[OLK5.10]并行释放大量的namespace时，会出现软死锁问题

【标题描述】能够简要描述问题：说明什么场景下，做了什么操作，出现什么问题（尽量使用正向表达方式）
并行释放大量的namespace时，会出现软死锁问题
【环境信息】
硬件信息：
1）	裸机场景提供出问题的硬件信息；
与硬件无关
2）	虚机场景提供虚机XML文件或者配置信息
与虚拟机配置无关
软件信息：
1）	OS版本及分支
openEuler release 22.03 LTS
NAME="openEuler"
VERSION="22.03 LTS"
ID="openEuler"
VERSION_ID="22.03"
PRETTY_NAME="openEuler 22.03 LTS"
ANSI_COLOR="0;31"

openEuler release 22.03 LTS
2）	内核信息
5.10.0+
3）	发现问题的组件版本信息
如果有特殊组网，请提供网络拓扑图
与组件版本无关
【问题复现步骤】
具体操作步骤
NIFS=50
for ((i=0; i<$NIFS; i++))
do
        ip netns add dummy-ns$i
        ip netns exec dummy-ns$i ip link set lo up
done

for ((j=0; j<$NIFS; j++))
do
        for ((i=0; i<1000; i++))
        do
                if=eth$j$i
                ip netns exec dummy-ns$j ip link add $if type dummy
                ip netns exec dummy-ns$j ip link set $if up
                done
done

for ((i=0; i<$NIFS; i++))
do
        ip netns del dummy-ns$i
done
出现概率(是否必现，概率性错误)
必现
【预期结果】
描述预期结果，可以通过对比新老版本获取
可以正常删除ns
【实际结果】
描述出问题的结果 
出现软死锁问题
【附件信息】
比如系统message日志/组件日志、dump信息、图片等
Jun  6 10:09:15 localhost kernel: [ 1517.636773] watchdog: BUG: soft lockup - CPU#29 stuck for 22s! [kworker/u96:3:670]
Jun  6 10:09:15 localhost kernel: [ 1517.637100] Modules linked in: dummy xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp tun bridge stp llc nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_mangle iptable_raw iptable_security rfkill ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc sg virtio_balloon fuse sch_fq_codel ip_tables ext4 mbcache jbd2 sr_mod sd_mod cdrom t10_pi ata_generic ata_piix libata 8139too 8139cp serio_raw cirrus dm_mod
Jun  6 10:09:15 localhost kernel: [ 1517.637783] CPU: 29 PID: 670 Comm: kworker/u96:3 Kdump: loaded Not tainted 5.10.0+ #1
Jun  6 10:09:15 localhost kernel: [ 1517.637792] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
Jun  6 10:09:15 localhost kernel: [ 1517.637896] Workqueue: netns cleanup_net
Jun  6 10:09:15 localhost kernel: [ 1517.637964] RIP: 0010:qlist_free_all+0x50/0xd0
Jun  6 10:09:15 localhost kernel: [ 1517.637979] Code: 00 00 80 48 bd 00 00 00 00 00 fc ff df eb 2c 48 63 87 ec 00 00 00 4c 8b 3e 48 c7 c2 35 11 e8 af 48 29 c6 48 89 f0 48 c1 e8 03 <c6> 04 28 fb e8 f7 c9 ff ff 4d 85 ff 74 44 4c 89 fe 48 89 df 48 85
Jun  6 10:09:15 localhost kernel: [ 1517.637986] RSP: 0018:ffff88813e4ef910 EFLAGS: 00010a02
Jun  6 10:09:15 localhost kernel: [ 1517.638001] RAX: 1ffff11059a89de0 RBX: 0000000000000000 RCX: ffffffffffffffff
Jun  6 10:09:15 localhost kernel: [ 1517.638011] RDX: ffffffffafe81135 RSI: ffff8882cd44ef00 RDI: ffff888100250800
Jun  6 10:09:15 localhost kernel: [ 1517.638015] RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffffafe81100
Jun  6 10:09:15 localhost kernel: [ 1517.638022] R10: ffff8882cfcdac00 R11: ffffea000b3f36a0 R12: ffff88813e4ef948
Jun  6 10:09:15 localhost kernel: [ 1517.638029] R13: 0000000080000000 R14: ffffffff80000000 R15: ffff8881fb3efc40
Jun  6 10:09:15 localhost kernel: [ 1517.638040] FS:  0000000000000000(0000) GS:ffff88871aa80000(0000) knlGS:0000000000000000
Jun  6 10:09:15 localhost kernel: [ 1517.638047] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun  6 10:09:15 localhost kernel: [ 1517.638054] CR2: 00007f2223900940 CR3: 00000001d640e000 CR4: 00000000000006e0
Jun  6 10:09:15 localhost kernel: [ 1517.638058] Call Trace:
Jun  6 10:09:15 localhost kernel: [ 1517.638078]  quarantine_reduce+0x15f/0x1d0
Jun  6 10:09:15 localhost kernel: [ 1517.638090]  __kasan_kmalloc.constprop.0+0x9e/0xd0
Jun  6 10:09:15 localhost kernel: [ 1517.638100]  ? __alloc_skb+0x73/0x3f0
Jun  6 10:09:15 localhost kernel: [ 1517.638110]  kmem_cache_alloc_node+0x188/0x420
Jun  6 10:09:15 localhost kernel: [ 1517.638144]  ? _raw_spin_lock+0x7a/0xd0
Jun  6 10:09:15 localhost kernel: [ 1517.638154]  __alloc_skb+0x73/0x3f0
Jun  6 10:09:15 localhost kernel: [ 1517.638182]  inet_netconf_notify_devconf+0x40/0x110
Jun  6 10:09:15 localhost kernel: [ 1517.638192]  inetdev_destroy+0x146/0x200
Jun  6 10:09:15 localhost kernel: [ 1517.638202]  inetdev_event+0x23f/0x7c0
Jun  6 10:09:15 localhost kernel: [ 1517.638231]  raw_notifier_call_chain+0x86/0xc0
Jun  6 10:09:15 localhost kernel: [ 1517.638244]  call_netdevice_notifiers_info+0x91/0x110
Jun  6 10:09:15 localhost kernel: [ 1517.638256]  rollback_registered_many+0x3ea/0x7f0
Jun  6 10:09:15 localhost kernel: [ 1517.638267]  ? netdev_adjacent_change_abort+0x100/0x100
Jun  6 10:09:15 localhost kernel: [ 1517.638278]  ? rollback_registered+0x150/0x150
Jun  6 10:09:15 localhost kernel: [ 1517.638289]  unregister_netdevice_many+0x37/0x1a0
Jun  6 10:09:15 localhost kernel: [ 1517.638300]  default_device_exit_batch+0x24e/0x2b0
Jun  6 10:09:15 localhost kernel: [ 1517.638311]  ? unregister_netdevice_many+0x1a0/0x1a0
Jun  6 10:09:15 localhost kernel: [ 1517.638332]  ? finish_wait+0x100/0x100
Jun  6 10:09:15 localhost kernel: [ 1517.638342]  ? __mutex_lock_slowpath+0x10/0x10
Jun  6 10:09:15 localhost kernel: [ 1517.638356]  ? __call_rcu+0x4c0/0x4c0
Jun  6 10:09:15 localhost kernel: [ 1517.638375]  ? devlink_pernet_pre_exit+0x169/0x1a0
Jun  6 10:09:15 localhost kernel: [ 1517.638386]  ? unregister_netdevice_many+0x1a0/0x1a0
Jun  6 10:09:15 localhost kernel: [ 1517.638399]  ? dev_change_net_namespace+0x740/0x740
Jun  6 10:09:15 localhost kernel: [ 1517.638410]  ops_exit_list+0xab/0xc0
Jun  6 10:09:15 localhost kernel: [ 1517.638423]  cleanup_net+0x2c3/0x550
Jun  6 10:09:15 localhost kernel: [ 1517.638434]  ? peernet2id+0x70/0x70
Jun  6 10:09:15 localhost kernel: [ 1517.638475]  ? read_word_at_a_time+0xe/0x20
Jun  6 10:09:15 localhost kernel: [ 1517.638485]  ? strscpy+0xbe/0x190
Jun  6 10:09:15 localhost kernel: [ 1517.638502]  process_one_work+0x3a2/0x7c0
Jun  6 10:09:15 localhost kernel: [ 1517.638514]  worker_thread+0x93/0x6f0
Jun  6 10:09:15 localhost kernel: [ 1517.638525]  ? rescuer_thread+0x7c0/0x7c0
Jun  6 10:09:15 localhost kernel: [ 1517.638534]  kthread+0x1cc/0x220
Jun  6 10:09:15 localhost kernel: [ 1517.638544]  ? kthread_park+0x150/0x150
Jun  6 10:09:15 localhost kernel: [ 1517.638572]  ret_from_fork+0x22/0x30

GVP openEuler/kernel

内容风险标识

评论 (2)

GVPopenEuler/kernel

内容风险标识