================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats / tick_do_update_jiffies64 read-write to 0xffffffff85c079c0 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:1096 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1113 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 console_emit_next_record+0x5f1/0x650 kernel/printk/printk.c:2703 console_unlock+0x1f1/0x420 kernel/printk/printk.c:2860 vprintk_emit+0x103/0x430 kernel/printk/printk.c:2268 vprintk_default+0x22/0x30 kernel/printk/printk.c:2279 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50 _printk+0x76/0x96 kernel/printk/printk.c:2289 validate_nla lib/nlattr.c:389 [inline] __nla_validate_parse+0x112f/0x1970 lib/nlattr.c:600 __nla_parse+0x3c/0x50 lib/nlattr.c:697 __nlmsg_parse include/net/netlink.h:748 [inline] genl_family_rcv_msg_attrs_parse+0x148/0x1a0 net/netlink/genetlink.c:565 genl_family_rcv_msg_doit net/netlink/genetlink.c:734 [inline] genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x4e5/0x750 net/netlink/genetlink.c:850 netlink_rcv_skb+0x13e/0x240 net/netlink/af_netlink.c:2540 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x58a/0x660 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x666/0x760 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x19a/0x230 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 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+0x63/0xcd read to 0xffffffff85c079c0 of 8 bytes by task 3614 on cpu 0: __mem_cgroup_flush_stats mm/memcontrol.c:634 [inline] mem_cgroup_flush_stats+0x7f/0x110 mm/memcontrol.c:643 prepare_scan_count+0xad/0x7f0 mm/vmscan.c:2799 shrink_node+0x1cc/0x930 mm/vmscan.c:6139 shrink_zones+0x2c1/0x5d0 mm/vmscan.c:6379 do_try_to_free_pages+0x195/0x760 mm/vmscan.c:6441 try_to_free_mem_cgroup_pages+0x1d1/0x420 mm/vmscan.c:6756 reclaim_high+0xcd/0x110 mm/memcontrol.c:2389 mem_cgroup_handle_over_high+0x75/0x120 mm/memcontrol.c:2574 resume_user_mode_work include/linux/resume_user_mode.h:58 [inline] exit_to_user_mode_loop+0xa5/0x130 kernel/entry/common.c:171 exit_to_user_mode_prepare kernel/entry/common.c:203 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:296 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000100050477 -> 0x0000000100050478 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3614 Comm: syz-executor.1 Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 ==================================================================