team_slave_0: entered promiscuous mode team_slave_1: entered promiscuous mode dummy0: entered promiscuous mode 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: 16219, name: syz.4.4799 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 2 locks held by syz.4.4799/16219: #0: ffffffff900fe988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff900fe988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff900fe988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_setlink+0x6d4/0xc00 net/core/rtnetlink.c:3456 #1: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x29/0x330 drivers/net/team/team_core.c:1781 CPU: 1 UID: 0 PID: 16219 Comm: syz.4.4799 Not tainted 6.15.0-rc2-syzkaller-00682-gcd7276ecac9c #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 __might_resched+0x558/0x6c0 kernel/sched/core.c:8818 __mutex_lock_common kernel/locking/mutex.c:578 [inline] __mutex_lock+0x12c/0x10c0 kernel/locking/mutex.c:746 netdev_lock include/linux/netdevice.h:2750 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] dev_set_allmulti+0x11c/0x270 net/core/dev_api.c:288 team_change_rx_flags+0x1a8/0x330 drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9200 [inline] netif_set_allmulti+0x20e/0x380 net/core/dev.c:9302 __dev_change_flags+0x57b/0x700 net/core/dev.c:9443 netif_change_flags+0x8b/0x1a0 net/core/dev.c:9484 do_setlink+0xee3/0x4390 net/core/rtnetlink.c:3152 rtnl_setlink+0x855/0xc00 net/core/rtnetlink.c:3466 rtnetlink_rcv_msg+0x80f/0xd70 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 ____sys_sendmsg+0x523/0x860 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x271/0x360 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9dceb8e969 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:00007f9dcf9ce038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9dcedb5fa0 RCX: 00007f9dceb8e969 RDX: 0000000000004014 RSI: 0000200000000340 RDI: 0000000000000003 RBP: 00007f9dcec10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9dcedb5fa0 R15: 00007ffeaad452f8 ============================= [ BUG: Invalid wait context ] 6.15.0-rc2-syzkaller-00682-gcd7276ecac9c #0 Tainted: G W ----------------------------- syz.4.4799/16219 is trying to lock: ffff88805781ed30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2750 [inline] ffff88805781ed30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff88805781ed30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: dev_set_allmulti+0x11c/0x270 net/core/dev_api.c:288 other info that might help us debug this: context-{5:5} 2 locks held by syz.4.4799/16219: #0: ffffffff900fe988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff900fe988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff900fe988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_setlink+0x6d4/0xc00 net/core/rtnetlink.c:3456 #1: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff8ed3df20 (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: 16219 Comm: syz.4.4799 Tainted: G W 6.15.0-rc2-syzkaller-00682-gcd7276ecac9c #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 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+0xc30/0xd80 kernel/locking/lockdep.c:5185 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x1a5/0x10c0 kernel/locking/mutex.c:746 netdev_lock include/linux/netdevice.h:2750 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] dev_set_allmulti+0x11c/0x270 net/core/dev_api.c:288 team_change_rx_flags+0x1a8/0x330 drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9200 [inline] netif_set_allmulti+0x20e/0x380 net/core/dev.c:9302 __dev_change_flags+0x57b/0x700 net/core/dev.c:9443 netif_change_flags+0x8b/0x1a0 net/core/dev.c:9484 do_setlink+0xee3/0x4390 net/core/rtnetlink.c:3152 rtnl_setlink+0x855/0xc00 net/core/rtnetlink.c:3466 rtnetlink_rcv_msg+0x80f/0xd70 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 ____sys_sendmsg+0x523/0x860 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x271/0x360 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9dceb8e969 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:00007f9dcf9ce038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9dcedb5fa0 RCX: 00007f9dceb8e969 RDX: 0000000000004014 RSI: 0000200000000340 RDI: 0000000000000003 RBP: 00007f9dcec10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9dcedb5fa0 R15: 00007ffeaad452f8 dummy0: entered allmulticast mode 8021q: adding VLAN 0 to HW filter on device team0 bridge0: port 3(team0) entered blocking state bridge0: port 3(team0) entered disabled state bridge0: port 3(team0) entered blocking state bridge0: port 3(team0) entered forwarding state