watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0]
Modules linked in:
irq event stamp: 387614
hardirqs last  enabled at (387613): [<ffff80008adc0480>] default_idle_call+0xcc/0xfc kernel/sched/idle.c:124
hardirqs last disabled at (387614): [<ffff80008adb9fa8>] __el1_irq arch/arm64/kernel/entry-common.c:580 [inline]
hardirqs last disabled at (387614): [<ffff80008adb9fa8>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:598
softirqs last  enabled at (387602): [<ffff8000803cf71c>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (387602): [<ffff8000803cf71c>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607
softirqs last disabled at (386749): [<ffff800080020efc>] __do_softirq+0x14/0x20 kernel/softirq.c:613
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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+0xd0/0xfc kernel/sched/idle.c:124
sp : ffff80008f297d00
x29: ffff80008f297d00 x28: 0000000000000001 x27: dfff800000000000
x26: 1ffff00011e52fa8 x25: 0000000000000000 x24: 0000000000000000
x23: 1ffff00011e68c18 x22: ffff80008f31e6e8 x21: 1ffff00011e63cdd
x20: 0000000000000000 x19: ffff8000804be180 x18: 1fffe0003386aa76
x17: ffff80008f31e000 x16: ffff8000804bdae0 x15: 0000000000000001
x14: 1fffe0003386c728 x13: 0000000000000000 x12: 0000000000000000
x11: ffff60003386c729 x10: 0000000000000003 x9 : 0000000000000000
x8 : 000000000005ea1d x7 : ffff80008064d12c x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008adbe448
x2 : 0000000000000000 x1 : ffff80008e9058f1 x0 : ffff80010d0e8000
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+0x1d8/0x454 kernel/sched/idle.c:325
 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:423
 rest_init+0x2d8/0x2f4 init/main.c:743
 start_kernel+0x44c/0x4a8 init/main.c:1099
 __primary_switched+0x8c/0x94 arch/arm64/kernel/head.S:246
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 44 Comm: kworker/u8:2 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound toggle_allocation_gate
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:340 [inline]
pc : smp_call_function_many_cond+0xe14/0x1308 kernel/smp.c:885
lr : csd_lock_wait kernel/smp.c:340 [inline]
lr : smp_call_function_many_cond+0xe2c/0x1308 kernel/smp.c:885
sp : ffff800097d577b0
x29: ffff800097d57830 x28: 0000000000000011 x27: 0000000000000000
x26: dfff800000000000 x25: ffff80008f321e88 x24: ffff00019c38f8c0
x23: ffffffffffffffff x22: 1fffe00033871f18 x21: 1fffe00033871f19
x20: ffff00019c371908 x19: ffff00019c38f8c8 x18: 1fffe0003386f276
x17: ffff80008f31e000 x16: ffff80008adbe9e4 x15: 0000000000000001
x14: 1fffe0003386e321 x13: 0000000000000000 x12: 0000000000000000
x11: ffff60003386e322 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000011 x7 : ffff80008022ec04 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff800080672898
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:340 [inline] (P)
 smp_call_function_many_cond+0xe14/0x1308 kernel/smp.c:885 (P)
 smp_call_function_many kernel/smp.c:909 [inline]
 smp_call_function kernel/smp.c:931 [inline]
 kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1076
 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34
 __jump_label_update+0x30c/0x334 kernel/jump_label.c:521
 jump_label_update+0x3f0/0x484 kernel/jump_label.c:919
 static_key_enable_cpuslocked+0x11c/0x220 kernel/jump_label.c:210
 static_key_enable+0x24/0x38 kernel/jump_label.c:223
 toggle_allocation_gate+0xbc/0x240 mm/kfence/core.c:850
 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