From: Dave Hansen <haveblue@us.ibm.com>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.5.31 kmap_atomic copy_*_user benefits
Date: Thu, 15 Aug 2002 19:10:13 -0700 [thread overview]
Message-ID: <3D5C5F05.7080004@us.ibm.com> (raw)
In-Reply-To: 20020815232126.GR15685@holomorphy.com
William Lee Irwin III wrote:
> With and without kmap_atomic() -based copy_*_user() patches from akpm.
> Taken on a 16x/16GB box.
Have you seen any instability with these things applied? I seem to be
getting a fair amount of these BUG()s. But, I imagine that it could
be a race uncovered because of the serialization that highmem locks
caused.
kernel BUG at softirq.c:229!
invalid operand: 0000
CPU: 4
EIP: 0060:[<8011c8dd>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000 ebx: 80374f54 ecx: 8037e194 edx: ffffffff
esi: 00000000 edi: f7fba000 ebp: 80357560 esp: f7fbbf38
ds: 0068 es: 0068 ss: 0068
Stack: 00000001 80353960 fffffffe 00000080 8011c62a 80353960 00000000
8033b800
00000000 f7fbbf78 00000046 801092e1 f7fba000 80105334 00000000
802de388
00000000 80107d28 f7fba000 00000300 f7fba000 80105334 00000000
00000000
Call Trace: [<8011c62a>] [<801092e1>] [<80105334>] [<80107d28>]
[<80105334>]
[<8010535d>] [<801053b3>] [<801180fd>]
Code: 0f 0b e5 00 13 74 27 80 8b 43 10 50 8b 43 0c ff d0 83 c4 04
>>EIP; 8011c8dd <tasklet_hi_action+5d/c4> <=====
>>ebx; 80374f54 <bh_task_vec+14/280>
>>ecx; 8037e194 <tv1+14/804>
>>ebp; 80357560 <__bss_start+0/0>
Trace; 8011c62a <do_softirq+5a/ac>
Trace; 801092e1 <do_IRQ+f1/100>
Trace; 80105334 <poll_idle+0/48>
Trace; 80107d28 <common_interrupt+18/20>
Trace; 80105334 <poll_idle+0/48>
Trace; 8010535d <poll_idle+29/48>
Trace; 801053b3 <cpu_idle+37/48>
Trace; 801180fd <printk+125/140>
Code; 8011c8dd <tasklet_hi_action+5d/c4>
00000000 <_EIP>:
Code; 8011c8dd <tasklet_hi_action+5d/c4> <=====
0: 0f 0b ud2a <=====
Code; 8011c8df <tasklet_hi_action+5f/c4>
2: e5 00 in $0x0,%eax
Code; 8011c8e1 <tasklet_hi_action+61/c4>
4: 13 74 27 80 adc 0xffffff80(%edi,1),%esi
Code; 8011c8e5 <tasklet_hi_action+65/c4>
8: 8b 43 10 mov 0x10(%ebx),%eax
Code; 8011c8e8 <tasklet_hi_action+68/c4>
b: 50 push %eax
Code; 8011c8e9 <tasklet_hi_action+69/c4>
c: 8b 43 0c mov 0xc(%ebx),%eax
Code; 8011c8ec <tasklet_hi_action+6c/c4>
f: ff d0 call *%eax
Code; 8011c8ee <tasklet_hi_action+6e/c4>
11: 83 c4 04 add $0x4,%esp
--
Dave Hansen
haveblue@us.ibm.com
next prev parent reply other threads:[~2002-08-16 2:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-15 23:21 2.5.31 kmap_atomic copy_*_user benefits William Lee Irwin III
2002-08-15 23:26 ` William Lee Irwin III
2002-08-15 23:27 ` William Lee Irwin III
2002-08-15 23:30 ` William Lee Irwin III
2002-08-15 23:31 ` William Lee Irwin III
2002-08-15 23:35 ` William Lee Irwin III
2002-08-18 8:36 ` Daniel Phillips
2002-08-16 2:10 ` Dave Hansen [this message]
2002-08-16 2:44 ` William Lee Irwin III
2002-08-16 2:52 ` Dave Hansen
2002-08-16 6:33 ` Andrew Morton
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