Verification for plucky:linux on machine beldam:
+ uname -a
Linux beldam 6.14.0-36-generic #36-Ubuntu SMP PREEMPT_DYNAMIC Sat Oct 11
02:18:29 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
+ echo 0
+ echo
+ echo
+ echo 0
+ echo
+ echo function
+ echo i40e_vc_reset_vf
+ echo 'p:i40e_probe i40e_ndo_set_vf_link_state netdev=%di vf_id=%si:x32
link=%dx:x32'
+ echo 1
+ echo 1
+ echo 4
+ sudo tee /sys/class/net/enp176s0f0/device/sriov_numvfs
4
+ sleep 5
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state enable
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state enable, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state disable
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state disable, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ echo 0
+ cp /sys/kernel/debug/tracing/trace /tmp/trace.out
+ cat /tmp/trace.out
# tracer: function
#
# entries-in-buffer/entries-written: 13/13 #P:80
#
# _-----=> irqs-off/BH-disabled
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / _-=> migrate-disable
# |||| / delay
# TASK-PID CPU# ||||| TIMESTAMP FUNCTION
# | | | ||||| | |
ip-2836 [051] ..... 269.201939: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x0
ip-2836 [051] ..... 269.201944: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2838 [051] ..... 274.329779: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x0
ip-2838 [051] ..... 274.329782: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2841 [051] ..... 279.471910: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x1
ip-2841 [051] ..... 279.471913: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2844 [051] ..... 284.613907: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x2
ip-2847 [012] ..... 289.624257: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x0
ip-2847 [012] ..... 289.624260: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2850 [012] ..... 294.767077: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x0
ip-2850 [012] ..... 294.767080: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2852 [051] ..... 299.906088: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1e0 [i40e]) netdev=0xffff8ee1dec81000
vf_id=0x0 link=0x0
ip-2852 [051] ..... 299.906091: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
After upgrading to kernel in -proposed:
+ uname -a
Linux beldam 6.14.0-37-generic #37-Ubuntu SMP PREEMPT_DYNAMIC Fri Nov 14
22:10:32 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
+ echo 0
+ echo
+ echo
+ echo 0
+ echo
+ echo function
+ echo i40e_vc_reset_vf
+ echo 'p:i40e_probe i40e_ndo_set_vf_link_state netdev=%di vf_id=%si:x32
link=%dx:x32'
+ echo 1
+ echo 1
+ echo 4
+ sudo tee /sys/class/net/enp176s0f0/device/sriov_numvfs
4
+ sleep 5
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state enable
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state enable, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state disable
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state disable, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link show enp176s0f0
2: enp176s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
mode DEFAULT group default qlen 1000
link/ether 40:a6:b7:5d:39:88 brd ff:ff:ff:ff:ff:ff
vf 0 link/ether 76:42:9d:8b:8d:d3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether ce:ae:3c:f3:e8:e6 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether fa:46:83:92:76:eb brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether c6:e0:00:68:14:f3 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
altname enp176s0f0np0
altname enx40a6b75d3988
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ ip link set enp176s0f0 vf 0 state auto
+ sleep 5
+ echo 0
+ cp /sys/kernel/debug/tracing/trace /tmp/trace.out
+ cat /tmp/trace.out
# tracer: function
#
# entries-in-buffer/entries-written: 9/9 #P:80
#
# _-----=> irqs-off/BH-disabled
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / _-=> migrate-disable
# |||| / delay
# TASK-PID CPU# ||||| TIMESTAMP FUNCTION
# | | | ||||| | |
ip-2286 [057] ..... 152.123710: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x0
ip-2288 [057] ..... 157.130027: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x0
ip-2291 [058] ..... 162.139886: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x1
ip-2291 [058] ..... 162.139889: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2294 [058] ..... 167.277989: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x2
ip-2297 [057] ..... 172.287796: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x0
ip-2297 [057] ..... 172.287799: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2300 [058] ..... 177.429764: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x0
ip-2302 [057] ..... 182.435718: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x240 [i40e]) netdev=0xffff8d8fdb888000
vf_id=0x0 link=0x0
** Tags removed: verification-needed-plucky-linux
** Tags added: verification-done-plucky-linux
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https://bugs.launchpad.net/bugs/2130552
Title:
i40e driver is triggering VF resets on every link state change
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