------------[ cut here ]------------ WARNING: CPU: 1 PID: 2291 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xd4/0x174 kernel/rcu/sync.c:190 Modules linked in: CPU: 1 UID: 0 PID: 2291 Comm: kworker/1:2 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events destroy_super_work pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : rcu_sync_dtor+0xd4/0x174 kernel/rcu/sync.c:190 lr : percpu_free_rwsem+0x48/0x88 kernel/locking/percpu-rwsem.c:42 sp : ffff8000a12679f0 x29: ffff8000a1267a00 x28: ffff80008f31e6e8 x27: 1fffe00019a97b72 x26: 0000000000000001 x25: ffff0000cc6f0418 x24: dfff800000000000 x23: 00000000000001ca x22: dfff800000000000 x21: 1fffe0001b34cc6a x20: dfff800000000000 x19: ffff0000d9a66350 x18: 1fffe0003386f276 x17: ffff80008f31e000 x16: ffff80008adbe9e4 x15: 0000000000000001 x14: 1ffff00011e7596d x13: 0000000000000000 x12: 0000000000000000 x11: ffff700011e7596e x10: 0000000000000003 x9 : 0000000000000003 x8 : 0000000000000002 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : ffff800080d24fc0 x2 : 0000000000000001 x1 : ffff80008b3ebc40 x0 : ffff0000d9a66350 Call trace: rcu_sync_dtor+0xd4/0x174 kernel/rcu/sync.c:190 (P) percpu_free_rwsem+0x48/0x88 kernel/locking/percpu-rwsem.c:42 destroy_super_work+0xec/0x154 fs/super.c:282 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 irq event stamp: 142374 hardirqs last enabled at (142373): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (142374): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (142274): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (142274): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (142251): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2291 at kernel/rcu/sync.c:180 rcu_sync_dtor+0xdc/0x174 kernel/rcu/sync.c:190 Modules linked in: CPU: 1 UID: 0 PID: 2291 Comm: kworker/1:2 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events destroy_super_work pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : rcu_sync_dtor+0xdc/0x174 kernel/rcu/sync.c:190 lr : spin_lock_irq include/linux/spinlock.h:376 [inline] lr : rcu_sync_dtor+0x54/0x174 kernel/rcu/sync.c:179 sp : ffff8000a12679f0 x29: ffff8000a1267a00 x28: ffff80008f31e6e8 x27: 1fffe00019a97b72 x26: 0000000000000001 x25: ffff0000cc6f0418 x24: dfff800000000000 x23: 00000000000001ca x22: dfff800000000000 x21: 1fffe0001b34cc6a x20: dfff800000000000 x19: ffff0000d9a66350 x18: 1fffe0003386f276 x17: ffff80008f31e000 x16: ffff800080528c04 x15: ffff70001424cf24 x14: 1ffff0001424cf24 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff70001424cf24 x10: dfff800000000000 x9 : 0000000000000000 x8 : 0000000000000001 x7 : ffff80008059ee00 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800080528d1c x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: rcu_sync_dtor+0xdc/0x174 kernel/rcu/sync.c:190 (P) percpu_free_rwsem+0x48/0x88 kernel/locking/percpu-rwsem.c:42 destroy_super_work+0xec/0x154 fs/super.c:282 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 irq event stamp: 142740 hardirqs last enabled at (142739): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (142739): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (142740): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (142740): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (142734): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (142734): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (142379): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2291 at kernel/rcu/sync.c:188 rcu_sync_dtor+0x104/0x174 kernel/rcu/sync.c:-1 Modules linked in: CPU: 1 UID: 0 PID: 2291 Comm: kworker/1:2 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events destroy_super_work pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : rcu_sync_dtor+0x104/0x174 kernel/rcu/sync.c:-1 lr : rcu_sync_dtor+0xac/0x174 kernel/rcu/sync.c:187 sp : ffff8000a12679f0 x29: ffff8000a1267a00 x28: ffff80008f31e6e8 x27: 1fffe00019a97b72 x26: 0000000000000001 x25: ffff0000cc6f0418 x24: dfff800000000000 x23: 00000000000001ca x22: 0000000000000002 x21: 1fffe0001b34cc6a x20: dfff800000000000 x19: ffff0000d9a66350 x18: 1fffe0003386f276 x17: ffff80008f31e000 x16: ffff80008adbeaf4 x15: 0000000000000001 x14: 1ffff0001424cf14 x13: 0000000000000000 x12: 0000000000000000 x11: ffff70001424cf15 x10: dfff800000000000 x9 : bde4b82980174100 x8 : 0000000000000002 x7 : ffff80008adce2f0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008adce604 x2 : 0000000000000001 x1 : 0000000000000008 x0 : 0000000000000001 Call trace: rcu_sync_dtor+0x104/0x174 kernel/rcu/sync.c:-1 (P) percpu_free_rwsem+0x48/0x88 kernel/locking/percpu-rwsem.c:42 destroy_super_work+0xec/0x154 fs/super.c:282 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 irq event stamp: 142992 hardirqs last enabled at (142991): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (142991): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (142992): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (142968): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (142968): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (142745): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---