netlink: 14 bytes leftover after parsing attributes in process `syz.0.1979'.
bridge0: port 4(bond0) entered disabled state
bond0 (unregistering): left allmulticast mode
bond_slave_1: left allmulticast mode
team0: left allmulticast mode
team_slave_0: left allmulticast mode
macvlan0: left allmulticast mode
veth1_vlan: left 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: 14097, name: syz.0.1979
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
2 locks held by syz.0.1979/14097:
 #0: ffffffff8f2f4248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #0: ffffffff8f2f4248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 #0: ffffffff8f2f4248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x331/0x710 net/core/rtnetlink.c:3556
 #1: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #1: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #1: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x29/0x330 drivers/net/team/team_core.c:1781
CPU: 1 UID: 0 PID: 14097 Comm: syz.0.1979 Not tainted 6.15.0-rc4-syzkaller-g25b6d5def6f8 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 __might_resched+0x495/0x610 kernel/sched/core.c:8818
 __mutex_lock_common kernel/locking/mutex.c:578 [inline]
 __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:746
 netdev_lock include/linux/netdevice.h:2751 [inline]
 netdev_lock_ops include/net/netdev_lock.h:42 [inline]
 dev_set_allmulti+0x10e/0x260 net/core/dev_api.c:288
 team_change_rx_flags+0x20f/0x330 drivers/net/team/team_core.c:1789
 dev_change_rx_flags net/core/dev.c:9145 [inline]
 netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247
 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289
 bond_set_allmulti drivers/net/bonding/bond_main.c:945 [inline]
 bond_change_rx_flags+0x4cd/0x690 drivers/net/bonding/bond_main.c:4736
 dev_change_rx_flags net/core/dev.c:9145 [inline]
 netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247
 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289
 nbp_delete_promisc net/bridge/br_if.c:252 [inline]
 del_nbp+0xae/0xa60 net/bridge/br_if.c:340
 br_del_if+0x146/0x320 net/bridge/br_if.c:739
 br_device_event+0x53e/0x910 net/bridge/br.c:122
 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
 call_netdevice_notifiers net/core/dev.c:2228 [inline]
 unregister_netdevice_many_notify+0x15d4/0x2330 net/core/dev.c:11982
 rtnl_delete_link net/core/rtnetlink.c:3522 [inline]
 rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3564
 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x219/0x270 net/socket.c:727
 ____sys_sendmsg+0x505/0x830 net/socket.c:2566
 ___sys_sendmsg+0x21f/0x2a0 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+0x19b/0x260 net/socket.c:2655
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcaa1b8e969
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:00007fcaa29bd038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fcaa1db6080 RCX: 00007fcaa1b8e969
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007fcaa1c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcaa1db6080 R15: 00007fff71773d78
 </TASK>

=============================
[ BUG: Invalid wait context ]
6.15.0-rc4-syzkaller-g25b6d5def6f8 #0 Tainted: G        W          
-----------------------------
syz.0.1979/14097 is trying to lock:
ffff888061134d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline]
ffff888061134d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline]
ffff888061134d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: dev_set_allmulti+0x10e/0x260 net/core/dev_api.c:288
other info that might help us debug this:
context-{5:5}
2 locks held by syz.0.1979/14097:
 #0: ffffffff8f2f4248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #0: ffffffff8f2f4248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 #0: ffffffff8f2f4248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x331/0x710 net/core/rtnetlink.c:3556
 #1: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #1: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #1: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x29/0x330 drivers/net/team/team_core.c:1781
stack backtrace:
CPU: 1 UID: 0 PID: 14097 Comm: syz.0.1979 Tainted: G        W           6.15.0-rc4-syzkaller-g25b6d5def6f8 #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4831 [inline]
 check_wait_context kernel/locking/lockdep.c:4903 [inline]
 __lock_acquire+0xbcf/0xd20 kernel/locking/lockdep.c:5185
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866
 __mutex_lock_common kernel/locking/mutex.c:601 [inline]
 __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:746
 netdev_lock include/linux/netdevice.h:2751 [inline]
 netdev_lock_ops include/net/netdev_lock.h:42 [inline]
 dev_set_allmulti+0x10e/0x260 net/core/dev_api.c:288
 team_change_rx_flags+0x20f/0x330 drivers/net/team/team_core.c:1789
 dev_change_rx_flags net/core/dev.c:9145 [inline]
 netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247
 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289
 bond_set_allmulti drivers/net/bonding/bond_main.c:945 [inline]
 bond_change_rx_flags+0x4cd/0x690 drivers/net/bonding/bond_main.c:4736
 dev_change_rx_flags net/core/dev.c:9145 [inline]
 netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247
 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289
 nbp_delete_promisc net/bridge/br_if.c:252 [inline]
 del_nbp+0xae/0xa60 net/bridge/br_if.c:340
 br_del_if+0x146/0x320 net/bridge/br_if.c:739
 br_device_event+0x53e/0x910 net/bridge/br.c:122
 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
 call_netdevice_notifiers net/core/dev.c:2228 [inline]
 unregister_netdevice_many_notify+0x15d4/0x2330 net/core/dev.c:11982
 rtnl_delete_link net/core/rtnetlink.c:3522 [inline]
 rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3564
 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x219/0x270 net/socket.c:727
 ____sys_sendmsg+0x505/0x830 net/socket.c:2566
 ___sys_sendmsg+0x21f/0x2a0 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+0x19b/0x260 net/socket.c:2655
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcaa1b8e969
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:00007fcaa29bd038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fcaa1db6080 RCX: 00007fcaa1b8e969
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007fcaa1c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcaa1db6080 R15: 00007fff71773d78
 </TASK>
bond0 (unregistering): left promiscuous mode
bond_slave_1: left promiscuous mode
team0: left promiscuous mode
team_slave_0: left promiscuous mode
macvlan0: left promiscuous mode
bridge0: port 4(bond0) entered disabled state
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): (slave team0): Releasing backup interface
bond0 (unregistering): Released all slaves