[ovs-discuss] remove ovs2.9.0 kernel module will crash the system.

djliu liudj_yanjiu at 163.com
Fri Nov 22 08:45:52 UTC 2019


Hi all,
 
Recently I upgrade my kernel from 2.9.0 to 2.10.0. When I remove ovs 2.9.0
kernel module, the system crash, then reboot. Does anyone know why? My
environment is centos7, linux3.10.693
 
Below is my steps:
 
      ovs-dpct del-dp ovs-system
ip link del genev_sys_6081
ip link del vxlan_sys_4789
docker stop openvswitchd
rmmod vport_geneve && rmmod vport_vxlan && rmmod openvswitch
rpm -e openvswitch-kmod-2.9.0-1.el7.centos.x86_64 //Here, system crash.
 
The dmesg:
[6947249.802101] BUG: unable to handle kernel paging request at
ffffffffc091a280
[6947249.802477] IP: [<ffffffff81613aa0>]
inet_frag_secret_rebuild+0x50/0x120
[6947249.802772] PGD 19f5067 PUD 19f7067 PMD 1fede12067 PTE 0
[6947249.803068] Oops: 0000 [#1] SMP 
[6947249.803361] Modules linked in: vxlan nf_conntrack_netlink nfnetlink
vhost_net vhost macvtap macvlan tun ebtable_filter ebtables devlink
ip6table_filter ip6_tables geneve ip6_udp_tunnel udp_tunnel
nf_conntrack_ipv6 nf_nat_ipv6 nf_defrag_ipv6 8021q garp mrp fuse btrfs
raid6_pq xor vfat msdos fat ext4 mbcache jbd2 i40evf(OE) ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4
nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack
br_netfilter bridge stp llc dm_thin_pool dm_persistent_data dm_bio_prison
dm_bufio loop bonding dm_mirror dm_region_hash dm_log dm_mod sb_edac
edac_core coretemp intel_rapl iosf_mbi kvm_intel kvm irqbypass crc32_pclmul
ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd
iTCO_wdt iTCO_vendor_support joydev
[6947249.806297]  mxm_wmi ses enclosure mei_me scsi_transport_sas mei sg
pcspkr i2c_i801 lpc_ich shpchp ipmi_si ipmi_devintf ipmi_msghandler
acpi_power_meter wmi ip_tables xfs libcrc32c sd_mod crc_t10dif
crct10dif_generic ast drm_kms_helper syscopyarea sysfillrect sysimgblt
fb_sys_fops ttm drm ahci igb libahci crct10dif_pclmul crct10dif_common
libata crc32c_intel megaraid_sas dca i40e(OE) ptp i2c_algo_bit i2c_core
pps_core [last unloaded: openvswitch]
[6947249.809054] CPU: 25 PID: 0 Comm: swapper/25 Tainted: G        W  OE
------------   3.10.0-693.el7.x86_64 #1
[6947249.809835] Hardware name: Sugon I620-G20/60G24-US, BIOS 001 02/10/2017
[6947249.810637] task: ffff8801536ddee0 ti: ffff8801536f4000 task.ti:
ffff8801536f4000
[6947249.811467] RIP: 0010:[<ffffffff81613aa0>]  [<ffffffff81613aa0>]
inet_frag_secret_rebuild+0x50/0x120
[6947249.812335] RSP: 0018:ffff881fffb43de8  EFLAGS: 00010286
[6947249.813210] RAX: 0000000000000000 RBX: ffffffffc091a280 RCX:
0000000000000000
[6947249.814115] RDX: 0000000000000040 RSI: 0000000000000000 RDI:
ffff881fffb43db0
[6947249.815034] RBP: ffff881fffb43e20 R08: 00000000a352f37e R09:
ffff881fffb43d70
[6947249.815965] R10: 0000000066fee719 R11: 00000000f69096ad R12:
0000000000000000
[6947249.816912] R13: ffffffffc091a280 R14: ffffffff81613a50 R15:
ffffffffc091a280
[6947249.817880] FS:  0000000000000000(0000) GS:ffff881fffb40000(0000)
knlGS:0000000000000000
[6947249.818877] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[6947249.819887] CR2: ffffffffc091a280 CR3: 00000000019f2000 CR4:
00000000003427e0
[6947249.820922] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[6947249.821966] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[6947249.823014] Stack:
[6947249.824059]  ffffffffc091e280 000000029e15af7c ffff880152d00000
ffffffffc091e290
[6947249.825157]  0000000000000100 ffffffff81613a50 ffffffffc091a280
ffff881fffb43e58
[6947249.826275]  ffffffff81097316 ffff880152d00000 000000000000007c
ffffffff81613a50
[6947249.827414] Call Trace:
[6947249.828552]  <IRQ> 
[6947249.828569] 
[6947249.829709]  [<ffffffff81613a50>] ? inet_frags_init+0xa0/0xa0
[6947249.830880]  [<ffffffff81097316>] call_timer_fn+0x36/0x110
[6947249.832065]  [<ffffffff81613a50>] ? inet_frags_init+0xa0/0xa0
[6947249.833265]  [<ffffffff8109982d>] run_timer_softirq+0x22d/0x310
[6947249.834477]  [<ffffffff81090b3f>] __do_softirq+0xef/0x280
[6947249.835694]  [<ffffffff816b6a5c>] call_softirq+0x1c/0x30
[6947249.836916]  [<ffffffff8102d3c5>] do_softirq+0x65/0xa0
[6947249.838148]  [<ffffffff81090ec5>] irq_exit+0x105/0x110
[6947249.839388]  [<ffffffff816b76c2>] smp_apic_timer_interrupt+0x42/0x50
[6947249.840647]  [<ffffffff816b5c1d>] apic_timer_interrupt+0x6d/0x80
[6947249.841917]  <EOI> 
[6947249.841929] 
[6947249.843199]  [<ffffffff816ab4a6>] ? native_safe_halt+0x6/0x10
[6947249.844497]  [<ffffffff816ab33e>] default_idle+0x1e/0xc0
[6947249.845785]  [<ffffffff81035006>] arch_cpu_idle+0x26/0x30
[6947249.847062]  [<ffffffff810e7bca>] cpu_startup_entry+0x14a/0x1c0
[6947249.848333]  [<ffffffff81051af6>] start_secondary+0x1b6/0x230
[6947249.849598] Code: 00 48 89 45 d0 48 8d 87 00 40 00 00 48 89 c7 48 89 45
c8 e8 83 7e 09 00 48 8d bb 60 40 00 00 be 04 00 00 00 e8 42 da e0 ff 66 90
<49> 8b 55 00 48 85 d2 74 76 4c 8d 7a 98 eb 05 90 4d 8d 7e 98 4d 
[6947249.852219] RIP  [<ffffffff81613aa0>]
inet_frag_secret_rebuild+0x50/0x120
[6947249.853465]  RSP <ffff881fffb43de8>
[6947249.854669] CR2: ffffffffc091a280
 
 
 
 
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