watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u8:10:3478] Modules linked in: irq event stamp: 140598 hardirqs last enabled at (140597): [] irqentry_exit+0x1b4/0x308 kernel/entry/common.c:219 hardirqs last disabled at (140598): [] enter_from_kernel_mode+0x14/0x34 arch/arm64/kernel/entry-common.c:42 softirqs last enabled at (140594): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (140594): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (140579): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 CPU: 0 UID: 0 PID: 3478 Comm: kworker/u8:10 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: events_unbound toggle_allocation_gate pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:342 [inline] pc : smp_call_function_many_cond+0xed0/0x1418 kernel/smp.c:877 lr : csd_lock_wait kernel/smp.c:342 [inline] lr : smp_call_function_many_cond+0xee8/0x1418 kernel/smp.c:877 sp : ffff8000a36b7740 x29: ffff8000a36b7850 x28: 0000000000000011 x27: ffff00019bbfebc0 x26: 0000000000000001 x25: ffff80008f872008 x24: ffffffffffffffff x23: 1fffe0003377fd78 x22: dfff800000000000 x21: 1fffe0003377fd79 x20: ffff00019bc27a88 x19: ffff00019bbfebc8 x18: 1fffe0003377d090 x17: ffff80008f86e000 x16: ffff800082e5e68c x15: 0000000000000001 x14: 1fffe00033784f51 x13: 0000000000000000 x12: 0000000000000000 x11: ffff600033784f52 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000011 x7 : ffff80008022e4bc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000806a2ae4 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:231 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:257 [inline] (P) csd_lock_wait kernel/smp.c:342 [inline] (P) smp_call_function_many_cond+0xed0/0x1418 kernel/smp.c:877 (P) smp_call_function_many kernel/smp.c:900 [inline] smp_call_function kernel/smp.c:922 [inline] kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1067 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34 __jump_label_update+0x314/0x33c kernel/jump_label.c:521 jump_label_update+0x3f0/0x484 kernel/jump_label.c:919 static_key_disable_cpuslocked+0xd0/0x1e0 kernel/jump_label.c:240 static_key_disable+0x24/0x38 kernel/jump_label.c:248 toggle_allocation_gate+0x1a4/0x240 mm/kfence/core.c:879 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 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 26 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: rcu_gp process_srcu pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:-1 [inline] pc : arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] pc : handle_softirqs+0x1f8/0xc88 kernel/softirq.c:606 lr : handle_softirqs+0x1f4/0xc88 kernel/softirq.c:606 sp : ffff800097bd7ee0 x29: ffff800097bd7f80 x28: ffff0000c1b73900 x27: 0000000000000086 x26: ffff0000c1b73908 x25: ffff80008f86e828 x24: ffff0000c1b73910 x23: ffff0000c1b73900 x22: 1fffe0001836e721 x21: dfff800000000000 x20: ffff80008f7bb24c x19: ffff00019bc20940 x18: 1fffe00033781890 x17: ffff80010c451000 x16: ffff8000805387e4 x15: 0000000000000001 x14: 1ffff00012ec2bf8 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093398d48 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000000011768 x7 : ffff800080642640 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000002 x1 : ffff80008ee5c07c x0 : ffff80010c451000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) handle_softirqs+0x1f8/0xc88 kernel/softirq.c:606 (P) __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723 irq_exit_rcu+0x14/0x84 kernel/softirq.c:739 __el1_irq arch/arm64/kernel/entry-common.c:498 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] (P) _raw_spin_unlock_irq+0x34/0x80 kernel/locking/spinlock.c:202 (P) spin_unlock_irq include/linux/spinlock.h:401 [inline] process_srcu+0x7c8/0x1564 kernel/rcu/srcutree.c:1998 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