------------[ cut here ]------------
WARNING: kernel/signal.c:2174 at do_notify_parent+0xbd4/0xcc0 kernel/signal.c:-1, CPU#1: syz.3.331/5597
Modules linked in:
CPU: 1 UID: 0 PID: 5597 Comm: syz.3.331 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : do_notify_parent+0xbd4/0xcc0 kernel/signal.c:-1
lr : do_notify_parent+0xbd0/0xcc0 kernel/signal.c:2174
sp : ffff800096247b00
x29: ffff800096247c00 x28: ffff800096247b20 x27: dfff800000000000
x26: ffff700012c48f64 x25: ffff800096247ce0 x24: dfff800000000000
x23: ffff0000efc6bf90 x22: 0000000000000080 x21: 0000000000000080
x20: 0000000000000000 x19: ffff0000efc6ba00 x18: 0000000000000000
x17: 0000000000000002 x16: 0000000000000000 x15: 000000000000e432
x14: 00000000ffff8000 x13: 0000000000000006 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000001
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff800080328760
x2 : 0000000000000080 x1 : ffff0000efc6ba00 x0 : 0000000000000000
Call trace:
 do_notify_parent+0xbd4/0xcc0 kernel/signal.c:-1 (P)
 exit_notify kernel/exit.c:758 [inline]
 do_exit+0xf4c/0x1a6c kernel/exit.c:988
 __do_sys_exit kernel/exit.c:1086 [inline]
 __se_sys_exit kernel/exit.c:1084 [inline]
 do_group_exit+0x0/0x22c kernel/exit.c:1084
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 460
hardirqs last  enabled at (459): [<ffff8000867c300c>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last  enabled at (459): [<ffff8000867c300c>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
hardirqs last disabled at (460): [<ffff8000867c37ec>] __raw_write_lock_irq include/linux/rwlock_api_smp.h:211 [inline]
hardirqs last disabled at (460): [<ffff8000867c37ec>] _raw_write_lock_irq+0x28/0x70 kernel/locking/spinlock.c:330
softirqs last  enabled at (72): [<ffff800080139d58>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (72): [<ffff800080139d58>] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline]
softirqs last  enabled at (72): [<ffff800080139d58>] fpsimd_restore_current_state+0x218/0x710 arch/arm64/kernel/fpsimd.c:1805
softirqs last disabled at (70): [<ffff800080139b7c>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (70): [<ffff800080139b7c>] get_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:234 [inline]
softirqs last disabled at (70): [<ffff800080139b7c>] fpsimd_restore_current_state+0x3c/0x710 arch/arm64/kernel/fpsimd.c:1798
---[ end trace 0000000000000000 ]---