hrtimer: interrupt took 24154702 ns
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10002 jiffies, g=6953, q=972 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294955531-4294945529), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10002 jiffies! g6953 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:14488 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x644/0xa20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0xac/0x140 kernel/sched/core.c:6828
 schedule_timeout+0x12c/0x190 kernel/time/timer.c:2572
 rcu_gp_fqs_loop+0x191/0x670 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x1c/0x150 kernel/rcu/tree.c:1862
 kthread+0x117/0x140 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 10 Comm: kworker/u8:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue:  0x0 (events_unbound)
RIP: 0010:kmap_local_sched_in kernel/sched/core.c:5189 [inline]
RIP: 0010:finish_task_switch+0x11d/0x360 kernel/sched/core.c:5291
Code: 48 c7 03 00 00 00 00 4c 89 ff 41 ff d3 0f 1f 00 4c 89 f3 4d 85 f6 75 e1 4c 89 ff e8 fd 51 5f 02 fb 41 80 a4 24 bb 14 00 00 bf <41> 83 bc 24 18 15 00 00 00 0f 85 85 00 00 00 48 8b 5d c8 0f 1f 44
RSP: 0018:ffffc9000005bdb0 EFLAGS: 00000246
RAX: 0000000080000001 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 22218ea5a99c19a3 RSI: ffffffff846af6f3 RDI: 00000000ffffffff
RBP: ffffc9000005bdf0 R08: 0000000000000000 R09: 000000000000003c
R10: 0000000000000000 R11: 0000000002e15c00 R12: ffff8881012d1bc0
R13: ffff888237d31158 R14: 0000000000000000 R15: ffff888237d31140
FS:  0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3517e6fd58 CR3: 0000000109bba000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 context_switch kernel/sched/core.c:5412 [inline]
 __schedule+0x64c/0xa20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0xac/0x140 kernel/sched/core.c:6828
 worker_thread+0x41d/0x4e0 kernel/workqueue.c:3431
 kthread+0x117/0x140 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>