team0: entered promiscuous mode team0 (unregistering): left promiscuous mode BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5530, name: syz.2.16 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 2 locks held by syz.2.16/5530: #0: ffffffff852c4bc0 (rtnl_mutex){....}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff852c4bc0 (rtnl_mutex){....}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #0: ffffffff852c4bc0 (rtnl_mutex){....}-{3:3}, at: rtnl_dellink+0x223/0x730 net/core/rtnetlink.c:3556 #1: ffffffff85002cd0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff85002cd0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff85002cd0 (rcu_read_lock){....}-{1:2}, at: packet_notifier+0x33/0x450 net/packet/af_packet.c:4240 CPU: 0 UID: 0 PID: 5530 Comm: syz.2.16 Not tainted 6.15.0-rc6-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x11f/0x1b0 lib/dump_stack.c:120 __might_resched+0x1bc/0x1e0 kernel/sched/core.c:8818 __mutex_lock_common kernel/locking/mutex.c:578 [inline] __mutex_lock+0x7c/0xba0 kernel/locking/mutex.c:746 team_change_rx_flags+0x2a/0x120 drivers/net/team/team_core.c:1781 dev_change_rx_flags net/core/dev.c:9145 [inline] __dev_set_promiscuity+0x216/0x250 net/core/dev.c:9189 netif_set_promiscuity+0x2a/0x80 net/core/dev.c:9201 dev_set_promiscuity+0x82/0x100 net/core/dev_api.c:286 packet_dev_mc net/packet/af_packet.c:3698 [inline] packet_dev_mclist_delete net/packet/af_packet.c:3722 [inline] packet_notifier+0x123/0x450 net/packet/af_packet.c:4247 notifier_call_chain+0xcb/0x200 kernel/notifier.c:85 call_netdevice_notifiers_info net/core/dev.c:2176 [inline] call_netdevice_notifiers_extack net/core/dev.c:2214 [inline] call_netdevice_notifiers net/core/dev.c:2228 [inline] unregister_netdevice_many_notify+0x9cb/0xf70 net/core/dev.c:11972 rtnl_delete_link net/core/rtnetlink.c:3522 [inline] rtnl_dellink+0x41a/0x730 net/core/rtnetlink.c:3564 rtnetlink_rcv_msg+0x508/0x610 net/core/rtnetlink.c:6955 netlink_rcv_skb+0xea/0x1c0 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x3ba/0x480 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x494/0x590 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0xc9/0xf0 net/socket.c:727 ____sys_sendmsg+0x257/0x360 net/socket.c:2566 ___sys_sendmsg+0x2de/0x320 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] __x64_sys_sendmsg+0x110/0x1a0 net/socket.c:2655 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8f/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd994f8e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd995dcc038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd9951b5fa0 RCX: 00007fd994f8e969 RDX: 0000000000000000 RSI: 00002000000001c0 RDI: 0000000000000004 RBP: 00007fd995010ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd9951b5fa0 R15: 00007ffcb0d1d298