================================================================== BUG: KCSAN: data-race in drop_nlink / generic_fillattr write to 0xffff88809d4f0928 of 4 bytes by task 12695 on cpu 1: drop_nlink+0x37/0x90 fs/inode.c:304 shmem_unlink+0x16f/0x190 mm/shmem.c:3021 shmem_rename2+0x2f4/0x430 mm/shmem.c:3113 vfs_rename+0x8c2/0xe30 fs/namei.c:4309 do_renameat2+0x554/0x940 fs/namei.c:4456 __do_sys_rename fs/namei.c:4502 [inline] __se_sys_rename fs/namei.c:4500 [inline] __x64_sys_rename+0x3a/0x40 fs/namei.c:4500 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88809d4f0928 of 4 bytes by task 5075 on cpu 0: generic_fillattr+0x74/0x180 fs/stat.c:41 shmem_getattr+0x232/0x2c0 mm/shmem.c:1073 vfs_getattr_nosec fs/stat.c:87 [inline] vfs_getattr fs/stat.c:124 [inline] vfs_statx_fd fs/stat.c:151 [inline] vfs_fstat include/linux/fs.h:3186 [inline] __do_sys_newfstat fs/stat.c:398 [inline] __se_sys_newfstat+0x1b6/0x510 fs/stat.c:395 __x64_sys_newfstat+0x2d/0x40 fs/stat.c:395 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: 5075 Comm: systemd-udevd Not tainted 5.9.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================