async_scan_lock is designed to protect the scanning_hosts list, but there
is no protection here.
Signed-off-by: Chaohai Chen <wdhh66@163.com>
Link: https://lore.kernel.org/r/20250221030755.219277-1-wdhh66@163.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
struct async_scan_data *data;
do {
- if (list_empty(&scanning_hosts))
- return 0;
+ scoped_guard(spinlock, &async_scan_lock)
+ if (list_empty(&scanning_hosts))
+ return 0;
/* If we can't get memory immediately, that's OK. Just
* sleep a little. Even if we never get memory, the async
* scans will finish eventually.