rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P940/1:b..l P9531/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=42713, q=1004 ncpus=2)
task:cmp             state:R  running task     stack:24992 pid:9531  tgid:9531  ppid:9495   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:mas_next_node+0x9ea/0xe00 lib/maple_tree.c:4592
Code: e6 e8 6a f4 0a f6 44 38 e3 4b 8d 1c e7 48 0f 46 dd 48 89 d8 48 c1 e8 03 42 80 3c 30 00 4d 89 f7 74 08 48 89 df e8 26 3f 72 f6 <4c> 8b 33 48 8b 44 24 58 42 80 3c 38 00 4c 8b 64 24 18 74 08 48 89
RSP: 0018:ffffc90002d47218 EFLAGS: 00000246
RAX: 1ffff1100491fbc2 RBX: ffff8880248fde10 RCX: 000000008cee5603
RDX: ffff88801ab1da00 RSI: 0000000000000001 RDI: 0000000000000009
RBP: ffffc90002d473c8 R08: ffffffff8b888f96 R09: ffffffff8b8889e4
R10: 0000000000000004 R11: ffff88801ab1da00 R12: 0000000000000001
R13: ffff8880248fde00 R14: dffffc0000000000 R15: dffffc0000000000
 mt_validate_nulls lib/maple_tree.c:7550 [inline]
 mt_validate+0x44ff/0x4aa0 lib/maple_tree.c:7596
 validate_mm+0xe7/0x530 mm/mmap.c:329
 __split_vma+0xaca/0xc30 mm/mmap.c:2481
 do_vmi_align_munmap+0x433/0x18c0 mm/mmap.c:2646
 do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2800
 mmap_region+0x72f/0x2090 mm/mmap.c:2851
 do_mmap+0x8ad/0xfa0 mm/mmap.c:1438
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1484
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0c72eab74
RSP: 002b:00007ffe27e60bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffe27e60c18 RCX: 00007fc0c72eab74
RDX: 0000000000000005 RSI: 0000000000088000 RDI: 00007fc0c7213000
RBP: 00007ffe27e60f40 R08: 0000000000000003 R09: 000000000000f000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fc0c72c70c0
R13: 00007ffe27e60fc8 R14: 000000000000ed80 R15: 0000000000000000
 </TASK>
task:kworker/u8:5    state:R  running task     stack:22104 pid:940   tgid:940   ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0xb8/0xa30 kernel/locking/lockdep.c:5770
Code: 08 0f 83 fe 05 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 28 a8 af 8f be 08 00 00 00 e8 20 fe 8a 00 48 0f a3 1d f0 d4 3f 0e <73> 16 e8 a1 ce 09 00 84 c0 75 0d 80 3d b4 1b 2a 0e 00 0f 84 fc 05
RSP: 0018:ffffc900038b7a20 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff816fd330
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fafa828
RBP: ffffc900038b7b48 R08: ffffffff8fafa82f R09: 1ffffffff1f5f505
R10: dffffc0000000000 R11: fffffbfff1f5f506 R12: 1ffff92000716f50
R13: ffffffff8b5b5c1b R14: ffff88801b6ee540 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:336 [inline]
 rcu_read_unlock include/linux/rcupdate.h:869 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x28b/0x610 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 10299 jiffies! g42713 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:24560 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.10.0-syzkaller-12030-g66ebbdfdeb09 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 40 d7 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 45 26 99 00 f3 0f 1e fa fb f4 <fa> e9 24 26 1f 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff888017ae8000 RBX: ffff88801ba99864 RCX: 0000000000582071
RDX: 0000000000000001 RSI: ffff88801ba99800 RDI: ffff88801ba99864
RBP: 000000000003a6b8 R08: ffff8880b9537c7b R09: 1ffff110172a6f8f
R10: dffffc0000000000 R11: ffffffff8b911690 R12: ffff88801a7da800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eadcb40
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c451c7a CR3: 000000007d4d0000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
 cpuidle_enter_state+0x114/0x480 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:230 [inline]
 do_idle+0x375/0x5d0 kernel/sched/idle.c:326
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
 start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x13e/0x147
 </TASK>