bridge0: entered promiscuous mode team0: entered promiscuous mode BUG: sleeping function called from invalid context at kernel/locking/mutex.c:579 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 12313, name: syz.0.1556 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by syz.0.1556/12313: #0: ffff80008f57f450 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160 #1: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 #2: ffff0000c9aec368 (&dev_addr_list_lock_key#6/1){+...}-{3:3}, at: netif_addr_lock_bh include/linux/netdevice.h:4805 [inline] #2: ffff0000c9aec368 (&dev_addr_list_lock_key#6/1){+...}-{3:3}, at: dev_uc_add+0x5c/0x104 net/core/dev_addr_lists.c:689 Preemption disabled at: [] local_bh_disable+0x28/0x34 include/linux/bottom_half.h:20 CPU: 0 UID: 0 PID: 12313 Comm: syz.0.1556 Not tainted 6.16.0-rc1-syzkaller-g19272b37aa4f #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 __might_resched+0x348/0x4c4 kernel/sched/core.c:8800 __might_sleep+0x94/0x110 kernel/sched/core.c:8729 __mutex_lock_common+0x10c/0x2190 kernel/locking/mutex.c:579 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 team_change_rx_flags+0x44/0x1d8 drivers/net/team/team_core.c:1781 dev_change_rx_flags net/core/dev.c:9241 [inline] __dev_set_promiscuity+0x454/0x634 net/core/dev.c:9285 netif_set_promiscuity+0x60/0xf4 net/core/dev.c:9305 dev_set_promiscuity+0x104/0x1fc net/core/dev_api.c:287 br_port_set_promisc net/bridge/br_if.c:108 [inline] br_manage_promisc+0x3cc/0x48c net/bridge/br_if.c:157 br_dev_change_rx_flags+0x40/0x50 net/bridge/br_device.c:186 dev_change_rx_flags net/core/dev.c:9241 [inline] __dev_set_promiscuity+0x454/0x634 net/core/dev.c:9285 __dev_set_rx_mode+0x140/0x204 net/core/dev.c:-1 dev_uc_add+0xb8/0x104 net/core/dev_addr_lists.c:693 vlan_dev_open+0x300/0x4f0 net/8021q/vlan_dev.c:272 __dev_open+0x42c/0x830 net/core/dev.c:1683 __dev_change_flags+0x1ac/0x54c net/core/dev.c:9458 rtnl_configure_link net/core/rtnetlink.c:3577 [inline] rtnl_newlink_create+0x498/0x9ac net/core/rtnetlink.c:3833 __rtnl_newlink net/core/rtnetlink.c:3940 [inline] rtnl_newlink+0x1194/0x15dc net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x664/0x97c net/core/rtnetlink.c:6944 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6971 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 ============================= [ BUG: Invalid wait context ] 6.16.0-rc1-syzkaller-g19272b37aa4f #0 Tainted: G W ----------------------------- syz.0.1556/12313 is trying to lock: ffff0000dd10ce00 (team->team_lock_key#3){+.+.}-{4:4}, at: team_change_rx_flags+0x44/0x1d8 drivers/net/team/team_core.c:1781 other info that might help us debug this: context-{5:5} 3 locks held by syz.0.1556/12313: #0: ffff80008f57f450 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160 #1: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 #2: ffff0000c9aec368 (&dev_addr_list_lock_key#6/1){+...}-{3:3}, at: netif_addr_lock_bh include/linux/netdevice.h:4805 [inline] #2: ffff0000c9aec368 (&dev_addr_list_lock_key#6/1){+...}-{3:3}, at: dev_uc_add+0x5c/0x104 net/core/dev_addr_lists.c:689 stack backtrace: CPU: 0 UID: 0 PID: 12313 Comm: syz.0.1556 Tainted: G W 6.16.0-rc1-syzkaller-g19272b37aa4f #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_lock_invalid_wait_context kernel/locking/lockdep.c:4833 [inline] check_wait_context kernel/locking/lockdep.c:4905 [inline] __lock_acquire+0xaec/0x30a4 kernel/locking/lockdep.c:5190 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 __mutex_lock_common+0x1d0/0x2190 kernel/locking/mutex.c:602 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 team_change_rx_flags+0x44/0x1d8 drivers/net/team/team_core.c:1781 dev_change_rx_flags net/core/dev.c:9241 [inline] __dev_set_promiscuity+0x454/0x634 net/core/dev.c:9285 netif_set_promiscuity+0x60/0xf4 net/core/dev.c:9305 dev_set_promiscuity+0x104/0x1fc net/core/dev_api.c:287 br_port_set_promisc net/bridge/br_if.c:108 [inline] br_manage_promisc+0x3cc/0x48c net/bridge/br_if.c:157 br_dev_change_rx_flags+0x40/0x50 net/bridge/br_device.c:186 dev_change_rx_flags net/core/dev.c:9241 [inline] __dev_set_promiscuity+0x454/0x634 net/core/dev.c:9285 __dev_set_rx_mode+0x140/0x204 net/core/dev.c:-1 dev_uc_add+0xb8/0x104 net/core/dev_addr_lists.c:693 vlan_dev_open+0x300/0x4f0 net/8021q/vlan_dev.c:272 __dev_open+0x42c/0x830 net/core/dev.c:1683 __dev_change_flags+0x1ac/0x54c net/core/dev.c:9458 rtnl_configure_link net/core/rtnetlink.c:3577 [inline] rtnl_newlink_create+0x498/0x9ac net/core/rtnetlink.c:3833 __rtnl_newlink net/core/rtnetlink.c:3940 [inline] rtnl_newlink+0x1194/0x15dc net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x664/0x97c net/core/rtnetlink.c:6944 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2534 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6971 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2566 ___sys_sendmsg+0x204/0x278 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __arm64_sys_sendmsg+0x184/0x238 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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 vlan4: entered promiscuous mode