diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-20 12:50:50 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-20 12:50:50 -0800 |
| commit | 3324e6e803156b4296975555f566892e4e3f4fcf (patch) | |
| tree | 733c03e886f991630453986b4d0ea0eb8823e7fe | |
| parent | 222177397aabda681ca9a16ab498bba5c597cda0 (diff) | |
| parent | 28df029d53a2fd80c1b8674d47895648ad26dcfb (diff) | |
Merge tag 'locking_urgent_for_v5.17_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Borislav Petkov:
"Fix a NULL ptr dereference when dumping lockdep chains through
/proc/lockdep_chains"
* tag 'locking_urgent_for_v5.17_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Correct lock_classes index mapping
| -rw-r--r-- | kernel/locking/lockdep.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 4a882f83aeb9..f8a0212189ca 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -3462,7 +3462,7 @@ struct lock_class *lock_chain_get_class(struct lock_chain *chain, int i) u16 chain_hlock = chain_hlocks[chain->base + i]; unsigned int class_idx = chain_hlock_class_idx(chain_hlock); - return lock_classes + class_idx - 1; + return lock_classes + class_idx; } /* @@ -3530,7 +3530,7 @@ static void print_chain_keys_chain(struct lock_chain *chain) hlock_id = chain_hlocks[chain->base + i]; chain_key = print_chain_key_iteration(hlock_id, chain_key); - print_lock_name(lock_classes + chain_hlock_class_idx(hlock_id) - 1); + print_lock_name(lock_classes + chain_hlock_class_idx(hlock_id)); printk("\n"); } } |