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BUG: KCSAN: data-race in list_lru_add / list_lru_count_one

write to 0xffff8880ac6fb070 of 8 bytes by task 28582 on cpu 1:
 list_lru_add+0x218/0x460 mm/list_lru.c:137
 inode_lru_list_add fs/inode.c:427 [inline]
 inode_add_lru fs/inode.c:443 [inline]
 inode_add_lru+0x106/0x160 fs/inode.c:438
 iput_final fs/inode.c:1552 [inline]
 iput+0x499/0x4d0 fs/inode.c:1597
 dentry_unlink_inode+0x272/0x2e0 fs/dcache.c:374
 __dentry_kill+0x214/0x3b0 fs/dcache.c:579
 shrink_dentry_list+0x111/0x1d0 fs/dcache.c:1122
 prune_dcache_sb+0x89/0xb0 fs/dcache.c:1203
 super_cache_scan+0x1cb/0x2c0 fs/super.c:105
 do_shrink_slab+0x2a9/0x5b0 mm/vmscan.c:512
 shrink_slab_memcg mm/vmscan.c:582 [inline]
 shrink_slab+0x477/0x540 mm/vmscan.c:661
 shrink_node_memcgs mm/vmscan.c:2673 [inline]
 shrink_node+0x354/0x1000 mm/vmscan.c:2777
 shrink_zones mm/vmscan.c:2980 [inline]
 do_try_to_free_pages+0x230/0xb30 mm/vmscan.c:3033
 try_to_free_mem_cgroup_pages+0x1f7/0x4b0 mm/vmscan.c:3355
 reclaim_high.constprop.0+0xee/0x140 mm/memcontrol.c:2232
 mem_cgroup_handle_over_high+0x8f/0x180 mm/memcontrol.c:2313
 tracehook_notify_resume include/linux/tracehook.h:197 [inline]
 exit_to_usermode_loop+0x20a/0x2c0 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x218/0x240 arch/x86/entry/common.c:278
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:344

read to 0xffff8880ac6fb070 of 8 bytes by task 28581 on cpu 0:
 list_lru_count_one+0xb4/0x120 mm/list_lru.c:193
 list_lru_shrink_count include/linux/list_lru.h:123 [inline]
 super_cache_count+0xfa/0x190 fs/super.c:148
 do_shrink_slab+0xb3/0x5b0 mm/vmscan.c:430
 shrink_slab_memcg mm/vmscan.c:582 [inline]
 shrink_slab+0x477/0x540 mm/vmscan.c:661
 shrink_node_memcgs mm/vmscan.c:2673 [inline]
 shrink_node+0x354/0x1000 mm/vmscan.c:2777
 shrink_zones mm/vmscan.c:2980 [inline]
 do_try_to_free_pages+0x230/0xb30 mm/vmscan.c:3033
 try_to_free_mem_cgroup_pages+0x1f7/0x4b0 mm/vmscan.c:3355
 reclaim_high.constprop.0+0xee/0x140 mm/memcontrol.c:2232
 mem_cgroup_handle_over_high+0x8f/0x180 mm/memcontrol.c:2313
 tracehook_notify_resume include/linux/tracehook.h:197 [inline]
 exit_to_usermode_loop+0x20a/0x2c0 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_64+0x36e/0x390 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 28581 Comm: syz-executor.1 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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