On Wed, 30 Mar 2022 16:29:28 -0400 Zi Yan <ziy@xxxxxxxxxx> wrote: > In the original code, it will jump back to continue_merging and still tries > to find the buddy. The crash means the found buddy is not valid, since its > pageblock migratetype is NULL. That seems to suggest the physical memory > range is not aligned to MAX_ORDER_NR_PAGES, which should not be the case. > But if (!page_is_buddy(page, buddy, order)) prevents further buddy merging. > I must be missing something. Not sure if this matters or not, but my kernel command line has: crashkernel=256M Could that have caused this to break? -- Steve
