lkml.org 
[lkml]   [1999]   [Jun]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.2.9-ac2 locks solid
On Mon, 7 Jun 1999, Ingo Molnar wrote:

> the debugging trace sent by George looks like case 2). Note that case 2)
> is _likely_ to cause a stuck TLB IPI because the TLB flush is about the
> only kernel thing that actively waits for another CPU to do something,
> synchronously. So the 'TLB stuck...' message is just a side-effect, not
> the problem itself.

Ingo, et al,

Please note that I, and at least one other person, are seeing lockups from
quite a different place in the kernel, e.g.:


>>EIP; c012c033 <free_pages+b7/124>
Trace; c012eeeb <sys_open+8b/bc>
Trace; c010aaf1 <system_call+3d/44>
Trace; c010002b <startup_32+2b/a4>
Code; c012c033 <free_pages+b7/124> 00000000 <_EIP>:
Code; c012c033 <free_pages+b7/124> 0: f0 0f bb 1a lock btcl %ebx,(%edx)
Code; c012c037 <free_pages+bb/124> 4: 19 c0 sbbl %eax,%eax
Code; c012c039 <free_pages+bd/124> 6: 85 c0 testl %eax,%eax
Code; c012c03b <free_pages+bf/124> 8: 74 33 je 3d <_EIP+0x3d> c012c070 <free_pages+f4/124>
Code; c012c03d <free_pages+c1/124> a: 8b 45 f8 movl 0xfffffff8(%ebp),%eax
Code; c012c040 <free_pages+c4/124> d: f7 d8 negl %eax
Code; c012c042 <free_pages+c6/124> f: 31 f0 xorl %esi,%eax
Code; c012c044 <free_pages+c8/124> 11: 8d 04 80 leal (%eax,%eax,4),%eax

More details in my recent posting under related thread..

Steve



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:52    [W:0.044 / U:1.504 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site