rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=810c/1/0x4000000000000000 softirq=130993/131136 fqs=5064
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1075380        369            0
rcu: 	cputime:    32837      19660           45   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=115709 q=2264 ncpus=2)
rcu: rcu_preempt kthread starved for 302 jiffies! g115709 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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  running task     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+0x3fc/0x770
 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: 29395 Comm: syz-executor Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8 #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:native_queued_spin_lock_slowpath+0xaf/0x8e0
Code: 00 00 00 c7 44 24 60 00 00 00 00 0f 1f 44 00 00 4c 8d 74 24 60 49 89 df 49 c1 ef 03 41 bd 01 00 00 00 eb 06 89 44 24 60 f3 90 <48> 89 df be 04 00 00 00 e8 14 ef a8 f6 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90003a877c0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8dfab280 RCX: ffffffff8b7a05ac
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8dfab280
RBP: ffffc90003a878b8 R08: ffffffff8dfab283 R09: 1ffffffff1bf5650
R10: dffffc0000000000 R11: fffffbfff1bf5651 R12: 1ffff92000750f00
R13: 0000000000000001 R14: ffffc90003a87820 R15: 1ffffffff1bf5650
FS:  0000555557fc5500(0000) GS:ffff8881a3c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dc1fffec08 CR3: 0000000109b50000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 queued_spin_lock_slowpath+0x43/0x50
 do_raw_spin_lock+0x21f/0x290
 pgd_free+0x51/0x1e0
 __mmdrop+0xb5/0x460
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec42784e13
Code: Unable to access opcode bytes at 0x7fec42784de9.
RSP: 002b:00007ffe91a25678 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 00000000000072d6 RCX: 00007fec42784e13
RDX: 0000000040000000 RSI: 00007ffe91a2568c RDI: 00000000ffffffff
RBP: 00007ffe91a2568c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
CPU: 0 UID: 0 PID: 29335 Comm: syz.9.7174 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8 #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:unwind_next_frame+0x17df/0x2390
Code: 24 48 01 c6 4c 89 f7 48 89 da e8 4c 0e 00 00 84 c0 0f 84 47 01 00 00 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 20 0f b6 04 28 <84> c0 0f 85 f4 08 00 00 b3 01 8b 84 24 84 00 00 00 41 39 06 4c 8b
RSP: 0018:ffffc90000007418 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff90401e88 RCX: 0000000000000001
RDX: ffffc90000007528 RSI: dffffc0000000000 RDI: ffffc90007187a98
RBP: dffffc0000000000 R08: ffffc90007187a98 R09: 0000000000000000
R10: ffffc90000007538 R11: fffff52000000ea9 R12: ffffc90007187a98
R13: ffffc90000007538 R14: ffffc900000074e8 R15: 1ffffffff20803d1
FS:  00007f42837f76c0(0000) GS:ffff8880b862a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dc1ffeb5a0 CR3: 000000003a860000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 __alloc_skb+0x112/0x2d0
 __netdev_alloc_skb+0x108/0x970
 __ieee80211_beacon_get+0xc06/0x1880
 ieee80211_beacon_get_tim+0xb4/0x2b0
 mac80211_hwsim_beacon_tx+0x3ce/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:pgd_free+0xb9/0x1e0
Code: f7 e8 fb ca 59 03 84 c0 74 72 e8 a2 42 4b 00 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74 05 e8 eb 95 ae 00 4d 8b 7e 08 <4c> 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 d1 95 ae 00
RSP: 0018:ffffc90007187528 EFLAGS: 00000246
RAX: 1ffffd40008b1002 RBX: ffff888116200000 RCX: ffff88810d5d9cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0004588010
RBP: ffffc900071875f0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000e30e94 R12: ffff88810d5da218
R13: dffffc0000000000 R14: ffffea0004588008 R15: ffffea000491d688
 __mmdrop+0xb5/0x460
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:put_cpu_partial+0x171/0x250
Code: e8 b4 9b ae ff 48 c7 44 24 10 00 00 00 00 9c 8f 44 24 10 f7 44 24 10 00 02 00 00 75 3f f7 c5 00 02 00 00 75 44 4d 85 e4 74 0b <48> 89 df 4c 89 e6 e8 94 e9 ff ff 65 48 8b 05 ec bf 86 10 48 3b 44
RSP: 0018:ffffc90007187990 EFLAGS: 00000286
RAX: cc8ce42a75a5ae00 RBX: ffff88801a441dc0 RCX: cc8ce42a75a5ae00
RDX: 0000000000000007 RSI: ffffffff8d9b1618 RDI: ffffffff8be2fd00
RBP: 0000000000000286 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: ffffea0000df1000
R13: 0000000000000000 R14: ffff88810d5d9cc0 R15: ffff88804b03e660
 __slab_free+0x2d5/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_lru_noprof+0x1c6/0x3d0
 __d_alloc+0x36/0x7a0
 d_alloc_pseudo+0x21/0xc0
 alloc_file_pseudo+0xcc/0x210
 anon_inode_getfile+0xc5/0x1a0
 __se_sys_perf_event_open+0xf20/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f428298ebe9
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:00007f42837f7038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f4282bb5fa0 RCX: 00007f428298ebe9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007f4282a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4282bb6038 R14: 00007f4282bb5fa0 R15: 00007ffca01974a8
 </TASK>
