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WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1049, CPU#1: syz.2.113/6529
Modules linked in:
CPU: 1 UID: 0 PID: 6529 Comm: syz.2.113 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1049
Code: ff ff 48 c7 c7 a0 35 af 99 be 04 00 00 00 e8 83 35 80 00 4c 89 f7 b8 01 00 00 00 87 05 95 07 07 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff c0 46 14 8e 74 47 48 c7 c0 a0 5f a2 8f 48 c1 e8
RSP: 0000:ffffc9000ef0fab8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000a06 RCX: ffffffff81a82dfd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e1446c0
RBP: ffffc9000ef0fd70 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff335e6b4 R12: 0000000000002904
R13: 1ffff110170e7762 R14: ffffffff8e1446c0 R15: dffffc0000000000
FS:  00007f8e9ddf66c0(0000) GS:ffff888125d25000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efebda93990 CR3: 000000007f086000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 rcu_core+0x6a9/0x1870 kernel/rcu/tree.c:2852
 handle_softirqs+0x27d/0x850 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
 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: 0033:0x7f8e9fbb7e80
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 8a 54 08 00 e8 05 8f f8 ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007f8e9ddf5ab8 EFLAGS: 00000217
RAX: 0000000000000000 RBX: 00007f8e9fde6180 RCX: 00007f8e9fb8f749
RDX: 00007f8e9ddf5ac0 RSI: 00007f8e9ddf5bf0 RDI: 0000000000000021
RBP: 00007f8e9fc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8e9fde6218 R14: 00007f8e9fde6180 R15: 00007ffd49a066f8
 </TASK>