Hello, syzbot found the following issue on: HEAD commit: f66ebf37d69c Merge git://git.kernel.org/pub/scm/linux/kern.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=15362b9f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=f95955e3f7b5790c dashboard link: https://syzkaller.appspot.com/bug?extid=eb75299195741149e159 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/50ac18fa9817/disk-f66ebf37.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b6a34414ad4b/vmlinux-f66ebf37.xz kernel image: https://storage.googleapis.com/syzbot-assets/b734c77ee7f0/bzImage-f66ebf37.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+eb75299195741149e159@xxxxxxxxxxxxxxxxxxxxxxxxx ====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc1-syzkaller-00131-gf66ebf37d69c #0 Not tainted ------------------------------------------------------ syz.2.718/8035 is trying to acquire lock: ffff888055530768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline] ffff888055530768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_change_mac+0xcc/0x11e0 net/mac80211/iface.c:309 but task is already holding lock: ffff88807b14cd40 (team->team_lock_key#8){+.+.}-{3:3}, at: team_del_slave+0x32/0x1d0 drivers/net/team/team_core.c:1990 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (team->team_lock_key#8){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 team_port_change_check+0x51/0x1e0 drivers/net/team/team_core.c:2950 team_device_event+0x161/0x5b0 drivers/net/team/team_core.c:2976 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers net/core/dev.c:2048 [inline] dev_close_many+0x33c/0x4c0 net/core/dev.c:1589 unregister_netdevice_many_notify+0x530/0x1da0 net/core/dev.c:11377 macvlan_device_event+0x7e0/0x870 drivers/net/macvlan.c:1830 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers net/core/dev.c:2048 [inline] unregister_netdevice_many_notify+0xedd/0x1da0 net/core/dev.c:11403 unregister_netdevice_many net/core/dev.c:11465 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11339 unregister_netdevice include/linux/netdevice.h:3118 [inline] _cfg80211_unregister_wdev+0x162/0x560 net/wireless/core.c:1211 ieee80211_if_remove+0x25d/0x3a0 net/mac80211/iface.c:2240 ieee80211_del_iface+0x19/0x30 net/mac80211/cfg.c:202 rdev_del_virtual_intf net/wireless/rdev-ops.h:62 [inline] cfg80211_remove_virtual_intf+0x23f/0x410 net/wireless/util.c:2875 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&rdev->wiphy.mtx){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 wiphy_lock include/net/cfg80211.h:6014 [inline] ieee80211_change_mac+0xcc/0x11e0 net/mac80211/iface.c:309 dev_set_mac_address+0x327/0x510 net/core/dev.c:9099 bond_set_mac_address+0x28e/0x7f0 drivers/net/bonding/bond_main.c:4880 dev_set_mac_address+0x327/0x510 net/core/dev.c:9099 __set_port_dev_addr drivers/net/team/team_core.c:57 [inline] team_port_set_orig_dev_addr drivers/net/team/team_core.c:62 [inline] team_port_del+0xb08/0xcc0 drivers/net/team/team_core.c:1367 team_del_slave+0x3d/0x1d0 drivers/net/team/team_core.c:1991 do_set_master net/core/rtnetlink.c:2687 [inline] do_setlink+0xeff/0x41f0 net/core/rtnetlink.c:2907 rtnl_group_changelink net/core/rtnetlink.c:3447 [inline] __rtnl_newlink net/core/rtnetlink.c:3706 [inline] rtnl_newlink+0x1119/0x20a0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6646 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(team->team_lock_key#8); lock(&rdev->wiphy.mtx); lock(team->team_lock_key#8); lock(&rdev->wiphy.mtx); *** DEADLOCK *** 2 locks held by syz.2.718/8035: #0: ffffffff8fcd1748 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fcd1748 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643 #1: ffff88807b14cd40 (team->team_lock_key#8){+.+.}-{3:3}, at: team_del_slave+0x32/0x1d0 drivers/net/team/team_core.c:1990 stack backtrace: CPU: 0 UID: 0 PID: 8035 Comm: syz.2.718 Not tainted 6.12.0-rc1-syzkaller-00131-gf66ebf37d69c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 wiphy_lock include/net/cfg80211.h:6014 [inline] ieee80211_change_mac+0xcc/0x11e0 net/mac80211/iface.c:309 dev_set_mac_address+0x327/0x510 net/core/dev.c:9099 bond_set_mac_address+0x28e/0x7f0 drivers/net/bonding/bond_main.c:4880 dev_set_mac_address+0x327/0x510 net/core/dev.c:9099 __set_port_dev_addr drivers/net/team/team_core.c:57 [inline] team_port_set_orig_dev_addr drivers/net/team/team_core.c:62 [inline] team_port_del+0xb08/0xcc0 drivers/net/team/team_core.c:1367 team_del_slave+0x3d/0x1d0 drivers/net/team/team_core.c:1991 do_set_master net/core/rtnetlink.c:2687 [inline] do_setlink+0xeff/0x41f0 net/core/rtnetlink.c:2907 rtnl_group_changelink net/core/rtnetlink.c:3447 [inline] __rtnl_newlink net/core/rtnetlink.c:3706 [inline] rtnl_newlink+0x1119/0x20a0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6646 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f9977dff9 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:00007f2f9a4b4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2f99936058 RCX: 00007f2f9977dff9 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007f2f997f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2f99936058 R15: 00007ffe9593e008 </TASK> team0: Port device bond0 removed bond0: (slave wlan1): Releasing backup interface --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
