================================================================== BUG: KCSAN: data-race in d_alloc_parallel / d_set_d_op write to 0xffff8881065fbd80 of 4 bytes by task 27496 on cpu 0: d_set_d_op+0x17f/0x220 fs/dcache.c:1910 simple_lookup+0x78/0x90 fs/libfs.c:74 __lookup_slow+0x181/0x280 fs/namei.c:1629 lookup_slow fs/namei.c:1646 [inline] walk_component+0x2a5/0x350 fs/namei.c:1942 lookup_last fs/namei.c:2397 [inline] path_lookupat+0x12d/0x570 fs/namei.c:2421 filename_lookup+0xff/0x390 fs/namei.c:2454 user_path_at_empty+0x3b/0x50 fs/namei.c:2734 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0x98/0x290 fs/stat.c:203 vfs_fstatat fs/stat.c:225 [inline] vfs_stat include/linux/fs.h:3380 [inline] __do_sys_newstat fs/stat.c:367 [inline] __se_sys_newstat+0x46/0x250 fs/stat.c:363 __x64_sys_newstat+0x2d/0x40 fs/stat.c:363 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881065fbd80 of 4 bytes by task 27495 on cpu 1: d_in_lookup include/linux/dcache.h:366 [inline] d_wait_lookup fs/dcache.c:2556 [inline] d_alloc_parallel+0x4ff/0xba0 fs/dcache.c:2644 __lookup_slow+0x7f/0x280 fs/namei.c:1614 lookup_slow fs/namei.c:1646 [inline] walk_component+0x2a5/0x350 fs/namei.c:1942 lookup_last fs/namei.c:2397 [inline] path_lookupat+0x12d/0x570 fs/namei.c:2421 filename_lookup+0xff/0x390 fs/namei.c:2454 user_path_at_empty+0x3b/0x50 fs/namei.c:2734 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0x98/0x290 fs/stat.c:203 vfs_fstatat fs/stat.c:225 [inline] vfs_stat include/linux/fs.h:3380 [inline] __do_sys_newstat fs/stat.c:367 [inline] __se_sys_newstat+0x46/0x250 fs/stat.c:363 __x64_sys_newstat+0x2d/0x40 fs/stat.c:363 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 27495 Comm: modprobe Tainted: G W 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================