rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P16955/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=58589, q=607 ncpus=2)
task:syz.1.3312      state:R  running task     stack:24960 pid:16955 tgid:16954 ppid:14915  task_flags:0x400140 flags:0x00004002
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 __local_bh_enable_ip+0x13e/0x1c0
 bpf_test_run_xdp_live+0x1868/0x1b10
 bpf_prog_test_run_xdp+0x713/0x1000
 bpf_prog_test_run+0x2c7/0x340
 __sys_bpf+0x562/0x860
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3092d8eba9
RSP: 002b:00007f3093b8f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f3092fd5fa0 RCX: 00007f3092d8eba9
RDX: 0000000000000048 RSI: 0000200000000600 RDI: 000000000000000a
RBP: 00007f3092e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3092fd6038 R14: 00007f3092fd5fa0 R15: 00007ffe0fd0beb8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10460 jiffies! g58589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=22500
rcu: rcu_preempt kthread starved for 10461 jiffies! g58589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26632 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: 16963 Comm: syz.0.3315 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_acquire+0xa4f/0xd20
Code: e5 ff 90 0f 0b 90 90 90 31 c0 48 8b 3c 24 48 83 78 40 00 0f 84 8c 02 00 00 41 8b 46 20 25 ff 1f 00 00 48 0f a3 05 21 f6 0a 12 <73> 10 48 69 c0 c8 00 00 00 48 8d 80 10 73 49 93 eb 40 83 3d 88 85
RSP: 0018:ffffc900001e0750 EFLAGS: 00000003
RAX: 0000000000000067 RBX: 0000000000000000 RCX: 0000000090213bdc
RDX: 00000000001a71fd RSI: 00000000727d5714 RDI: ffff888028c1d640
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff81ada78b
R10: dffffc0000000000 R11: ffffed1026cc4f51 R12: 0000000000000068
R13: ffff888028c1e130 R14: ffff888028c1e130 R15: d6bf87c490213bdc
FS:  00007f93c31a56c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efdc79af440 CR3: 000000003d91c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x120/0x360
 _raw_spin_lock_irqsave+0xa7/0xf0
 hrtimer_try_to_cancel+0x22b/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+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:kernel_text_address+0x34/0xe0
Code: ff 00 00 00 81 0f 93 c0 48 81 ff bc 33 7e 8b 0f 92 c1 bd 01 00 00 00 84 c8 75 0c 48 89 fb e8 c3 33 a7 ff 85 c0 74 0c 89 e8 5b <41> 5e 5d e9 44 ba f0 09 cc 48 c7 c0 80 66 a3 8f 48 c1 e8 03 48 b9
RSP: 0018:ffffc900037a65e0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 00007f93c238eba9 RCX: 7931be489f10f800
RDX: 0000000000000000 RSI: ffffffff8dba9826 RDI: ffff888028c1d640
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81ceb0b6
R10: ffffc900037a6678 R11: ffffffff81ac4d00 R12: ffff888028c1d640
R13: 0000000000000000 R14: 0000000000000001 R15: 1ffff920006f4cce
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kfree+0x18e/0x440
 free_modprobe_argv+0x5c/0x80
 call_usermodehelper_exec+0x14f/0x4b0
 __request_module+0x3c0/0x5e0
 load_settype+0x3a/0xc0
 ip_set_create+0x489/0x1940
 nfnetlink_rcv_msg+0xb4d/0x1130
 netlink_rcv_skb+0x208/0x470
 nfnetlink_rcv+0x26a/0x2520
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f93c238eba9
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:00007f93c31a5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f93c25d5fa0 RCX: 00007f93c238eba9
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000005
RBP: 00007f93c2411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f93c25d6038 R14: 00007f93c25d5fa0 R15: 00007ffe5d6776b8
 </TASK>
