rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=ab8c/1/0x4000000000000000 softirq=60898/60899 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5969/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=65481, q=121 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5815 Comm: syz-executor Not tainted 6.13.0-syzkaller-07259-g0f8e26b38d7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4894 [inline]
RIP: 0010:__lock_acquire+0x662/0x3c40 kernel/locking/lockdep.c:5178
Code: 0f b6 0c 29 44 38 c1 7f 08 84 c9 0f 85 c9 23 00 00 0f b6 88 c4 00 00 00 84 c9 74 3a 48 8d b8 c6 00 00 00 41 38 ce 44 0f 47 f1 <49> 89 f8 49 89 f9 49 c1 e8 03 41 83 e1 07 45 0f b6 04 28 45 38 c8
RSP: 0018:ffffc90000a18ab0 EFLAGS: 00000046
RAX: ffffffff96ebd540 RBX: ffff88802fc40ae0 RCX: 0000000000000002
RDX: fffffbfff2dd6f9a RSI: 0000000000000008 RDI: ffffffff96ebd606
RBP: dffffc0000000000 R08: 0000000000000004 R09: fffffbfff2dd6f99
R10: ffffffff96eb7ccf R11: 0000000000000003 R12: ffffed1005f8815b
R13: ffff88802fc40000 R14: 0000000000000002 R15: 0000000000000003
FS:  000055557f01c500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f305f80e870 CR3: 0000000060024000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000800 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
 debug_object_activate+0x149/0x4a0 lib/debugobjects.c:818
 debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
 debug_activate kernel/time/hrtimer.c:469 [inline]
 enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1075
 __run_hrtimer kernel/time/hrtimer.c:1755 [inline]
 __hrtimer_run_queues+0x903/0xae0 kernel/time/hrtimer.c:1802
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1864
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_release+0x3e5/0x6f0 kernel/locking/lockdep.c:5859
Code: 7e 83 f8 01 0f 85 fe 01 00 00 9c 58 f6 c4 02 0f 85 e9 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 c7 43 08 00 00 00 00 48 8b 84 24 88
RSP: 0018:ffffc90003eaf8c8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920007d5f1b RCX: ffffc90003eaf918
RDX: 1ffff11005f8815a RSI: ffffffff8b6cdd40 RDI: ffffffff8bd2e9c0
RBP: a9c7a3f3c9531e53 R08: 0000000000000000 R09: fffffbfff20c4642
R10: ffffffff90623217 R11: 0000000000000003 R12: 0000000000000003
R13: 0000000000000004 R14: ffff88802fc40ad8 R15: ffff88802fc40000
 rcu_lock_release include/linux/rcupdate.h:347 [inline]
 rcu_read_unlock+0x1c/0x60 include/linux/rcupdate.h:880
 percpu_ref_get_many include/linux/percpu-refcount.h:209 [inline]
 percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
 obj_cgroup_get include/linux/memcontrol.h:768 [inline]
 __memcg_slab_post_alloc_hook+0x413/0x9b0 mm/memcontrol.c:3011
 memcg_slab_post_alloc_hook mm/slub.c:2152 [inline]
 slab_post_alloc_hook mm/slub.c:4129 [inline]
 slab_alloc_node mm/slub.c:4168 [inline]
 kmem_cache_alloc_noprof+0x366/0x3d0 mm/slub.c:4175
 vma_lock_alloc kernel/fork.c:446 [inline]
 vm_area_dup+0x53/0x2f0 kernel/fork.c:499
 dup_mmap kernel/fork.c:694 [inline]
 dup_mm kernel/fork.c:1688 [inline]
 copy_mm kernel/fork.c:1740 [inline]
 copy_process+0x78ba/0x8d60 kernel/fork.c:2391
 kernel_clone+0xfd/0x960 kernel/fork.c:2803
 __do_sys_clone+0xba/0x100 kernel/fork.c:2946
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7490583593
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffdfd2bc838 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7490583593
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055557f01c7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000fcc92 R14: 00007ffdfd2bc9c0 R15: 000000000000024a
 </TASK>
task:kworker/u8:9    state:R  running task     stack:23840 pid:5969  tgid:5969  ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x1142/0x5b60 kernel/sched/core.c:6764
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7086
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5816
Code: b8 ff ff ff ff 65 0f c1 05 70 da 6b 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
RSP: 0018:ffffc900045a7a40 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 1ffff920008b4f49 RCX: 00000000bd8b1b3f
RDX: 0000000000000001 RSI: ffffffff8b6cdd40 RDI: ffffffff8bd2e9c0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2dd6f98
R10: ffffffff96eb7cc7 R11: 0000000000000002 R12: 0000000000000000
R13: ffffffff8e1be140 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x16a/0x1060 net/batman-adv/network-coding.c:719
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g65481 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:27392 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x1142/0x5b60 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 16836 Comm: syz.4.2653 Not tainted 6.13.0-syzkaller-07259-g0f8e26b38d7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x4c6/0x12c0 kernel/smp.c:885
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 fc 04 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 08 31
RSP: 0018:ffffc9000e21f710 EFLAGS: 00000246
RAX: 0000000000080000 RBX: ffff8880b8744a00 RCX: ffffc9000d873000
RDX: 0000000000080000 RSI: ffffffff81adb2b4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: ffffed10170e8941
R13: 0000000000000001 R14: ffff8880b863fe00 R15: ffff8880b8744a08
FS:  00007f6a0c6a56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003c80 CR3: 0000000060c3a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000800 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
 text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2324
 text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2512 [inline]
 text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2522
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x1d7/0x400 kernel/jump_label.c:920
 static_key_slow_inc_cpuslocked kernel/jump_label.c:168 [inline]
 static_key_slow_inc_cpuslocked+0x82/0x120 kernel/jump_label.c:151
 static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:191
 kvm_create_lapic+0x2cb/0x500 arch/x86/kvm/lapic.c:2935
 kvm_arch_vcpu_create+0x257/0xab0 arch/x86/kvm/x86.c:12260
 kvm_vm_ioctl_create_vcpu virt/kvm/kvm_main.c:4115 [inline]
 kvm_vm_ioctl+0xf4f/0x3d70 virt/kvm/kvm_main.c:5064
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a0b78cd29
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:00007f6a0c6a5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6a0b9a5fa0 RCX: 00007f6a0b78cd29
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004
RBP: 00007f6a0b80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6a0b9a5fa0 R15: 00007ffed9a4f328
 </TASK>