rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=5e04/0/0x1 softirq=9724/9729 fqs=46
	(t=10501 jiffies g=9725 q=2074 ncpus=2)
rcu: rcu_preempt kthread starved for 10409 jiffies! g9725 f0x0 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:26432 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4473 Comm: syz.2.45 Not tainted 6.1.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:lock_is_held_type+0x0/0x190 kernel/locking/lockdep.c:5690
Code: a3 ef 03 00 75 d6 48 c7 c7 a0 fc 6b 8a 48 c7 c6 e0 fc 6b 8a e8 21 c1 3d f7 0f 0b eb bf e8 98 fd ff ff 0f 1f 84 00 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00
RSP: 0018:ffffc9000498fa98 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff92000931f5c RCX: ffff8880265b1dc0
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8c92aa20
RBP: ffffc9000498fbb8 R08: dffffc0000000000 R09: ffffed1004cb63b9
R10: ffffed1004cb63b9 R11: 1ffff11004cb63b8 R12: ffff88802ebaf2c0
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff8880265b1dc0
FS:  00007fe83bfd06c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d71eff8 CR3: 0000000023562000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_is_held include/linux/lockdep.h:283 [inline]
 __might_resched+0xf2/0x610 kernel/sched/core.c:9928
 try_to_freeze include/linux/freezer.h:53 [inline]
 get_signal+0x146/0x1350 kernel/signal.c:2661
 arch_do_signal_or_restart+0xb0/0x1230 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 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:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe83b18e967
Code: ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89
RSP: 002b:00007fe83bfd0038 EFLAGS: 00000246
RAX: 0000000000000113 RBX: 00007fe83b3b5fa0 RCX: 00007fe83b18e969
RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fe83b210ab1 R08: 0000000008000f28 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe83b3b5fa0 R15: 00007ffd2c680f38
 </TASK>
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:736
Code: 48 89 df e8 67 3a b9 f7 e9 4c ff ff ff e8 4d 14 f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 66 90 0f 00 2d b7 a2 4d 00 fb f4 <c3> 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48
RSP: 0018:ffffc90000177de8 EFLAGS: 000002c6
RAX: 481103d073ab3300 RBX: ffffffff8a1900d7 RCX: 481103d073ab3300
RDX: 0000000000000001 RSI: ffffffff8a6bfe00 RDI: ffffffff8abf0da0
RBP: ffffc90000177f20 R08: dffffc0000000000 R09: ffffed10171e6aee
R10: ffffed10171e6aee R11: 1ffff110171e6aed R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88813fea1dc0 R15: 1ffffffff1bfd07e
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ffb6ed680 CR3: 0000000023562000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 default_idle_call+0x84/0xc0 kernel/sched/idle.c:109
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0x1fc/0x570 kernel/sched/idle.c:303
 cpu_startup_entry+0x3f/0x60 kernel/sched/idle.c:401
 start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:281
 secondary_startup_64_no_verify+0xcf/0xdb
 </TASK>