bridge0: port 4(team0) entered bl bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered disabled state team0: entered allmulticast mode team_slave_0: entered allmulticast mode team_slave_1: entered allmulticast mode BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 7226, name: syz.4.153 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 2 locks held by syz.4.153/7226: #0: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xacc/0x185c net/core/rtnetlink.c:4064 #1: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 CPU: 0 UID: 0 PID: 7226 Comm: syz.4.153 Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 __might_resched+0x374/0x4d0 kernel/sched/core.c:8818 __might_sleep+0x90/0xe4 kernel/sched/core.c:8747 __mutex_lock_common+0x120/0x2604 kernel/locking/mutex.c:578 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 netdev_lock include/linux/netdevice.h:2751 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] dev_set_allmulti+0xfc/0x218 net/core/dev_api.c:288 team_change_rx_flags+0x168/0x2dc drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9152 [inline] netif_set_allmulti+0x1e0/0x314 net/core/dev.c:9254 dev_set_allmulti+0x114/0x218 net/core/dev_api.c:289 br_add_if+0x2a0/0xc80 net/bridge/br_if.c:605 br_add_slave+0x34/0x48 net/bridge/br_device.c:375 do_set_master+0x42c/0x5bc net/core/rtnetlink.c:2946 do_setlink+0xc3c/0x36f0 net/core/rtnetlink.c:3159 rtnl_changelink net/core/rtnetlink.c:3769 [inline] __rtnl_newlink net/core/rtnetlink.c:3928 [inline] rtnl_newlink+0x123c/0x185c net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x670/0xa9c net/core/rtnetlink.c:6955 netlink_rcv_skb+0x234/0x408 net/netlink/af_netlink.c:2534 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6982 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x708/0xaa4 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x578/0x890 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x238/0x304 net/socket.c:2652 __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 ============================= [ BUG: Invalid wait context ] 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 Tainted: G W ----------------------------- syz.4.153/7226 is trying to lock: ffff0000c7f76d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff0000c7f76d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff0000c7f76d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: dev_set_allmulti+0xfc/0x218 net/core/dev_api.c:288 other info that might help us debug this: context-{5:5} 2 locks held by syz.4.153/7226: #0: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffff8000930815a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xacc/0x185c net/core/rtnetlink.c:4064 #1: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 7226 Comm: syz.4.153 Tainted: G W 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_lock_invalid_wait_context kernel/locking/lockdep.c:4831 [inline] check_wait_context kernel/locking/lockdep.c:4903 [inline] __lock_acquire+0xb4c/0x32c4 kernel/locking/lockdep.c:5185 lock_acquire+0x150/0x2e8 kernel/locking/lockdep.c:5866 __mutex_lock_common+0x1f0/0x2604 kernel/locking/mutex.c:601 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 netdev_lock include/linux/netdevice.h:2751 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] dev_set_allmulti+0xfc/0x218 net/core/dev_api.c:288 team_change_rx_flags+0x168/0x2dc drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9152 [inline] netif_set_allmulti+0x1e0/0x314 net/core/dev.c:9254 dev_set_allmulti+0x114/0x218 net/core/dev_api.c:289 br_add_if+0x2a0/0xc80 net/bridge/br_if.c:605 br_add_slave+0x34/0x48 net/bridge/br_device.c:375 do_set_master+0x42c/0x5bc net/core/rtnetlink.c:2946 do_setlink+0xc3c/0x36f0 net/core/rtnetlink.c:3159 rtnl_changelink net/core/rtnetlink.c:3769 [inline] __rtnl_newlink net/core/rtnetlink.c:3928 [inline] rtnl_newlink+0x123c/0x185c net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x670/0xa9c net/core/rtnetlink.c:6955 netlink_rcv_skb+0x234/0x408 net/netlink/af_netlink.c:2534 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6982 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x708/0xaa4 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x578/0x890 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x238/0x304 net/socket.c:2652 __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2655 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 dummy0: entered allmulticast mode bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered forwarding state