kernel panic

[dimsua]

На openvz ядрах словили kernel panic, при остановке fastnetmon и выгрузке pf_ring все нормализовалось, подозреваю связано с tun/tap - это в баг трекер openvz лучше отправить или как-то можно локально решить?

Aug 13 19:06:22 vz60 kernel: [ 286.620099] remove_proc_entry: removing non-empty directory 'dev/tap0', leaking at least 'info'
Aug 13 19:06:22 vz60 kernel: [ 286.620102] Modules linked in: vzethdev pio_nfs pio_direct pfmt_raw pfmt_ploop1 ploop simfs vzrst vzcpt nfs lockd fscache auth_rpcgss nfs_acl sunrpc vziolimit vzdquota ip6t_REJECT ip6table_mangle ip6table_filter ip6_tables vzevent vznetdev vzmon vzdev ipv6 flashcache(U) pf_ring(U) xt
_connlimit xt_MARK xt_mark ppp_deflate zlib_deflate ppp_async crc_ccitt arc4 ecb ppp_mppe ppp_generic slhc nf_conntrack_tftp nf_conntrack_proto_sctp nf_conntrack_netlink nfnetlink nf_nat_sip nf_conntrack_sip nf_nat_pptp nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_proto_gre nf_nat_h323 nf_conntrack_h323 nf_nat_a
manda ts_kmp nf_conntrack_amanda iptable_raw xt_recent xt_owner xt_iprange xt_hashlimit ipt_ecn ipt_ah ipt_addrtype ipt_ULOG xt_HL ipt_REDIRECT ipt_NETMAP ipt_ECN ipt_CLUSTERIP ipt_MASQUERADE tun xt_DSCP nf_nat_irc nf_nat_ftp iptable_nat nf_nat xt_state xt_helper xt_conntrack ipt_LOG nf_conntrack_irc nf_conntrack_f
tp nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 xt_length xt_hl xt_tcpmss xt
Aug 13 19:06:22 vz60 kernel: TCPMSS iptable_mangle iptable_filter xt_multiport xt_limit xt_dscp ipt_REJECT ip_tables microcode iTCO_wdt iTCO_vendor_support igb i2c_algo_bit ptp pps_core sg i2c_i801 i2c_core lpc_ich mfd_core ioatdma dca i7core_edac edac_core shpchp ext4 jbd2 mbcache sd_mod crc_t10dif pata_acpi ata
generic ata_piix dm_mirror dm_region_hash dm_log dm_mod megaraid_sas [last unloaded: scsi_wait_scan]
Aug 13 19:06:22 vz60 kernel: [ 286.620193] Pid: 14403, comm: openvpn veid: 98018 Tainted: G W --------------- 2.6.32-042stab092.3 #1
Aug 13 19:06:22 vz60 kernel: [ 286.620196] Call Trace:
Aug 13 19:06:22 vz60 kernel: [ 286.620203] [] ? warn_slowpath_common+0x87/0xc0
Aug 13 19:06:22 vz60 kernel: [ 286.620207] [] ? warn_slowpath_fmt+0x46/0x50
Aug 13 19:06:22 vz60 kernel: [ 286.620210] [] ? xlate_proc_name+0x4d/0xd0
Aug 13 19:06:22 vz60 kernel: [ 286.620214] [] ? remove_proc_entry+0x26a/0x270
Aug 13 19:06:22 vz60 kernel: [ 286.620221] [] ? remove_device_from_ring_list+0x78/0x100 [pf_ring]
Aug 13 19:06:22 vz60 kernel: [ 286.620226] [] ? ring_notifier+0x201/0x3c0 [pf_ring]
Aug 13 19:06:22 vz60 kernel: [ 286.620231] [] ? call_rcu_sched+0x15/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620236] [] ? notifier_call_chain+0x55/0x80
Aug 13 19:06:22 vz60 kernel: [ 286.620241] [] ? raw_notifier_call_chain+0x16/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620246] [] ? call_netdevice_notifiers+0x1b/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620249] [] ? rollback_registered_many+0x179/0x2e0
Aug 13 19:06:22 vz60 kernel: [ 286.620253] [] ? rollback_registered+0x38/0x50
Aug 13 19:06:22 vz60 kernel: [ 286.620256] [] ? unregister_netdevice_queue+0x70/0xc0
Aug 13 19:06:22 vz60 kernel: [ 286.620259] [] ? unregister_netdevice+0x10/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620265] [] ? tun_chr_close+0xd8/0x100 [tun]
Aug 13 19:06:22 vz60 kernel: [ 286.620270] [] ? __fput+0xf8/0x280
Aug 13 19:06:22 vz60 kernel: [ 286.620274] [] ? fput+0x25/0x30
Aug 13 19:06:22 vz60 kernel: [ 286.620277] [] ? filp_close+0x5d/0x90
Aug 13 19:06:22 vz60 kernel: [ 286.620280] [] ? sys_close+0xa5/0x100
Aug 13 19:06:22 vz60 kernel: [ 286.620286] [] ? ia32_sysret+0x0/0x5
Aug 13 19:06:22 vz60 kernel: [ 286.620288] ---[ end trace de0e4cfc384a232c ]---
Aug 13 19:06:22 vz60 kernel: [ 286.620290] Tainting kernel with flag 0x9
Aug 13 19:06:22 vz60 kernel: [ 286.620292] Pid: 14403, comm: openvpn veid: 98018 Tainted: G W --------------- 2.6.32-042stab092.3 #1
Aug 13 19:06:22 vz60 kernel: [ 286.620295] Call Trace:
Aug 13 19:06:22 vz60 kernel: [ 286.620298] [] ? add_taint+0x71/0x80
Aug 13 19:06:22 vz60 kernel: [ 286.620301] [] ? warn_slowpath_common+0x94/0xc0
Aug 13 19:06:22 vz60 kernel: [ 286.620305] [] ? warn_slowpath_fmt+0x46/0x50
Aug 13 19:06:22 vz60 kernel: [ 286.620308] [] ? xlate_proc_name+0x4d/0xd0
Aug 13 19:06:22 vz60 kernel: [ 286.620311] [] ? remove_proc_entry+0x26a/0x270
Aug 13 19:06:22 vz60 kernel: [ 286.620316] [] ? remove_device_from_ring_list+0x78/0x100 [pf_ring]
Aug 13 19:06:22 vz60 kernel: [ 286.620321] [] ? ring_notifier+0x201/0x3c0 [pf_ring]
Aug 13 19:06:22 vz60 kernel: [ 286.620324] [] ? call_rcu_sched+0x15/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620328] [] ? notifier_call_chain+0x55/0x80
Aug 13 19:06:22 vz60 kernel: [ 286.620332] [] ? raw_notifier_call_chain+0x16/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620335] [] ? call_netdevice_notifiers+0x1b/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620338] [] ? rollback_registered_many+0x179/0x2e0
Aug 13 19:06:22 vz60 kernel: [ 286.620342] [] ? rollback_registered+0x38/0x50
Aug 13 19:06:22 vz60 kernel: [ 286.620345] [] ? unregister_netdevice_queue+0x70/0xc0
Aug 13 19:06:22 vz60 kernel: [ 286.620348] [] ? unregister_netdevice+0x10/0x20
Aug 13 19:06:22 vz60 kernel: [ 286.620353] [] ? tun_chr_close+0xd8/0x100 [tun]
Aug 13 19:06:22 vz60 kernel: [ 286.620356] [] ? __fput+0xf8/0x280
Aug 13 19:06:22 vz60 kernel: [ 286.620359] [] ? fput+0x25/0x30
Aug 13 19:06:22 vz60 kernel: [ 286.620362] [] ? filp_close+0x5d/0x90
Aug 13 19:06:22 vz60 kernel: [ 286.620365] [] ? sys_close+0xa5/0x100
Aug 13 19:06:22 vz60 kernel: [ 286.620369] [] ? ia32_sysret+0x0/0x5

[pavel-odintsov]

Попробуйте взять pf_ring модуль самый новый из SVN и переберите под него fastnetmon/pf_ring либу. Я репортил этот баг, он в pf_ring.

[pavel-odintsov]

Помогло?

[vps2fast]

Any news?:)

[dimsua]

пока не тестировал :( Аврал был, на следующей неделе соберу новый, но kernel panic больше не ловил

[pavel-odintsov]

It's an PF_RING issue which fixed in modern version and I close this issue.