toolchain: GCC 11.1.0
config: defconfig + fuzzing.config + kcsan.config
==================================================================
BUG: KCSAN: data-race in ktime_get / timekeeping_advance

write to 0xffffad8760341a38 of 296 bytes by interrupt on cpu 0:
 timekeeping_advance+0xa38/0x13f4
 update_wall_time+0x28/0x70
 tick_periodic+0x27c/0x3d0
 tick_handle_periodic+0x44/0x120
 arch_timer_handler_virt+0x68/0x84
 handle_percpu_devid_irq+0x12c/0x2b0
 generic_handle_domain_irq+0x98/0xcc
 gic_handle_irq+0x134/0x260
 call_on_irq_stack+0x2c/0x60
 do_interrupt_handler+0x100/0x104
 el1_interrupt+0x34/0x80
 el1h_64_irq_handler+0x1c/0x2c
 el1h_64_irq+0x78/0x7c
 _raw_spin_unlock_irq+0x7c/0x130
 alloc_pid+0x2f0/0x860
 copy_process+0x16e0/0x3bd0
 kernel_clone+0x10c/0x950
 kernel_thread+0xac/0xdc
 kthreadd+0x450/0x6a0
 ret_from_fork+0x10/0x20

read to 0xffffad8760341a58 of 8 bytes by task 0 on cpu 12:
 ktime_get+0x1f4/0x300
 tick_nohz_irq_exit+0x84/0x200
 __irq_exit_rcu+0x98/0x240
 irq_exit_rcu+0x1c/0x50
 el1_interrupt+0x38/0x80
 el1h_64_irq_handler+0x1c/0x2c
 el1h_64_irq+0x78/0x7c
 arch_local_irq_enable+0xc/0x20
 default_idle_call+0x58/0xd4
 do_idle+0x284/0x320
 cpu_startup_entry+0x30/0x90
 secondary_start_kernel+0x230/0x254
 __secondary_switched+0x94/0x98

value changed: 0x0000000e6ca08000 -> 0x0000000e7be2c000

Reported by Kernel Concurrency Sanitizer on:
CPU: 12 PID: 0 Comm: swapper/12 Not tainted 5.16.0-rc4-00002-g58b9ffdc5dc3 #1
Hardware name: linux,dummy-virt (DT)
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