------------[ cut here ]------------ ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: __ll_sc_atomic_fetch_sub_release arch/arm64/include/asm/atomic_ll_sc.h:-1 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:389 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:432 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:450 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: ax25_cb_put include/net/ax25.h:281 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: rose_link_up net/rose/rose_link.c:131 [inline] ODEBUG: free active (active state 0) object: 000000006c8c4044 object type: timer_list hint: rose_t0timer_expiry+0x0/0x348 net/rose/rose_link.c:271 WARNING: CPU: 0 PID: 16058 at lib/debugobjects.c:615 debug_print_object lib/debugobjects.c:612 [inline] WARNING: CPU: 0 PID: 16058 at lib/debugobjects.c:615 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] WARNING: CPU: 0 PID: 16058 at lib/debugobjects.c:615 debug_check_no_obj_freed+0x390/0x470 lib/debugobjects.c:1129 Modules linked in: CPU: 0 UID: 0 PID: 16058 Comm: syz.2.3001 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:612 [inline] pc : __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] pc : debug_check_no_obj_freed+0x390/0x470 lib/debugobjects.c:1129 lr : debug_print_object lib/debugobjects.c:612 [inline] lr : __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] lr : debug_check_no_obj_freed+0x390/0x470 lib/debugobjects.c:1129 sp : ffff800097927aa0 x29: ffff800097927ae0 x28: ffff0000c881e600 x27: 0000000000000000 x26: ffff80008aed7f20 x25: ffff0000c881e490 x24: ffff800089f7446c x23: ffff0000df015818 x22: ffff0000c881e000 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000c881e400 x18: 1fffe000337db690 x17: 626f203434303463 x16: ffff800082deb6c0 x15: 0000000000000001 x14: 1ffff00012f24ec8 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700012f24ec9 x10: 0000000000ff0100 x9 : ea9eccc92cea2e00 x8 : ea9eccc92cea2e00 x7 : ffff800080564a40 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807d6130 x2 : 0000000000000002 x1 : 0000000000000102 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:612 [inline] (P) __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] (P) debug_check_no_obj_freed+0x390/0x470 lib/debugobjects.c:1129 (P) slab_free_hook mm/slub.c:2470 [inline] slab_free mm/slub.c:6630 [inline] kfree+0x120/0x600 mm/slub.c:6837 rose_neigh_put include/net/rose.h:166 [inline] rose_timer_expiry+0x43c/0x5ac net/rose/rose_timer.c:183 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x51c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723 irq_exit_rcu+0x14/0x84 kernel/softirq.c:739 __el1_irq arch/arm64/kernel/entry-common.c:520 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:532 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:537 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) raw_spin_rq_unlock_irq kernel/sched/sched.h:1558 [inline] (P) finish_lock_switch+0xb4/0x1c0 kernel/sched/core.c:5073 (P) finish_task_switch+0x120/0x5a4 kernel/sched/core.c:5191 context_switch kernel/sched/core.c:5328 [inline] __schedule+0x13b4/0x2864 kernel/sched/core.c:6929 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7256 raw_irqentry_exit_cond_resched+0x30/0x44 kernel/entry/common.c:168 irqentry_exit+0xd4/0x108 kernel/entry/common.c:211 __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:68 [inline] exit_to_kernel_mode+0x10/0x1c arch/arm64/kernel/entry-common.c:75 __el1_irq arch/arm64/kernel/entry-common.c:522 [inline] el1_interrupt+0x4c/0x60 arch/arm64/kernel/entry-common.c:532 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:537 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __do_fault+0x260/0x390 mm/memory.c:5304 (P) do_read_fault mm/memory.c:5698 [inline] do_fault mm/memory.c:5832 [inline] do_pte_missing mm/memory.c:4361 [inline] handle_pte_fault mm/memory.c:6177 [inline] __handle_mm_fault mm/memory.c:6318 [inline] handle_mm_fault+0x2abc/0x4d80 mm/memory.c:6487 faultin_page mm/gup.c:1126 [inline] __get_user_pages+0x1f4c/0x2d94 mm/gup.c:1428 populate_vma_page_range+0x258/0x348 mm/gup.c:1860 __mm_populate+0x208/0x330 mm/gup.c:1963 mm_populate include/linux/mm.h:3471 [inline] vm_mmap_pgoff+0x398/0x45c mm/util.c:586 ksys_mmap_pgoff+0xd0/0x5b8 mm/mmap.c:604 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 8679 hardirqs last enabled at (8678): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (8679): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (5446): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (5446): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (8665): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---