netlink: 8 bytes leftover after parsing attributes in process `syz.4.7515'.
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BUG: KCSAN: data-race in ktime_get_coarse_real_ts64 / timekeeping_update_from_shadow

write to 0xffffffff895fa508 of 320 bytes by interrupt on cpu 0:
 timekeeping_update_from_shadow+0x448/0x480 kernel/time/timekeeping.c:866
 __timekeeping_advance+0xb36/0xcf0 kernel/time/timekeeping.c:2663
 timekeeping_advance kernel/time/timekeeping.c:2671 [inline]
 update_wall_time+0x21/0x50 kernel/time/timekeeping.c:2681
 tick_do_update_jiffies64+0x169/0x1c0 kernel/time/tick-sched.c:149
 tick_sched_do_timer kernel/time/tick-sched.c:253 [inline]
 tick_nohz_handler+0x88/0x380 kernel/time/tick-sched.c:310
 __run_hrtimer kernel/time/hrtimer.c:2074 [inline]
 __hrtimer_run_queues+0x1f8/0x510 kernel/time/hrtimer.c:2131
 hrtimer_interrupt+0x27b/0x860 kernel/time/hrtimer.c:2250
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x5f/0x1c0 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
 pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
 arch_safe_halt arch/x86/kernel/process.c:767 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:768
 default_idle_call+0x3b/0x60 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x183/0x2d0 kernel/sched/idle.c:355
 cpu_startup_entry+0x24/0x30 kernel/sched/idle.c:454
 rest_init+0x101/0x110 init/main.c:732
 start_kernel+0x49f/0x4d0 init/main.c:1190
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0xfc/0x100 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157

read to 0xffffffff895fa578 of 4 bytes by task 26696 on cpu 1:
 tk_xtime_coarse kernel/time/timekeeping.c:217 [inline]
 ktime_get_coarse_real_ts64+0x6b/0xf0 kernel/time/timekeeping.c:2714
 audit_get_stamp kernel/audit.c:1893 [inline]
 audit_log_start+0x5b7/0x730 kernel/audit.c:1971
 audit_seccomp+0x49/0x110 kernel/auditsc.c:2949
 seccomp_log kernel/seccomp.c:1048 [inline]
 __seccomp_filter+0x909/0x1360 kernel/seccomp.c:1342
 __seccomp_permit_syscall+0x7d/0x150 kernel/seccomp.c:1402
 syscall_trace_enter include/linux/entry-common.h:98 [inline]
 syscall_enter_from_user_mode_work include/linux/entry-common.h:147 [inline]
 do_syscall_64+0xca/0x360 arch/x86/entry/syscall_64.c:81
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x13136702 -> 0x13abfd85

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 26696 Comm: syz.4.7515 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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