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Re: [PATCH] lockdep: print chain_key collision information

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH] lockdep: print chain_key collision information
Date 2016-03-30 19:20 +0200
Message-ID <rirWG-by-17@gated-at.bofh.it> (permalink)
References <riqee-7pH-19@gated-at.bofh.it> <rirN0-87-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Mar 30, 2016 at 07:03:36PM +0200, Alfredo Alvarez Fernandez wrote:
> A sequence of pairs [class_idx -> corresponding chain_key iteration]
> is printed for both the current held_lock chain and the cached chain.
> That exposes the two different class_idx sequences that led to that
> particular hash value.

Nice, thanks!

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Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-27 14:10 +0200
  Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Boqun Feng <boqun.feng@gmail.com> - 2016-03-27 15:40 +0200
  Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Theodore Ts'o <tytso@mit.edu> - 2016-03-27 20:30 +0200
    Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-27 21:50 +0200
      Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-27 22:30 +0200
  Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-27 22:50 +0200
    Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-27 23:50 +0200
    Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-28 08:40 +0200
    Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Ingo Molnar <mingo@kernel.org> - 2016-03-29 10:50 +0200
      Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-30 11:40 +0200
        Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-30 12:00 +0200
          Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-30 14:50 +0200
            Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-30 14:50 +0200
              Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-30 15:20 +0200
        Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-30 12:00 +0200
        Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Boqun Feng <boqun.feng@gmail.com> - 2016-03-30 12:10 +0200
          Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-30 12:40 +0200
            Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-30 13:10 +0200
          Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-31 17:50 +0200
            Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Boqun Feng <boqun.feng@gmail.com> - 2016-03-31 18:00 +0200
            Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-04-02 08:30 +0200
        Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Peter Zijlstra <peterz@infradead.org> - 2016-03-30 16:10 +0200
          Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-30 17:30 +0200
            [PATCH] lockdep: print chain_key collision information Alfredo Alvarez Fernandez <alfredoalvarezfernandez@gmail.com> - 2016-03-30 19:10 +0200
              Re: [PATCH] lockdep: print chain_key collision information Peter Zijlstra <peterz@infradead.org> - 2016-03-30 19:20 +0200
              [tip:core/urgent] locking/lockdep: Print chain_key collision  information tip-bot for Alfredo Alvarez Fernandez <tipbot@zytor.com> - 2016-04-01 08:40 +0200
      Re: [Linux-v4.6-rc1] ext4: WARNING: CPU: 2 PID: 2692 at  kernel/locking/lockdep.c:2017 __lock_acquire+0x180e/0x2260 Sedat Dilek <sedat.dilek@gmail.com> - 2016-03-30 11:40 +0200

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