syzbot

bridge0: port 3(team0) entered blocking state
bridge0: port 3(team0) entered disabled state
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: 12824, name: syz.3.1788
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
2 locks held by syz.3.1788/12824:
 #0: ffffffff9012a5e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #0: ffffffff9012a5e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
 #0: ffffffff9012a5e8 (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: 0 UID: 0 PID: 12824 Comm: syz.3.1788 Not tainted 6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 __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_set_allmulti+0xb7/0x260 net/core/dev_api.c:312
 br_add_if+0x6ad/0x1b70 net/bridge/br_if.c:605
 do_set_master+0x40f/0x730 net/core/rtnetlink.c:2946
 do_setlink.constprop.0+0xe66/0x44b0 net/core/rtnetlink.c:3159
 rtnl_changelink net/core/rtnetlink.c:3769 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3928 [inline]
 rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x16d/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+0xa98/0xc70 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: 0033:0x7f217b78e969
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:00007f217c65c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f217b9b5fa0 RCX: 00007f217b78e969
RDX: 0000000000000000 RSI: 00002000000001c0 RDI: 0000000000000003
RBP: 00007f217b810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f217b9b5fa0 R15: 00007fff98030048
 </TASK>

=============================
[ BUG: Invalid wait context ]
6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #0 Tainted: G        W          
-----------------------------
syz.3.1788/12824 is trying to lock:
ffff88805dc26d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline]
ffff88805dc26d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline]
ffff88805dc26d30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:39 [inline]
ffff88805dc26d30 (&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.3.1788/12824:
 #0: ffffffff9012a5e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #0: ffffffff9012a5e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
 #0: ffffffff9012a5e8 (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: 12824 Comm: syz.3.1788 Tainted: G        W           6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #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 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_set_allmulti+0xb7/0x260 net/core/dev_api.c:312
 br_add_if+0x6ad/0x1b70 net/bridge/br_if.c:605
 do_set_master+0x40f/0x730 net/core/rtnetlink.c:2946
 do_setlink.constprop.0+0xe66/0x44b0 net/core/rtnetlink.c:3159
 rtnl_changelink net/core/rtnetlink.c:3769 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3928 [inline]
 rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x16d/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+0xa98/0xc70 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: 0033:0x7f217b78e969
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:00007f217c65c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f217b9b5fa0 RCX: 00007f217b78e969
RDX: 0000000000000000 RSI: 00002000000001c0 RDI: 0000000000000003
RBP: 00007f217b810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f217b9b5fa0 R15: 00007fff98030048
 </TASK>
dummy0: entered allmulticast mode
team0: entered promiscuous mode
team_slave_0: entered promiscuous mode
team_slave_1: entered 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: 12824, name: syz.3.1788
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 UID: 0 PID: 12824 Comm: syz.3.1788 Tainted: G        W           6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #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 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_promiscuity+0xa2/0x260 net/core/dev_api.c:285
 team_change_rx_flags+0x146/0x390 drivers/net/team/team_core.c:1785
 dev_change_rx_flags net/core/dev.c:9145 [inline]
 __dev_set_promiscuity+0x217/0x590 net/core/dev.c:9189
 netif_set_promiscuity+0x52/0x150 net/core/dev.c:9201
 dev_set_promiscuity+0xb2/0x260 net/core/dev_api.c:286
 br_port_set_promisc net/bridge/br_if.c:108 [inline]
 br_manage_promisc+0x2ce/0x4f0 net/bridge/br_if.c:157
 nbp_update_port_count net/bridge/br_if.c:242 [inline]
 br_add_if+0xc93/0x1b70 net/bridge/br_if.c:640
 do_set_master+0x40f/0x730 net/core/rtnetlink.c:2946
 do_setlink.constprop.0+0xe66/0x44b0 net/core/rtnetlink.c:3159
 rtnl_changelink net/core/rtnetlink.c:3769 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3928 [inline]
 rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6955
 netlink_rcv_skb+0x16d/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+0xa98/0xc70 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: 0033:0x7f217b78e969
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:00007f217c65c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f217b9b5fa0 RCX: 00007f217b78e969
RDX: 0000000000000000 RSI: 00002000000001c0 RDI: 0000000000000003
RBP: 00007f217b810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f217b9b5fa0 R15: 00007fff98030048
 </TASK>
dummy0: entered promiscuous mode
bridge0: port 3(team0) entered blocking state
bridge0: port 3(team0) entered forwarding state