| Message ID | 20200117133854.32550-2-frextrite@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3,1/3] drivers: target: target_core_device: Pass lockdep expression to RCU lists | expand |
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index d24e0a3ba3ff..7aa0240a7948 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -110,7 +110,8 @@ void core_tpg_add_node_to_devs( struct se_device *dev; mutex_lock(&tpg->tpg_lun_mutex); - hlist_for_each_entry_rcu(lun, &tpg->tpg_lun_hlist, link) { + hlist_for_each_entry_rcu(lun, &tpg->tpg_lun_hlist, link, + lockdep_is_held(&tpg->tpg_lun_mutex)) { if (lun_orig && lun != lun_orig) continue;
tpg->tpg_lun_hlist is traversed with hlist_for_each_entry_rcu outside an RCU read-side critical section but under the protection of tpg->tpg_lun_mutex. Hence, add the corresponding lockdep expression to the list traversal primitive to silence false-positive lockdep warnings, and harden RCU lists. Signed-off-by: Amol Grover <frextrite@gmail.com> --- drivers/target/target_core_tpg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)