------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: arch_local_irq_disable arch/arm64/include/asm/irqflags.h:59 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: arch_local_irq_save arch/arm64/include/asm/irqflags.h:112 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:1634 WARNING: CPU: 0 PID: 4437 at lib/debugobjects.c:515 debug_print_object lib/debugobjects.c:512 [inline] WARNING: CPU: 0 PID: 4437 at lib/debugobjects.c:515 __debug_check_no_obj_freed lib/debugobjects.c:999 [inline] WARNING: CPU: 0 PID: 4437 at lib/debugobjects.c:515 debug_check_no_obj_freed+0x3f0/0x50c lib/debugobjects.c:1030 Modules linked in: CPU: 0 PID: 4437 Comm: kworker/u4:9 Not tainted 5.15.105-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: netns cleanup_net pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:512 [inline] pc : __debug_check_no_obj_freed lib/debugobjects.c:999 [inline] pc : debug_check_no_obj_freed+0x3f0/0x50c lib/debugobjects.c:1030 lr : debug_print_object lib/debugobjects.c:512 [inline] lr : __debug_check_no_obj_freed lib/debugobjects.c:999 [inline] lr : debug_check_no_obj_freed+0x3f0/0x50c lib/debugobjects.c:1030 sp : ffff80001d5b7540 x29: ffff80001d5b7580 x28: ffff800011aa2b00 x27: dfff800000000000 x26: ffff0000d07294f8 x25: 0000000000000000 x24: ffff80001858b750 x23: ffff0000d11df3b8 x22: ffff800011f30d98 x21: ffff800011aa2b00 x20: ffff80001858b748 x19: ffff0000d0728000 x18: 0000000000000001 x17: ff808000083336c4 x16: ffff80001193f6fc x15: ffff8000083336c4 x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000000000 x11: ff8080000832b16c x10: 0000000000000000 x9 : 94c63177a63ab200 x8 : 94c63177a63ab200 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001d5b6cb8 x4 : ffff80001499f940 x3 : ffff800008549b3c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000061 Call trace: debug_print_object lib/debugobjects.c:512 [inline] __debug_check_no_obj_freed lib/debugobjects.c:999 [inline] debug_check_no_obj_freed+0x3f0/0x50c lib/debugobjects.c:1030 slab_free_hook mm/slub.c:1680 [inline] slab_free_freelist_hook+0x9c/0x1ec mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0x178/0x410 mm/slub.c:4559 kvfree+0x40/0x50 mm/util.c:654 netdev_freemem+0x4c/0x64 net/core/dev.c:10769 netdev_release+0x88/0xb0 net/core/net-sysfs.c:1903 device_release+0x8c/0x1ac kobject_cleanup lib/kobject.c:713 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2c4/0x438 lib/kobject.c:761 netdev_run_todo+0x968/0xae0 net/core/dev.c:10633 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:112 default_device_exit_batch+0x4c4/0x520 net/core/dev.c:11595 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x5e0/0x9bc net/core/net_namespace.c:596 process_one_work+0x790/0x11b8 kernel/workqueue.c:2306 worker_thread+0x910/0x1034 kernel/workqueue.c:2453 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 irq event stamp: 2126408 hardirqs last enabled at (2126407): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (2126408): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387 softirqs last enabled at (2126346): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (2126346): [] batadv_tvlv_handler_unregister+0x160/0x27c net/batman-adv/tvlv.c:575 softirqs last disabled at (2126344): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (2126344): [] batadv_tvlv_handler_unregister+0xcc/0x27c net/batman-adv/tvlv.c:573 ---[ end trace 5025f8f7556e0743 ]---