From: Ingo Molnar <mingo@elte.hu>
To: Miles Lane <miles.lane@gmail.com>
Cc: Andrew Morton <akpm@osdl.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.18-rc5-mm1 + all hotfixes -- BUG: MAX_STACK_TRACE_ENTRIES too low!
Date: Sun, 3 Sep 2006 14:54:58 +0200 [thread overview]
Message-ID: <20060903125458.GA21390@elte.hu> (raw)
In-Reply-To: <a44ae5cd0609022003i2b3157a2kb8bcd6f4f778b6c9@mail.gmail.com>
* 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;
--
VGER BF report: U 0.5
next prev parent reply other threads:[~2006-09-03 13:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-03 3:03 2.6.18-rc5-mm1 + all hotfixes -- BUG: MAX_STACK_TRACE_ENTRIES too low! Miles Lane
2006-09-03 4:20 ` Andrew Morton
2006-09-03 12:54 ` Ingo Molnar [this message]
2006-09-03 17:05 ` Miles Lane
2006-09-03 18:15 ` Miles Lane
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