================================================================== BUG: KCSAN: data-race in __delete_from_page_cache / nr_blockdev_pages write to 0xffff8881004055b8 of 8 bytes by task 12076 on cpu 0: 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 invalidate_disk+0x25/0xb0 block/genhd.c:651 __loop_clr_fd+0x41f/0x6c0 drivers/block/loop.c:1147 loop_clr_fd drivers/block/loop.c:1237 [inline] lo_ioctl+0x985/0x1270 drivers/block/loop.c:1562 blkdev_ioctl+0x20e/0x440 block/ioctl.c:609 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:860 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881004055b8 of 8 bytes by task 1915 on cpu 1: 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: 0x0000000000000001 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1915 Comm: kworker/1:3 Not tainted 5.16.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long defense_work_handler ==================================================================