syzbot

bridge0: entered promiscuous mode
vlan2: entered promiscuous mode
bond0: entered promiscuous mode
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:579
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 27829, name: syz.1.5585
preempt_count: 201, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by syz.1.5585/27829:
 #0: ffffffff8ec81120 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8ec81120 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #0: ffffffff8ec81120 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570
 #1: ffffffff8f50f648 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #1: ffffffff8f50f648 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
 #1: ffffffff8f50f648 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054
 #2: ffff888024864368 (&dev_addr_list_lock_key#6/3){+...}-{3:3}, at: netif_addr_lock_bh include/linux/netdevice.h:4805 [inline]
 #2: ffff888024864368 (&dev_addr_list_lock_key#6/3){+...}-{3:3}, at: dev_uc_add+0x67/0x120 net/core/dev_addr_lists.c:689
Preemption disabled at:
[<ffffffff89512d76>] local_bh_disable include/linux/bottom_half.h:20 [inline]
[<ffffffff89512d76>] netif_addr_lock_bh include/linux/netdevice.h:4804 [inline]
[<ffffffff89512d76>] dev_uc_add+0x56/0x120 net/core/dev_addr_lists.c:689
CPU: 0 UID: 0 PID: 27829 Comm: syz.1.5585 Not tainted 6.15.0-syzkaller-12293-g7fdaba912981 #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:8800
 __mutex_lock_common kernel/locking/mutex.c:579 [inline]
 __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:747
 netdev_lock include/linux/netdevice.h:2756 [inline]
 netdev_lock_ops include/net/netdev_lock.h:42 [inline]
 dev_set_promiscuity+0x10e/0x260 net/core/dev_api.c:286
 bond_set_promiscuity drivers/net/bonding/bond_main.c:919 [inline]
 bond_change_rx_flags+0x219/0x690 drivers/net/bonding/bond_main.c:4738
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9305
 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:287
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9305
 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:287
 br_port_set_promisc net/bridge/br_if.c:108 [inline]
 br_manage_promisc+0x180/0x560 net/bridge/br_if.c:157
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 __dev_set_rx_mode+0x17c/0x260 net/core/dev.c:-1
 dev_uc_add+0xc8/0x120 net/core/dev_addr_lists.c:693
 macvlan_open+0x446/0x8e0 drivers/net/macvlan.c:647
 __dev_open+0x46d/0x880 net/core/dev.c:1683
 __dev_change_flags+0x1ea/0x6d0 net/core/dev.c:9458
 rtnl_configure_link net/core/rtnetlink.c:3577 [inline]
 rtnl_newlink_create+0x555/0xb00 net/core/rtnetlink.c:3833
 __rtnl_newlink net/core/rtnetlink.c:3940 [inline]
 rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x75b/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+0x21c/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+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c5758e929
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:00007f9c5845c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9c577b5fa0 RCX: 00007f9c5758e929
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007f9c57610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9c577b5fa0 R15: 00007f9c578dfa28
 </TASK>

=============================
[ BUG: Invalid wait context ]
6.15.0-syzkaller-12293-g7fdaba912981 #0 Tainted: G        W          
-----------------------------
syz.1.5585/27829 is trying to lock:
ffff888069408d30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2756 [inline]
ffff888069408d30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline]
ffff888069408d30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: dev_set_promiscuity+0x10e/0x260 net/core/dev_api.c:286
other info that might help us debug this:
context-{5:5}
3 locks held by syz.1.5585/27829:
 #0: ffffffff8ec81120 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8ec81120 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #0: ffffffff8ec81120 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570
 #1: ffffffff8f50f648 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
 #1: ffffffff8f50f648 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
 #1: ffffffff8f50f648 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054
 #2: ffff888024864368 (&dev_addr_list_lock_key#6/3){+...}-{3:3}, at: netif_addr_lock_bh include/linux/netdevice.h:4805 [inline]
 #2: ffff888024864368 (&dev_addr_list_lock_key#6/3){+...}-{3:3}, at: dev_uc_add+0x67/0x120 net/core/dev_addr_lists.c:689
stack backtrace:
CPU: 0 UID: 0 PID: 27829 Comm: syz.1.5585 Tainted: G        W           6.15.0-syzkaller-12293-g7fdaba912981 #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:4833 [inline]
 check_wait_context kernel/locking/lockdep.c:4905 [inline]
 __lock_acquire+0xbcb/0xd20 kernel/locking/lockdep.c:5190
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
 __mutex_lock_common kernel/locking/mutex.c:602 [inline]
 __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:747
 netdev_lock include/linux/netdevice.h:2756 [inline]
 netdev_lock_ops include/net/netdev_lock.h:42 [inline]
 dev_set_promiscuity+0x10e/0x260 net/core/dev_api.c:286
 bond_set_promiscuity drivers/net/bonding/bond_main.c:919 [inline]
 bond_change_rx_flags+0x219/0x690 drivers/net/bonding/bond_main.c:4738
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9305
 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:287
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9305
 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:287
 br_port_set_promisc net/bridge/br_if.c:108 [inline]
 br_manage_promisc+0x180/0x560 net/bridge/br_if.c:157
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 __dev_set_rx_mode+0x17c/0x260 net/core/dev.c:-1
 dev_uc_add+0xc8/0x120 net/core/dev_addr_lists.c:693
 macvlan_open+0x446/0x8e0 drivers/net/macvlan.c:647
 __dev_open+0x46d/0x880 net/core/dev.c:1683
 __dev_change_flags+0x1ea/0x6d0 net/core/dev.c:9458
 rtnl_configure_link net/core/rtnetlink.c:3577 [inline]
 rtnl_newlink_create+0x555/0xb00 net/core/rtnetlink.c:3833
 __rtnl_newlink net/core/rtnetlink.c:3940 [inline]
 rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x75b/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+0x21c/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+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c5758e929
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:00007f9c5845c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9c577b5fa0 RCX: 00007f9c5758e929
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007f9c57610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9c577b5fa0 R15: 00007f9c578dfa28
 </TASK>
macvlan2: entered promiscuous mode
bridge0: port 2(macvlan2) entered blocking state
bridge0: port 2(macvlan2) entered disabled state
macvlan2: entered allmulticast mode
bridge0: entered allmulticast mode
macvlan2: left allmulticast mode
bridge0: left allmulticast mode
bridge0: left promiscuous mode
vlan2: left promiscuous mode
bond0: left promiscuous mode
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:579
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 27829, name: syz.1.5585
preempt_count: 201, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffffffff89512ea6>] local_bh_disable include/linux/bottom_half.h:20 [inline]
[<ffffffff89512ea6>] netif_addr_lock_bh include/linux/netdevice.h:4804 [inline]
[<ffffffff89512ea6>] dev_uc_del+0x56/0x110 net/core/dev_addr_lists.c:711
CPU: 0 UID: 0 PID: 27829 Comm: syz.1.5585 Tainted: G        W           6.15.0-syzkaller-12293-g7fdaba912981 #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
 __might_resched+0x495/0x610 kernel/sched/core.c:8800
 __mutex_lock_common kernel/locking/mutex.c:579 [inline]
 __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:747
 netdev_lock include/linux/netdevice.h:2756 [inline]
 netdev_lock_ops include/net/netdev_lock.h:42 [inline]
 dev_set_promiscuity+0x10e/0x260 net/core/dev_api.c:286
 bond_set_promiscuity drivers/net/bonding/bond_main.c:919 [inline]
 bond_change_rx_flags+0x219/0x690 drivers/net/bonding/bond_main.c:4738
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9305
 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:287
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9305
 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:287
 br_port_clear_promisc net/bridge/br_if.c:135 [inline]
 br_manage_promisc+0x4db/0x560 net/bridge/br_if.c:172
 dev_change_rx_flags net/core/dev.c:9241 [inline]
 __dev_set_promiscuity+0x531/0x740 net/core/dev.c:9285
 __dev_set_rx_mode+0x17c/0x260 net/core/dev.c:-1
 dev_uc_del+0xc0/0x110 net/core/dev_addr_lists.c:715
 macvlan_stop+0x259/0x3e0 drivers/net/macvlan.c:709
 __dev_close_many+0x364/0x6f0 net/core/dev.c:1756
 dev_close_many+0x225/0x410 net/core/dev.c:1781
 unregister_netdevice_many_notify+0x834/0x2320 net/core/dev.c:12046
 rtnl_newlink_create+0x802/0xb00 net/core/rtnetlink.c:3851
 __rtnl_newlink net/core/rtnetlink.c:3940 [inline]
 rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x75b/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+0x21c/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+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c5758e929
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:00007f9c5845c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9c577b5fa0 RCX: 00007f9c5758e929
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007f9c57610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9c577b5fa0 R15: 00007f9c578dfa28
 </TASK>