Re: BUG in 2.6.18.1?

From: Srinivasa Ds
Date: Tue Oct 17 2006 - 08:19:58 EST

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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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Next message: Oleg Nesterov: "Re: [RFC][PATCH] ->signal->tty locking"
Previous message: Adrian Bunk: "Re: 2.6.18-mm2 boot failure on x86-64"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]