Commit-ID: 834494b28024b39d45aea6bcc642b0fe94fe2503 Gitweb: https://git.kernel.org/tip/834494b28024b39d45aea6bcc642b0fe94fe2503 Author: Yuyang Du <duyuy...@gmail.com> AuthorDate: Mon, 6 May 2019 16:19:21 +0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 3 Jun 2019 11:55:36 +0200
locking/lockdep: Print the right depth for chain key collision Since chains are separated by IRQ context, so when printing a chain the depth should be consistent with it. Signed-off-by: Yuyang Du <duyuy...@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: bvanass...@acm.org Cc: frede...@kernel.org Cc: ming....@redhat.com Cc: will.dea...@arm.com Link: https://lkml.kernel.org/r/20190506081939.74287-6-duyuy...@gmail.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/locking/lockdep.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 3c477018e184..bc1efc12a8c5 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -2519,10 +2519,11 @@ print_chain_keys_held_locks(struct task_struct *curr, struct held_lock *hlock_ne struct held_lock *hlock; u64 chain_key = 0; int depth = curr->lockdep_depth; - int i; + int i = get_first_held_lock(curr, hlock_next); - printk("depth: %u\n", depth + 1); - for (i = get_first_held_lock(curr, hlock_next); i < depth; i++) { + printk("depth: %u (irq_context %u)\n", depth - i + 1, + hlock_next->irq_context); + for (; i < depth; i++) { hlock = curr->held_locks + i; chain_key = print_chain_key_iteration(hlock->class_idx, chain_key);
