On 9/3/06, Ingo Molnar <mingo@elte.hu> wrote:
* Miles Lane <miles.lane@gmail.com> wrote:
> Sorry Andrew. I don't see clues here to help me target the report to
> a maintainer. I hope this helps.
>
> BUG: MAX_STACK_TRACE_ENTRIES too low!
> turning off the locking correctness validator.
Miles, could you try the patch below? (Andrew: if this solves Miles'
problem then i think this is v2.6.18 material too. [The other
possibility would be some permanent stack-trace entries leak, in which
case the patch will not help. If that happens then we'll have to debug
this some more.])
Ingo
---------------->
From: Ingo Molnar <mingo@elte.hu>
Subject: lockdep: double the number of stack-trace entries
Miles Lane reported the "BUG: MAX_STACK_TRACE_ENTRIES too low!" message,
which means that during normal use his system produced enough lockdep
events so that the 128-thousand entries stack-trace array got exhausted.
Double the size of the array.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/lockdep_internals.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux/kernel/lockdep_internals.h
===================================================================
--- linux.orig/kernel/lockdep_internals.h
+++ linux/kernel/lockdep_internals.h
@@ -27,7 +27,7 @@
* Stack-trace: tightly packed array of stack backtrace
* addresses. Protected by the hash_lock.
*/
-#define MAX_STACK_TRACE_ENTRIES 131072UL
+#define MAX_STACK_TRACE_ENTRIES 262144UL
extern struct list_head all_lock_classes;
Ingo, there seemed to be a difference between the file you editted and
the one in Andrew's tree. I remade you patch so it applies cleanly.
I'll test and let you know. One word of caution, I only hit the
problem once and I'm not sure how to trigger the condition. I'll do
my best.
Thanks,
Miles
--- kernel/lockdep_internals.h~ 2006-09-03 09:59:29.000000000 -0700
+++ kernel/lockdep_internals.h 2006-09-03 10:00:55.000000000 -0700
@@ -27,7 +27,7 @@
* Stack-trace: tightly packed array of stack backtrace
* addresses. Protected by the hash_lock.
*/
-#define MAX_STACK_TRACE_ENTRIES 131072UL
+#define MAX_STACK_TRACE_ENTRIES 262144UL
extern struct list_head all_lock_classes;
--
VGER BF report: H 0.0351707
-
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