================================================================== BUG: KCSAN: data-race in __dentry_kill / d_alloc_parallel read to 0xffff888125577180 of 4 bytes by task 15157 on cpu 0: dentry_unlist fs/dcache.c:544 [inline] __dentry_kill+0x1be/0x3c0 fs/dcache.c:575 dentry_kill fs/dcache.c:698 [inline] dput+0x3b5/0x750 fs/dcache.c:859 __lookup_slow+0x271/0x2a0 fs/namei.c:1666 lookup_slow+0x4f/0x70 fs/namei.c:1680 walk_component+0x4a2/0xe70 fs/namei.c:1800 lookup_last fs/namei.c:2263 [inline] path_lookupat.isra.0+0x13a/0x5a0 fs/namei.c:2308 filename_lookup+0x145/0x2b0 fs/namei.c:2338 user_path_at_empty+0x4c/0x70 fs/namei.c:2598 user_path_at include/linux/namei.h:49 [inline] vfs_statx+0xd9/0x190 fs/stat.c:187 vfs_stat include/linux/fs.h:3242 [inline] __do_sys_newstat+0x51/0xb0 fs/stat.c:341 __se_sys_newstat fs/stat.c:337 [inline] __x64_sys_newstat+0x3a/0x50 fs/stat.c:337 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff888125577180 of 4 bytes by task 15172 on cpu 1: d_alloc_parallel+0x533/0xe00 fs/dcache.c:2610 __lookup_slow+0xb4/0x2a0 fs/namei.c:1646 lookup_slow+0x4f/0x70 fs/namei.c:1680 walk_component+0x4a2/0xe70 fs/namei.c:1800 lookup_last fs/namei.c:2263 [inline] path_lookupat.isra.0+0x13a/0x5a0 fs/namei.c:2308 filename_lookup+0x145/0x2b0 fs/namei.c:2338 user_path_at_empty+0x4c/0x70 fs/namei.c:2598 user_path_at include/linux/namei.h:49 [inline] vfs_statx+0xd9/0x190 fs/stat.c:187 vfs_stat include/linux/fs.h:3242 [inline] __do_sys_newstat+0x51/0xb0 fs/stat.c:341 __se_sys_newstat fs/stat.c:337 [inline] __x64_sys_newstat+0x3a/0x50 fs/stat.c:337 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 15172 Comm: ps Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================