================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats / tick_do_update_jiffies64 read-write to 0xffffffff85a079c0 of 8 bytes by interrupt on cpu 1: tick_do_update_jiffies64+0x112/0x1b0 kernel/time/tick-sched.c:118 tick_sched_do_timer kernel/time/tick-sched.c:199 [inline] tick_sched_timer+0x7e/0x2d0 kernel/time/tick-sched.c:1473 __run_hrtimer+0x132/0x420 kernel/time/hrtimer.c:1685 __hrtimer_run_queues kernel/time/hrtimer.c:1749 [inline] hrtimer_interrupt+0x36e/0xa70 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:554 [inline] acpi_idle_enter+0x283/0x310 drivers/acpi/processor_idle.c:691 cpuidle_enter_state+0x2ee/0x7a0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 start_secondary+0x78/0x80 arch/x86/kernel/smpboot.c:266 secondary_startup_64_no_verify+0xcf/0xdb read to 0xffffffff85a079c0 of 8 bytes by task 23153 on cpu 0: __mem_cgroup_flush_stats mm/memcontrol.c:641 [inline] mem_cgroup_flush_stats+0x7f/0x110 mm/memcontrol.c:650 shrink_node+0x2fc/0x10f0 mm/vmscan.c:3150 shrink_zones+0x2c1/0x5d0 mm/vmscan.c:3482 do_try_to_free_pages+0x165/0x720 mm/vmscan.c:3540 try_to_free_mem_cgroup_pages+0x1cd/0x420 mm/vmscan.c:3854 try_charge_memcg+0x270/0x960 mm/memcontrol.c:2622 obj_cgroup_charge_pages mm/memcontrol.c:2999 [inline] __memcg_kmem_charge_page+0x2e4/0x480 mm/memcontrol.c:3025 __alloc_pages+0x1c1/0x340 mm/page_alloc.c:5443 alloc_pages+0x34d/0x450 __get_free_pages+0x8/0x30 mm/page_alloc.c:5475 io_mem_alloc fs/io_uring.c:10556 [inline] io_allocate_scq_urings+0x1e5/0x25f fs/io_uring.c:12325 io_uring_create+0x3eb/0x664 fs/io_uring.c:12473 io_uring_setup fs/io_uring.c:12566 [inline] __do_sys_io_uring_setup fs/io_uring.c:12572 [inline] __se_sys_io_uring_setup fs/io_uring.c:12569 [inline] __x64_sys_io_uring_setup+0x118/0x130 fs/io_uring.c:12569 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0x0000000100031cbd -> 0x0000000100031cbe Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23153 Comm: syz-executor.3 Not tainted 5.19.0-rc4-syzkaller-00166-gb336ad598a3b-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================