rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10398 ticks this GP) idle=ea5/1/0x4000000000000000 softirq=249645/249646 fqs=0 
	(t=10500 jiffies g=486953 q=59)
rcu: rcu_preempt kthread starved for 10500 jiffies! g486953 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:28696 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4940 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6287
 schedule+0xd3/0x270 kernel/sched/core.c:6366
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 rcu_gp_fqs_loop+0x186/0x800 kernel/rcu/tree.c:1957
 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2130
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 4329 Comm: syz-executor.1 Not tainted 5.15.0-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:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:481
 print_cpu_stall kernel/rcu/tree_stall.h:625 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3880 [inline]
 rcu_sched_clock_irq.cold+0x98/0x746 kernel/rcu/tree.c:2599
 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:mac80211_hwsim_tx_frame_no_nl.isra.0+0xbd3/0x1330 drivers/net/wireless/mac80211_hwsim.c:1580
Code: bb 20 3e 00 00 4c 8b 54 24 08 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 55 07 00 00 48 83 83 20 3e 00 00 01 48 8d bb 30 3e 00 00 <48> 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 e7 06 00 00 49 8d 7a 70 4c
RSP: 0018:ffffc90000007ba0 EFLAGS: 00000216
RAX: 1ffff11015be3e18 RBX: ffff8880adf1b2a0 RCX: 0000000000000000
RDX: 0000000000000030 RSI: ffffc90000007c80 RDI: ffff8880adf1f0d0
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88805517b697
R10: ffff88805517b640 R11: 0000000000000000 R12: ffff88805517b500
R13: ffff8880288d34d0 R14: ffff8880288d32a0 R15: 0000000000000000
 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+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 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>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5593
Code: 92 a6 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000f5ff608 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92001ebfec3 RCX: ffffffff815b148f
RDX: 1ffff11007e77bee RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8fcfb967
R10: fffffbfff1f9f72c R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880b9c2cb60 R15: 0000000000000000
 local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
 lru_cache_add+0x332/0xa70 mm/swap.c:450
 do_anonymous_page mm/memory.c:3808 [inline]
 handle_pte_fault mm/memory.c:4557 [inline]
 __handle_mm_fault+0x35e6/0x5320 mm/memory.c:4694
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4792
 faultin_page mm/gup.c:937 [inline]
 __get_user_pages+0x503/0xf80 mm/gup.c:1158
 __get_user_pages_locked mm/gup.c:1343 [inline]
 __get_user_pages_remote+0x18f/0x840 mm/gup.c:1852
 pin_user_pages_remote+0x63/0x90 mm/gup.c:2927
 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline]
 process_vm_rw_core.constprop.0+0x445/0x990 mm/process_vm_access.c:215
 process_vm_rw+0x29c/0x300 mm/process_vm_access.c:283
 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline]
 __x64_sys_process_vm_writev+0xdf/0x1b0 mm/process_vm_access.c:298
 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: 0033:0x7fb786ca4709
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb78421b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007fb786da8f60 RCX: 00007fb786ca4709
RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000711
RBP: 00007fb786cfecb4 R08: 0000000000000027 R09: 0000000000000000
R10: 0000000020121000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7872dcb2f R14: 00007fb78421b300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 4329 Comm: syz-executor.1 Not tainted 5.15.0-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:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 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:3880 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2599
 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:mac80211_hwsim_tx_frame_no_nl.isra.0+0xbd3/0x1330 drivers/net/wireless/mac80211_hwsim.c:1580
Code: bb 20 3e 00 00 4c 8b 54 24 08 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 55 07 00 00 48 83 83 20 3e 00 00 01 48 8d bb 30 3e 00 00 <48> 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 e7 06 00 00 49 8d 7a 70 4c
RSP: 0018:ffffc90000007ba0 EFLAGS: 00000216
RAX: 1ffff11015be3e18 RBX: ffff8880adf1b2a0 RCX: 0000000000000000
RDX: 0000000000000030 RSI: ffffc90000007c80 RDI: ffff8880adf1f0d0
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88805517b697
R10: ffff88805517b640 R11: 0000000000000000 R12: ffff88805517b500
R13: ffff8880288d34d0 R14: ffff8880288d32a0 R15: 0000000000000000
 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+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 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>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5593
Code: 92 a6 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000f5ff608 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92001ebfec3 RCX: ffffffff815b148f
RDX: 1ffff11007e77bee RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8fcfb967
R10: fffffbfff1f9f72c R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880b9c2cb60 R15: 0000000000000000
 local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
 lru_cache_add+0x332/0xa70 mm/swap.c:450
 do_anonymous_page mm/memory.c:3808 [inline]
 handle_pte_fault mm/memory.c:4557 [inline]
 __handle_mm_fault+0x35e6/0x5320 mm/memory.c:4694
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4792
 faultin_page mm/gup.c:937 [inline]
 __get_user_pages+0x503/0xf80 mm/gup.c:1158
 __get_user_pages_locked mm/gup.c:1343 [inline]
 __get_user_pages_remote+0x18f/0x840 mm/gup.c:1852
 pin_user_pages_remote+0x63/0x90 mm/gup.c:2927
 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline]
 process_vm_rw_core.constprop.0+0x445/0x990 mm/process_vm_access.c:215
 process_vm_rw+0x29c/0x300 mm/process_vm_access.c:283
 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline]
 __x64_sys_process_vm_writev+0xdf/0x1b0 mm/process_vm_access.c:298
 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: 0033:0x7fb786ca4709
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb78421b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007fb786da8f60 RCX: 00007fb786ca4709
RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000711
RBP: 00007fb786cfecb4 R08: 0000000000000027 R09: 0000000000000000
R10: 0000000020121000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7872dcb2f R14: 00007fb78421b300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	bb 20 3e 00 00       	mov    $0x3e20,%ebx
   5:	4c 8b 54 24 08       	mov    0x8(%rsp),%r10
   a:	48 89 f8             	mov    %rdi,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  15:	0f 85 55 07 00 00    	jne    0x770
  1b:	48 83 83 20 3e 00 00 	addq   $0x1,0x3e20(%rbx)
  22:	01
  23:	48 8d bb 30 3e 00 00 	lea    0x3e30(%rbx),%rdi
* 2a:	48 89 f8             	mov    %rdi,%rax <-- trapping instruction
  2d:	48 c1 e8 03          	shr    $0x3,%rax
  31:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  35:	0f 85 e7 06 00 00    	jne    0x722
  3b:	49 8d 7a 70          	lea    0x70(%r10),%rdi
  3f:	4c                   	rex.WR