rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=9349, q=3 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294969914-4294959411), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g9349 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:27872 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5399 [inline]
 __schedule+0xf15/0x5c00 kernel/sched/core.c:6726
 __schedule_loop kernel/sched/core.c:6801 [inline]
 schedule+0xe7/0x270 kernel/sched/core.c:6816
 schedule_timeout+0x136/0x290 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x245/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5109 Comm: syz-executor167 Not tainted 6.7.0-rc1-next-20231116-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:check_preemption_disabled+0x2a/0xe0 lib/smp_processor_id.c:19
Code: 41 54 55 53 48 83 ec 08 65 8b 1d fd 9d 82 75 65 8b 05 f2 9d 82 75 a9 ff ff ff 7f 74 0b 48 83 c4 08 89 d8 5b 5d 41 5c c3 9c 58 <f6> c4 02 74 ee 65 48 8b 05 c9 9d 82 75 f6 40 2f 04 48 89 fd 74 09
RSP: 0018:ffffc90003b8fac0 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 1ffffffff1e315d1
RDX: 1ffff11004e9c8c3 RSI: ffffffff8accc2a0 RDI: ffffffff8b2f13e0
RBP: ffffffffffffffff R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8f18e117 R11: 0000000000000000 R12: ffff8880274e3b80
R13: 00007ffd30685040 R14: ffff8880274e3b80 R15: ffff8880274e54c0
FS:  00005555574a63c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f20ebffe6f0 CR3: 0000000075c25000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
 lockdep_hardirqs_on_prepare+0x11b/0x410 kernel/locking/lockdep.c:4357
 trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
 __local_bh_enable_ip+0xa4/0x120 kernel/softirq.c:386
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 fpregs_unlock arch/x86/include/asm/fpu/api.h:80 [inline]
 copy_fpstate_to_sigframe+0x2b3/0xa70 arch/x86/kernel/fpu/signal.c:233
 get_sigframe+0x455/0x920 arch/x86/kernel/signal.c:141
 x64_setup_rt_frame+0x129/0xcb0 arch/x86/kernel/signal_64.c:175
 setup_rt_frame arch/x86/kernel/signal.c:222 [inline]
 handle_signal arch/x86/kernel/signal.c:266 [inline]
 arch_do_signal_or_restart+0x5e2/0x7e0 arch/x86/kernel/signal.c:311
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:88
 entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f20ebfe6c29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 1b 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd30685438 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f20ebfe6c29
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 00007f20ec03609e R09: 00007f20ec03609e
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd30685600
R13: 00005555574a6370 R14: 00007ffd30685550 R15: 00007ffd30685540
 </TASK>