rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5406/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=7141, q=889 ncpus=2)
task:syz.4.33        state:R  running task     stack:26832 pid:5406  tgid:5404  ppid:5214   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 89 fb e8 23 00 00 00 48 8b 3d 3c 6d 74 0c 48 89 de 5b e9 33 61 58 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d7 03 00 65 8b 15 20 71
RSP: 0018:ffffc9000918fc10 EFLAGS: 00000202
RAX: 0000000046a5f401 RBX: ffff8881432fc888 RCX: ffffc9000918fb03
RDX: 0000000000000001 RSI: ffffffff8beae6e0 RDI: ffffffff8c3f8640
RBP: 1ffff1102865f911 R08: ffffffff8ff674ef R09: 1ffffffff1fece9d
R10: dffffc0000000000 R11: fffffbfff1fece9e R12: 1ffff1100c9c79e9
R13: ffff88802c69fca0 R14: ffffffff818aae86 R15: ffff888064e3bc2c
 cgroup_sk_alloc+0x306/0x400 kernel/cgroup/cgroup.c:6996
 sk_alloc+0x250/0x370 net/core/sock.c:2172
 unix_create1+0xb4/0x7a0
 unix_create+0x14e/0x200 net/unix/af_unix.c:1097
 __sock_create+0x490/0x920 net/socket.c:1571
 sock_create net/socket.c:1622 [inline]
 __sys_socketpair+0x33e/0x720 net/socket.c:1773
 __do_sys_socketpair net/socket.c:1822 [inline]
 __se_sys_socketpair net/socket.c:1819 [inline]
 __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1819
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb880777299
RSP: 002b:00007fb88153b048 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007fb880906058 RCX: 00007fb880777299
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000001
RBP: 00007fb8807e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020001480 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb880906058 R15: 00007fff442deeb8
 </TASK>
rcu: rcu_preempt kthread starved for 9846 jiffies! g7141 f0x0 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:26928 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111