Re: lockdep: BUG: MAX_LOCKDEP_ENTRIES too low!

[Sasha Levin]

On 12/19/2013 05:34 AM, Peter Zijlstra wrote:
> On Thu, Dec 19, 2013 at 12:53:56AM -0500, Sasha Levin wrote:
> > Hi all,
> >
> > I think that my bloated kernel managed to create way too many entries in the
> > dependency table. If that sounds right, I can send a patch to increase those.
> >
> > Attached /proc/lock_stat as requested as well.
>
> /proc/lockdep_stats not lock_stat :-)
>
> Do you still happen to have that?

Is the BUG message intentional ("Please attach the output of /proc/lock_stat to the bug report")?

Here's /proc/lockdep_stats:

 lock-classes:                         2397 [max: 8191]
 direct dependencies:                 16384 [max: 16384]
 indirect dependencies:               60481
 all direct dependencies:            308079
 dependency chains:                   21162 [max: 32768]
 dependency chain hlocks:             67298 [max: 163840]
 in-hardirq chains:                      51
 in-softirq chains:                     430
 in-process chains:                   19782
 stack-trace entries:                235133 [max: 262144]
 combined max dependencies:       443376596
 hardirq-safe locks:                     59
 hardirq-unsafe locks:                 1285
 softirq-safe locks:                    156
 softirq-unsafe locks:                 1136
 irq-safe locks:                        168
 irq-unsafe locks:                     1285
 hardirq-read-safe locks:                 4
 hardirq-read-unsafe locks:             357
 softirq-read-safe locks:                 7
 softirq-read-unsafe locks:             337
 irq-read-safe locks:                     8
 irq-read-unsafe locks:                 357
 uncategorized locks:                   281
 unused locks:                            0
 max locking depth:                      12
 max bfs queue depth:                   663
 chain lookup misses:                 21432
 chain lookup hits:               490237032
 cyclic checks:                       20219
 find-mask forwards checks:           12353
 find-mask backwards checks:         128734
 hardirq on events:               372837372
 hardirq off events:              372837362
 redundant hardirq ons:                3467
 redundant hardirq offs:          361517382
 softirq on events:                 3688513
 softirq off events:                3688541
 redundant softirq ons:                   0
 redundant softirq offs:                  0
 debug_locks:                             0


Thanks,
Sasha
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