------------[ cut here ]------------
WARNING: CPU: 1 PID: 4424 at kernel/rcu/tree_stall.h:970 rcu_check_gp_start_stall+0x2dc/0x460 kernel/rcu/tree_stall.h:962
Modules linked in:
CPU: 1 PID: 4424 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_check_gp_start_stall+0x2dc/0x460 kernel/rcu/tree_stall.h:970
Code: ff ff ff 48 c7 c7 20 3f a1 96 be 04 00 00 00 e8 3a 5d 65 00 48 89 df b8 01 00 00 00 87 05 8c 89 35 15 85 c0 0f 85 19 ff ff ff <0f> 0b 48 81 ff 80 06 93 8c 74 47 48 c7 c0 e4 42 ff 8d 48 c1 e8 03
RSP: 0000:ffffc900034e7ad8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffff8c930680 RCX: ffffffff816bb586
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8c930680
RBP: ffffc900034e7d50 R08: 0000000000000004 R09: 0000000000000003
R10: fffffbfff2d427e4 R11: 1ffffffff2d427e4 R12: 0000000000002904
R13: dffffc0000000000 R14: 0000000000000a06 R15: dffffc0000000000
FS:  00007f2fb60ab6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006a81000 CR3: 000000007bcde000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_core+0x5d9/0x16a0 kernel/rcu/tree.c:2552
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0033:0x7f2fb504d6e0
Code: 44 24 20 0f 29 44 24 30 0f 29 44 24 40 48 8b 44 24 08 ff d0 48 83 c4 50 31 c0 5b 5d 41 5c 41 5d 41 5e c3 0f 1f 80 00 00 00 00 <c3> 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 c3 66 66 2e 0f 1f
RSP: 002b:00007f2fb60aaa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f2fb53e5fa0 RCX: 00007f2fb518f749
RDX: 00007f2fb60aaa80 RSI: 00007f2fb60aabb0 RDI: 0000000000000011
RBP: 00007f2fb5213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2fb53e6038 R14: 00007f2fb53e5fa0 R15: 00007ffd162539b8
 </TASK>