------------[ cut here ]------------ WARNING: CPU: 0 PID: 6618 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xd4/0x174 kernel/rcu/sync.c:190 Modules linked in: CPU: 0 UID: 0 PID: 6618 Comm: kworker/0:5 Not tainted 6.16.0-rc6-syzkaller-gaaef6f251176 #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 : ffff8000a1a979f0 x29: ffff8000a1a97a00 x28: 1ffff00011ed029b x27: dfff800000000000 x26: ffff0000cef07918 x25: ffff0000c1080000 x24: dfff800000000000 x23: 0000000000000256 x22: dfff800000000000 x21: 1fffe0001bc47c6b x20: dfff800000000000 x19: ffff0000de23e358 x18: 1fffe000337d1c76 x17: ffff80008f67e000 x16: ffff80008af005d0 x15: 0000000000000001 x14: 1ffff00011ee19dd x13: 0000000000000000 x12: 0000000000000000 x11: ffff700011ee19de x10: 0000000000000003 x9 : 0000000000000003 x8 : 0000000000000002 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : ffff800080d45c2c x2 : 0000000000000001 x1 : ffff80008b548da0 x0 : ffff0000de23e358 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:283 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843 irq event stamp: 111602 hardirqs last enabled at (111601): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:86 [inline] hardirqs last enabled at (111601): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:96 hardirqs last disabled at (111602): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (111458): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (111458): [] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] softirqs last enabled at (111458): [] wg_packet_decrypt_worker+0x90c/0x994 drivers/net/wireguard/receive.c:499 softirqs last disabled at (111456): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (111456): [] ptr_ring_consume_bh include/linux/ptr_ring.h:365 [inline] softirqs last disabled at (111456): [] wg_packet_decrypt_worker+0x5e8/0x994 drivers/net/wireguard/receive.c:499 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6618 at kernel/rcu/sync.c:180 rcu_sync_dtor+0xdc/0x174 kernel/rcu/sync.c:190 Modules linked in: CPU: 0 UID: 0 PID: 6618 Comm: kworker/0:5 Tainted: G W 6.16.0-rc6-syzkaller-gaaef6f251176 #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 : ffff8000a1a979f0 x29: ffff8000a1a97a00 x28: 1ffff00011ed029b x27: dfff800000000000 x26: ffff0000cef07918 x25: ffff0000c1080000 x24: dfff800000000000 x23: 0000000000000256 x22: dfff800000000000 x21: 1fffe0001bc47c6b x20: dfff800000000000 x19: ffff0000de23e358 x18: 1fffe000337d1c76 x17: ffff80008f67e000 x16: ffff80008052b2ac x15: ffff700014352f24 x14: 1ffff00014352f24 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700014352f24 x10: dfff800000000000 x9 : 0000000000000000 x8 : 0000000000000001 x7 : ffff8000805a29bc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008052b3c4 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:283 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843 irq event stamp: 111830 hardirqs last enabled at (111829): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:86 [inline] hardirqs last enabled at (111829): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:96 hardirqs last disabled at (111830): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (111830): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (111824): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (111824): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (111611): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6618 at kernel/rcu/sync.c:188 rcu_sync_dtor+0x104/0x174 kernel/rcu/sync.c:-1 Modules linked in: CPU: 0 UID: 0 PID: 6618 Comm: kworker/0:5 Tainted: G W 6.16.0-rc6-syzkaller-gaaef6f251176 #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 : ffff8000a1a979f0 x29: ffff8000a1a97a00 x28: 1ffff00011ed029b x27: dfff800000000000 x26: ffff0000cef07918 x25: ffff0000c1080000 x24: dfff800000000000 x23: 0000000000000256 x22: 0000000000000002 x21: 1fffe0001bc47c6b x20: dfff800000000000 x19: ffff0000de23e358 x18: 1fffe000337d1c76 x17: ffff80008f67e000 x16: ffff80008af006e0 x15: 0000000000000001 x14: 1ffff00014352f14 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700014352f15 x10: dfff800000000000 x9 : c280903d9f63b100 x8 : 0000000000000002 x7 : ffff80008af104c0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008af107d4 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:283 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843 irq event stamp: 112058 hardirqs last enabled at (112057): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (112057): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (112058): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (112030): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (112030): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (111835): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---