------------[ cut here ]------------
WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall.part.0+0x1c4/0x4b0 kernel/rcu/tree_stall.h:1049, CPU#1: syz.3.1657/12411
Modules linked in:
CPU: 1 UID: 0 PID: 12411 Comm: syz.3.1657 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_check_gp_start_stall.part.0+0x1c4/0x4b0 kernel/rcu/tree_stall.h:1049
Code: 88 61 01 00 00 be 04 00 00 00 48 c7 c7 c0 52 c2 9a e8 b0 3a 85 00 b8 01 00 00 00 87 05 25 c5 1e 19 85 c0 0f 85 3d 01 00 00 90 <0f> 0b 90 48 c7 c3 74 e5 88 90 48 81 fd 80 46 3d 8e 74 5a 48 b8 00
RSP: 0000:ffffc9000419fd28 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000002904 RCX: ffffffff81a38d90
RDX: fffffbfff3584a58 RSI: 0000000000000004 RDI: ffffffff9ac252c0
RBP: ffffffff8e3d4680 R08: 0000000000000001 R09: fffffbfff3584a58
R10: 0000000000000003 R11: ffff88801db12ff0 R12: 1ffffffff1c02250
R13: 0000000000000246 R14: ffffffff8e3d4680 R15: ffff8880b853bc52
FS:  00007fb5358656c0(0000) GS:ffff8881249f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb535864f98 CR3: 000000003aa96000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:1012 [inline]
 rcu_core+0x4cf/0x15f0 kernel/rcu/tree.c:2852
 handle_softirqs+0x219/0x950 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0x57/0xc0 arch/x86/kernel/apic/apic.c:1056
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0033:0x7fb53485145f
Code: c6 31 c0 e8 f3 e2 13 00 48 85 c0 75 26 69 3d 5c 42 ec 00 b8 0b 00 00 e8 4f e2 13 00 31 f6 bf 3c 00 00 00 31 c0 e8 d1 e2 13 00 <eb> fe 0f 1f 80 00 00 00 00 64 c7 04 25 94 ff ff ff 00 00 00 00 48
RSP: 002b:00007fb535864f10 EFLAGS: 00000217
RAX: 0000000000000000 RBX: 0000000000000058 RCX: 00007fb53498f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fb534a13f91 R08: 0000000000000058 R09: 0000000000000058
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb534be6218 R14: 00007fb534be6180 R15: 00007ffd56b592d8
 </TASK>