ath9k_htc 1-1:1.0: ath9k_htc: Target is unresponsive
ath9k_htc: Failed to initialize the device
==================================================================
BUG: KCSAN: data-race in delete_from_page_cache_batch / nr_blockdev_pages

write to 0xffff8881201a1b50 of 8 bytes by task 30856 on cpu 0:
 page_cache_delete_batch mm/filemap.c:340 [inline]
 delete_from_page_cache_batch+0x5d1/0x830 mm/filemap.c:358
 truncate_inode_pages_range+0x492/0xf10 mm/truncate.c:366
 truncate_inode_pages+0x20/0x30 mm/truncate.c:476
 kill_bdev fs/block_dev.c:86 [inline]
 __blkdev_put+0x205/0x4a0 fs/block_dev.c:1778
 blkdev_put+0x1e6/0x210 fs/block_dev.c:1846
 blkdev_close+0x47/0x50 fs/block_dev.c:1853
 __fput+0x246/0x4d0 fs/file_table.c:281
 ____fput+0x11/0x20 fs/file_table.c:314
 task_work_run+0x8e/0x110 kernel/task_work.c:135
 exit_task_work include/linux/task_work.h:25 [inline]
 do_exit+0x6d4/0x16a0 kernel/exit.c:806
 do_group_exit+0xcb/0x180 kernel/exit.c:903
 get_signal+0x106d/0x1650 kernel/signal.c:2743
 arch_do_signal+0x25/0x270 arch/x86/kernel/signal.c:811
 exit_to_user_mode_loop kernel/entry/common.c:135 [inline]
 exit_to_user_mode_prepare+0x12d/0x220 kernel/entry/common.c:166
 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:241
 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff8881201a1b50 of 8 bytes by task 3407 on cpu 1:
 nr_blockdev_pages+0x7c/0xd0 fs/block_dev.c:914
 si_meminfo+0x3a/0x60 mm/page_alloc.c:5257
 update_defense_level+0x34/0x550 net/netfilter/ipvs/ip_vs_ctl.c:101
 defense_work_handler+0x1b/0x80 net/netfilter/ipvs/ip_vs_ctl.c:235
 process_one_work+0x3e1/0x9a0 kernel/workqueue.c:2269
 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415
 kthread+0x20d/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3407 Comm: kworker/1:2 Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_long defense_work_handler
==================================================================