On 3 September 2017 at 12:43, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > This is: > > bh = head = page_buffers(page); > > Which looks odd and like some sort of VM/writeback change might > have triggered that we get a page without buffers, despite always > creating buffers in iomap_begin/end and page_mkwrite. > > Ccing linux-mm if anything odd happen in that area recently. > > Can you tell anything about the workload you are running? > On XFS partition stored launched KVM VM images, + home partition with Google Chrome profiles. Seems the bug triggering by high memory consumption and using swap which two times larger than system memory. I saw that it happens when swap has reached size of system memory. -- Best Regards, Mike Gavrilov. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>