================================================================== BUG: KCSAN: data-race in lru_add_drain_all / lru_cache_add write to 0xffff88813bc27550 of 1 bytes by task 3225 on cpu 0: pagevec_add include/linux/pagevec.h:74 [inline] lru_cache_add+0x7c/0x160 mm/swap.c:461 lru_cache_add_inactive_or_unevictable+0x46/0x160 mm/swap.c:493 __do_huge_pmd_anonymous_page+0x4fa/0x980 mm/huge_memory.c:640 do_huge_pmd_anonymous_page+0x6bc/0xa90 mm/huge_memory.c:772 create_huge_pmd mm/memory.c:4189 [inline] __handle_mm_fault mm/memory.c:4424 [inline] handle_mm_fault+0x1267/0x1840 mm/memory.c:4551 do_user_addr_fault+0x60c/0xc00 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x94/0x2a0 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 read to 0xffff88813bc27550 of 1 bytes by task 1638 on cpu 1: pagevec_count include/linux/pagevec.h:61 [inline] lru_add_drain_all+0x108/0x3c0 mm/swap.c:813 khugepaged_do_scan+0x47/0x330 mm/khugepaged.c:2213 khugepaged+0x75/0x680 mm/khugepaged.c:2274 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1638 Comm: khugepaged Tainted: G W 5.12.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================