watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kworker/u9:6:7350] Modules linked in: irq event stamp: 4990 hardirqs last enabled at (4989): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (4989): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (4990): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (4990): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (4972): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (4972): [] rxrpc_peer_keepalive_dispatch net/rxrpc/peer_event.c:297 [inline] softirqs last enabled at (4972): [] rxrpc_peer_keepalive_worker+0xb64/0x11cc net/rxrpc/peer_event.c:343 softirqs last disabled at (4970): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (4970): [] rxrpc_peer_keepalive_dispatch net/rxrpc/peer_event.c:256 [inline] softirqs last disabled at (4970): [] rxrpc_peer_keepalive_worker+0x460/0x11cc net/rxrpc/peer_event.c:343 CPU: 1 UID: 0 PID: 7350 Comm: kworker/u9:6 Not tainted 6.14.0-rc3-syzkaller-ge6747d19291c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: hci0 hci_power_on pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 sp : ffff80009e797200 x29: ffff80009e797200 x28: 0000000000000005 x27: ffff0000c1be2588 x26: fffffdffc323b2d0 x25: fffffdffc347c340 x24: dead000000000100 x23: fffffdffc321f3d0 x22: ffff0000c1be18c0 x21: fffffdffc347c340 x20: ffff0000c1be2540 x19: 0000000000000000 x18: ffff80009e796ea0 x17: 000000000002026f x16: ffff8000804684b8 x15: 0000000000000001 x14: 1fffe0001837c4a8 x13: ffff80009e798000 x12: 0000000000000003 x11: 0000000000000002 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800080b58e80 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80008b87a540 x0 : ffff800123ca8000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] get_partial_node+0x38c/0x410 mm/slub.c:2868 get_partial mm/slub.c:2948 [inline] ___slab_alloc+0x6f0/0xf4c mm/slub.c:3806 __slab_alloc+0x74/0xd0 mm/slub.c:3916 __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] kmem_cache_alloc_node_noprof+0x310/0x420 mm/slub.c:4216 __alloc_skb+0x1e0/0x420 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1331 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:495 [inline] hci_cmd_sync_alloc+0x4c/0x350 net/bluetooth/hci_sync.c:58 hci_cmd_sync_add net/bluetooth/hci_sync.c:99 [inline] __hci_cmd_sync_sk+0x1d0/0xbd8 net/bluetooth/hci_sync.c:168 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:263 [inline] __hci_cmd_sync_status net/bluetooth/hci_sync.c:287 [inline] hci_reset_sync+0x5c/0x16c net/bluetooth/hci_sync.c:3581 hci_init1_sync net/bluetooth/hci_sync.c:3667 [inline] hci_init_sync net/bluetooth/hci_sync.c:4756 [inline] hci_dev_init_sync net/bluetooth/hci_sync.c:4948 [inline] hci_dev_open_sync+0xd0c/0x2d8c net/bluetooth/hci_sync.c:5026 hci_dev_do_open net/bluetooth/hci_core.c:411 [inline] hci_power_on+0x150/0x640 net/bluetooth/hci_core.c:940 process_one_work+0x810/0x1638 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3398 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.14.0-rc3-syzkaller-ge6747d19291c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:50 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff80008fb37cf0 x29: ffff80008fb37cf0 x28: dfff800000000000 x27: 1ffff00011f66fac x26: ffff80008fbbd000 x25: 0000000000000000 x24: 0000000000000001 x23: 1ffff00011f77ac0 x22: ffff80008fbbd600 x21: 0000000000000000 x20: ffff80008fbe6780 x19: ffff80008040f054 x18: 1fffe000366f1886 x17: ffff80008fbbd000 x16: ffff80008040e934 x15: 0000000000000001 x14: 1fffe000366f3537 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 000000000008f2e9 x7 : ffff8000805c368c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008b7c7894 x2 : 0000000000000000 x1 : ffff80008b87a540 x0 : ffff800123c84000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 (P) cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x1ec/0x4e0 kernel/sched/idle.c:325 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:423 rest_init+0x2dc/0x2f4 init/main.c:743 start_kernel+0x3f8/0x4f8 init/main.c:1099 __primary_switched+0x8c/0x94 arch/arm64/kernel/head.S:246