rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P15225
rcu: 	(detected by 0, t=10502 jiffies, g=61805, q=1618 ncpus=2)
task:syz.1.3941      state:R  running task     stack:26384 pid:15225 tgid:15224 ppid:5614   task_flags:0x400140 flags:0x00080010
Call Trace:
 <TASK>
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10457 jiffies! g61805 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=21865
rcu: rcu_preempt kthread starved for 10458 jiffies! g61805 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:27496 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 schedule_timeout+0x152/0x2c0
 rcu_gp_fqs_loop+0x30c/0x11f0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 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: 15225 Comm: syz.1.3941 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x5c/0x70
Code: 00 17 00 00 83 fa 02 75 21 48 8b 91 08 17 00 00 48 8b 32 48 8d 7e 01 8b 89 04 17 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <e9> bf 98 0d 0a cc 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc90000a08d88 EFLAGS: 00000006
RAX: ffffffff81b3db4a RBX: 1ffff11033325e67 RCX: ffff888104f6da00
RDX: 0000000000010000 RSI: 0000000000000000 RDI: ffff88819992f328
RBP: dffffc0000000000 R08: ffff88819992f327 R09: 0000000000000000
R10: ffff88819992f318 R11: ffffed1033325e65 R12: ffffffff9a7ce400
R13: 0000000000000000 R14: ffff88819992f300 R15: ffff88823c628300
FS:  00007fb117ff66c0(0000) GS:ffff8882a8f4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb95f88aff8 CR3: 0000000114260000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __remove_hrtimer+0x1ba/0x3e0
 __hrtimer_run_queues+0x295/0xa10
 hrtimer_interrupt+0x448/0x910
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kasan_check_range+0x9d/0x2c0
Code: 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 3d 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 0f 85 9e 01 00 00 <49> ff c3 48 ff c3 75 ee e9 1d 01 00 00 44 89 dd 83 e5 07 0f 84 b5
RSP: 0018:ffffc9000a7677a8 EFLAGS: 00000246
RAX: ffffffff89e7ae01 RBX: ffffffffffffffff RCX: ffffffff89e7aecb
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888104f6da00
RBP: 0000000003000002 R08: ffff888104f6da07 R09: 1ffff110209edb40
R10: dffffc0000000000 R11: ffffed10209edb40 R12: 0000000000000001
R13: dffffc0000000000 R14: ffffed10209edb41 R15: 1ffff110209edb40
 bpf_test_timer_continue+0x6b/0x320
 bpf_test_run+0x3ce/0x830
 bpf_prog_test_run_xdp+0x7ad/0x11d0
 bpf_prog_test_run+0x2c5/0x340
 __sys_bpf+0xa22/0xd90
 __x64_sys_bpf+0xba/0xd0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb119d9e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb117ff6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb11a025fa0 RCX: 00007fb119d9e019
RDX: 0000000000000050 RSI: 0000200000000300 RDI: 000000000000000a
RBP: 00007fb119e3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb11a026038 R14: 00007fb11a025fa0 R15: 00007ffffe6da3a8
 </TASK>
