syzbot

watchdog: BUG: soft lockup - CPU#0 stuck for 28s! [swapper/0:0]
Modules linked in:
irq event stamp: 132596
hardirqs last  enabled at (132595): [<ffff80001127e064>] default_idle_call+0xb8/0x418 kernel/sched/idle.c:109
hardirqs last disabled at (132596): [<ffff8000111a3e04>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (132556): [<ffff80000819d0d8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (132556): [<ffff80000819d0d8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586
softirqs last disabled at (132343): [<ffff80000819d6dc>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (132343): [<ffff80000819d6dc>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (132343): [<ffff80000819d6dc>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (132343): [<ffff80000819d6dc>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:44
lr : arch_cpu_idle+0x14/0x20 arch/arm64/kernel/idle.c:45
sp : ffff8000140c7cb0
x29: ffff8000140c7cb0 x28: 1ffff00002829a62 x27: dfff800000000000
x26: 1ffff00002818fa4 x25: 0000000000000000 x24: 0000000000000000
x23: 1ffff0000282e710 x22: 0000000000000000 x21: dfff800000000000
x20: ffff80001414d310 x19: ffff800014173880 x18: 1fffe0003421f78e
x17: 1fffe0003421f78e x16: ffff80000805e2dc x15: ffff8000141eec20
x14: ffff0001a10fbc80 x13: 1ffff0000282a06b x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff8000111a4e84
x2 : 0000000000000001 x1 : ffff8000112fb080 x0 : ffff80018d058000
Call trace:
 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35
 default_idle_call+0xcc/0x418 kernel/sched/idle.c:112
 cpuidle_idle_call kernel/sched/idle.c:194 [inline]
 do_idle+0x1c8/0x480 kernel/sched/idle.c:306
 cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:403
 rest_init+0x360/0x390 init/main.c:741
 arch_call_rest_init+0x14/0x20 init/main.c:893
 start_kernel+0x49c/0x54c init/main.c:1140
 __primary_switched+0xa8/0xb0 arch/arm64/kernel/head.S:468