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| author | Peter Zijlstra <peterz@infradead.org> | 2021-06-17 20:57:18 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-06-22 16:42:08 +0200 |
| commit | f8b298cc39f0619544c607eaef09fd0b2afd10f3 (patch) | |
| tree | e50196d9eeaab1501eb66ece492b6289b39e5f84 | |
| parent | locking/selftests: Add a selftest for check_irq_usage() (diff) | |
| download | linux-f8b298cc39f0619544c607eaef09fd0b2afd10f3.tar.xz linux-f8b298cc39f0619544c607eaef09fd0b2afd10f3.zip | |
lockdep: Fix wait-type for empty stack
Even the very first lock can violate the wait-context check, consider
the various IRQ contexts.
Fixes: de8f5e4f2dc1 ("lockdep: Introduce wait-type checks")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210617190313.256987481@infradead.org
| -rw-r--r-- | kernel/locking/lockdep.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 6ff1e8405a83..0584b2090084 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4688,7 +4688,7 @@ static int check_wait_context(struct task_struct *curr, struct held_lock *next) u8 curr_inner; int depth; - if (!curr->lockdep_depth || !next_inner || next->trylock) + if (!next_inner || next->trylock) return 0; if (!next_outer) |