Hi,
Here some usb wifi devices connect to host through an usb hub on centos
linux release 7.2.1511.
Execute "lsusb":
Bus 002 Device 005: ID 0557:2419 ATEN International Co., Ltd
Bus 002 Device 004: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 002 Device 003: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory
Bus 002 Device 002: ID 8087:8002 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 026: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 025: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 024: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 023: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 018: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 001 Device 017: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 016: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 015: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 014: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 013: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 012: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 004: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port
Hub
Bus 001 Device 022: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 021: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 020: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 019: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 011: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 001 Device 010: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 009: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 008: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 007: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 006: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 005: ID 0cf3:9271 Atheros Communications, Inc. AR9271
802.11n
Bus 001 Device 003: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port
Hub
Bus 001 Device 002: ID 8087:800a Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Each usb wifi devices will map to every virtual machine based on
libvirt(kvm).
Several problems come out:
a, the wifi devices will disappear after its virtual machine shutdown,
only restart host it can reuse!
b, even crash occurs, puzzle!
So, anyone who had ever met these cases.
Thans for response!
Here are 2 logs for a/b, separated by "=====...".
BTW, i can not subscribe to linux-wireless/netdev maillist after several
tries, i do not know why, so i can not report to them.
================================================== a.log
==================================================
Apr 13 16:25:14 simpleMST kernel: ------------[ cut here ]------------
Apr 13 16:25:14 simpleMST kernel: WARNING: CPU: 0 PID: 0 at
drivers/usb/host/xhci-ring.c:1598 handle_cmd_completion+0xdb5/0xe60()
Apr 13 16:25:14 simpleMST kernel: Modules linked in: vhost_net vhost
macvtap macvlan tun fuse ebtable_filter ebtables ip6table_filter
ip6_tables bonding openvswitch gre vxlan libcrc32c nf_conntrack_ipv4
nf_defrag_ipv4 xt_comment xt_multiport xt_conntrack nf_conntrack
iptable_filter arc4 ath9k_htc ath9k_common ath9k_hw ath mac80211
cfg80211 x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm
rfkill crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul
glue_helper ablk_helper iTCO_wdt mei_me cryptd mei iTCO_vendor_support
ata_generic pcspkr ioatdma sg i2c_i801 lpc_ich pata_acpi mfd_core
shpchp ipmi_si ipmi_msghandler wmi acpi_power_meter nfsd auth_rpcgss
nfs_acl lockd sunrpc ip_tables ext4 mbcache jbd2 sd_mod crc_t10dif
crct10dif_generic ast syscopyarea sysfillrect sysimgblt drm_kms_helper
ttm drm igb ahci
Apr 13 16:25:14 simpleMST kernel: libahci libata ptp crct10dif_pclmul
crct10dif_common pps_core megaraid_sas crc32c_intel dca i2c_algo_bit
i2c_core dm_mirror dm_region_hash dm_log dm_mod
Apr 13 16:25:14 simpleMST kernel: CPU: 0 PID: 0 Comm: swapper/0 Not
tainted 3.15.6 #1
Apr 13 16:25:14 simpleMST kernel: Hardware name: Powerleader
PR2510G2/SC612DI-8F, BIOS 2.0a 06/17/2016
Apr 13 16:25:14 simpleMST kernel: 0000000000000000 3cd0391b2f2511b6
ffff88085fc03d68 ffffffff8161eabb
Apr 13 16:25:14 simpleMST kernel: 0000000000000000 ffff88085fc03da0
ffffffff8106db1d ffff8808539af6f0
Apr 13 16:25:14 simpleMST kernel: 00000008539af040 0000000000000008
ffff8808539af040 ffff880851f18000
Apr 13 16:25:14 simpleMST kernel: Call Trace:
Apr 13 16:25:14 simpleMST kernel: <IRQ> [<ffffffff8161eabb>]
dump_stack+0x45/0x56
Apr 13 16:25:14 simpleMST kernel: [<ffffffff8106db1d>]
warn_slowpath_common+0x7d/0xa0
Apr 13 16:25:14 simpleMST kernel: [<ffffffff8106dc4a>]
warn_slowpath_null+0x1a/0x20
Apr 13 16:25:14 simpleMST kernel: [<ffffffff8146be05>]
handle_cmd_completion+0xdb5/0xe60
Apr 13 16:25:14 simpleMST kernel: [<ffffffff814bdb8c>] ?
intel_pstate_timer_func+0x34c/0x420
Apr 13 16:25:14 simpleMST kernel: [<ffffffff8146d903>]
xhci_irq+0x333/0xa60
Apr 13 16:25:14 simpleMST kernel: [<ffffffff814296d6>]
usb_hcd_irq+0x26/0x40
Apr 13 16:25:14 simpleMST kernel: [<ffffffff810ca4fe>]
handle_irq_event_percpu+0x3e/0x1a0
Apr 13 16:25:14 simpleMST kernel: [<ffffffff810ca69d>]
handle_irq_event+0x3d/0x60
Apr 13 16:25:14 simpleMST kernel: [<ffffffff810cdcb1>]
handle_fasteoi_irq+0x81/0x150
Apr 13 16:25:14 simpleMST kernel: [<ffffffff81015ccf>]
handle_irq+0xbf/0x150
Apr 13 16:25:14 simpleMST kernel: [<ffffffff8162a8ba>] ?
atomic_notifier_call_chain+0x1a/0x20
Apr 13 16:25:14 simpleMST kernel: [<ffffffff81631b4f>] do_IRQ+0x4f/0xf0
Apr 13 16:25:14 simpleMST kernel: [<ffffffff816267ed>]
common_interrupt+0x6d/0x6d
Apr 13 16:25:14 simpleMST kernel: <EOI> [<fff
================================================== b.log
==================================================
May 11 11:16:28 mst kernel: ------------[ cut here ]------------
May 11 11:16:28 mst kernel: WARNING: CPU: 0 PID: 0 at
drivers/usb/core/urb.c:450 usb_submit_urb.part.6+0x15a/0x5d0()
May 11 11:16:28 mst kernel: usb 1-1.5.7.2: BOGUS urb xfer, pipe 1 != type 3
May 11 11:16:28 mst kernel: Modules linked in: vhost_net vhost macvtap macvlan
fuse xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat
ipt_REJECT tun bridge stp llc ebtable_filter ebtables ip6table_filter
ip6_tables bonding nf_conntrack_ipv4 nf_defrag_ipv4 openvswitch xt_comment
xt_multiport xt_conntrack nf_conntrack gre vxlan libcrc32c iptable_filter arc4
ath9k_htc ath9k_common ath9k_hw ath mac80211 cfg80211 x86_pkg_temp_thermal
intel_powerclamp coretemp rfkill kvm_intel kvm crc32_pclmul ghash_clmulni_intel
aesni_intel lrw gf128mul glue_helper ablk_helper iTCO_wdt sg cryptd
iTCO_vendor_support shpchp ipmi_si lpc_ich i2c_i801 pcspkr ioatdma mei_me
ipmi_msghandler mfd_core ata_generic pata_acpi mei wmi acpi_power_meter nfsd
auth_rpcgss nfs_acl lockd sunrpc ip_tables ext4 mbcache jbd2 sd_mod
May 11 11:16:28 mst kernel: crc_t10dif crct10dif_generic ast syscopyarea
sysfillrect sysimgblt drm_kms_helper ttm drm igb ahci libahci libata ptp
megaraid_sas crct10dif_pclmul crct10dif_common crc32c_intel pps_core dca
i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod
May 11 11:16:28 mst kernel: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W
3.15.6 #1
May 11 11:16:28 mst kernel: Hardware name: Powerleader PR2510G2/SC612DI-8F,
BIOS 2.0a 06/17/2016
May 11 11:16:28 mst kernel: 0000000000000000 1e83a650b0008a72 ffff88085fc03d18
ffffffff8161eabb
May 11 11:16:28 mst kernel: ffff88085fc03d60 ffff88085fc03d50 ffffffff8106db1d
ffff880842518e40
May 11 11:16:28 mst kernel: 0000000000000002 0000000000000001 0000000000000002
ffff88084faf1000
May 11 11:16:28 mst kernel: Call Trace:
May 11 11:16:28 mst kernel: <IRQ> [<ffffffff8161eabb>] dump_stack+0x45/0x56
May 11 11:16:28 mst kernel: [<ffffffff8106db1d>] warn_slowpath_common+0x7d/0xa0
May 11 11:16:28 mst kernel: [<ffffffff8106db9c>] warn_slowpath_fmt+0x5c/0x80
May 11 11:16:28 mst kernel: [<ffffffff81500421>] ?
__kmalloc_reserve.isra.25+0x31/0x90
May 11 11:16:28 mst kernel: [<ffffffff8142d62a>]
usb_submit_urb.part.6+0x15a/0x5d0
May 11 11:16:28 mst kernel: [<ffffffff8142dad5>] usb_submit_urb+0x35/0x80
May 11 11:16:28 mst kernel: [<ffffffffa03f4a2e>]
ath9k_hif_usb_reg_in_cb+0x11e/0x1b0 [ath9k_htc]
May 11 11:16:28 mst kernel: [<ffffffff8142a217>]
__usb_hcd_giveback_urb+0x77/0x100
May 11 11:16:28 mst kernel: [<ffffffff8142b003>] usb_giveback_urb_bh+0xb3/0x150
May 11 11:16:28 mst kernel: [<ffffffff81072e63>] tasklet_hi_action+0xf3/0x100
May 11 11:16:28 mst kernel: [<ffffffff81073275>] __do_softirq+0xf5/0x2e0
May 11 11:16:28 mst kernel: [<ffffffff8107373d>] irq_exit+0x10d/0x120
May 11 11:16:28 mst kernel: [<ffffffff81631b58>] do_IRQ+0x58/0xf0
May 11 11:16:28 mst kernel: [<ffffffff816267ed>] common_interrupt+0x6d/0x6d
May 11 11:16:28 mst kernel: <EOI> [<ffffffff814be382>] ?
cpuidle_enter_state+0x52/0xc0
May 11 11:16:28 mst kernel: [<ffffffff814be378>] ? cpuidle_enter_state+0x48/0xc0
May 11 11:16:28 mst kernel: [<ffffffff814be427>] cpuidle_enter+0x17/0x20
May 11 11:16:28 mst kernel: [<ffffffff810b7384>] cpu_startup_entry+0x304/0x410
May 11 11:16:28 mst kernel: [<ffffffff8160c537>] rest_init+0x77/0x80
May 11 11:16:28 mst kernel: [<ffffffff81a91fdb>] start_kernel+0x45d/0x47e
May 11 11:16:28 mst kernel: [<ffffffff81a91987>] ? repair_env_string+0x5c/0x5c
May 11 11:16:28 mst kernel: [<ffffffff81a91120>] ?
early_idt_handlers+0x120/0x120
May 11 11:16:28 mst kernel: [<ffffffff81a915ee>]
x86_64_start_reservations+0x2a/0x2c
May 11 11:16:28 mst kernel: [<ffffffff81a91742>] x86_64_start_kernel+0x152/0x175
May 11 11:16:28 mst kernel: ---[ end trace 677e204f5ffdc531 ]---
