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BUG: KCSAN: data-race in dec_zone_page_state / release_pages

write to 0xffffea00016cce00 of 8 bytes by task 8707 on cpu 1:
 instrument_write include/linux/instrumented.h:42 [inline]
 __clear_bit include/asm-generic/bitops/instrumented-non-atomic.h:42 [inline]
 __ClearPageLRU include/linux/page-flags.h:337 [inline]
 release_pages+0x41c/0x8b0 mm/swap.c:940
 __pagevec_release+0x96/0xc0 mm/swap.c:972
 pagevec_release include/linux/pagevec.h:88 [inline]
 truncate_inode_pages_range+0x517/0xf60 mm/truncate.c:370
 truncate_inode_pages+0x20/0x30 mm/truncate.c:476
 diUnmount+0x87/0xa0 fs/jfs/jfs_imap.c:192
 jfs_umount+0xc8/0x1b0 fs/jfs/jfs_umount.c:73
 jfs_put_super+0x4c/0xb0 fs/jfs/super.c:194
 generic_shutdown_super+0xde/0x210 fs/super.c:464
 kill_block_super+0x4a/0x90 fs/super.c:1446
 deactivate_locked_super+0x6a/0xb0 fs/super.c:335
 deactivate_super+0x85/0x90 fs/super.c:366
 cleanup_mnt+0x277/0x2e0 fs/namespace.c:1118
 __cleanup_mnt+0x15/0x20 fs/namespace.c:1125
 task_work_run+0x8e/0x110 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:165 [inline]
 exit_to_user_mode_prepare+0x1b2/0x210 kernel/entry/common.c:192
 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:267
 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffea00016cce00 of 8 bytes by interrupt on cpu 0:
 page_to_nid include/linux/mm.h:1302 [inline]
 page_zone include/linux/mm.h:1444 [inline]
 dec_zone_page_state+0x13/0x110 mm/vmstat.c:542
 test_clear_page_writeback+0x3fb/0x480 mm/page-writeback.c:2765
 end_page_writeback+0xa7/0x110 mm/filemap.c:1467
 last_write_complete fs/jfs/jfs_metapage.c:318 [inline]
 metapage_write_end_io+0x2b7/0x2e0 fs/jfs/jfs_metapage.c:331
 bio_endio+0x293/0x360 block/bio.c:1447
 req_bio_endio block/blk-core.c:259 [inline]
 blk_update_request+0x525/0xba0 block/blk-core.c:1463
 blk_mq_end_request+0x22/0x50 block/blk-mq.c:562
 lo_complete_rq+0xca/0x180 drivers/block/loop.c:500
 blk_done_softirq+0x1a5/0x200 block/blk-mq.c:586
 __do_softirq+0x198/0x331 kernel/softirq.c:298
 run_ksoftirqd+0x2f/0x60 kernel/softirq.c:653
 smpboot_thread_fn+0x347/0x530 kernel/smpboot.c:165
 kthread+0x20d/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.9.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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