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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-02-25 15:39:50 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-27 03:33:43 +0100 |
| commit | c4d2603dac3a555e4bb324daf5cb5cdb5694eedd (patch) | |
| tree | aa471c625bdf28475ad8d5b6c48520ef547dac7d /lib/rhashtable.c | |
| parent | rhashtable: Fix use before NULL check in bucket_table_free (diff) | |
| download | linux-c4d2603dac3a555e4bb324daf5cb5cdb5694eedd.tar.xz linux-c4d2603dac3a555e4bb324daf5cb5cdb5694eedd.zip | |
rhashtable: Fix RCU dereference annotation in rht_bucket_nested
The current annotation is wrong as it says that we're only called
under spinlock. In fact it should be marked as under either
spinlock or RCU read lock.
Fixes: da20420f83ea ("rhashtable: Add nested tables")
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/rhashtable.c')
| -rw-r--r-- | lib/rhashtable.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/rhashtable.c b/lib/rhashtable.c index fac1a78afb39..c5b9b9351cec 100644 --- a/lib/rhashtable.c +++ b/lib/rhashtable.c @@ -1121,12 +1121,13 @@ struct rhash_head __rcu **rht_bucket_nested(const struct bucket_table *tbl, union nested_table *ntbl; ntbl = (union nested_table *)rcu_dereference_raw(tbl->buckets[0]); - ntbl = rht_dereference_bucket(ntbl[index].table, tbl, hash); + ntbl = rht_dereference_bucket_rcu(ntbl[index].table, tbl, hash); subhash >>= tbl->nest; while (ntbl && size > (1 << shift)) { index = subhash & ((1 << shift) - 1); - ntbl = rht_dereference_bucket(ntbl[index].table, tbl, hash); + ntbl = rht_dereference_bucket_rcu(ntbl[index].table, + tbl, hash); size >>= shift; subhash >>= shift; } |