rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=4604/1/0x4000000000000000 softirq=15070/15070 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=9877, q=338 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6470 Comm: syz.1.164 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:do_raw_spin_lock+0x125/0x290
Code: 00 00 c7 44 24 40 00 00 00 00 48 89 df be 04 00 00 00 e8 0e 6b 86 00 48 8d 7c 24 40 be 04 00 00 00 e8 ff 6a 86 00 8b 44 24 40 <b9> 01 00 00 00 f0 0f b1 0b 0f 85 dd 00 00 00 65 8b 1d b9 eb 25 11
RSP: 0018:ffffc900000077c0 EFLAGS: 00000097
RAX: 0000000000000000 RBX: ffff88804b027ac0 RCX: ffffffff819e1461
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007800
RBP: ffffc90000007870 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f00 R12: ffff88804b027ad0
R13: ffff88804b027ac8 R14: 1ffff11009604f5a R15: 1ffff11009604f59
FS:  00007f146ea4a6c0(0000) GS:ffff8880b83e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003000 CR3: 0000000031bb2000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 _raw_spin_lock_irqsave+0xb3/0xf0
 hrtimer_try_to_cancel+0x22b/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3b8/0x500
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:debug_lockdep_rcu_enabled+0x18/0x40
Code: cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 57 34 40 04 00 74 1e 83 3d 3a 63 40 04 00 74 15 <65> 48 8b 0c 25 08 00 c4 92 31 c0 83 b9 2c 0b 00 00 00 0f 94 c0 e9
RSP: 0018:ffffc900072ff410 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff905c4101 RCX: ffffc900072ffec0
RDX: ffffc900072ff501 RSI: dffffc0000000000 RDI: ffffc900072ff4f0
RBP: dffffc0000000000 R08: ffffc900072ffea8 R09: 0000000000000000
R10: ffffc900072ff538 R11: fffff52000e5fea9 R12: ffffc900072ffeb8
R13: ffffc900072f8000 R14: ffffc900072ff4e8 R15: ffffffff8173bd25
 unwind_next_frame+0x195c/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kvmalloc_node_noprof+0x5cd/0x910
 bpf_jit_binary_pack_alloc+0x143/0x340
 bpf_int_jit_compile+0x7e9/0x1450
 bpf_prog_select_runtime+0x4a3/0x820
 bpf_prog_load+0x1343/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f146db8eba9
Code: 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 01 48
RSP: 002b:00007f146ea4a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f146ddd5fa0 RCX: 00007f146db8eba9
RDX: 0000000000000090 RSI: 0000200000000480 RDI: 0000000000000005
RBP: 00007f146dc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f146ddd6038 R14: 00007f146ddd5fa0 R15: 00007ffc3bff9518
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g9877 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=2848
rcu: rcu_preempt kthread starved for 10502 jiffies! g9877 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26696 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 ret_from_fork_asm+0x1a/0x30
 </TASK>
