------------[ 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: 19900 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline] WARNING: CPU: 0 PID: 19900 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] WARNING: CPU: 0 PID: 19900 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 Modules linked in: CPU: 0 PID: 19900 Comm: syz.5.4336 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 : ffff800008007a10 x29: ffff800008007a50 x28: ffff0000f572f600 x27: 0000000000000000 x26: ffff800011bab020 x25: ffff0000f572f490 x24: ffff800010b81b28 x23: ffff0000f5f02bd0 x22: ffff0000f572f000 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000f572f400 x18: ffff800011b8bf60 x17: 6e6968207473696c x16: ffff8000082d9364 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe00033ea87a3 x12: 0000000000ff0100 x11: ff00800008194238 x10: 0000000000000000 x9 : c7e174f7aba41e00 x8 : c7e174f7aba41e00 x7 : fffffffffffcb4f0 x6 : fffffffffffcb4b0 x5 : ffff800008007498 x4 : ffff8000152c8f38 x3 : ffff800008538704 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+0x104/0x1e8 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] __kmem_cache_free+0xbc/0x218 mm/slub.c:3700 kfree+0xd0/0x1a8 mm/slab_common.c:988 rose_neigh_put include/net/rose.h:166 [inline] rose_timer_expiry+0x43c/0x5a0 net/rose/rose_timer.c:183 call_timer_fn+0x1b8/0x95c kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x478/0x6f0 kernel/time/timer.c:2023 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2036 handle_softirqs+0x318/0xc60 kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x438 kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] lock_acquire+0x24c/0x63c kernel/locking/lockdep.c:5665 __might_fault+0xc4/0x124 mm/memory.c:5850 ____sys_recvmsg+0x310/0x768 net/socket.c:2750 ___sys_recvmsg net/socket.c:2779 [inline] do_recvmmsg+0x388/0xa0c net/socket.c:2873 __sys_recvmmsg net/socket.c:2952 [inline] __do_sys_recvmmsg net/socket.c:2975 [inline] __se_sys_recvmmsg net/socket.c:2968 [inline] __arm64_sys_recvmmsg+0x17c/0x23c net/socket.c:2968 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 559415 hardirqs last enabled at (559414): [] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:261 hardirqs last disabled at (559415): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (551094): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (551094): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (558879): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ 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: 0 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline] WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 : ffff800008007a10 x29: ffff800008007a50 x28: ffff0000f5ca4e00 x27: 0000000000000000 x26: ffff800011bab020 x25: ffff0000f5ca4c90 x24: ffff800010b81b28 x23: ffff0000ce034658 x22: ffff0000f5ca4000 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000f5ca4c00 x18: ffff800011b8bf60 x17: 6e6968207473696c x16: ffff8000082d9364 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe00033ea87a3 x12: 0000000000ff0100 x11: ff00800008194238 x10: 0000000000000000 x9 : c5e23f844130c500 x8 : c5e23f844130c500 x7 : fffffffffffcc8b0 x6 : fffffffffffcc858 x5 : ffff800008007498 x4 : ffff8000152c9670 x3 : ffff800008538704 x2 : 0000000000000001 x1 : 0000000000000102 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+0x104/0x1e8 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] __kmem_cache_free+0xbc/0x218 mm/slub.c:3700 kfree+0xd0/0x1a8 mm/slab_common.c:988 rose_neigh_put include/net/rose.h:166 [inline] rose_timer_expiry+0x43c/0x5a0 net/rose/rose_timer.c:183 call_timer_fn+0x1b8/0x95c kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x478/0x6f0 kernel/time/timer.c:2023 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2036 handle_softirqs+0x318/0xc60 kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x438 kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0x68/0xd8 kernel/sched/idle.c:109 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1d8/0x4c8 kernel/sched/idle.c:303 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:401 rest_init+0x2d4/0x2f0 init/main.c:745 start_kernel+0x0/0x538 init/main.c:905 start_kernel+0x48c/0x538 init/main.c:1152 __primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468 irq event stamp: 8339163 hardirqs last enabled at (8339162): [] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:261 hardirqs last disabled at (8339163): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (8338686): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (8338686): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (8338843): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---