On Thu, Mar 14, 2024 at 04:39:21PM +0800, zhaoyang.huang wrote: > From: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx> > > Panic[1] reported which is caused by lruvec->list break. Fix the race > between folio_isolate_lru and release_pages. > > race condition: > release_pages could meet a non-refered folio which escaped from being > deleted from LRU but add to another list_head I don't think the bug is in folio_isolate_lru() but rather in its caller. * Context: * * (1) Must be called with an elevated refcount on the folio. This is a * fundamental difference from isolate_lru_folios() (which is called * without a stable reference). So when release_pages() runs, it must not see a refcount decremented to zero, because the caller of folio_isolate_lru() is supposed to hold one. Your stack trace is for the thread which is calling release_pages(), not the one calling folio_isolate_lru(), so I can't help you debug further.
