bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff888045ae54f8 object type: timer_list hint: batadv_dat_purge+0x0/0x70 net/batman-adv/distributed-arp-table.c:171 WARNING: CPU: 0 PID: 15438 at lib/debugobjects.c:505 debug_print_object+0x194/0x2c0 lib/debugobjects.c:505 Modules linked in: CPU: 0 PID: 15438 Comm: kworker/u4:0 Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Workqueue: netns cleanup_net RIP: 0010:debug_print_object+0x194/0x2c0 lib/debugobjects.c:505 Code: df 48 89 fe 48 c1 ee 03 80 3c 16 00 0f 85 c7 00 00 00 48 8b 14 dd 00 02 a7 8a 50 4c 89 ee 48 c7 c7 60 f5 a6 8a e8 4c c3 34 fd <0f> 0b 58 83 05 66 90 63 0a 01 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e RSP: 0018:ffffc90004f8f8b0 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff8880777ee1c0 RSI: ffffffff814b2417 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8a4ec3a0 R13: ffffffff8aa6fbc0 R14: ffff888020ab0360 R15: ffffffff8171df50 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020414030 CR3: 000000004220f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:1023 [inline] debug_check_no_obj_freed+0x305/0x420 lib/debugobjects.c:1054 __do_kmem_cache_free mm/slab.c:3575 [inline] __kmem_cache_free+0x194/0x2c0 mm/slab.c:3583 kvfree+0x46/0x50 mm/util.c:650 device_release+0xa3/0x240 drivers/base/core.c:2484 kobject_cleanup lib/kobject.c:683 [inline] kobject_release lib/kobject.c:714 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c2/0x4d0 lib/kobject.c:731 netdev_run_todo+0x762/0x1100 net/core/dev.c:10400 default_device_exit_batch+0x456/0x5b0 net/core/dev.c:11392 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:614 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308