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author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-09-03 11:40:01 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-18 21:16:23 +0300 |
commit | c401830b0125c30740da5784c3489d449a987572 (patch) | |
tree | f2cd23f425a663ae288eaad49101e35a83aa89d2 /net/core/net_namespace.c | |
parent | 255c569eeb468224c907a12438cc849bb124ef30 (diff) | |
download | linux-c401830b0125c30740da5784c3489d449a987572.tar.xz |
lockdep: Let lock_is_held_type() detect recursive read as read
[ Upstream commit 2507003a1d10917c9158077bf6030719d02c941e ]
lock_is_held_type(, 1) detects acquired read locks. It only recognized
locks acquired with lock_acquire_shared(). Read locks acquired with
lock_acquire_shared_recursive() are not recognized because a `2' is
stored as the read value.
Rework the check to additionally recognise lock's read value one and two
as a read held lock.
Fixes: e918188611f07 ("locking: More accurate annotations for read_lock()")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20210903084001.lblecrvz4esl4mrr@linutronix.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/core/net_namespace.c')
0 files changed, 0 insertions, 0 deletions