rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=fcd/1/0x4000000000000000 softirq=118259/118259 fqs=0 
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4161/1:b..l
	(detected by 0, t=10505 jiffies, g=184389, q=12)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4891 Comm: syz-executor.2 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1184 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x21/0x140 kernel/rcu/tree.c:1177
Code: 0f 1f 84 00 00 00 00 00 90 65 8b 15 69 e8 9e 7e 81 e2 00 00 f0 00 b8 01 00 00 00 75 0a 8b 15 de 5b 55 0c 85 d2 75 01 c3 55 53 <65> ff 05 48 e8 9e 7e e8 e3 92 09 08 48 c7 c3 40 af 03 00 83 f8 07
RSP: 0018:ffffc900003f8ca8 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 1ffff9200007f19c RCX: ffffffff815ce328
RDX: 0000000000000001 RSI: 0000000000010004 RDI: ffffffff8b7bc8e8
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8db8e257
R10: fffffbfff1b71c4a R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888019e42b00 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000140 CR3: 0000000073992000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
 rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5612
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 advance_sched+0x53/0x9a0 net/sched/sch_taprio.c:715
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5609
Code: 95 a5 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:ffffc900149b75e0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002936ebe RCX: 6976a289465643b8
RDX: 1ffff110090d7553 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff90072907
R10: fffffbfff200e520 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bd7f5e0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
 rcu_read_lock include/linux/rcupdate.h:694 [inline]
 folio_memcg_lock+0x3a/0x6c0 mm/memcontrol.c:2034
 page_remove_rmap+0x27/0x1510 mm/rmap.c:1377
 zap_pte_range mm/memory.c:1389 [inline]
 zap_pmd_range mm/memory.c:1497 [inline]
 zap_pud_range mm/memory.c:1526 [inline]
 zap_p4d_range mm/memory.c:1547 [inline]
 unmap_page_range+0xffa/0x3fa0 mm/memory.c:1568
 unmap_single_vma+0x198/0x310 mm/memory.c:1613
 unmap_vmas+0x16b/0x2f0 mm/memory.c:1645
 exit_mmap+0x1c4/0x4a0 mm/mmap.c:3140
 __mmput+0x122/0x4b0 kernel/fork.c:1184
 mmput+0x56/0x60 kernel/fork.c:1205
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0xa12/0x2a00 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x22df/0x24c0 kernel/signal.c:2864
 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0044a890e9
Code: Unable to access opcode bytes at RIP 0x7f0044a890bf.
RSP: 002b:00007f0045cc0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0044b9bf68 RCX: 00007f0044a890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0044b9bf68
RBP: 00007f0044b9bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0044b9bf6c
R13: 00007ffd3aee822f R14: 00007f0045cc0300 R15: 0000000000022000
 </TASK>
task:kworker/u4:12   state:R  running task     stack:26440 pid: 4161 ppid:     2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5073 [inline]
 __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
 preempt_schedule_notrace+0x5b/0xd0 kernel/sched/core.c:6646
 preempt_schedule_notrace_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:36
 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:816 [inline]
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x458/0x510 kernel/locking/lockdep.c:5612
 rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
 rcu_read_lock include/linux/rcupdate.h:694 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10504 jiffies! g184389 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=110826
rcu: rcu_preempt kthread starved for 10505 jiffies! g184389 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28368 pid:   16 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5073 [inline]
 __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
 schedule+0xd2/0x1f0 kernel/sched/core.c:6460
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1884
 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1971
 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2144
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </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 PID: 4891 Comm: syz-executor.2 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preemption_disabled+0x45/0x170 lib/smp_processor_id.c:56
Code: 65 8b 1d ae 56 95 76 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00 85 db 74 11 0f 1f 44 00 00 44 89 e0 5b 5d 41 5c 41 5d 41 5e <c3> 0f 1f 44 00 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de 0f 1f 44
RSP: 0018:ffffc900003f8bf0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000005 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000010004 RDI: 0000000000000000
RBP: ffffffff8bd7f520 R08: 0000000000000000 R09: ffffffff8db8e257
R10: fffffbfff1b71c4a R11: 0000000000000001 R12: ffff8880486ba040
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880486bab40
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000140 CR3: 0000000073992000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline]
 lock_is_held_type+0xd7/0x140 kernel/locking/lockdep.c:5685
 lock_is_held include/linux/lockdep.h:283 [inline]
 rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
 trace_lock_release include/trace/events/lock.h:58 [inline]
 lock_release+0x522/0x720 kernel/locking/lockdep.c:5652
 __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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5609
Code: 95 a5 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:ffffc900149b75e0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002936ebe RCX: 6976a289465643b8
RDX: 1ffff110090d7553 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff90072907
R10: fffffbfff200e520 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bd7f5e0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
 rcu_read_lock include/linux/rcupdate.h:694 [inline]
 folio_memcg_lock+0x3a/0x6c0 mm/memcontrol.c:2034
 page_remove_rmap+0x27/0x1510 mm/rmap.c:1377
 zap_pte_range mm/memory.c:1389 [inline]
 zap_pmd_range mm/memory.c:1497 [inline]
 zap_pud_range mm/memory.c:1526 [inline]
 zap_p4d_range mm/memory.c:1547 [inline]
 unmap_page_range+0xffa/0x3fa0 mm/memory.c:1568
 unmap_single_vma+0x198/0x310 mm/memory.c:1613
 unmap_vmas+0x16b/0x2f0 mm/memory.c:1645
 exit_mmap+0x1c4/0x4a0 mm/mmap.c:3140
 __mmput+0x122/0x4b0 kernel/fork.c:1184
 mmput+0x56/0x60 kernel/fork.c:1205
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0xa12/0x2a00 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x22df/0x24c0 kernel/signal.c:2864
 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0044a890e9
Code: Unable to access opcode bytes at RIP 0x7f0044a890bf.
RSP: 002b:00007f0045cc0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0044b9bf68 RCX: 00007f0044a890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0044b9bf68
RBP: 00007f0044b9bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0044b9bf6c
R13: 00007ffd3aee822f R14: 00007f0045cc0300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00
   8:	90                   	nop
   9:	65 8b 15 69 e8 9e 7e 	mov    %gs:0x7e9ee869(%rip),%edx        # 0x7e9ee879
  10:	81 e2 00 00 f0 00    	and    $0xf00000,%edx
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	75 0a                	jne    0x27
  1d:	8b 15 de 5b 55 0c    	mov    0xc555bde(%rip),%edx        # 0xc555c01
  23:	85 d2                	test   %edx,%edx
  25:	75 01                	jne    0x28
  27:	c3                   	retq
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
* 2a:	65 ff 05 48 e8 9e 7e 	incl   %gs:0x7e9ee848(%rip)        # 0x7e9ee879 <-- trapping instruction
  31:	e8 e3 92 09 08       	callq  0x8099319
  36:	48 c7 c3 40 af 03 00 	mov    $0x3af40,%rbx
  3d:	83 f8 07             	cmp    $0x7,%eax