On Thu, Apr 29, 2021 at 06:22:55PM +0800, Kefeng Wang wrote: > > On 2021/4/29 14:57, Mike Rapoport wrote: > > > > > Do you use SPARSMEM? If yes, what is your section size? > > > > What is the value if CONFIG_FORCE_MAX_ZONEORDER in your configuration? > > > Yes, > > > > > > CONFIG_SPARSEMEM=y > > > > > > CONFIG_SPARSEMEM_STATIC=y > > > > > > CONFIG_FORCE_MAX_ZONEORDER = 11 > > > > > > CONFIG_PAGE_OFFSET=0xC0000000 > > > CONFIG_HAVE_ARCH_PFN_VALID=y > > > CONFIG_HIGHMEM=y > > > #define SECTION_SIZE_BITS 26 > > > #define MAX_PHYSADDR_BITS 32 > > > #define MAX_PHYSMEM_BITS 32 > > > With the patch, the addr is aligned, but the panic still occurred, Is this the same panic at move_freepages() for range [de600, de7ff]? Do you enable CONFIG_ARM_LPAE? > new free memory log is below, > > memblock_free: [0xaf430000-0xaf44ffff] mem_init+0x158/0x23c > > memblock_free: [0xaf510000-0xaf53ffff] mem_init+0x158/0x23c > memblock_free: [0xaf560000-0xaf57ffff] mem_init+0x158/0x23c > memblock_free: [0xafd98000-0xafdc7fff] mem_init+0x158/0x23c > memblock_free: [0xafdd8000-0xafdfffff] mem_init+0x158/0x23c > memblock_free: [0xafe18000-0xafe7ffff] mem_init+0x158/0x23c > memblock_free: [0xafee0000-0xafefffff] mem_init+0x158/0x23c > __free_memory_core, range: 0x80a03000 - 0x80a04000, pfn: 80a03 - 80a04 > __free_memory_core, range: 0x80a08000 - 0x80b00000, pfn: 80a08 - 80b00 > __free_memory_core, range: 0x812e8058 - 0x83000000, pfn: 812e9 - 83000 > __free_memory_core, range: 0x85000000 - 0x85600000, pfn: 85000 - 85600 > __free_memory_core, range: 0x86a00000 - 0x87e00000, pfn: 86a00 - 87e00 > __free_memory_core, range: 0x8bd00000 - 0x8c500000, pfn: 8bd00 - 8c500 > __free_memory_core, range: 0x8e300000 - 0x8ed00000, pfn: 8e300 - 8ed00 > __free_memory_core, range: 0x90d00000 - 0xaf2c0000, pfn: 90d00 - af2c0 > __free_memory_core, range: 0xaf430000 - 0xaf450000, pfn: af430 - af450 > __free_memory_core, range: 0xaf510000 - 0xaf540000, pfn: af510 - af540 > __free_memory_core, range: 0xaf560000 - 0xaf580000, pfn: af560 - af580 > __free_memory_core, range: 0xafd98000 - 0xafdc8000, pfn: afd98 - afdc8 > __free_memory_core, range: 0xafdd8000 - 0xafe00000, pfn: afdd8 - afe00 > __free_memory_core, range: 0xafe18000 - 0xafe80000, pfn: afe18 - afe80 > __free_memory_core, range: 0xafee0000 - 0xaff00000, pfn: afee0 - aff00 > __free_memory_core, range: 0xaff80000 - 0xaff8d000, pfn: aff80 - aff8d > __free_memory_core, range: 0xafff2000 - 0xafff4580, pfn: afff2 - afff4 > __free_memory_core, range: 0xafffe000 - 0xafffe0e0, pfn: afffe - afffe > __free_memory_core, range: 0xafffe4fc - 0xafffe500, pfn: affff - afffe > __free_memory_core, range: 0xafffe6e4 - 0xafffe700, pfn: affff - afffe > __free_memory_core, range: 0xafffe8dc - 0xafffe8e0, pfn: affff - afffe > __free_memory_core, range: 0xafffe970 - 0xafffe980, pfn: affff - afffe > __free_memory_core, range: 0xafffe990 - 0xafffe9a0, pfn: affff - afffe > __free_memory_core, range: 0xafffe9a4 - 0xafffe9c0, pfn: affff - afffe > __free_memory_core, range: 0xafffeb54 - 0xafffeb60, pfn: affff - afffe > __free_memory_core, range: 0xafffecf4 - 0xafffed00, pfn: affff - afffe > __free_memory_core, range: 0xafffefc4 - 0xafffefd8, pfn: affff - afffe > __free_memory_core, range: 0xb0200000 - 0xc0000000, pfn: b0200 - b0200 > __free_memory_core, range: 0xcc000000 - 0xdca00000, pfn: cc000 - b0200 > __free_memory_core, range: 0xde700000 - 0xdea00000, pfn: de700 - b0200 The range [de600, de7ff] > __free_memory_core, range: 0xe0800000 - 0xe0c00000, pfn: e0800 - b0200 > __free_memory_core, range: 0xf4b00000 - 0xf7000000, pfn: f4b00 - b0200 > __free_memory_core, range: 0xfda00000 - 0xffffffff, pfn: fda00 - b0200 > > It seems that with SPARSEMEM we don't align the freed parts on pageblock > > boundaries. > > > > Can you try the patch below: > > > > diff --git a/mm/memblock.c b/mm/memblock.c > > index afaefa8fc6ab..1926369b52ec 100644 > > --- a/mm/memblock.c > > +++ b/mm/memblock.c > > @@ -1941,14 +1941,13 @@ static void __init free_unused_memmap(void) > > * due to SPARSEMEM sections which aren't present. > > */ > > start = min(start, ALIGN(prev_end, PAGES_PER_SECTION)); > > -#else > > +#endif > > /* > > * Align down here since the VM subsystem insists that the > > * memmap entries are valid from the bank start aligned to > > * MAX_ORDER_NR_PAGES. > > */ > > start = round_down(start, MAX_ORDER_NR_PAGES); > > -#endif > > /* > > * If we had a previous bank, and there is a space > > -- Sincerely yours, Mike.
