rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10447 ticks this GP) idle=ef9/1/0x4000000000000000 softirq=192271/192416 fqs=3069 
	(t=10500 jiffies g=371781 q=1946)
NMI backtrace for cpu 0
CPU: 0 PID: 411 Comm: syz-executor.4 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:163 [inline]
RIP: 0010:unwind_next_frame+0x23b/0x1ce0 arch/x86/kernel/unwind_orc.c:443
Code: 8d 43 ff 39 c6 0f 83 c3 13 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 a4 a8 a9 8e 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 30
RSP: 0018:ffffc90000007688 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: 1ffff92000000ed9 RCX: 0000000000000000
RDX: 0000000000088002 RSI: 0000000000088002 RDI: ffffffff8ecba8ac
RBP: 0000000000000002 R08: ffffffff8b9fa220 R09: 0000000000000001
R10: fffff52000000ef7 R11: 000000000008808a R12: ffffc900000077a8
R13: ffffc90000007795 R14: ffffc90000007760 R15: ffffffff8980029a
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x85/0xb0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:259 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc_node mm/slab.c:3261 [inline]
 kmem_cache_alloc_node+0x2ea/0x590 mm/slab.c:3599
 __alloc_skb+0x215/0x340 net/core/skbuff.c:414
 skb_copy+0x137/0x2f0 net/core/skbuff.c:1586
 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 drivers/net/wireless/mac80211_hwsim.c:1565
 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784
 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838
 __iterate_interfaces+0x1e5/0x560 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1861
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 81 c0 45 00 5d be 03 00 00 00 e9 76 b8 63 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 19 9d 8b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90005247080 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90014ec7000
RDX: 0000000000040000 RSI: ffffffff815e0a6c RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff74a07
R10: ffffffff815e0a62 R11: 0000000000000000 R12: ffffffff84d3dc10
R13: 0000000000000200 R14: ffffc900052470e0 R15: dffffc0000000000
 console_unlock+0x6c2/0xb70 kernel/printk/printk.c:2716
 vprintk_emit+0x198/0x4f0 kernel/printk/printk.c:2245
 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
 _printk+0xba/0xed kernel/printk/printk.c:2266
 show_free_areas.cold+0x4aa/0x9b4 mm/page_alloc.c:5986
 show_mem+0x31/0x191 lib/show_mem.c:17
 warn_alloc_show_mem mm/page_alloc.c:4198 [inline]
 warn_alloc.cold+0x10e/0x17a mm/page_alloc.c:4221
 __vmalloc_area_node mm/vmalloc.c:2964 [inline]
 __vmalloc_node_range+0x883/0xab0 mm/vmalloc.c:3065
 __vmalloc_node mm/vmalloc.c:3114 [inline]
 vzalloc+0x67/0x80 mm/vmalloc.c:3184
 n_tty_open+0x16/0x170 drivers/tty/n_tty.c:1848
 tty_ldisc_open+0x9b/0x110 drivers/tty/tty_ldisc.c:449
 tty_ldisc_setup+0x43/0x100 drivers/tty/tty_ldisc.c:766
 tty_init_dev.part.0+0x1f4/0x610 drivers/tty/tty_io.c:1453
 tty_init_dev include/linux/err.h:36 [inline]
 tty_open_by_driver drivers/tty/tty_io.c:2098 [inline]
 tty_open+0xb16/0x1000 drivers/tty/tty_io.c:2146
 chrdev_open+0x266/0x770 fs/char_dev.c:414
 do_dentry_open+0x4c8/0x1250 fs/open.c:822
 do_open fs/namei.c:3426 [inline]
 path_openat+0x1cad/0x2750 fs/namei.c:3559
 do_filp_open+0x1aa/0x400 fs/namei.c:3586
 do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_openat fs/open.c:1244 [inline]
 __se_sys_openat fs/open.c:1239 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f99177dfa04
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f9914da1cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f991793ff60 RCX: 00007f99177dfa04
RDX: 0000000000000002 RSI: 00007f9914da1d60 RDI: 00000000ffffff9c
RBP: 00007f9914da1d60 R08: 0000000000000000 R09: 000000000000000e
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007ffccb2c7d4f R14: 00007f9914da2300 R15: 0000000000022000
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 411 Comm: syz-executor.4 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline]
RIP: 0010:lock_release+0x3c8/0x720 kernel/locking/lockdep.c:5659
Code: 2b 44 24 40 45 39 87 58 0a 00 00 0f 85 29 02 00 00 48 c7 c7 c0 f9 ab 89 e8 55 0a e8 07 b8 ff ff ff ff 65 0f c1 05 58 95 a6 7e <83> f8 01 0f 85 8d 01 00 00 9c 58 f6 c4 02 0f 85 78 01 00 00 48 f7
RSP: 0018:ffffc90000007260 EFLAGS: 00000057
RAX: 0000000000000001 RBX: cd165870ae833244 RCX: ffffc900000072b0
RDX: 1ffff110038b9972 RSI: 0000000000010105 RDI: 0000000000000000
RBP: 1ffff92000000e4e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000007
R13: 0000000000000008 R14: ffff88801c5ccb98 R15: ffff88801c5cc140
FS:  00007f9914da2700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdcbab1000 CR3: 000000014dee9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194
 debug_object_activate+0x287/0x3e0 lib/debugobjects.c:689
 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
 debug_activate kernel/time/hrtimer.c:475 [inline]
 enqueue_hrtimer+0x27/0x3e0 kernel/time/hrtimer.c:1084
 __run_hrtimer kernel/time/hrtimer.c:1702 [inline]
 __hrtimer_run_queues+0xb02/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:deref_stack_reg+0xe/0x150 arch/x86/kernel/unwind_orc.c:351
Code: 89 00 48 8b 14 24 e9 48 ff ff ff 48 89 0c 24 e8 c8 1f 89 00 48 8b 0c 24 eb 9d 66 90 48 b8 00 00 00 00 00 fc ff df 41 55 41 54 <49> 89 fc 55 48 89 f5 53 48 89 d3 48 89 fa 48 c1 ea 03 48 83 ec 08
RSP: 0018:ffffc900000076d0 EFLAGS: 00000287
RAX: dffffc0000000000 RBX: 1ffff92000000ee5 RCX: 0000000000000000
RDX: ffffc90000007800 RSI: ffffc90005247248 RDI: ffffc900000077c0
RBP: 0000000000000001 R08: ffffffff8e0f343e R09: 0000000000000001
R10: fffff52000000f03 R11: 000000000008808a R12: ffffc90005247260
R13: ffffc900000077f5 R14: ffffc900000077c0 R15: ffffc900000077f4
 unwind_next_frame+0x13f9/0x1ce0 arch/x86/kernel/unwind_orc.c:600
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 ____kasan_kmalloc mm/kasan/common.c:472 [inline]
 __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0xde/0x340 net/core/skbuff.c:426
 skb_copy+0x137/0x2f0 net/core/skbuff.c:1586
 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 drivers/net/wireless/mac80211_hwsim.c:1565
 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784
 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838
 __iterate_interfaces+0x1e5/0x560 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1861
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__sanitizer_cov_trace_pc+0x43/0x60 kernel/kcov.c:206
Code: 70 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 83 f8 02 75 20 48 8b 8a 88 15 00 00 <8b> 92 84 15 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1
RSP: 0018:ffffc90005246bd8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 00000000ffffffff RCX: ffffc90014ec7000
RDX: ffff88801c5cc140 RSI: ffffffff83ffda66 RDI: 0000000000000003
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff83ffd9c9 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000006 R14: ffffc90085246fdf R15: ffffc90005246fe7
 number+0x586/0xae0 lib/vsprintf.c:538
 vsnprintf+0xf09/0x14f0 lib/vsprintf.c:2871
 sprintf+0xc0/0x100 lib/vsprintf.c:3007
 print_time kernel/printk/printk.c:1261 [inline]
 info_print_prefix+0x248/0x340 kernel/printk/printk.c:1287
 record_print_text+0x14d/0x3e0 kernel/printk/printk.c:1336
 console_unlock+0x2d8/0xb70 kernel/printk/printk.c:2692
 vprintk_emit+0x198/0x4f0 kernel/printk/printk.c:2245
 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
 _printk+0xba/0xed kernel/printk/printk.c:2266
 show_free_areas.cold+0x4aa/0x9b4 mm/page_alloc.c:5986
 show_mem+0x31/0x191 lib/show_mem.c:17
 warn_alloc_show_mem mm/page_alloc.c:4198 [inline]
 warn_alloc.cold+0x10e/0x17a mm/page_alloc.c:4221
 __vmalloc_area_node mm/vmalloc.c:2964 [inline]
 __vmalloc_node_range+0x883/0xab0 mm/vmalloc.c:3065
 __vmalloc_node mm/vmalloc.c:3114 [inline]
 vzalloc+0x67/0x80 mm/vmalloc.c:3184
 n_tty_open+0x16/0x170 drivers/tty/n_tty.c:1848
 tty_ldisc_open+0x9b/0x110 drivers/tty/tty_ldisc.c:449
 tty_ldisc_setup+0x43/0x100 drivers/tty/tty_ldisc.c:766
 tty_init_dev.part.0+0x1f4/0x610 drivers/tty/tty_io.c:1453
 tty_init_dev include/linux/err.h:36 [inline]
 tty_open_by_driver drivers/tty/tty_io.c:2098 [inline]
 tty_open+0xb16/0x1000 drivers/tty/tty_io.c:2146
 chrdev_open+0x266/0x770 fs/char_dev.c:414
 do_dentry_open+0x4c8/0x1250 fs/open.c:822
 do_open fs/namei.c:3426 [inline]
 path_openat+0x1cad/0x2750 fs/namei.c:3559
 do_filp_open+0x1aa/0x400 fs/namei.c:3586
 do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_openat fs/open.c:1244 [inline]
 __se_sys_openat fs/open.c:1239 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f99177dfa04
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f9914da1cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f991793ff60 RCX: 00007f99177dfa04
RDX: 0000000000000002 RSI: 00007f9914da1d60 RDI: 00000000ffffff9c
RBP: 00007f9914da1d60 R08: 0000000000000000 R09: 000000000000000e
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007ffccb2c7d4f R14: 00007f9914da2300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	8d 43 ff             	lea    -0x1(%rbx),%eax
   3:	39 c6                	cmp    %eax,%esi
   5:	0f 83 c3 13 00 00    	jae    0x13ce
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df
  15:	89 f2                	mov    %esi,%edx
  17:	48 8d 3c 95 a4 a8 a9 	lea    -0x7156575c(,%rdx,4),%rdi
  1e:	8e
  1f:	48 89 f9             	mov    %rdi,%rcx
  22:	48 c1 e9 03          	shr    $0x3,%rcx
  26:	0f b6 0c 01          	movzbl (%rcx,%rax,1),%ecx
* 2a:	48 89 f8             	mov    %rdi,%rax <-- trapping instruction
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 03             	add    $0x3,%eax
  33:	38 c8                	cmp    %cl,%al
  35:	7c 27                	jl     0x5e
  37:	84 c9                	test   %cl,%cl
  39:	74 23                	je     0x5e
  3b:	48 89 54 24 30       	mov    %rdx,0x30(%rsp)