syzbot

==================================================================
BUG: KCSAN: data-race in next_expiry_recalc / update_process_times

write to 0xffff888237c1de98 of 8 bytes by interrupt on cpu 1:
 next_expiry_recalc+0x187/0x1e0 kernel/time/timer.c:1967
 __run_timers kernel/time/timer.c:2414 [inline]
 __run_timer_base+0x2ee/0x640 kernel/time/timer.c:2428
 timer_expire_remote+0x2f/0x40 kernel/time/timer.c:2180
 tmigr_handle_remote_cpu kernel/time/timer_migration.c:938 [inline]
 tmigr_handle_remote_up kernel/time/timer_migration.c:1030 [inline]
 __walk_groups kernel/time/timer_migration.c:488 [inline]
 tmigr_handle_remote+0x4ee/0x910 kernel/time/timer_migration.c:1091
 run_timer_softirq+0x5f/0x70 kernel/time/timer.c:2451
 handle_softirqs+0xc3/0x280 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0x3e/0x90 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x73/0x80 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 __tsan_read2+0x4/0x180 kernel/kcsan/core.c:1023
 __io_commit_cqring_flush+0x20/0x1c0 io_uring/io_uring.c:624
 io_commit_cqring_flush io_uring/io_uring.h:364 [inline]
 io_cq_unlock_post io_uring/io_uring.c:668 [inline]
 __io_cqring_overflow_flush+0x464/0x470 io_uring/io_uring.c:705
 io_cqring_do_overflow_flush io_uring/io_uring.c:717 [inline]
 io_cqring_wait io_uring/io_uring.c:2524 [inline]
 __do_sys_io_uring_enter io_uring/io_uring.c:3289 [inline]
 __se_sys_io_uring_enter+0x11c6/0x15a0 io_uring/io_uring.c:3181
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3181
 x64_sys_call+0x25ab/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237c1de98 of 8 bytes by interrupt on cpu 0:
 run_local_timers kernel/time/timer.c:2466 [inline]
 update_process_times+0x8a/0x180 kernel/time/timer.c:2484
 tick_sched_handle kernel/time/tick-sched.c:276 [inline]
 tick_nohz_handler+0x250/0x2d0 kernel/time/tick-sched.c:297
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
 arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
 acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
 acpi_idle_do_entry+0x1d/0x30 drivers/acpi/processor_idle.c:573
 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0xcf/0x270 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x40/0x70 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x195/0x230 kernel/sched/idle.c:332
 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:430
 rest_init+0xef/0xf0 init/main.c:747
 start_kernel+0x581/0x5e0 init/main.c:1103
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x94/0xa0 arch/x86/kernel/head64.c:488
 common_startup_64+0x12c/0x137

value changed: 0x00000001000019cd -> 0x00000001000019ce

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W          6.10.0-rc1-syzkaller-00027-g4a4be1ad3a6e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
==================================================================