rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4056/2:b..l
(detected by 0, t=10502 jiffies, g=11177, q=873 ncpus=2)
task:syz.3.51 state:R running task stack:23960 pid:4056 ppid:3799 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_acquire+0x11/0x5a0 kernel/locking/lockdep.c:5630
Code: a2 fd ff ff 0f 1f 44 00 00 65 8b 05 e1 d6 97 7e a9 00 ff ff 00 0f 95 c0 c3 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 <48> 81 ec 20 01 00 00 4c 89 4c 24 28 4c 89 44 24 38 48 89 4c 24 30
RSP: 0018:ffffc9000378f2a0 EFLAGS: 00000286
RAX: 0000000000000002 RBX: ffff888073814010 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d32b000
RBP: ffffc9000378f2e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802ed9cf90
R13: dffffc0000000000 R14: ffffffff81e9c4f4 R15: ffff888073814000
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
percpu_ref_tryget+0x31/0x170 include/linux/percpu-refcount.h:266
css_tryget include/linux/cgroup.h:357 [inline]
get_mem_cgroup_from_objcg+0xc8/0x150 include/linux/memcontrol.h:523
uncharge_folio+0x103/0x6b0 mm/memcontrol.c:7070
__mem_cgroup_uncharge_list+0xba/0x150 mm/memcontrol.c:7137
mem_cgroup_uncharge_list include/linux/memcontrol.h:699 [inline]
release_pages+0x282e/0x2b40 mm/swap.c:1054
tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261
tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361
exit_mmap+0x3c3/0x9f0 mm/mmap.c:3239
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:565
do_exit+0x9f6/0x26a0 kernel/exit.c:858
do_group_exit+0x202/0x2b0 kernel/exit.c:1021
get_signal+0x16f7/0x17d0 kernel/signal.c:2870
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd53bd7dff9
RSP: 002b:00007fd53cb0f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd53bf35f88 RCX: 00007fd53bd7dff9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd53bf35f88
RBP: 00007fd53bf35f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd53bf35f8c
R13: 0000000000000000 R14: 00007ffcb6602840 R15: 00007ffcb6602928
rcu: rcu_preempt kthread starved for 10536 jiffies! g11177 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:25528 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4066 Comm: syz.1.52 Not tainted 6.1.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:perf_trace_lock+0x138/0x440 include/trace/events/lock.h:50
Code: 44 24 28 49 8d 5e 78 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 e5 65 78 00 4c 89 64 24 50 4c 8b 2b e8 38 2c 3d 09 <89> c3 83 f8 08 0f 83 e4 02 00 00 4c 8d 24 dd 70 d8 d8 8c 4c 89 e0
RSP: 0018:ffffc90000006dc0 EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffffffff8d1f7558 RCX: 000000008b0d1605
RDX: ffffffff8197b222 RSI: ffffffff8b5d7520 RDI: ffffffff8b5d74e0
RBP: ffffc90000006ed0 R08: dffffc0000000000 R09: fffffbfff1d34036
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8d32b000
R13: 0000607f46e42130 R14: ffffffff8d1f74e0 R15: dffffc0000000000
FS: 00007f177d1356c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2b788d CR3: 000000005a3ff000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x995/0xa20 kernel/locking/lockdep.c:5673
rcu_lock_release include/linux/rcupdate.h:355 [inline]
rcu_read_unlock include/linux/rcupdate.h:824 [inline]
is_bpf_text_address+0x289/0x2a0 kernel/bpf/core.c:733
kernel_text_address+0x9f/0xd0 kernel/extable.c:125
__kernel_text_address+0x9/0x40 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3401
neigh_del net/core/neighbour.c:225 [inline]
neigh_remove_one+0x5c6/0x6d0 net/core/neighbour.c:246
neigh_forced_gc net/core/neighbour.c:279 [inline]
neigh_alloc net/core/neighbour.c:485 [inline]
___neigh_create+0x459/0x24b0 net/core/neighbour.c:648
ip6_finish_output2+0x15ae/0x15f0 net/ipv6/ip6_output.c:129
__ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
ip6_finish_output+0x6a0/0xa80 net/ipv6/ip6_output.c:216
dst_output include/net/dst.h:444 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
ndisc_send_skb+0xbab/0x14e0 net/ipv6/ndisc.c:511
addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3963
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_release+0x637/0xa20 kernel/locking/lockdep.c:5686
Code: 3c 3b 00 74 08 4c 89 f7 e8 26 50 77 00 f6 84 24 91 00 00 00 02 75 6f 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90003947bc0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000728f8a RCX: ffffc90003947c03
RDX: 0000000000000000 RSI: ffffffff8b0c1440 RDI: ffffffff8b5d7540
RBP: ffffc90003947d00 R08: dffffc0000000000 R09: fffffbfff1d34036
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000728f84
R13: 0000000000000246 R14: ffffc90003947c50 R15: dffffc0000000000
up_read+0x12/0x20 kernel/locking/rwsem.c:1615
__do_sys_perf_event_open kernel/events/core.c:12745 [inline]
__se_sys_perf_event_open+0x4389/0x4960 kernel/events/core.c:12331
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f177c37dff9
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:00007f177d135038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f177c536130 RCX: 00007f177c37dff9
RDX: fffffdbfffffffff RSI: 0000000000000000 RDI: 0000000020000680
RBP: 00007f177c3f0296 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f177c536130 R15: 00007ffcd7952b28