tipc: Disabling bearer tipc: Left network mode ================================================================== BUG: KCSAN: data-race in _prb_read_valid / data_alloc write to 0xffffffff86c6a358 of 8 bytes by task 677 on cpu 0: data_alloc+0x2fc/0x380 kernel/printk/printk_ringbuffer.c:1129 prb_reserve+0x8e3/0xaf0 kernel/printk/printk_ringbuffer.c:1727 vprintk_store+0x54a/0x910 kernel/printk/printk.c:2354 vprintk_emit+0x1a4/0x600 kernel/printk/printk.c:2455 vprintk_default+0x26/0x30 kernel/printk/printk.c:2494 vprintk+0x1d/0x30 kernel/printk/printk_safe.c:82 _printk+0x79/0xa0 kernel/printk/printk.c:2504 __netdev_printk+0x310/0x370 net/core/dev.c:12949 netdev_info+0xa6/0xd0 net/core/dev.c:12996 bond_enslave+0x1e3e/0x1f00 drivers/net/bonding/bond_main.c:2336 do_set_master+0x37b/0x450 net/core/rtnetlink.c:2986 do_setlink+0x976/0x2890 net/core/rtnetlink.c:3188 rtnl_changelink net/core/rtnetlink.c:3800 [inline] __rtnl_newlink net/core/rtnetlink.c:3973 [inline] rtnl_newlink+0x1086/0x1400 net/core/rtnetlink.c:4110 rtnetlink_rcv_msg+0x64b/0x720 net/core/rtnetlink.c:6997 netlink_rcv_skb+0x11e/0x220 net/netlink/af_netlink.c:2555 rtnetlink_rcv+0x1c/0x30 net/core/rtnetlink.c:7024 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5a7/0x680 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x5be/0x6f0 net/netlink/af_netlink.c:1899 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] __sys_sendto+0x42e/0x490 net/socket.c:2266 __do_sys_sendto net/socket.c:2273 [inline] __se_sys_sendto net/socket.c:2269 [inline] __x64_sys_sendto+0x76/0x90 net/socket.c:2269 x64_sys_call+0x2d35/0x3020 arch/x86/include/generated/asm/syscalls_64.h:45 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff86c6a358 of 16 bytes by task 7984 on cpu 1: desc_read kernel/printk/printk_ringbuffer.c:496 [inline] desc_read_finalized_seq kernel/printk/printk_ringbuffer.c:1934 [inline] prb_read kernel/printk/printk_ringbuffer.c:1982 [inline] _prb_read_valid+0x183/0x930 kernel/printk/printk_ringbuffer.c:2173 prb_read_valid+0x3c/0x60 kernel/printk/printk_ringbuffer.c:2245 __console_flush_and_unlock kernel/printk/printk.c:3392 [inline] console_unlock+0x146/0x280 kernel/printk/printk.c:3413 vprintk_emit+0x3e4/0x600 kernel/printk/printk.c:2479 vprintk_default+0x26/0x30 kernel/printk/printk.c:2494 vprintk+0x1d/0x30 kernel/printk/printk_safe.c:82 _printk+0x79/0xa0 kernel/printk/printk.c:2504 tipc_net_stop+0xd4/0x110 net/tipc/net.c:163 tipc_exit_net+0x64/0x130 net/tipc/core.c:112 ops_exit_list net/core/net_namespace.c:199 [inline] ops_undo_list+0x285/0x420 net/core/net_namespace.c:252 cleanup_net+0x37c/0x5b0 net/core/net_namespace.c:702 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x4d4/0x9a0 kernel/workqueue.c:3397 worker_thread+0x569/0x750 kernel/workqueue.c:3478 kthread+0x221/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 7984 Comm: kworker/u8:9 Tainted: G W syzkaller #0 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: netns cleanup_net ================================================================== hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 netdevsim netdevsim9 netdevsim3 (unregistering): unset [0, 0] type 1 family 0 port 8472 - 0 netdevsim netdevsim9 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim9 netdevsim2 (unregistering): unset [0, 0] type 1 family 0 port 8472 - 0 netdevsim netdevsim9 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim9 netdevsim1 (unregistering): unset [0, 0] type 1 family 0 port 8472 - 0 netdevsim netdevsim9 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim9 netdevsim0 (unregistering): unset [0, 0] type 1 family 0 port 8472 - 0 netdevsim netdevsim9 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state tipc: Resetting bearer bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves erspan0 (unregistering): left promiscuous mode tipc: Disabling bearer bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves bond1 (unregistering): (slave veth5): Releasing backup interface bond1 (unregistering): Released all slaves bond2 (unregistering): Released all slaves bond3 (unregistering): Released all slaves tipc: Left network mode tipc: Left network mode IPVS: stopping master sync thread 30637 ... hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 dummy0: left promiscuous mode hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed