------------[ cut here ]------------ WARNING: kernel/rcu/sync.c:177 at rcu_sync_dtor+0xd4/0x174 kernel/rcu/sync.c:190, CPU#0: kworker/0:0/9 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: events destroy_super_work pstate: 63400005 (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 : ffff800097cc7a00 x29: ffff800097cc7a10 x28: 1ffff00011f0e292 x27: dfff800000000000 x26: ffff0000c18cd618 x25: 1ffff00011f1fb4b x24: dfff800000000000 x23: 0000000000000003 x22: dfff800000000000 x21: 1fffe00019f7386a x20: dfff800000000000 x19: ffff0000cfb9c350 x18: 1fffe0003377d090 x17: ffff80010c42d000 x16: ffff800082e5e68c x15: 0000000000000001 x14: 1ffff00011f1fb4c x13: 0000000000000000 x12: 0000000000000000 x11: ffff700011f1fb4d x10: 0000000000000003 x9 : 0000000000000003 x8 : 0000000000000002 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : ffff800080db44e0 x2 : 0000000000000000 x1 : ffff80008b5a9ce0 x0 : ffff0000cfb9c350 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+0x1cc/0x2d0 fs/super.c:283 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3421 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 184266 hardirqs last enabled at (184265): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (184266): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (184108): [] local_bh_enable+0xc/0x2c include/linux/bottom_half.h:32 softirqs last disabled at (184104): [] local_bh_disable+0xc/0x2c include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: kernel/rcu/sync.c:180 at rcu_sync_dtor+0xdc/0x174 kernel/rcu/sync.c:190, CPU#0: kworker/0:0/9 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: events destroy_super_work pstate: 634000c5 (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 : ffff800097cc7a00 x29: ffff800097cc7a10 x28: 1ffff00011f0e292 x27: dfff800000000000 x26: ffff0000c18cd618 x25: 1ffff00011f1fb4b x24: dfff800000000000 x23: 0000000000000003 x22: dfff800000000000 x21: 1fffe00019f7386a x20: dfff800000000000 x19: ffff0000cfb9c350 x18: 1fffe0003377d090 x17: ffff80010c42d000 x16: ffff8000805448d4 x15: ffff700012f98f28 x14: 1ffff00012f98f28 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700012f98f28 x10: dfff800000000000 x9 : 0000000000000000 x8 : 0000000000000001 x7 : ffff8000805c1670 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff8000805449ec 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+0x1cc/0x2d0 fs/super.c:283 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3421 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 184574 hardirqs last enabled at (184573): [] irqentry_exit+0x1b4/0x308 kernel/entry/common.c:219 hardirqs last disabled at (184574): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (184574): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (184568): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (184568): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (184269): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: kernel/rcu/sync.c:188 at rcu_sync_dtor+0x104/0x174 kernel/rcu/sync.c:-1, CPU#0: kworker/0:0/9 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: events destroy_super_work pstate: 63400005 (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 : ffff800097cc7a00 x29: ffff800097cc7a10 x28: 1ffff00011f0e292 x27: dfff800000000000 x26: ffff0000c18cd618 x25: 1ffff00011f1fb4b x24: dfff800000000000 x23: 0000000000000003 x22: 0000000000000002 x21: 1fffe00019f7386a x20: dfff800000000000 x19: ffff0000cfb9c350 x18: 1fffe0003377d090 x17: ffff80010c42d000 x16: ffff800082e5e714 x15: 0000000000000001 x14: 1ffff00012f98f18 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700012f98f19 x10: dfff800000000000 x9 : c5ff33ff0a5db500 x8 : 0000000000000002 x7 : ffff80008afaa3a8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008afaa6bc 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+0x1cc/0x2d0 fs/super.c:283 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3421 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 184922 hardirqs last enabled at (184921): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (184921): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (184922): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (184904): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (184904): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (184577): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---