rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7177/1:b.el
rcu: 	(detected by 1, t=10502 jiffies, g=15433, q=458 ncpus=2)
task:syz.0.276       state:R  running task     stack:24888 pid:7177  tgid:7176  ppid:5851   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+0x581/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe2ffb8eba9
RSP: 002b:00007fe3009e8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fe2ffdd5fa0 RCX: 00007fe2ffb8eba9
RDX: 0000000000000048 RSI: 0000200000000600 RDI: 000000000000000a
RBP: 00007fe2ffc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe2ffdd6038 R14: 00007fe2ffdd5fa0 R15: 00007ffdba1140a8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10495 jiffies! g15433 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=6510
rcu: rcu_preempt kthread starved for 10496 jiffies! g15433 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: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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7181 Comm: syz.3.277 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+0x3f/0xd20
Code: 25 08 d0 a0 92 45 31 ff 83 3d 0c 66 06 0e 00 0f 84 7e 0c 00 00 48 8b 03 48 3d 20 93 64 93 0f 84 6f 0c 00 00 41 89 cc 41 89 d6 <8b> 0d ab 3a 63 0c 85 c9 44 0f 44 c1 31 c9 48 3d 10 93 64 93 41 0f
RSP: 0018:ffffc90000006d90 EFLAGS: 00000087
RAX: ffff88804b027a98 RBX: ffff88804b027a98 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801f929cc0
RBP: ffffffff81ada78b R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: ffffed1009604f51 R12: 0000000000000000
R13: ffff88804b027a98 R14: 0000000000000000 R15: 0000000000000000
FS:  00007faa1a5b86c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557b5eb808 CR3: 000000010959a000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 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+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:is_bpf_text_address+0x0/0x2b0
Code: 7c 54 00 be 00 02 00 00 bf 02 00 00 00 4c 89 ea e8 b5 40 5d ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 49 89 fe e8
RSP: 0018:ffffc90000007710 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007faa1978eba9 RCX: 15d00bbcc4e02c00
RDX: 0000000000000002 RSI: ffffffff8dba9858 RDI: 00007faa1978eba9
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff81aac84d
R10: ffffc900000077b8 R11: ffffffff81ac4d00 R12: ffff88801f929cc0
R13: 0000000000000000 R14: 0000000000000001 R15: 1ffff92000000ef6
 kernel_text_address+0xa5/0xe0
 __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
 kmem_cache_free+0x18f/0x400
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__local_bh_enable_ip+0x135/0x1c0
Code: 8b e8 6f 78 f5 09 65 66 8b 05 1f d6 1b 11 66 85 c0 75 5a bf 01 00 00 00 e8 78 15 0b 00 e8 93 70 42 00 fb 65 8b 05 fb d5 1b 11 <85> c0 75 05 e8 d2 cc ae ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc90006857c00 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000201 RCX: 15d00bbcc4e02c00
RDX: 0000000000000006 RSI: ffffffff8d9ba186 RDI: ffffffff8be33e00
RBP: ffffc90006857c98 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: ffffffff81d16707
R13: 000000000000102d R14: dffffc0000000000 R15: 1ffff92000d0af80
 bpf_map_alloc_id+0x87/0xe0
 map_create+0x1056/0x14d0
 __sys_bpf+0x60f/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faa1978eba9
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:00007faa1a5b8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007faa199d5fa0 RCX: 00007faa1978eba9
RDX: 0000000000000050 RSI: 0000200000001b80 RDI: 0000000000000000
RBP: 00007faa19811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa199d6038 R14: 00007faa199d5fa0 R15: 00007ffd5b2d5258
 </TASK>
