rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=8b0c/1/0x4000000000000000 softirq=15323/15338 fqs=4928
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   978826         48            0
rcu: 	cputime:    33846      18638           50   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=7653 q=3818 ncpus=2)
CPU: 0 UID: 0 PID: 6283 Comm: syz.0.174 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-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:lock_acquire+0x175/0x360
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 cb de 01 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90000007378 EFLAGS: 00000206
RAX: 34da9348684ac700 RBX: 0000000000000000 RCX: 34da9348684ac700
RDX: 0000000000000000 RSI: ffffffff8db863e2 RDI: ffffffff8be29f80
RBP: ffffffff8172aae5 R08: 0000000000000000 R09: ffffffff8172aae5
R10: ffffc90000007538 R11: ffffffff81acf520 R12: 0000000000000002
R13: ffffffff8e13f0a0 R14: 0000000000000000 R15: 0000000000000246
FS:  00007fc6c85416c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30208ff8 CR3: 00000000230e6000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x2390
 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+0xeeb/0x17b0
 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:__schedule+0x0/0x4d00
Code: b3 f6 45 89 f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff 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 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc90007b07778 EFLAGS: 00000282
RAX: 34da9348684ac700 RBX: 0000000000000000 RCX: 34da9348684ac700
RDX: 0000000000000007 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90007b07830 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000f60ef0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_pc+0x3c/0x70
Code: 8b 15 58 f2 df 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 74 2c 8b 91 18 16 00 00 83 fa 02 75 21 <48> 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c 16 00 00 48 39
RSP: 0018:ffffc90007b078f8 EFLAGS: 00000246
RAX: ffffffff8b6ad5fe RBX: 00000000fffffffe RCX: ffff888022f21cc0
RDX: 0000000000000002 RSI: 0000000000000e30 RDI: 0000000000000e31
RBP: 0000000000000006 R08: ffff888022f21cc0 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000002 R12: ffffffff8bdbc220
R13: 0000000000000001 R14: 0000000000000005 R15: 000000000000006f
 string+0x21e/0x2b0
 vsnprintf+0x739/0xf00
 tomoyo_supervisor+0x133/0x1480
 tomoyo_path_number_perm+0x438/0x5a0
 security_file_ioctl+0xcb/0x2d0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc6c778eb69
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:00007fc6c8541038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc6c79b5fa0 RCX: 00007fc6c778eb69
RDX: ffffffffffffffff RSI: 0000000040042408 RDI: 000000000000000d
RBP: 00007fc6c7811df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc6c79b5fa0 R15: 00007ffe3f44a488
 </TASK>
sched: DL replenish lagged too much
