Messages in this thread | | | Date | Thu, 4 Aug 2011 18:53:47 +0300 | From | Sergey Senozhatsky <> | Subject | Re: select_task_rq_fair: WARNING: at kernel/lockdep.c match_held_lock |
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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
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