Chen Qun 16b7f98db0 virtio: bugfix: add rcu_read_lock when vring_avail_idx is called
viring_avail_idx should be called within rcu_read_lock(),
or may get NULL caches in vring_get_region_caches() and
trigger assert().

Signed-off-by: Jinhua Cao <caojinhua1@huawei.com>
2022-03-19 14:42:32 +08:00
2019-11-06 19:50:55 +08:00
2019-09-30 11:15:46 -04:00
2019-09-30 11:15:46 -04:00
2022-03-19 14:31:23 +08:00
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