2006-10-15 22:53:21

by Larry Finger

[permalink] [raw]
Subject: BUG in 2.6.18.1?

Running 2.6.18.1, I got the following warning in my log:

Oct 15 16:24:38 larrylap kernel: BUG: warning at kernel/lockdep.c:565/print_infinite_recursion_bug()
Oct 15 16:24:38 larrylap kernel: [<c0103b3f>] show_trace_log_lvl+0x1af/0x1d0
Oct 15 16:24:38 larrylap kernel: [<c0104f4b>] show_trace+0x1b/0x20
Oct 15 16:24:38 larrylap kernel: [<c0104f76>] dump_stack+0x26/0x30
Oct 15 16:24:38 larrylap kernel: [<c0131099>] print_infinite_recursion_bug+0x49/0x50
Oct 15 16:24:38 larrylap kernel: [<c01311d5>] find_usage_backwards+0x65/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131e27>] check_usage+0x27/0x280
Oct 15 16:24:38 larrylap kernel: [<c01337a0>] __lock_acquire+0xac0/0xdc0
Oct 15 16:24:38 larrylap kernel: [<c0133e18>] lock_acquire+0x68/0x90
Oct 15 16:24:38 larrylap kernel: [<c0310788>] _spin_lock_irqsave+0x48/0x60
Oct 15 16:24:38 larrylap kernel: [<c0112713>] change_page_attr+0x13/0x260
Oct 15 16:24:38 larrylap kernel: [<c0112996>] kernel_map_pages+0x36/0xa0
Oct 15 16:24:38 larrylap kernel: [<c0146c68>] free_hot_cold_page+0x98/0x130
Oct 15 16:24:38 larrylap kernel: [<c0146d5a>] free_hot_page+0xa/0x10
Oct 15 16:24:38 larrylap kernel: [<c0146d8a>] __free_pages+0x2a/0x40
Oct 15 16:24:38 larrylap kernel: [<c0146dce>] free_pages+0x2e/0x40
Oct 15 16:24:38 larrylap kernel: [<c015ac39>] kmem_freepages+0x79/0xa0
Oct 15 16:24:38 larrylap kernel: [<c015c242>] slab_destroy+0x112/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c5b2>] cache_flusharray+0x72/0x150
Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
Oct 15 16:24:38 larrylap kernel: [<c015c277>] slab_destroy+0x147/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c5b2>] cache_flusharray+0x72/0x150
Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
Oct 15 16:24:38 larrylap kernel: [<c01d59df>] ext3_destroy_inode+0x1f/0x30
Oct 15 16:24:38 larrylap kernel: [<c017a02b>] destroy_inode+0x2b/0x60
Oct 15 16:24:38 larrylap kernel: [<c017aae1>] dispose_list+0x81/0x100
Oct 15 16:24:38 larrylap kernel: [<c017ad50>] shrink_icache_memory+0x1f0/0x230
Oct 15 16:24:38 larrylap kernel: [<c0149c72>] shrink_slab+0x122/0x190
Oct 15 16:24:38 larrylap kernel: [<c014ad87>] kswapd+0x297/0x420
Oct 15 16:24:38 larrylap kernel: [<c012c269>] kthread+0xe9/0xf0
Oct 15 16:24:38 larrylap kernel: [<c0101005>] kernel_thread_helper+0x5/0x10
Oct 15 16:24:38 larrylap kernel: DWARF2 unwinder stuck at kernel_thread_helper+0x5/0x10
Oct 15 16:24:38 larrylap kernel: Leftover inexact backtrace:
Oct 15 16:24:38 larrylap kernel: [<c0104f4b>] show_trace+0x1b/0x20
Oct 15 16:24:38 larrylap kernel: [<c0104f76>] dump_stack+0x26/0x30
Oct 15 16:24:38 larrylap kernel: [<c0131099>] print_infinite_recursion_bug+0x49/0x50
Oct 15 16:24:38 larrylap kernel: [<c01311d5>] find_usage_backwards+0x65/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_usage_backwards+0xa0/0xd0
Oct 15 16:24:38 larrylap kernel: [<c0131e27>] check_usage+0x27/0x280
Oct 15 16:24:38 larrylap kernel: [<c01337a0>] __lock_acquire+0xac0/0xdc0
Oct 15 16:24:38 larrylap kernel: [<c0133e18>] lock_acquire+0x68/0x90
Oct 15 16:24:38 larrylap kernel: [<c0310788>] _spin_lock_irqsave+0x48/0x60
Oct 15 16:24:38 larrylap kernel: [<c0112713>] change_page_attr+0x13/0x260
Oct 15 16:24:38 larrylap kernel: [<c0112996>] kernel_map_pages+0x36/0xa0
Oct 15 16:24:38 larrylap kernel: [<c0146c68>] free_hot_cold_page+0x98/0x130
Oct 15 16:24:38 larrylap kernel: [<c0146d5a>] free_hot_page+0xa/0x10
Oct 15 16:24:38 larrylap kernel: [<c0146d8a>] __free_pages+0x2a/0x40
Oct 15 16:24:38 larrylap kernel: [<c0146dce>] free_pages+0x2e/0x40
Oct 15 16:24:38 larrylap kernel: [<c015ac39>] kmem_freepages+0x79/0xa0
Oct 15 16:24:38 larrylap kernel: [<c015c242>] slab_destroy+0x112/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c5b2>] cache_flusharray+0x72/0x150
Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
Oct 15 16:24:38 larrylap kernel: [<c015c277>] slab_destroy+0x147/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
Oct 15 16:24:38 larrylap kernel: [<c015c5b2>] cache_flusharray+0x72/0x150
Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
Oct 15 16:24:38 larrylap kernel: [<c01d59df>] ext3_destroy_inode+0x1f/0x30
Oct 15 16:24:38 larrylap kernel: [<c017a02b>] destroy_inode+0x2b/0x60
Oct 15 16:24:38 larrylap kernel: [<c017aae1>] dispose_list+0x81/0x100
Oct 15 16:24:38 larrylap kernel: [<c017ad50>] shrink_icache_memory+0x1f0/0x230
Oct 15 16:24:38 larrylap kernel: [<c0149c72>] shrink_slab+0x122/0x190
Oct 15 16:24:38 larrylap kernel: [<c014ad87>] kswapd+0x297/0x420
Oct 15 16:24:38 larrylap kernel: [<c012c269>] kthread+0xe9/0xf0
Oct 15 16:24:38 larrylap kernel: [<c0101005>] kernel_thread_helper+0x5/0x10


Larry


2006-10-16 00:03:27

by John Richard Moser

[permalink] [raw]
Subject: Re: BUG in 2.6.18.1?

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Hash: SHA1



Larry Finger wrote:
> Running 2.6.18.1, I got the following warning in my log:
>
> Oct 15 16:24:38 larrylap kernel: BUG: warning at
> kernel/lockdep.c:565/print_infinite_recursion_bug()
> Oct 15 16:24:38 larrylap kernel: [<c0103b3f>]
> show_trace_log_lvl+0x1af/0x1d0
> Oct 15 16:24:38 larrylap kernel: [<c0104f4b>] show_trace+0x1b/0x20
> Oct 15 16:24:38 larrylap kernel: [<c0104f76>] dump_stack+0x26/0x30
> Oct 15 16:24:38 larrylap kernel: [<c0131099>]
> print_infinite_recursion_bug+0x49/0x50
> Oct 15 16:24:38 larrylap kernel: [<c01311d5>]
> find_usage_backwards+0x65/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0

....

Hmmm... 21 is infinite? Interesting.

I find that it would be interesting to me personally if the kernel was
smart enough to spit out something like:

Oct 15 16:24:38 larrylap kernel: [<c0131210>] find_[...]+0xa0/0xd0
[21 times]

(of course, with find_usage_backwards spelled out)

After all, what if it's practical that a specific recursion would run
3000 times and it gets caught at 5000 times? ("f**king bad design")

Just a pet peeve of mine though.
- --
We will enslave their women, eat their children and rape their
cattle!
-- Bosc, Evil alien overlord from the fifth dimension
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2006-10-17 12:19:40

by Srinivasa Ds

[permalink] [raw]
Subject: Re: BUG in 2.6.18.1?

Lock-validator code uses recursive functions to verify lock
dependencies. And one should have some limit for recursive
function,otherwise stack may get overflowed. So at any case 20 is the
max depth for this recursive functions. But this value doesn't scale up
for 16-way or 32-way SMP systems. Hence this bug.

Larry Finger wrote:
> Running 2.6.18.1, I got the following warning in my log:
>
> Oct 15 16:24:38 larrylap kernel: BUG: warning at
> kernel/lockdep.c:565/print_infinite_recursion_bug()
> Oct 15 16:24:38 larrylap kernel: [<c0103b3f>]
> show_trace_log_lvl+0x1af/0x1d0
> Oct 15 16:24:38 larrylap kernel: [<c0104f4b>] show_trace+0x1b/0x20
> Oct 15 16:24:38 larrylap kernel: [<c0104f76>] dump_stack+0x26/0x30
> Oct 15 16:24:38 larrylap kernel: [<c0131099>]
> print_infinite_recursion_bug+0x49/0x50
> Oct 15 16:24:38 larrylap kernel: [<c01311d5>]
> find_usage_backwards+0x65/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131e27>] check_usage+0x27/0x280
> Oct 15 16:24:38 larrylap kernel: [<c01337a0>] __lock_acquire+0xac0/0xdc0
> Oct 15 16:24:38 larrylap kernel: [<c0133e18>] lock_acquire+0x68/0x90
> Oct 15 16:24:38 larrylap kernel: [<c0310788>]
> _spin_lock_irqsave+0x48/0x60
> Oct 15 16:24:38 larrylap kernel: [<c0112713>]
> change_page_attr+0x13/0x260
> Oct 15 16:24:38 larrylap kernel: [<c0112996>] kernel_map_pages+0x36/0xa0
> Oct 15 16:24:38 larrylap kernel: [<c0146c68>]
> free_hot_cold_page+0x98/0x130
> Oct 15 16:24:38 larrylap kernel: [<c0146d5a>] free_hot_page+0xa/0x10
> Oct 15 16:24:38 larrylap kernel: [<c0146d8a>] __free_pages+0x2a/0x40
> Oct 15 16:24:38 larrylap kernel: [<c0146dce>] free_pages+0x2e/0x40
> Oct 15 16:24:38 larrylap kernel: [<c015ac39>] kmem_freepages+0x79/0xa0
> Oct 15 16:24:38 larrylap kernel: [<c015c242>] slab_destroy+0x112/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c5b2>]
> cache_flusharray+0x72/0x150
> Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
> Oct 15 16:24:38 larrylap kernel: [<c015c277>] slab_destroy+0x147/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c5b2>]
> cache_flusharray+0x72/0x150
> Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
> Oct 15 16:24:38 larrylap kernel: [<c01d59df>]
> ext3_destroy_inode+0x1f/0x30
> Oct 15 16:24:38 larrylap kernel: [<c017a02b>] destroy_inode+0x2b/0x60
> Oct 15 16:24:38 larrylap kernel: [<c017aae1>] dispose_list+0x81/0x100
> Oct 15 16:24:38 larrylap kernel: [<c017ad50>]
> shrink_icache_memory+0x1f0/0x230
> Oct 15 16:24:38 larrylap kernel: [<c0149c72>] shrink_slab+0x122/0x190
> Oct 15 16:24:38 larrylap kernel: [<c014ad87>] kswapd+0x297/0x420
> Oct 15 16:24:38 larrylap kernel: [<c012c269>] kthread+0xe9/0xf0
> Oct 15 16:24:38 larrylap kernel: [<c0101005>]
> kernel_thread_helper+0x5/0x10
> Oct 15 16:24:38 larrylap kernel: DWARF2 unwinder stuck at
> kernel_thread_helper+0x5/0x10
> Oct 15 16:24:38 larrylap kernel: Leftover inexact backtrace:
> Oct 15 16:24:38 larrylap kernel: [<c0104f4b>] show_trace+0x1b/0x20
> Oct 15 16:24:38 larrylap kernel: [<c0104f76>] dump_stack+0x26/0x30
> Oct 15 16:24:38 larrylap kernel: [<c0131099>]
> print_infinite_recursion_bug+0x49/0x50
> Oct 15 16:24:38 larrylap kernel: [<c01311d5>]
> find_usage_backwards+0x65/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131210>]
> find_usage_backwards+0xa0/0xd0
> Oct 15 16:24:38 larrylap kernel: [<c0131e27>] check_usage+0x27/0x280
> Oct 15 16:24:38 larrylap kernel: [<c01337a0>] __lock_acquire+0xac0/0xdc0
> Oct 15 16:24:38 larrylap kernel: [<c0133e18>] lock_acquire+0x68/0x90
> Oct 15 16:24:38 larrylap kernel: [<c0310788>]
> _spin_lock_irqsave+0x48/0x60
> Oct 15 16:24:38 larrylap kernel: [<c0112713>]
> change_page_attr+0x13/0x260
> Oct 15 16:24:38 larrylap kernel: [<c0112996>] kernel_map_pages+0x36/0xa0
> Oct 15 16:24:38 larrylap kernel: [<c0146c68>]
> free_hot_cold_page+0x98/0x130
> Oct 15 16:24:38 larrylap kernel: [<c0146d5a>] free_hot_page+0xa/0x10
> Oct 15 16:24:38 larrylap kernel: [<c0146d8a>] __free_pages+0x2a/0x40
> Oct 15 16:24:38 larrylap kernel: [<c0146dce>] free_pages+0x2e/0x40
> Oct 15 16:24:38 larrylap kernel: [<c015ac39>] kmem_freepages+0x79/0xa0
> Oct 15 16:24:38 larrylap kernel: [<c015c242>] slab_destroy+0x112/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c5b2>]
> cache_flusharray+0x72/0x150
> Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
> Oct 15 16:24:38 larrylap kernel: [<c015c277>] slab_destroy+0x147/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c424>] free_block+0x154/0x1a0
> Oct 15 16:24:38 larrylap kernel: [<c015c5b2>]
> cache_flusharray+0x72/0x150
> Oct 15 16:24:38 larrylap kernel: [<c015c106>] kmem_cache_free+0xb6/0xe0
> Oct 15 16:24:38 larrylap kernel: [<c01d59df>]
> ext3_destroy_inode+0x1f/0x30
> Oct 15 16:24:38 larrylap kernel: [<c017a02b>] destroy_inode+0x2b/0x60
> Oct 15 16:24:38 larrylap kernel: [<c017aae1>] dispose_list+0x81/0x100
> Oct 15 16:24:38 larrylap kernel: [<c017ad50>]
> shrink_icache_memory+0x1f0/0x230
> Oct 15 16:24:38 larrylap kernel: [<c0149c72>] shrink_slab+0x122/0x190
> Oct 15 16:24:38 larrylap kernel: [<c014ad87>] kswapd+0x297/0x420
> Oct 15 16:24:38 larrylap kernel: [<c012c269>] kthread+0xe9/0xf0
> Oct 15 16:24:38 larrylap kernel: [<c0101005>]
> kernel_thread_helper+0x5/0x10
>
>
> Larry
> -
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