lkml.org 
[lkml]   [2011]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: select_task_rq_fair: WARNING: at kernel/lockdep.c match_held_lock
On (08/04/11 17:47), Peter Zijlstra wrote:
> On Thu, 2011-08-04 at 18:37 +0300, Sergey Senozhatsky wrote:
> > > > [ 132.794685] WARNING: at kernel/lockdep.c:3117 match_held_lock+0xf6/0x12e()
>
> Just to double check, that line is:
>
> if (DEBUG_LOCKS_WARN_ON(!hlock->nest_lock))
>
> in your kernel source?
>

Nope, that's `if (DEBUG_LOCKS_WARN_ON(!class))'

3106 static int match_held_lock(struct held_lock *hlock, struct lockdep_map *lock)
3107 {
3108 if (hlock->instance == lock)
3109 return 1;
3110
3111 if (hlock->references) {
3112 struct lock_class *class = lock->class_cache[0];
3113
3114 if (!class)
3115 class = look_up_lock_class(lock, 0);
3116
3117 if (DEBUG_LOCKS_WARN_ON(!class))
3118 return 0;
3119
3120 if (DEBUG_LOCKS_WARN_ON(!hlock->nest_lock))
3121 return 0;
3122
3123 if (hlock->class_idx == class - lock_classes + 1)
3124 return 1;
3125 }
3126
3127 return 0;
3128 }
3129


Sergey


\
 
 \ /
  Last update: 2011-08-04 17:57    [W:0.086 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site