INFO: The task syz-executor:5828 has been waiting for writeback completion for more than 143 seconds. INFO: The task syz-executor:5828 has been waiting for writeback completion for more than 143 seconds. INFO: The task syz-executor:5828 has been waiting for writeback completion for more than 143 seconds. NILFS (loop2): I/O error writing log (start-blocknr=80, block-count=12) in segment 5 NILFS (loop2): I/O error writing log (start-blocknr=80, block-count=12) in segment 5 NILFS (loop2): I/O error writing log (start-blocknr=80, block-count=12) in segment 5 NILFS (loop2): I/O error writing log (start-blocknr=80, block-count=12) in segment 5 NILFS (loop2): disposed unprocessed dirty file(s) when stopping log writer Buffer I/O error on dev loop2, logical block 0, lost sync page write NILFS (loop2): unable to write superblock: err=-5 Buffer I/O error on dev loop2, logical block 511, lost sync page write NILFS (loop2): unable to write superblock: err=-5