------------[ cut here ]------------ ODEBUG: free active (active state 0) 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 type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:272 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:315 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:333 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: ax25_cb_put include/net/ax25.h:282 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: rose_link_up net/rose/rose_link.c:131 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: rose_t0timer_expiry+0x0/0x344 net/rose/rose_link.c:271 WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline] WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 Modules linked in: CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:515 [inline] pc : __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] pc : debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 lr : debug_print_object lib/debugobjects.c:515 [inline] lr : __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] lr : debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 sp : ffff80001c8c77c0 x29: ffff80001c8c7800 x28: ffff0000d6e60e00 x27: 0000000000000000 x26: ffff800011adace0 x25: ffff0000d6e60c90 x24: ffff800010ad8848 x23: ffff0000c94ef738 x22: ffff0000d6e60000 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000d6e60c00 x18: 000000008708b5d3 x17: 6e6968207473696c x16: ffff8000082d22e0 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008191ca8 x10: 0000000000000000 x9 : 54a1fdaa66681500 x8 : 54a1fdaa66681500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001c8c7258 x4 : ffff8000151a4820 x3 : ffff80000852e404 x2 : 0000000000000001 x1 : 0000000100000101 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:515 [inline] __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 slab_free_hook mm/slub.c:1704 [inline] slab_free_freelist_hook+0x104/0x1ec mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] __kmem_cache_free+0xc0/0x224 mm/slub.c:3700 kfree+0xd0/0x1ac mm/slab_common.c:988 rose_neigh_put include/net/rose.h:166 [inline] rose_timer_expiry+0x43c/0x5ac net/rose/rose_timer.c:183 call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x460/0x6bc kernel/time/timer.c:1820 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:963 smpboot_thread_fn+0x4b0/0x964 kernel/smpboot.c:164 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 48193117 hardirqs last enabled at (48193116): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (48193117): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (48192378): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (48192378): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (48192381): [] run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:963 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: free active (active state 0) 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 type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:272 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:315 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:333 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: ax25_cb_put include/net/ax25.h:282 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: rose_link_up net/rose/rose_link.c:131 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: rose_t0timer_expiry+0x0/0x344 net/rose/rose_link.c:271 WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline] WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] WARNING: CPU: 0 PID: 15 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 Modules linked in: CPU: 0 PID: 15 Comm: ksoftirqd/0 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:515 [inline] pc : __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] pc : debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 lr : debug_print_object lib/debugobjects.c:515 [inline] lr : __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] lr : debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 sp : ffff80001c8c77c0 x29: ffff80001c8c7800 x28: ffff0000f664b200 x27: 0000000000000000 x26: ffff800011adace0 x25: ffff0000f664b090 x24: ffff800010ad8848 x23: ffff0000d4f4b9d8 x22: ffff0000f664b000 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000f664b000 x18: 00000000a44b53c6 x17: 6e6968207473696c x16: ffff8000082d22e0 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008191ca8 x10: 0000000000000000 x9 : 54a1fdaa66681500 x8 : 54a1fdaa66681500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001c8c7258 x4 : ffff8000151a4820 x3 : ffff80000852e404 x2 : 0000000000000001 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:515 [inline] __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 slab_free_hook mm/slub.c:1704 [inline] slab_free_freelist_hook+0x104/0x1ec mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] __kmem_cache_free+0xc0/0x224 mm/slub.c:3700 kfree+0xd0/0x1ac mm/slab_common.c:988 rose_neigh_put include/net/rose.h:166 [inline] rose_timer_expiry+0x43c/0x5ac net/rose/rose_timer.c:183 call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x460/0x6bc kernel/time/timer.c:1820 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:963 smpboot_thread_fn+0x4b0/0x964 kernel/smpboot.c:164 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 55961533 hardirqs last enabled at (55961532): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (55961533): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (55960778): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (55960778): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (55960781): [] run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:963 ---[ end trace 0000000000000000 ]---