在 2024/4/24 11:39, libaokun@xxxxxxxxxxxxxxx 写道:
From: Baokun Li <libaokun1@xxxxxxxxxx>
This prevents concurrency from causing access to a freed req.
Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
Reviewed-by: Jia Zhu <zhujia.zj@xxxxxxxxxxxxx>
---
fs/cachefiles/daemon.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
index 6465e2574230..ccb7b707ea4b 100644
--- a/fs/cachefiles/daemon.c
+++ b/fs/cachefiles/daemon.c
@@ -159,6 +159,7 @@ static void cachefiles_flush_reqs(struct cachefiles_cache *cache)
xa_for_each(xa, index, req) {
req->error = -EIO;
complete(&req->done);
+ __xa_erase(xa, index);
}
xa_unlock(xa);
