rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=24593, q=155 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294963065-4294952563), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g24593 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=7436
rcu: rcu_preempt kthread starved for 10502 jiffies! g24593 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->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 stack:27160 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+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </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 UID: 0 PID: 7962 Comm: syz.3.520 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:lock_release+0xaf/0x3e0
Code: 0a 00 00 00 0f 85 1e 02 00 00 49 81 3e 20 b3 64 93 0f 84 11 02 00 00 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 48 8b 5c 24 20 <fa> 48 c7 c7 79 ea 9c 8d e8 24 9d dd 09 65 ff 05 cd 9a 03 11 c7 44
RSP: 0018:ffffc900001e0818 EFLAGS: 00000087
RAX: 0000000000000000 RBX: 0000000000000087 RCX: 7045c0fb13389800
RDX: ffffffff81adad5e RSI: ffffffff8be343e0 RDI: ffffffff8be343a0
RBP: ffffc900001e0918 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003c100 R12: dffffc0000000000
R13: ffffffff81adad5e R14: ffff888136627a98 R15: ffff8880203a3980
FS:  00007f62158396c0(0000) GS:ffff8881a3c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c32535fc8 CR3: 000000012226e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 _raw_spin_unlock_irqrestore+0x70/0x110
 hrtimer_try_to_cancel+0x3be/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3c5/0x550
 __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:smp_call_function_many_cond+0xfbd/0x12d0
Code: 0b 00 4d 89 fe 48 85 db 75 15 e8 ee 5c 0b 00 44 84 74 24 34 0f 85 7c fc ff ff e9 98 fe ff ff e8 d9 5c 0b 00 fb 44 84 74 24 34 <0f> 84 87 fe ff ff e9 61 fc ff ff e8 c3 5c 0b 00 44 84 74 24 34 0f
RSP: 0018:ffffc900019bf1c0 EFLAGS: 00000202
RAX: ffffffff81b468c7 RBX: 0000000000000200 RCX: ffff8880203a3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900019bf340 R08: ffffffff8fa3b537 R09: 1ffffffff1f476a6
R10: dffffc0000000000 R11: fffffbfff1f476a7 R12: ffff88813663bdc0
R13: dffffc0000000000 R14: 1ffff11009608401 R15: 1ffff11009608401
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f9/0x1130
 __static_call_transform+0x4eb/0x750
 arch_static_call_transform+0x98/0xc0
 __static_call_update+0x3c3/0x5d0
 bpf_dispatcher_change_prog+0xacd/0xc90
 dev_xdp_install+0x4c5/0x5d0
 dev_xdp_attach+0xbca/0x1040
 bpf_xdp_link_attach+0x471/0x8f0
 link_create+0x4d8/0x850
 __sys_bpf+0x6be/0x860
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f621498ec29
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:00007f6215839038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f6214bd5fa0 RCX: 00007f621498ec29
RDX: 0000000000000040 RSI: 0000200000000240 RDI: 000000000000001c
RBP: 00007f6214a11e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6214bd6038 R14: 00007f6214bd5fa0 R15: 00007ffdf9f62b58
 </TASK>
