diff options
| author |   Paul E. McKenney <paulmck@linux.ibm.com> | 2018-11-30 10:06:46 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-01-25 15:36:40 -0800 |
| commit | c8ca1aa774b20f182733d1661f3b6aa3105338e7 (patch) | |
| tree | 4bf5a3fd65d0e71fe2f1de535859dddd9c6214d7 /include/linux/srcu.h | |
| parent | Merge branches 'consolidate.2019.01.26a' and 'fwd.2019.01.26a' into HEAD (diff) | |
| download | wireguard-linux-c8ca1aa774b20f182733d1661f3b6aa3105338e7.tar.xz wireguard-linux-c8ca1aa774b20f182733d1661f3b6aa3105338e7.zip | |
srcu: Check for invalid idx argument in srcu_read_unlock()
The current SRCU implementation has an idx argument of zero or one,
and never anything else. This commit therefore adds a WARN_ON_ONCE()
to complain if this restriction is violated.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'include/linux/srcu.h')
| -rw-r--r-- | include/linux/srcu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/srcu.h b/include/linux/srcu.h index c614375cd264..33cf83b9bda8 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -223,6 +223,7 @@ srcu_read_lock_notrace(struct srcu_struct *ssp) __acquires(ssp) static inline void srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases(ssp) { + WARN_ON_ONCE(idx & ~0x1); rcu_lock_release(&(ssp)->dep_map); __srcu_read_unlock(ssp, idx); } |