> > Thanks. Based on the crash report and the reproducer it indeed looks like > some mixing of iomap_folio_state and buffer heads attached to a folio > (iomap_folio_state is attached there but we end up calling > __block_write_begin_int() which expects buffer heads there) in GFS2. GFS2 > guys, care to have a look? > Thanks to Jan. Hi Andreas, It seems that iomap_write_begin is expected to handle I/O directly based on folio, rather than entering the buffer head path. Is it possible that GFS2 incorrectly passes data related to buffer head to iomap_write_begin? Could you please help us to check the exact cause of the issue? Thanks, Kun Hu
