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SubjectRe: [PATCH] lockdep: increase static allocations
On 01/08/2014 02:21 PM, Sasha Levin wrote:
> Fuzzing a recent kernel with a large configuration hits the static
> allocation limits and disables lockdep.
>
> This patch doubles the limits.
>
> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
> ---
> kernel/locking/lockdep_internals.h | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/kernel/locking/lockdep_internals.h b/kernel/locking/lockdep_internals.h
> index 4f560cf..51c4b24 100644
> --- a/kernel/locking/lockdep_internals.h
> +++ b/kernel/locking/lockdep_internals.h
> @@ -54,9 +54,9 @@ enum {
> * table (if it's not there yet), and we check it for lock order
> * conflicts and deadlocks.
> */
> -#define MAX_LOCKDEP_ENTRIES 16384UL
> +#define MAX_LOCKDEP_ENTRIES 32768UL
>
> -#define MAX_LOCKDEP_CHAINS_BITS 15
> +#define MAX_LOCKDEP_CHAINS_BITS 16
> #define MAX_LOCKDEP_CHAINS (1UL << MAX_LOCKDEP_CHAINS_BITS)
>
> #define MAX_LOCKDEP_CHAIN_HLOCKS (MAX_LOCKDEP_CHAINS*5)
> @@ -65,7 +65,7 @@ enum {
> * Stack-trace: tightly packed array of stack backtrace
> * addresses. Protected by the hash_lock.
> */
> -#define MAX_STACK_TRACE_ENTRIES 262144UL
> +#define MAX_STACK_TRACE_ENTRIES 524288UL
>
> extern struct list_head all_lock_classes;
> extern struct lock_chain lock_chains[];
>


Can someone pick the patch up please? PeterZ even (seemed to) acked it.


Thanks,
Sasha


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