------------[ cut here ]------------
WARNING: CPU: 1 PID: 21 at kernel/rcu/tree_stall.h:970 rcu_check_gp_start_stall+0x2c8/0x450 kernel/rcu/tree_stall.h:955
Modules linked in:
CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:rcu_check_gp_start_stall+0x2c8/0x450 kernel/rcu/tree_stall.h:970
Code: c7 c7 40 9f cd 91 be 04 00 00 00 e8 e2 2c 6e 00 b8 01 00 00 00 87 05 d7 b6 59 10 85 c0 0f 85 1c ff ff ff 48 c7 c0 40 fb 12 8d <0f> 0b 49 39 c7 74 47 48 c7 c0 e4 be 73 8e 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc900001b7a38 EFLAGS: 00010046
RAX: ffffffff8d12fb40 RBX: 00000000ffffcc00 RCX: ffffffff8173e85e
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff91cd9f40
RBP: ffffc900001b7c90 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880b993b8d2 R14: 0000000000000246 R15: ffffffff8d12fb40
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007d8d8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_core+0x699/0x1810 kernel/rcu/tree.c:2551
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938
 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>