syzbot

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BUG: KCSAN: data-race in list_lru_count_node / list_lru_del

read-write to 0xffff88810282bda0 of 8 bytes by task 3097 on cpu 1:
 list_lru_del+0x25c/0x290 mm/list_lru.c:154
 d_lru_del fs/dcache.c:441 [inline]
 select_collect+0x117/0x2a0 fs/dcache.c:1565
 d_walk+0x291/0x460 fs/dcache.c:1386
 shrink_dcache_parent+0x85/0x1a0 fs/dcache.c:1625
 vfs_rmdir+0x283/0x2f0 fs/namei.c:4193
 do_rmdir+0x194/0x320 fs/namei.c:4248
 __do_sys_unlinkat fs/namei.c:4424 [inline]
 __se_sys_unlinkat fs/namei.c:4418 [inline]
 __x64_sys_unlinkat+0xa4/0xb0 fs/namei.c:4418
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff88810282bda0 of 8 bytes by task 26224 on cpu 0:
 list_lru_count_node+0x2c/0x40 mm/list_lru.c:201
 list_lru_count include/linux/list_lru.h:131 [inline]
 shrink_dcache_sb+0x1bc/0x290 fs/dcache.c:1322
 reconfigure_super+0x3ef/0x580 fs/super.c:1121
 do_remount fs/namespace.c:2884 [inline]
 path_mount+0x969/0xb30 fs/namespace.c:3656
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3863
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x0000000000004ab6 -> 0x0000000000004ab1

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 26224 Comm: syz-executor.5 Not tainted 6.7.0-rc5-syzkaller-00014-g26aff849438c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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EXT4-fs (sda1): re-mounted 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 r/w. Quota mode: none.