================================================================== 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+0x7b/0x2c0 kernel/time/tick-sched.c:1474 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 find_subdir fs/proc/proc_sysctl.c:957 [inline] get_subdir fs/proc/proc_sysctl.c:1007 [inline] sysctl_mkdir_p fs/proc/proc_sysctl.c:1307 [inline] __register_sysctl_table+0x9eb/0xc70 fs/proc/proc_sysctl.c:1392 register_net_sysctl+0x19d/0x1b0 net/sysctl_net.c:169 __addrconf_sysctl_register+0x19f/0x290 net/ipv6/addrconf.c:7089 addrconf_sysctl_register+0xd8/0x110 net/ipv6/addrconf.c:7136 ipv6_add_dev+0x8ff/0xab0 net/ipv6/addrconf.c:450 addrconf_notify+0x421/0x980 net/ipv6/addrconf.c:3552 notifier_call_chain kernel/notifier.c:93 [inline] raw_notifier_call_chain+0x6b/0x1c0 kernel/notifier.c:461 call_netdevice_notifiers_info net/core/dev.c:1935 [inline] call_netdevice_notifiers_extack net/core/dev.c:1973 [inline] call_netdevice_notifiers+0xc8/0x130 net/core/dev.c:1987 register_netdevice+0xb37/0xcd0 net/core/dev.c:10118 bond_newlink+0x3b/0x80 drivers/net/bonding/bond_netlink.c:565 rtnl_newlink_create net/core/rtnetlink.c:3443 [inline] __rtnl_newlink net/core/rtnetlink.c:3660 [inline] rtnl_newlink+0xe5a/0x15a0 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x807/0x8c0 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6413 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x56f/0x640 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x665/0x770 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x375/0x4c0 net/socket.c:2503 ___sys_sendmsg net/socket.c:2557 [inline] __sys_sendmsg+0x1e3/0x270 net/socket.c:2586 __do_sys_sendmsg net/socket.c:2595 [inline] __se_sys_sendmsg net/socket.c:2593 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2593 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffffffff85a079c0 of 8 bytes by task 22280 on cpu 0: do_flush_stats mm/memcontrol.c:653 [inline] mem_cgroup_flush_stats+0x5d/0xd0 mm/memcontrol.c:672 prepare_scan_count mm/vmscan.c:2915 [inline] shrink_node+0x2fa/0x1500 mm/vmscan.c:6500 shrink_zones mm/vmscan.c:6737 [inline] do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6799 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7114 memory_high_write+0x136/0x1d0 mm/memcontrol.c:6541 cgroup_file_write+0x16b/0x310 kernel/cgroup/cgroup.c:4071 kernfs_fop_write_iter+0x1ca/0x2b0 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:1868 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x47b/0x780 fs/read_write.c:584 ksys_write+0xeb/0x1a0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x000000010001f123 -> 0x000000010001f124 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 22280 Comm: syz-executor.3 Not tainted 6.4.0-rc3-syzkaller-00190-g0d85b27b0cc6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/16/2023 ==================================================================