rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=5849, q=173 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294955875-4294945372), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g5849 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28016 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562
 schedule+0xb9/0x180 kernel/sched/core.c:6638
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1340 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4283 Comm: syz-executor301 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xde/0x4a0 kernel/locking/lockdep.c:5633
Code: 0c 0f 83 a2 01 00 00 45 89 f4 41 c1 ee 06 4a 8d 3c f5 e8 de 1f 8e be 08 00 00 00 e8 1c 44 6f 00 4c 0f a3 25 bc a1 bb 0c 73 0d <e8> 9d 32 08 00 84 c0 0f 84 2e 02 00 00 48 c7 c0 a4 13 20 8e 48 c1
RSP: 0018:ffffc900042a7a20 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81643d24
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e1fdee8
RBP: ffffc900042a7b30 R08: ffffffff8e1fdeef R09: 1ffffffff1c3fbdd
R10: dffffc0000000000 R11: fffffbfff1c3fbde R12: 0000000000000000
R13: 1ffff92000854f50 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007fd699d996c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000058 CR3: 000000007581c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __might_fault+0xc2/0x120 mm/memory.c:5850
 clear_rseq_cs kernel/rseq.c:250 [inline]
 rseq_ip_fixup kernel/rseq.c:284 [inline]
 __rseq_handle_notify_resume+0x545/0x11f0 kernel/rseq.c:322
 rseq_handle_notify_resume include/linux/sched.h:2334 [inline]
 rseq_signal_deliver include/linux/sched.h:2342 [inline]
 setup_rt_frame arch/x86/kernel/signal.c:773 [inline]
 handle_signal arch/x86/kernel/signal.c:828 [inline]
 arch_do_signal_or_restart+0x275/0x1350 arch/x86/kernel/signal.c:873
 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:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd699dba517
Code: 00 85 c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 <0f> 05 48 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d0 ff ff ff f7 d8 64 89
RSP: 002b:00007fd699d99178 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fd699e69b28 RCX: 00007fd699dba519
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd699e69b28
RBP: 00007fd699e69b20 R08: 00007fd699d99cdc R09: 00007fd699d99cdc
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd699e69b2c
R13: 0000000000000000 R14: 00007ffecee7e290 R15: 00007ffecee7e378
 </TASK>