================================================================== BUG: KCSAN: data-race in __delete_from_page_cache / nr_blockdev_pages write to 0xffff888100431c38 of 8 bytes by task 4671 on cpu 1: page_cache_delete mm/filemap.c:146 [inline] __delete_from_page_cache+0x1e1/0x2c0 mm/filemap.c:231 __remove_mapping+0x494/0x5f0 mm/vmscan.c:1276 remove_mapping+0x22/0x60 mm/vmscan.c:1303 invalidate_complete_page mm/truncate.c:216 [inline] invalidate_inode_page+0x15d/0x190 mm/truncate.c:265 __invalidate_mapping_pages+0x111/0x2b0 mm/truncate.c:504 invalidate_mapping_pages+0x23/0x30 mm/truncate.c:543 invalidate_bdev+0x67/0x80 block/bdev.c:89 ext4_put_super+0x620/0x910 fs/ext4/super.c:1247 generic_shutdown_super+0xdf/0x250 fs/super.c:465 kill_block_super+0x4a/0x90 fs/super.c:1397 deactivate_locked_super+0x6a/0xb0 fs/super.c:335 deactivate_super+0x85/0x90 fs/super.c:366 cleanup_mnt+0x267/0x2d0 fs/namespace.c:1137 __cleanup_mnt+0x15/0x20 fs/namespace.c:1144 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888100431c38 of 8 bytes by task 1919 on cpu 0: nr_blockdev_pages+0x7f/0xd0 block/bdev.c:522 si_meminfo+0x3a/0x60 mm/page_alloc.c:5778 update_defense_level+0x46/0x560 net/netfilter/ipvs/ip_vs_ctl.c:102 defense_work_handler+0x1b/0x80 net/netfilter/ipvs/ip_vs_ctl.c:236 process_one_work+0x3fc/0x980 kernel/workqueue.c:2298 worker_thread+0x616/0xa70 kernel/workqueue.c:2445 kthread+0x2c7/0x2e0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 value changed: 0x00000000000000be -> 0x00000000000000b8 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1919 Comm: kworker/0:4 Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long defense_work_handler ==================================================================