netdev - Re: [Patch net] cgroup: fix cgroup_sk_alloc() for sk_clone

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Date:   Tue, 23 Jun 2020 16:45:28 +0800
From:   "Zhang,Qiang" <qiang.zhang@...driver.com>
To:     guro@...com
Cc:     "cam@...-zeon.de lizefan@...wei.com pgwipeout@...il.com xiyou.wangcong"@gmail.com,
        "daniel@...earbox.net tj@...nel.org netdev"@vger.kernel.org,
        dsonck92@...il.com, lizefan@...wei.com, lufq.fnst@...fujitsu.com,
        netdev@...r.kernel.org, pgwipeout@...il.com, tj@...nel.org,
        xiyou.wangcong@...il.com
Subject: Re: [Patch net] cgroup: fix cgroup_sk_alloc() for sk_clone_lock()

There are some message in kernelv5.4, I don't know if it will help.

demsg:

cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or 
net_cls activation
IPv6: ADDRCONF(NETDEV_CHANGE): veth4c31d8d2: link becomes ready
cni0: port 1(veth4c31d8d2) entered blocking state
cni0: port 1(veth4c31d8d2) entered disabled state
device veth4c31d8d2 entered promiscuous mode
cni0: port 1(veth4c31d8d2) entered blocking state
cni0: port 1(veth4c31d8d2) entered forwarding state
IPv4: martian source 10.244.1.2 from 10.244.1.2, on dev cni0
ll header: 00000000: ff ff ff ff ff ff 12 88 f0 cc 64 b8 08 06
IPv4: martian source 10.244.1.2 from 10.244.1.2, on dev eth0
ll header: 00000000: ff ff ff ff ff ff 12 88 f0 cc 64 b8 08 06
IPv4: martian source 10.244.1.1 from 10.244.1.2, on dev eth0
ll header: 00000000: ff ff ff ff ff ff 12 88 f0 cc 64 b8 08 06
IPv6: ADDRCONF(NETDEV_CHANGE): vethb556dc7b: link becomes ready
cni0: port 2(vethb556dc7b) entered blocking state
cni0: port 2(vethb556dc7b) entered disabled state
device vethb556dc7b entered promiscuous mode
cni0: port 2(vethb556dc7b) entered blocking state
cni0: port 2(vethb556dc7b) entered forwarding state
IPv4: martian source 10.244.1.3 from 10.244.1.3, on dev eth0
ll header: 00000000: ff ff ff ff ff ff 1a d7 25 1c ca 18 08 06
IPv4: martian source 10.244.1.1 from 10.244.1.3, on dev eth0
ll header: 00000000: ff ff ff ff ff ff 1a d7 25 1c ca 18 08 06
IPv4: martian source 10.244.1.2 from 10.244.1.3, on dev eth0
ll header: 00000000: ff ff ff ff ff ff 1a d7 25 1c ca 18 08 06
-----------[ cut here ]-----------
percpu ref (cgroup_bpf_release_fn) <= 0 (-12) after switching to atomic
WARNING: CPU: 1 PID: 0 at lib/percpu-refcount.c:161 
percpu_ref_switch_to_atomic_rcu+0x12a/0x140
Modules linked in: ipt_REJECT nf_reject_ipv4 vxlan ip6_udp_tunnel 
udp_tunnel xt_statistic xt_nat xt_tcpudp iptable_mangle xt_comment 
xt_mark xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user 
iptable_nat xt_addrtype iptable_filter ip_tables xt_conntrack x_tables 
br_netfilter bridge stp llc bnep iTCO_wdt iTCO_vendor_support watchdog 
intel_powerclamp gpio_ich mgag200 drm_vram_helper drm_ttm_helper ttm 
i2c_i801 coretemp lpc_ich acpi_cpufreq sch_fq_codel openvswitch nsh 
nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nfsd
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G I 5.7.0-yoctodev-standard #1
Hardware name: Intel Corporation S5520HC/S5520HC, BIOS 
S5500.86B.01.10.0025.030220091519 03/02/2009
RIP: 0010:percpu_ref_switch_to_atomic_rcu+0x12a/0x140
Code: 80 3d b1 42 3b 01 00 0f 85 56 ff ff ff 49 8b 54 24 d8 48 c7 c7 68 
57 1d a9 c6 05 98 42 3b 01 01 49 8b 74 24 e8 e8 ea 14 aa ff <0f> 0b e9 
32 ff ff ff 0f 0b eb 97 cc cc cc cc cc cc cc cc cc cc cc
RSP: 0018:ffff996183268e90 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 7ffffffffffffff3 RCX: 0000000000000000
RDX: 0000000000000102 RSI: ffffffffa9794aa7 RDI: 00000000ffffffff
RBP: ffff996183268ea8 R08: ffffffffa9794a60 R09: 0000000000000047
R10: 0000000080000001 R11: ffffffffa9794a8c R12: ffff95855904fef0
R13: 000023dc1ba33080 R14: ffff996183268ee0 R15: ffff95855904fef0
FS: 0000000000000000(0000) GS:ffff958563c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62622f8658 CR3: 000000044fc0a000 CR4: 00000000000006e0