================================================================== BUG: KCSAN: data-race in dentry_lru_isolate / link_path_walk write to 0xffff88810bf10840 of 4 bytes by task 2186 on cpu 1: d_lru_isolate fs/dcache.c:442 [inline] dentry_lru_isolate+0x9f/0x200 fs/dcache.c:1166 __list_lru_walk_one+0xfb/0x300 mm/list_lru.c:222 list_lru_walk_one+0x75/0x90 mm/list_lru.c:266 list_lru_shrink_walk include/linux/list_lru.h:195 [inline] prune_dcache_sb+0x67/0xa0 fs/dcache.c:1220 super_cache_scan+0x23e/0x2e0 fs/super.c:105 do_shrink_slab+0x28b/0x550 mm/vmscan.c:513 shrink_slab+0xea/0x1c0 mm/vmscan.c:674 shrink_node_memcgs+0x27a/0x410 mm/vmscan.c:2655 shrink_node+0x9d2/0x11d0 mm/vmscan.c:2770 kswapd_shrink_node mm/vmscan.c:3513 [inline] balance_pgdat+0x6a5/0xc40 mm/vmscan.c:3671 kswapd+0x1de/0x310 mm/vmscan.c:3928 kthread+0x1fa/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 read to 0xffff88810bf10840 of 4 bytes by task 4891 on cpu 0: link_path_walk+0x329/0x710 fs/namei.c:2146 path_lookupat+0x7b/0x550 fs/namei.c:2333 filename_lookup+0xf2/0x380 fs/namei.c:2367 user_path_at_empty+0x3b/0x50 fs/namei.c:2647 user_path_at include/linux/namei.h:59 [inline] do_faccessat+0x260/0x500 fs/open.c:423 __do_sys_access fs/open.c:482 [inline] __se_sys_access fs/open.c:480 [inline] __x64_sys_access+0x33/0x40 fs/open.c:480 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 4891 Comm: systemd-udevd Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================