================================================================== BUG: KCSAN: data-race in __unmap_and_move / delete_from_page_cache_batch write to 0xffffea0004580118 of 8 bytes by task 13207 on cpu 0: page_cache_delete_batch mm/filemap.c:329 [inline] delete_from_page_cache_batch+0x37b/0x820 mm/filemap.c:360 truncate_inode_pages_range+0x1d4/0xd60 mm/truncate.c:330 truncate_inode_pages mm/truncate.c:428 [inline] truncate_pagecache mm/truncate.c:754 [inline] truncate_setsize+0x97/0xc0 mm/truncate.c:779 fat_setattr+0x69a/0x7d0 fs/fat/file.c:538 notify_change+0x88f/0xa80 fs/attr.c:398 do_truncate+0xe8/0x130 fs/open.c:64 handle_truncate fs/namei.c:3020 [inline] do_open fs/namei.c:3371 [inline] path_openat+0x1b78/0x21b0 fs/namei.c:3500 do_filp_open+0xd9/0x1f0 fs/namei.c:3527 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1214 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffea0004580118 of 8 bytes by task 13191 on cpu 1: __PageMovable include/linux/page-flags.h:489 [inline] __unmap_and_move+0x42/0x6a0 mm/migrate.c:1028 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 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13191 Comm: syz-executor.5 Not tainted 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================