4fd <journal_brelse_array+1d/30>
Trace; c016d65b <journal_commit_transaction+3ab/10f2>
Trace; c02227c9 <netif_rx+a9/1d0>
Trace; c021eb2f <alloc_skb+ef/1c0>
Trace; c01c5cd7 <receive_packet+2c7/3e0>
Trace; c0170236 <kjournald+136/200>
Trace; c01700e0 <commit_timeout+0/10>
Trace; c0105676 <kernel_thread+26/30>
Trace; c0170100 <kjournald+0/200>
Code;  c0130956 <__free_pages_ok+286/2a0>
00000000 <_EIP>:
Code;  c0130956 <__free_pages_ok+286/2a0>   <====   0:   89 58 04      
mov    %ebx,0x4(%eax)   <====Code;  c0130959 <__free_pages_ok+289/2a0>
   3:   89 03                     mov    %eax,(%ebx)
Code;  c013095b <__free_pages_ok+28b/2a0>
   5:   89 53 04                  mov    %edx,0x4(%ebx)
Code;  c013095e <__free_pages_ok+28e/2a0>
   8:   89 59 5c                  mov    %ebx,0x5c(%ecx)
Code;  c0130961 <__free_pages_ok+291/2a0>
   b:   89 7b 0c                  mov    %edi,0xc(%ebx)
Code;  c0130964 <__free_pages_ok+294/2a0>
   e:   ff 41 68                  incl   0x68(%ecx)
Code;  c0130967 <__free_pages_ok+297/2a0>
  11:   83 c4 1c                  add    $0x1c,%esp


Any pointers would be appriciated.
TIA,
Dale

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Dale <lnxus@yahoo.com> wrote:
>
> Running 2.4.21-pre3-ac1 SMP
That kernel is seriously busted.  You need this fix:




From: Hugh Dickins <hugh@veritas.com>
X-X-Sender: hugh@localhost.localdomain
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: [PATCH] 2.4.21-pre3-ac oops
Message-ID:
<Pine.LNX.4.44.0301191347310.2280-100000@localhost.localdomain>

If you got 2.4.21-pre3-ac __free_pages_ok oops, please try this patch.

Hugh

--- 2.4.21-pre3-ac4/kernel/fork.c	Mon Jan 13 18:56:12 2003
+++ linux/kernel/fork.c	Sun Jan 19 13:39:37 2003
@@ -688,6 +688,8 @@
 	p->lock_depth = -1;		/* -1 = no lock */
 	p->start_time = jiffies;
 
+	INIT_LIST_HEAD(&p->local_pages);
+
 	retval = -ENOMEM;
 	/* copy all the process information */
 	if (copy_files(clone_flags, p))

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