Hello, syzbot found the following issue on: HEAD commit: 05b92660cdfe Merge tag 'pci-v6.12-fixes-2' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16ceb55f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=728f7ffd25400452 dashboard link: https://syzkaller.appspot.com/bug?extid=ec6009b644ee5b5c28c8 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-05b92660.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/240ba8a2a878/vmlinux-05b92660.xz kernel image: https://storage.googleapis.com/syzbot-assets/fed8acdd322e/bzImage-05b92660.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ec6009b644ee5b5c28c8@xxxxxxxxxxxxxxxxxxxxxxxxx ====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0 Not tainted ------------------------------------------------------ kworker/u32:4/77 is trying to acquire lock: but task is already holding lock: which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&rdev->wiphy.mtx){+.+.}-{3:3}: wiphy_lock include/net/cfg80211.h:6014 [inline] ieee80211_open+0x12f/0x260 net/mac80211/iface.c:449 do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2730 __rtnl_newlink+0xc35/0x1920 net/core/rtnetlink.c:3725 rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6675 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2551 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (team->team_lock_key#4){+.+.}-{3:3}: notifier_call_chain+0xb9/0x410 kernel/notifier.c:93 unregister_netdevice include/linux/netdevice.h:3118 [inline] _cfg80211_unregister_wdev+0x64b/0x830 net/wireless/core.c:1211 ieee80211_remove_interfaces+0x36d/0x760 net/mac80211/iface.c:2300 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 kthread+0x2c1/0x3a0 kernel/kthread.c:389 other info that might help us debug this: CPU0 CPU1 lock(&rdev->wiphy.mtx); lock(&rdev->wiphy.mtx); *** DEADLOCK *** #3: ffffffff8fee34a8 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_unregister_hw+0x4d/0x3a0 net/mac80211/main.c:1664 stack backtrace: CPU: 2 UID: 0 PID: 77 Comm: kworker/u32:4 Not tainted 6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0 Call Trace: <TASK> print_circular_bug+0x41c/0x610 kernel/locking/lockdep.c:2074 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 team_del_slave+0x31/0x1b0 drivers/net/team/team_core.c:1990 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers net/core/dev.c:2048 [inline] unregister_netdevice_many_notify+0x8d5/0x1e50 net/core/dev.c:11407 ieee80211_unregister_hw+0x55/0x3a0 net/mac80211/main.c:1671 cleanup_net+0x5b7/0xb40 net/core/net_namespace.c:626 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 --- 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
