rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=8477, q=75 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294958125-4294947623), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g8477 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:27496 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x14e2/0x4580 kernel/sched/core.c:6700
 schedule+0xbd/0x170 kernel/sched/core.c:6774
 schedule_timeout+0x160/0x280 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x302/0x1560 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x99/0x380 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 5816 Comm: vhost-5815 Not tainted 6.6.97-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/19/2025
RIP: 0010:llist_reverse_order+0x41/0x70 lib/llist.c:82
Code: 42 45 31 e4 49 bf 00 00 00 00 00 fc ff df 4c 89 f3 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 72 b8 bf fd 4c 8b 33 <4c> 89 23 4d 85 f6 74 0a e8 82 09 67 fd 49 89 dc eb d2 e8 78 09 67
RSP: 0018:ffffc900046ffd60 EFLAGS: 00000246
RAX: 1ffff1100ec8a9ae RBX: ffff888076454d70 RCX: ffff888031c83c00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888076454d70
RBP: ffffc900046fff20 R08: ffff88801d64d9a7 R09: 1ffff11003ac9b34
R10: dffffc0000000000 R11: ffffed1003ac9b35 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000555580219380(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd622b1f1f0 CR3: 0000000075925000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 vhost_run_work_list+0x9b/0x1b0 drivers/vhost/vhost.c:413
 vhost_task_fn+0x25a/0x3c0 kernel/vhost_task.c:49
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>