rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10495 ticks this GP) idle=ae74/1/0x4000000000000000 softirq=27311/27515 fqs=735
rcu: 	(t=10500 jiffies g=19049 q=1234 ncpus=2)
rcu: rcu_preempt kthread starved for 8963 jiffies! g19049 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: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+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: 7080 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-00207-g815957293639-dirty #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:__kasan_check_read+0x0/0x20
Code: ba 8d 48 89 de e8 70 88 04 ff 31 ed eb cf cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 89 f6 48 8b 0c 24 31 d2 e9 ef e4 ff ff 66 66 66 66 66
RSP: 0018:ffffc9000341f6b8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8dfab280 RCX: ffffffff8b7c8e5c
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8dfab280
RBP: ffffc9000341f7b8 R08: ffffffff8dfab283 R09: 1ffffffff1bf5650
R10: dffffc0000000000 R11: fffffbfff1bf5651 R12: 1ffff92000683ee0
R13: 0000000000000001 R14: ffffc9000341f720 R15: 1ffffffff1bf5650
FS:  00005555870c5500(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f85ce68e9dd CR3: 000000003853e000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 native_queued_spin_lock_slowpath+0xbc/0x8e0
 queued_spin_lock_slowpath+0x43/0x50
 do_raw_spin_lock+0x21f/0x290
 pgd_free+0x51/0x1e0
 __mmdrop+0xb5/0x580
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 schedule+0x165/0x360
 do_wait+0x299/0x520
 kernel_wait4+0x1af/0x280
 __x64_sys_wait4+0x133/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7b1d184e57
Code: 89 7c 24 10 48 89 4c 24 18 e8 45 1b 03 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 95 1b 03 00 8b 44
RSP: 002b:00007fff7ea41120 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 000000000000002c RCX: 00007f7b1d184e57
RDX: 0000000040000000 RSI: 00007fff7ea4118c RDI: 00000000ffffffff
RBP: 00007fff7ea4118c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000009
R13: 00005555870d8590 R14: 00000000000331b9 R15: 00007fff7ea411e0
 </TASK>
CPU: 0 UID: 0 PID: 7438 Comm: syz.7.329 Not tainted 6.17.0-rc1-syzkaller-00207-g815957293639-dirty #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:__rcu_read_lock+0x0/0x60
Code: f7 e8 54 fe 7b 00 e9 cc fa ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 53 65 48 8b 1c 25 08 50 a0 92 48 81 c3 44 04 00 00 48
RSP: 0018:ffffc90000006bf0 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffffff8184ecb6 RCX: 3aefa55e13418100
RDX: dffffc0000000000 RSI: ffffffff8184ecb6 RDI: ffffc90000006cc8
RBP: dffffc0000000000 R08: ffffc90000006d90 R09: 000000000000000e
R10: ffffc90000006d18 R11: ffffffff81ac3870 R12: 1ffff92000000d99
R13: ffffc90000006d00 R14: ffffc90000006cc8 R15: ffffc90000007e40
FS:  00007f545b5dd6c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000026f000 CR3: 000000003c018000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x9e/0x2390
 arch_stack_walk+0x11c/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
 ieee80211_inform_bss+0xbd9/0x10a0
 cfg80211_inform_single_bss_data+0xd05/0x1ac0
 cfg80211_inform_bss_data+0x1fb/0x3b30
 cfg80211_inform_bss_frame_data+0x3d7/0x730
 ieee80211_bss_info_update+0x746/0x9e0
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x201c/0x2a90
 ieee80211_rx_napi+0x1a8/0x3d0
 ieee80211_handle_queued_frames+0xe8/0x1f0
 tasklet_action_common+0x36c/0x580
 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+0x106/0x1e0
Code: 03 42 80 3c 28 00 74 08 4c 89 e7 e8 e4 b7 ae 00 4d 89 3c 24 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 ca b7 ae 00 <49> 89 2f eb 05 e8 80 4d 4b 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00
RSP: 0018:ffffc90003066f68 EFLAGS: 00000246
RAX: 1ffffd40001e00c1 RBX: ffff88801fcf2000 RCX: 0000000000080000
RDX: ffffc90022432000 RSI: 0000000000005013 RDI: ffffea00007f3c90
RBP: ffffea0000edbd08 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200060cddc R12: ffffea0000edbd10
R13: dffffc0000000000 R14: ffffea00007f3c88 R15: ffffea0000f00608
 __mmdrop+0xb5/0x580
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:put_cpu_partial+0x1b4/0x250
Code: 85 b5 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 18 29 61 09 f7 c5 00 02 00 00 74 bc fb 4d 85 e4 <75> bb eb c4 90 e8 a2 bc ab 02 85 c0 74 22 83 3d 4b f5 8a 0d 00 75
RSP: 0018:ffffc900030673d8 EFLAGS: 00000246
RAX: 3aefa55e13418100 RBX: ffff88801a442140 RCX: 3aefa55e13418100
RDX: 0000000000000007 RSI: ffffffff8d9b731b RDI: ffffffff8be33400
RBP: 0000000000000286 R08: ffffffff8fa38337 R09: 1ffffffff1f47066
R10: dffffc0000000000 R11: fffffbfff1f47067 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888108125640 R15: ffff88804b03e700
 __slab_free+0x2d5/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_noprof+0x224/0x4f0
 tomoyo_realpath_from_path+0xe3/0x5d0
 tomoyo_check_open_permission+0x1c1/0x3b0
 security_file_open+0xb1/0x270
 do_dentry_open+0x384/0x13f0
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f545a78ebe9
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:00007f545b5dd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f545a9b5fa0 RCX: 00007f545a78ebe9
RDX: 0000000000100002 RSI: 0000200000000580 RDI: ffffffffffffff9c
RBP: 00007f545a811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f545a9b6038 R14: 00007f545a9b5fa0 R15: 00007ffea60b28d8
 </TASK>
