------------[ cut here ]------------
WARNING: CPU: 0 PID: 18957 at kernel/rcu/tree_stall.h:1001 rcu_check_gp_start_stall+0x2dc/0x460 kernel/rcu/tree_stall.h:993
Modules linked in:
CPU: 0 PID: 18957 Comm: syz.5.3472 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:rcu_check_gp_start_stall+0x2dc/0x460 kernel/rcu/tree_stall.h:1001
Code: ff ff ff 48 c7 c7 a0 44 33 97 be 04 00 00 00 e8 7a 23 6e 00 48 89 df b8 01 00 00 00 87 05 dc 73 c1 15 85 c0 0f 85 19 ff ff ff <0f> 0b 48 81 ff 00 70 13 8d 74 47 48 c7 c0 5c b1 8c 8e 48 c1 e8 03
RSP: 0018:ffffc90000007c58 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffff8d137000 RCX: ffffffff8171d0b6
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8d137000
RBP: ffffc90000007ed0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff2e66894 R12: 0000000000002904
R13: 1ffff92000000fa8 R14: 0000000000000a06 R15: dffffc0000000000
FS:  00007fd0626d36c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3021eff8 CR3: 0000000041a3e000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 rcu_core+0x5ec/0x17f0 kernel/rcu/tree.c:2462
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 do_softirq+0xfa/0x1a0 kernel/softirq.c:479
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:406
 handle_signal arch/x86/kernel/signal.c:283 [inline]
 arch_do_signal_or_restart+0x4a2/0x7b0 arch/x86/kernel/signal.c:312
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd0617bd410
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d aa 1d 07 00 e8 65 65 f9 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:00007fd0626d2b38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fd061a25fa8 RCX: 00007fd06179de99
RDX: 00007fd0626d2b40 RSI: 00007fd0626d2c70 RDI: 0000000000000021
RBP: 00007fd061a25fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd061a26038 R14: 00007ffc1ad0a900 R15: 00007ffc1ad0a9e8
 </TASK>