================================================================== BUG: KCSAN: data-race in delete_from_page_cache_batch / page_address_in_vma write to 0xffffea0004cc3d18 of 8 bytes by task 13794 on cpu 1: page_cache_delete_batch mm/filemap.c:327 [inline] delete_from_page_cache_batch+0x37b/0x810 mm/filemap.c:358 truncate_inode_pages_range+0x482/0x10c0 mm/truncate.c:366 truncate_inode_pages mm/truncate.c:476 [inline] truncate_pagecache+0x4f/0x70 mm/truncate.c:845 ext4_setattr+0xae3/0xf60 fs/ext4/inode.c:5496 notify_change+0x7b3/0xa50 fs/attr.c:336 do_truncate+0xe0/0x120 fs/open.c:64 handle_truncate fs/namei.c:2912 [inline] do_open fs/namei.c:3258 [inline] path_openat+0x1a37/0x20a0 fs/namei.c:3371 do_filp_open+0xbd/0x1d0 fs/namei.c:3398 do_sys_openat2+0xa3/0x240 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_openat fs/open.c:1204 [inline] __se_sys_openat fs/open.c:1199 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1199 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffea0004cc3d18 of 8 bytes by task 13799 on cpu 0: PageAnon include/linux/page-flags.h:484 [inline] page_address_in_vma+0x4c/0x320 mm/rmap.c:704 new_page+0x4b/0x1e0 mm/mempolicy.c:1221 unmap_and_move+0x113/0x690 mm/migrate.c:1189 migrate_pages+0x2ad/0xee0 mm/migrate.c:1459 do_mbind+0xe83/0x1070 mm/mempolicy.c:1347 kernel_mbind mm/mempolicy.c:1468 [inline] __do_sys_mbind mm/mempolicy.c:1475 [inline] __se_sys_mbind mm/mempolicy.c:1471 [inline] __x64_sys_mbind+0x142/0x170 mm/mempolicy.c:1471 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 13799 Comm: syz-executor.4 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================