[BUG] fs/dlm: A possible sleep-in-atomic bug in dlm_master_lookup
Date
Sat, 7 Oct 2017 09:59:41 +0800
According to fs/dlm/lock.c, the kernel may sleep under a spinlock, and the function call path is: dlm_master_lookup (acquire the spinlock) dlm_send_rcom_lookup_dump create_rcom dlm_lowcomms_get_buffer nodeid2con mutex_lock --> may sleep
This bug is found by my static analysis tool and my code review.