netdevsim netdevsim2 netdevsim1: renamed from eth1 netdevsim netdevsim2 netdevsim2: renamed from eth2 netdevsim netdevsim2 netdevsim3: renamed from eth3 ================================================================== BUG: KCSAN: data-race in pcpu_alloc_noprof / pcpu_free_area read-write to 0xffffffff88bdd3ac of 4 bytes by task 3265 on cpu 0: pcpu_update_empty_pages mm/percpu.c:602 [inline] pcpu_block_update_hint_free mm/percpu.c:1044 [inline] pcpu_free_area+0x4dc/0x570 mm/percpu.c:1302 free_percpu+0x1c6/0xb30 mm/percpu.c:2246 xt_percpu_counter_free+0x63/0x80 net/netfilter/x_tables.c:1951 cleanup_entry+0x186/0x1b0 net/ipv4/netfilter/ip_tables.c:654 __do_replace+0x467/0x570 net/ipv4/netfilter/ip_tables.c:1082 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline] do_ipt_set_ctl+0x811/0x8b0 net/ipv4/netfilter/ip_tables.c:1635 nf_setsockopt+0x195/0x1b0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xea/0x100 net/ipv4/ip_sockglue.c:1424 tcp_setsockopt+0x93/0xb0 net/ipv4/tcp.c:4029 sock_common_setsockopt+0x64/0x80 net/core/sock.c:3803 do_sock_setsockopt net/socket.c:2329 [inline] __sys_setsockopt+0x1cc/0x240 net/socket.c:2352 __do_sys_setsockopt net/socket.c:2361 [inline] __se_sys_setsockopt net/socket.c:2358 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2358 x64_sys_call+0x278d/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:55 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 0xffffffff88bdd3ac of 4 bytes by task 3778 on cpu 1: pcpu_alloc_noprof+0x9a7/0x10c0 mm/percpu.c:1894 fib_nh_common_init+0x4a/0x2b0 net/ipv4/fib_semantics.c:590 fib6_nh_init+0xea5/0x15d0 net/ipv6/route.c:3622 ip6_route_info_create+0x7b2/0xba0 net/ipv6/route.c:3809 addrconf_f6i_alloc+0x188/0x280 net/ipv6/route.c:4588 ipv6_add_addr+0x3c8/0x820 net/ipv6/addrconf.c:1120 add_addr+0x7b/0x1d0 net/ipv6/addrconf.c:3204 add_v4_addrs+0x47d/0x6b0 net/ipv6/addrconf.c:3269 addrconf_gre_config net/ipv6/addrconf.c:3546 [inline] addrconf_init_auto_addrs+0x173/0x6b0 net/ipv6/addrconf.c:3564 addrconf_notify+0x7ae/0x950 net/ipv6/addrconf.c:3745 notifier_call_chain kernel/notifier.c:93 [inline] raw_notifier_call_chain+0x6f/0x1d0 kernel/notifier.c:461 call_netdevice_notifiers_info+0xae/0x100 net/core/dev.c:1996 __dev_notify_flags+0xff/0x1a0 dev_change_flags+0xab/0xd0 net/core/dev.c:8918 do_setlink+0x844/0x2490 net/core/rtnetlink.c:2900 __rtnl_newlink net/core/rtnetlink.c:3696 [inline] rtnl_newlink+0x11a3/0x1690 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x6aa/0x710 net/core/rtnetlink.c:6646 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2550 rtnetlink_rcv+0x1c/0x30 net/core/rtnetlink.c:6664 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:744 __sys_sendto+0x1d6/0x260 net/socket.c:2209 __do_sys_sendto net/socket.c:2221 [inline] __se_sys_sendto net/socket.c:2217 [inline] __x64_sys_sendto+0x78/0x90 net/socket.c:2217 x64_sys_call+0x2959/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:45 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 value changed: 0x00000015 -> 0x00000016 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3778 Comm: syz-executor Not tainted 6.12.0-rc1-syzkaller-00306-g27cc6fdf7201 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== 8021q: adding VLAN 0 to HW filter on device bond0 8021q: adding VLAN 0 to HW filter on device team0 hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network 8021q: adding VLAN 0 to HW filter on device batadv0 veth0_vlan: entered promiscuous mode veth1_vlan: entered promiscuous mode veth0_macvtap: entered promiscuous mode veth1_macvtap: entered promiscuous mode batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: batadv0: Interface activated: batadv_slave_0 batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: batadv0: Interface activated: batadv_slave_1 netdevsim netdevsim2 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim2 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim2 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim2 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0