================================================================== BUG: KCSAN: data-race in lru_add_drain_all / lru_cache_add write to 0xffff88813bc27550 of 1 bytes by task 29216 on cpu 0: pagevec_add include/linux/pagevec.h:74 [inline] lru_cache_add+0x7c/0x160 mm/swap.c:461 putback_lru_page+0x15/0x130 mm/vmscan.c:974 __unmap_and_move+0x51b/0x6a0 mm/migrate.c:1160 unmap_and_move+0x131/0x690 mm/migrate.c:1200 migrate_pages+0x2f7/0xfb0 mm/migrate.c:1472 do_mbind+0xe47/0x1030 mm/mempolicy.c:1357 kernel_mbind mm/mempolicy.c:1478 [inline] __do_sys_mbind mm/mempolicy.c:1485 [inline] __se_sys_mbind mm/mempolicy.c:1481 [inline] __x64_sys_mbind+0x142/0x170 mm/mempolicy.c:1481 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88813bc27550 of 1 bytes by task 29220 on cpu 1: pagevec_count include/linux/pagevec.h:61 [inline] lru_add_drain_all+0x108/0x3c0 mm/swap.c:813 migrate_prep+0xa/0x10 mm/migrate.c:73 do_mbind+0x417/0x1030 mm/mempolicy.c:1326 kernel_mbind mm/mempolicy.c:1478 [inline] __do_sys_mbind mm/mempolicy.c:1485 [inline] __se_sys_mbind mm/mempolicy.c:1481 [inline] __x64_sys_mbind+0x142/0x170 mm/mempolicy.c:1481 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 29220 Comm: syz-executor.3 Not tainted 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================