================================================================== BUG: KCSAN: data-race in __cgroup_account_cputime_field / cgroup_rstat_flush_locked write to 0xffffe8ffffd74d40 of 8 bytes by interrupt on cpu 1: __cgroup_account_cputime_field+0xb1/0x100 cgroup_account_cputime_field include/linux/cgroup.h:812 [inline] task_group_account_field kernel/sched/cputime.c:110 [inline] account_system_index_time+0x7c/0x90 kernel/sched/cputime.c:173 update_process_times+0x5c/0x160 kernel/time/timer.c:1783 tick_sched_handle kernel/time/tick-sched.c:226 [inline] tick_sched_timer+0x19d/0x220 kernel/time/tick-sched.c:1428 __run_hrtimer+0x163/0x460 kernel/time/hrtimer.c:1685 __hrtimer_run_queues kernel/time/hrtimer.c:1749 [inline] hrtimer_interrupt+0x37e/0xac0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0xa3/0x240 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 console_unlock+0x938/0xb60 kernel/printk/printk.c:2716 vprintk_emit+0xe7/0x3c0 kernel/printk/printk.c:2245 dev_vprintk_emit+0x1c9/0x1ed drivers/base/core.c:4604 dev_printk_emit+0x7e/0xa2 drivers/base/core.c:4615 __dev_printk+0xfa/0x103 drivers/base/core.c:4627 _dev_info+0x8b/0xad drivers/base/core.c:4673 attach_store+0x6ba/0x870 drivers/usb/usbip/vhci_sysfs.c:438 dev_attr_store+0x40/0x60 drivers/base/core.c:2110 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x1d3/0x2d0 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2074 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0x7f5/0x950 fs/read_write.c:590 ksys_write+0xd9/0x190 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffe8ffffd74d40 of 8 bytes by task 1823 on cpu 0: cgroup_base_stat_flush kernel/cgroup/rstat.c:328 [inline] cgroup_rstat_flush_locked+0x2ce/0x7e0 kernel/cgroup/rstat.c:161 cgroup_rstat_flush_irqsafe+0x24/0x40 kernel/cgroup/rstat.c:215 __mem_cgroup_flush_stats mm/memcontrol.c:652 [inline] flush_memcg_stats_dwork+0x6c/0xf0 mm/memcontrol.c:665 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307 worker_thread+0x616/0xa70 kernel/workqueue.c:2454 kthread+0x1bf/0x1e0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 value changed: 0x0000000a0a87ac9d -> 0x0000000a0b20431d Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1823 Comm: kworker/u4:3 Not tainted 5.17.0-rc2-syzkaller-00039-g9f7fb8de5d9b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_memcg_stats_dwork ================================================================== vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device