================================================================== BUG: KCSAN: data-race in do_settimeofday64 / ktime_get_real_seconds write to 0xffffffff8417e978 of 8 bytes by task 9795 on cpu 0: tk_set_xtime kernel/time/timekeeping.c:138 [inline] do_settimeofday64+0x558/0x700 kernel/time/timekeeping.c:1319 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_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffffff8417e978 of 8 bytes by task 9797 on cpu 1: ktime_get_real_seconds+0x11/0x20 kernel/time/timekeeping.c:1008 recently_deleted fs/ext4/ialloc.c:704 [inline] find_inode_bit+0x1f9/0x330 fs/ext4/ialloc.c:729 __ext4_new_inode+0xc7a/0x2f70 fs/ext4/ialloc.c:1064 ext4_symlink+0x2c3/0x700 fs/ext4/namei.c:3465 vfs_symlink+0x23a/0x300 fs/namei.c:4182 do_symlinkat+0xeb/0x280 fs/namei.c:4212 __do_sys_symlink fs/namei.c:4233 [inline] __se_sys_symlink fs/namei.c:4231 [inline] __x64_sys_symlink+0x32/0x40 fs/namei.c:4231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x000000006121fbd9 -> 0x0000000077359400 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 9797 Comm: syz-executor.3 Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================