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BUG: KCSAN: data-race in do_settimeofday64 / ktime_get_real_seconds

write to 0xffffffff882f98f8 of 8 bytes by task 14295 on cpu 1:
 tk_set_xtime kernel/time/timekeeping.c:138 [inline]
 do_settimeofday64+0x3cb/0x550 kernel/time/timekeeping.c:1323
 do_sys_settimeofday64+0x17b/0x1a0 kernel/time/time.c:195
 posix_clock_realtime_set+0x13/0x20 kernel/time/posix-timers.c:185
 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline]
 __x64_sys_clock_settime+0x136/0x160 kernel/time/posix-timers.c:1067
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffffff882f98f8 of 8 bytes by task 14298 on cpu 0:
 ktime_get_real_seconds+0x11/0x20 kernel/time/timekeeping.c:1013
 recently_deleted fs/ext4/ialloc.c:703 [inline]
 find_inode_bit+0x231/0x3a0 fs/ext4/ialloc.c:728
 __ext4_new_inode+0xd24/0x3070 fs/ext4/ialloc.c:1062
 ext4_create+0x165/0x300 fs/ext4/namei.c:2619
 lookup_open fs/namei.c:3104 [inline]
 open_last_lookups fs/namei.c:3178 [inline]
 path_openat+0xcc9/0x20a0 fs/namei.c:3366
 do_filp_open+0xbd/0x1d0 fs/namei.c:3396
 do_sys_openat2+0xa3/0x240 fs/open.c:1168
 do_sys_open fs/open.c:1184 [inline]
 __do_sys_open fs/open.c:1192 [inline]
 __se_sys_open fs/open.c:1188 [inline]
 __x64_sys_open+0xe2/0x110 fs/open.c:1188
 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: 14298 Comm: syz-executor.5 Not tainted 5.10.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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