Verification for questing:linux on machine beldam:
+ uname -a
Linux beldam 6.17.0-7-generic #7-Ubuntu SMP PREEMPT_DYNAMIC Sat Oct 18 10:10:29
UTC 2025 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state enable, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state disable, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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-2927 [065] ..... 468.282609: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x0
ip-2927 [065] ..... 468.282613: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2938 [064] ..... 473.529544: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x0
ip-2938 [064] ..... 473.529547: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2965 [066] ..... 478.671107: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x1
ip-2965 [066] ..... 478.671111: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2968 [065] ..... 483.816621: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x2
ip-2971 [025] ..... 488.829630: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x0
ip-2971 [025] ..... 488.829633: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2974 [024] ..... 493.975093: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x0
ip-2974 [024] ..... 493.975096: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2976 [024] ..... 499.117811: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x1d0 [i40e]) netdev=0xffff8e7217b05000
vf_id=0x0 link=0x0
ip-2976 [024] ..... 499.117813: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
After upgrading to kernel from -proposed:
+ uname -a
Linux beldam 6.17.0-8-generic #8-Ubuntu SMP PREEMPT_DYNAMIC Fri Nov 14 21:44:46
UTC 2025 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state enable, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state disable, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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 aa:31:60:41:6f:a1 brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 1 link/ether 02:25:ef:ec:ca:6e brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 2 link/ether 7e:dd:7a:09:15:ba brd ff:ff:ff:ff:ff:ff, spoof checking
on, link-state auto, trust off
vf 3 link/ether 1e:1c:65:fd:d5:48 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-2320 [037] ..... 301.711707: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x0
ip-2354 [037] ..... 306.721965: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x0
ip-2359 [078] ..... 311.735339: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x1
ip-2359 [078] ..... 311.735342: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2370 [078] ..... 316.881285: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x2
ip-2373 [078] ..... 321.894572: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x0
ip-2373 [078] ..... 321.894574: i40e_vc_reset_vf
<-i40e_ndo_set_vf_link_state
ip-2376 [038] ..... 327.039968: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x0
ip-2378 [037] ..... 332.049386: i40e_probe:
(i40e_ndo_set_vf_link_state+0x0/0x230 [i40e]) netdev=0xffff88d71a3a0000
vf_id=0x0 link=0x0
** Tags removed: verification-needed-questing-linux
** Tags added: verification-done-questing-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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