==================================================================
BUG: KCSAN: data-race in setattr_copy / vfs_getattr_nosec

write to 0xffff88812e687db8 of 2 bytes by task 19 on cpu 1:
 setattr_copy+0x1af/0x1c0 fs/attr.c:247
 shmem_setattr+0xb0/0x450 mm/shmem.c:1118
 notify_change+0x8a3/0xa80 fs/attr.c:398
 handle_remove drivers/base/devtmpfs.c:333 [inline]
 handle drivers/base/devtmpfs.c:382 [inline]
 devtmpfs_work_loop+0x783/0x8d0 drivers/base/devtmpfs.c:395
 devtmpfsd+0x33/0x40 drivers/base/devtmpfs.c:437
 kthread+0x1d0/0x1f0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

read to 0xffff88812e687db8 of 2 bytes by task 22513 on cpu 0:
 generic_fillattr fs/stat.c:48 [inline]
 vfs_getattr_nosec+0x194/0x2e0 fs/stat.c:100
 vfs_getattr fs/stat.c:134 [inline]
 vfs_statx+0x128/0x290 fs/stat.c:199
 vfs_fstatat fs/stat.c:217 [inline]
 vfs_stat include/linux/fs.h:3236 [inline]
 __do_sys_newstat fs/stat.c:359 [inline]
 __se_sys_newstat+0x46/0x250 fs/stat.c:355
 __x64_sys_newstat+0x2d/0x40 fs/stat.c:355
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22513 Comm: syz-executor.4 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
loop4: detected capacity change from 0 to 127
 loop4: p2 < > p3 p4 < p5 >
loop4: p3 size 1914664839 extends beyond EOD, truncated
loop4: p5 size 1914664839 extends beyond EOD, truncated