rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10505 ticks this GP) idle=5adc/1/0x4000000000000000 softirq=9700/9702 fqs=4502
	(t=10500 jiffies g=9509 q=9336 ncpus=2)
CPU: 1 PID: 4436 Comm: syz.0.16 Not tainted 6.1.146-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:save_xstate_epilog arch/x86/kernel/fpu/signal.c:154 [inline]
RIP: 0010:copy_fpstate_to_sigframe+0xaf3/0xcb0 arch/x86/kernel/fpu/signal.c:245
Code: 45 58 50 46 e8 5d 3c db 08 48 81 c7 00 02 00 00 48 89 f8 e8 bf 8a da 08 48 89 c6 89 d0 09 ce 83 c8 03 48 89 f9 e8 3c 3c db 08 <09> f1 49 09 cf 31 ff 4c 89 fe e8 9e 95 51 00 4d 85 ff 0f 94 c0 48
RSP: 0018:ffffc90003507ac0 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 00007ffd5df32cd0 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 00007ffd5df32d00
RBP: ffffc90003507cb0 R08: 0000000000000000 R09: fffff520006a0f76
R10: fffff520006a0f76 R11: 1ffff920006a0f70 R12: dffffc0000000000
R13: ffff88807b547290 R14: ffffc90003507b80 R15: 0000000000000000
FS:  0000555562a2b500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002f1c6000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 get_sigframe arch/x86/kernel/signal.c:297 [inline]
 __setup_rt_frame arch/x86/kernel/signal.c:472 [inline]
 setup_rt_frame arch/x86/kernel/signal.c:784 [inline]
 handle_signal arch/x86/kernel/signal.c:828 [inline]
 arch_do_signal_or_restart+0x610/0x1230 arch/x86/kernel/signal.c:873
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f228a58e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd5df32ec8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f228a7b5fa8 RCX: 00007f228a58e9a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f228a7b5fac
RBP: 0000000000000000 R08: 00213f65f54ffac2 R09: 000000075df331bf
R10: 0000000000000005 R11: 0000000000000246 R12: 00007f228a7b5fac
R13: 00007f228a7b5fa0 R14: 0000000000000095 R15: 0000000000000003
 </TASK>