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: 17982, name: syz.2.4482 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 2 locks held by syz.2.4482/17982: #0: ffffffff901289e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff901289e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff901289e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x600/0x2000 net/core/rtnetlink.c:4064 #1: ffffffff8e3bfc00 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8e3bfc00 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff8e3bfc00 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x33/0x390 drivers/net/team/team_core.c:1781 CPU: 1 UID: 0 PID: 17982 Comm: syz.2.4482 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:8818 __mutex_lock_common kernel/locking/mutex.c:578 [inline] __mutex_lock+0x106/0xb90 kernel/locking/mutex.c:746 netdev_lock include/linux/netdevice.h:2751 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] netdev_lock_ops include/net/netdev_lock.h:39 [inline] dev_set_allmulti+0xa2/0x260 net/core/dev_api.c:311 team_change_rx_flags+0x1bc/0x390 drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9145 [inline] netif_set_allmulti+0x206/0x3d0 net/core/dev.c:9235 __dev_change_flags+0x3d0/0x720 net/core/dev.c:9376 netif_change_flags+0x8d/0x160 net/core/dev.c:9417 do_setlink.constprop.0+0xddf/0x44b0 net/core/rtnetlink.c:3152 rtnl_group_changelink net/core/rtnetlink.c:3783 [inline] __rtnl_newlink net/core/rtnetlink.c:3937 [inline] rtnl_newlink+0x18e0/0x2000 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x95b/0xe90 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x16a/0x440 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53d/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbde218e969 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:00007fbde30dc038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fbde23b5fa0 RCX: 00007fbde218e969 RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000003 RBP: 00007fbde2210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbde23b5fa0 R15: 00007ffc96290f78 ============================= [ BUG: Invalid wait context ] 6.15.0-rc7-syzkaller #0 Tainted: G W ----------------------------- syz.2.4482/17982 is trying to lock: ffff88807c2ecd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff88807c2ecd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff88807c2ecd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:39 [inline] ffff88807c2ecd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: dev_set_allmulti+0xa2/0x260 net/core/dev_api.c:311 other info that might help us debug this: context-{5:5} 2 locks held by syz.2.4482/17982: #0: ffffffff901289e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff901289e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff901289e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x600/0x2000 net/core/rtnetlink.c:4064 #1: ffffffff8e3bfc00 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8e3bfc00 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff8e3bfc00 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x33/0x390 drivers/net/team/team_core.c:1781 stack backtrace: CPU: 1 UID: 0 PID: 17982 Comm: syz.2.4482 Tainted: G W 6.15.0-rc7-syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 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+0x3ff/0x1ba0 kernel/locking/lockdep.c:5185 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 netdev_lock include/linux/netdevice.h:2751 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] netdev_lock_ops include/net/netdev_lock.h:39 [inline] dev_set_allmulti+0xa2/0x260 net/core/dev_api.c:311 team_change_rx_flags+0x1bc/0x390 drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9145 [inline] netif_set_allmulti+0x206/0x3d0 net/core/dev.c:9235 __dev_change_flags+0x3d0/0x720 net/core/dev.c:9376 netif_change_flags+0x8d/0x160 net/core/dev.c:9417 do_setlink.constprop.0+0xddf/0x44b0 net/core/rtnetlink.c:3152 rtnl_group_changelink net/core/rtnetlink.c:3783 [inline] __rtnl_newlink net/core/rtnetlink.c:3937 [inline] rtnl_newlink+0x18e0/0x2000 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x95b/0xe90 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x16a/0x440 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53d/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbde218e969 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:00007fbde30dc038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fbde23b5fa0 RCX: 00007fbde218e969 RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000003 RBP: 00007fbde2210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbde23b5fa0 R15: 00007ffc96290f78 dummy0: entered allmulticast mode nlmon0: entered allmulticast mode caif0: entered allmulticast mode batadv0: entered allmulticast mode vxcan0: entered allmulticast mode vxcan1: entered allmulticast mode veth0: entered allmulticast mode veth1: entered allmulticast mode wg0: entered allmulticast mode wg1: entered allmulticast mode veth0_to_bridge: entered allmulticast mode veth1_to_bridge: entered allmulticast mode veth0_to_bond: entered allmulticast mode veth1_to_bond: entered allmulticast mode veth0_to_team: entered allmulticast mode veth1_to_team: entered allmulticast mode veth0_to_batadv: entered allmulticast mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batadv_slave_0: entered allmulticast mode veth1_to_batadv: entered allmulticast mode batman_adv: batadv0: Interface deactivated: batadv_slave_1 batadv_slave_1: entered allmulticast mode xfrm0: entered allmulticast mode veth0_to_hsr: entered allmulticast mode hsr_slave_0: entered allmulticast mode veth1_to_hsr: entered allmulticast mode hsr_slave_1: entered allmulticast mode hsr0: entered allmulticast mode veth1_virt_wifi: entered allmulticast mode veth0_virt_wifi: entered allmulticast mode net veth1_virt_wifi virt_wifi0: entered allmulticast mode veth1_vlan: entered allmulticast mode veth0_vlan: entered allmulticast mode vlan0: entered allmulticast mode vlan1: entered allmulticast mode macvlan0: entered allmulticast mode macvlan1: entered allmulticast mode ipvlan0: entered allmulticast mode ipvlan1: entered allmulticast mode veth1_macvtap: entered allmulticast mode veth0_macvtap: entered allmulticast mode macvtap0: entered allmulticast mode macsec0: entered allmulticast mode netdevsim netdevsim2 netdevsim0: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim2 netdevsim1: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim2 netdevsim2: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim2 netdevsim3: unset [1, 0] type 2 family 0 port 6081 - 0 geneve0: entered allmulticast mode netdevsim netdevsim2 netdevsim0: entered allmulticast mode netdevsim netdevsim2 netdevsim1: entered allmulticast mode netdevsim netdevsim2 netdevsim2: entered allmulticast mode netdevsim netdevsim2 netdevsim3: entered allmulticast mode batman_adv: batadv0: Interface deactivated: wlan0 mac80211_hwsim hwsim2 wlan0: entered allmulticast mode mac80211_hwsim hwsim3 wlan1: entered allmulticast mode ip6erspan0: entered allmulticast mode geneve2: entered allmulticast mode bond1: entered allmulticast mode bridge1: entered allmulticast mode mac80211_hwsim hwsim12 wlan2: entered allmulticast mode bond2: entered allmulticast mode syztnl1: entered allmulticast mode