Hello, syzbot found the following issue on: HEAD commit: 42f7652d3eb5 Linux 6.12-rc4 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c3e430580000 kernel config: https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043 dashboard link: https://syzkaller.appspot.com/bug?extid=66941b4fb1cdd6585c62 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/ed847da7e5cc/disk-42f7652d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/66c7a2b66b5b/vmlinux-42f7652d.xz kernel image: https://storage.googleapis.com/syzbot-assets/9878229c04ae/bzImage-42f7652d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+66941b4fb1cdd6585c62@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ ODEBUG: activate active (active state 1) object: ffff888061cc0600 object type: rcu_head hint: 0x0 WARNING: CPU: 0 PID: 4423 at lib/debugobjects.c:517 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514 Modules linked in: CPU: 0 UID: 0 PID: 4423 Comm: kworker/u8:7 Not tainted 6.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: netns cleanup_net RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514 Code: e8 9b 5e 3b fd 4c 8b 0b 48 c7 c7 a0 0b 61 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 1b 93 92 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 a4 e2 59 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc9000cd37578 EFLAGS: 00010286 RAX: 29d90125cddd4800 RBX: ffffffff8c0be6e0 RCX: ffff888032333c00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8c610d20 R08: ffffffff8155e402 R09: fffffbfff1cf9fe0 R10: dffffc0000000000 R11: fffffbfff1cf9fe0 R12: 0000000000000001 R13: ffffffff8c610c38 R14: dffffc0000000000 R15: ffff888061cc0600 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555c3b808 CR3: 00000000652c6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> debug_object_activate+0x357/0x510 lib/debugobjects.c:732 debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline] kvfree_call_rcu+0x99/0x790 kernel/rcu/tree.c:3801 _cfg80211_unregister_wdev+0x347/0x560 net/wireless/core.c:1238 ieee80211_remove_interfaces+0x4db/0x700 net/mac80211/iface.c:2300 ieee80211_unregister_hw+0x5d/0x2c0 net/mac80211/main.c:1669 mac80211_hwsim_del_radio+0x2c4/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5625 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6505 ops_exit_list net/core/net_namespace.c:173 [inline] cleanup_net+0x802/0xcc0 net/core/net_namespace.c:626 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> --- 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
