rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 1, t=10502 jiffies, g=13225, q=983 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10498 (4294965502-4294955004), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10498 jiffies! g13225 f0x2 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:26712 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: 1 PID: 4055 Comm: syz.0.31 Not tainted 6.1.113-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x80 kernel/kcov.c:314
Code: 39 c8 77 22 89 f8 89 f6 49 ff c2 4c 89 11 48 c7 44 0a 08 03 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 0f 1f 00 <4c> 8b 04 24 65 48 8b 15 14 d9 77 7e 65 8b 05 15 d9 77 7e 25 00 01
RSP: 0018:ffffc900001e0448 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 1ffff9200003c06c
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000a20 R08: dffffc0000000000 R09: fffffbfff2246054
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007fd304dff6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7b741052d8 CR3: 000000005c82c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
netlink_broadcast+0xff8/0x10b0 net/netlink/af_netlink.c:1527
nlmsg_multicast include/net/netlink.h:1071 [inline]
nlmsg_notify+0xfb/0x1c0 net/netlink/af_netlink.c:2551
neigh_cleanup_and_release+0xcc/0x300 net/core/neighbour.c:101
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:1106 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:membarrier_mm_sync_core_before_usermode include/linux/sched/mm.h:425 [inline]
RIP: 0010:finish_task_switch+0x254/0x810 kernel/sched/core.c:5144
Code: 00 00 4d 85 f6 74 72 49 81 c4 28 05 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 32 b3 82 00 4d 39 34 24 75 34 <49> 8d 9e 88 00 00 00 48 89 df be 04 00 00 00 e8 a8 b4 82 00 48 89
RSP: 0018:ffffc900037ff168 EFLAGS: 00000246
RAX: 1ffff110039f1815 RBX: ffff88801cf8d1d8 RCX: ffffffff816b09aa
RDX: dffffc0000000000 RSI: ffffffff8b0c02c0 RDI: ffff88801cf8d178
RBP: ffffc900037ff1b0 R08: dffffc0000000000 R09: fffffbfff2246061
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801cf8c0a8
R13: dffffc0000000000 R14: ffff88807bd05280 R15: ffff88801cf95940
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x1447/0x4570 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:do_slab_free mm/slub.c:3614 [inline]
RIP: 0010:___cache_free+0x2b/0x90 mm/slub.c:3668
Code: 57 41 56 53 49 89 d6 48 89 f3 49 89 ff 48 89 f7 e8 7a 00 00 00 49 89 c0 41 b1 01 49 8b 07 65 48 03 05 31 e1 20 7e 48 8b 50 08 <4c> 39 40 10 75 2f 48 8b 00 41 8b 4f 28 48 89 04 19 49 8b 3f 40 f6
RSP: 0018:ffffc900037ff500 EFLAGS: 00000282
RAX: ffff8880b8f3e5e0 RBX: ffff88807e120200 RCX: ffffea0001f84800
RDX: 000000000000e1d1 RSI: 00000000000258ba RDI: 00000000000258bb
RBP: dffffc0000000000 R08: ffffea0001f84800 R09: 0000000080200001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888017c41b40
R13: 0000000000000dc0 R14: ffffffff81e2203b R15: ffff888017c41b40
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
__kmem_cache_alloc_node+0x137/0x260 mm/slub.c:3437
__do_kmalloc_node mm/slab_common.c:935 [inline]
__kmalloc_node+0xa2/0x230 mm/slab_common.c:943
kmalloc_array_node include/linux/slab.h:670 [inline]
kcalloc_node include/linux/slab.h:675 [inline]
memcg_alloc_slab_cgroups+0x7d/0x120 mm/memcontrol.c:2886
account_slab mm/slab.h:635 [inline]
allocate_slab mm/slub.c:1957 [inline]
new_slab+0xc0/0x2d0 mm/slub.c:1992
___slab_alloc+0xc20/0x1270 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x1a5/0x2d0 mm/slub.c:3422
vm_area_dup+0x23/0x1b0 kernel/fork.c:466
dup_mmap kernel/fork.c:645 [inline]
dup_mm kernel/fork.c:1540 [inline]
copy_mm+0xbbc/0x1990 kernel/fork.c:1589
copy_process+0x19d5/0x4060 kernel/fork.c:2264
kernel_clone+0x222/0x920 kernel/fork.c:2679
__do_sys_clone kernel/fork.c:2820 [inline]
__se_sys_clone kernel/fork.c:2804 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2804
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: 0033:0x7fd304f7dff9
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:00007fd304dfefe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fd305135f80 RCX: 00007fd304f7dff9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fd304ff0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd305135f80 R15: 00007ffd63de8948