* Re: [LTP] [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE
[not found] <20260709095511.168235-1-simon.schippers@tu-dortmund.de>
@ 2026-07-15 14:01 ` kernel test robot
2026-07-15 14:32 ` Simon Schippers
0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2026-07-15 14:01 UTC (permalink / raw)
To: Simon Schippers
Cc: Willem de Bruijn, lkp, Brett Sheffield, Michael S . Tsirkin,
netdev, Jonathan Corbet, linux-doc, linux-kernel, Jason Wang,
Andrew Lunn, Eric Dumazet, Simon Schippers, oliver.sang,
Simon Horman, Shuah Khan, oe-lkp, Jakub Kicinski, Tim Gebauer,
Paolo Abeni, David S . Miller, ltp
Hello,
kernel test robot noticed "ltp.ioctl03.fail" on:
commit: 09154ff2072e36b86ba2d92d436b7f27df153ed1 ("[PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE")
url: https://github.com/intel-lab-lkp/linux/commits/Simon-Schippers/tun-tap-vhost-net-make-qdisc-backpressure-opt-in-via-IFF_BACKPRESSURE/20260709-181234
base: https://git.kernel.org/cgit/linux/kernel/git/davem/net.git fabb881df322da25442f98d23f5fa371e3c78ec4
patch link: https://lore.kernel.org/all/20260709095511.168235-1-simon.schippers@tu-dortmund.de/
patch subject: [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE
in testcase: ltp
version:
with following parameters:
disk: 1HDD
fs: ext4
test: syscalls-03
config: x86_64-rhel-9.4-ltp
compiler: gcc-14
test machine: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (Ivy Bridge) with 8G memory
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202607151550.5d829a99-lkp@intel.com
....
^[[1;37mgetuid03: ^[[0m^[[1;32mpass^[[0m (0.028s)
^[[1;37mioctl03: ^[[0m^[[1;31mfail^[[0m (0.047s) <-----
^[[1;37mioctl05: ^[[0m^[[1;32mpass^[[0m (0.471s)
....
Execution time: 3m 35s
Disconnecting from SUT: default
Target information
──────────────────
Kernel: Linux 7.2.0-rc1+ #1 SMP PREEMPT_DYNAMIC Sun Jul 12 07:25:38 CST 2026
Cmdline: ip=::::lkp-ivb-d04::dhcp
root=/dev/ram0
RESULT_ROOT=/result/ltp/1HDD-ext4-syscalls-03/lkp-ivb-d04/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-ltp/gcc-14/09154ff2072e36b86ba2d92d436b7f27df153ed1/0
BOOT_IMAGE=/pkg/linux/x86_64-rhel-9.4-ltp/gcc-14/09154ff2072e36b86ba2d92d436b7f27df153ed1/vmlinuz-7.2.0-rc1+
branch=linux-devel/devel-hourly-20260709-190759
job=/lkp/jobs/scheduled/lkp-ivb-d04/ltp-1HDD-ext4-syscalls-03-debian-13-x86_64-20250902.cgz-09154ff2072e-20260712-19649-tc8bu6-0.yaml
user=lkp
ARCH=x86_64
kconfig=x86_64-rhel-9.4-ltp
commit=09154ff2072e36b86ba2d92d436b7f27df153ed1
intremap=posted_msi
max_uptime=7200
LKP_SERVER=internal-lkp-server
nokaslr
selinux=0
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
console=tty0
earlyprintk=ttyS0,115200
console=ttyS0,115200
vga=normal
rw
keep_initrds=/osimage/pkg/debian-13-x86_64-20250902.cgz/ltp-x86_64-ed2758122-1_20260711.cgz
acpi_rsdp=0x000f0490
Machine: unknown
Arch: x86_64
RAM: 6895596 kB
Swap: 0 kB
Distro: debian 13
────────────────────────
TEST SUMMARY
────────────────────────
Suite: syscalls-03
Runtime: 3m 24s
Runs: 183
Results:
Passed: 2144
Failed: 1
Broken: 0
Skipped: 222
Warnings: 0
^[[1;31mFailures:^[[0m
• ioctl03
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260715/202607151550.5d829a99-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE
2026-07-15 14:01 ` [LTP] [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE kernel test robot
@ 2026-07-15 14:32 ` Simon Schippers
2026-07-16 1:22 ` Oliver Sang
0 siblings, 1 reply; 3+ messages in thread
From: Simon Schippers @ 2026-07-15 14:32 UTC (permalink / raw)
To: kernel test robot
Cc: Willem de Bruijn, lkp, Brett Sheffield, Michael S . Tsirkin,
netdev, Jonathan Corbet, linux-doc, linux-kernel, Jason Wang,
Andrew Lunn, Eric Dumazet, Simon Horman, Shuah Khan, oe-lkp,
Jakub Kicinski, Tim Gebauer, Paolo Abeni, David S . Miller, ltp
On 7/15/26 16:01, kernel test robot wrote:
>
>
> Hello,
>
> kernel test robot noticed "ltp.ioctl03.fail" on:
ioctl03.c does not know about IFF_BACKPRESSURE which is introduced here,
consequently it fails.
See [1] where it compares TUN features with known_flags.
Thanks.
[1] Link: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/ioctl/ioctl03.c#L82
>
> commit: 09154ff2072e36b86ba2d92d436b7f27df153ed1 ("[PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE")
> url: https://github.com/intel-lab-lkp/linux/commits/Simon-Schippers/tun-tap-vhost-net-make-qdisc-backpressure-opt-in-via-IFF_BACKPRESSURE/20260709-181234
> base: https://git.kernel.org/cgit/linux/kernel/git/davem/net.git fabb881df322da25442f98d23f5fa371e3c78ec4
> patch link: https://lore.kernel.org/all/20260709095511.168235-1-simon.schippers@tu-dortmund.de/
> patch subject: [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE
>
> in testcase: ltp
> version:
> with following parameters:
>
> disk: 1HDD
> fs: ext4
> test: syscalls-03
>
>
>
> config: x86_64-rhel-9.4-ltp
> compiler: gcc-14
> test machine: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (Ivy Bridge) with 8G memory
>
> (please refer to attached dmesg/kmsg for entire log/backtrace)
>
>
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@intel.com>
> | Closes: https://lore.kernel.org/oe-lkp/202607151550.5d829a99-lkp@intel.com
>
>
> ....
>
> ^[[1;37mgetuid03: ^[[0m^[[1;32mpass^[[0m (0.028s)
> ^[[1;37mioctl03: ^[[0m^[[1;31mfail^[[0m (0.047s) <-----
> ^[[1;37mioctl05: ^[[0m^[[1;32mpass^[[0m (0.471s)
>
> ....
>
> Execution time: 3m 35s
>
> Disconnecting from SUT: default
>
> Target information
> ──────────────────
> Kernel: Linux 7.2.0-rc1+ #1 SMP PREEMPT_DYNAMIC Sun Jul 12 07:25:38 CST 2026
> Cmdline: ip=::::lkp-ivb-d04::dhcp
> root=/dev/ram0
> RESULT_ROOT=/result/ltp/1HDD-ext4-syscalls-03/lkp-ivb-d04/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-ltp/gcc-14/09154ff2072e36b86ba2d92d436b7f27df153ed1/0
> BOOT_IMAGE=/pkg/linux/x86_64-rhel-9.4-ltp/gcc-14/09154ff2072e36b86ba2d92d436b7f27df153ed1/vmlinuz-7.2.0-rc1+
> branch=linux-devel/devel-hourly-20260709-190759
> job=/lkp/jobs/scheduled/lkp-ivb-d04/ltp-1HDD-ext4-syscalls-03-debian-13-x86_64-20250902.cgz-09154ff2072e-20260712-19649-tc8bu6-0.yaml
> user=lkp
> ARCH=x86_64
> kconfig=x86_64-rhel-9.4-ltp
> commit=09154ff2072e36b86ba2d92d436b7f27df153ed1
> intremap=posted_msi
> max_uptime=7200
> LKP_SERVER=internal-lkp-server
> nokaslr
> selinux=0
> debug
> apic=debug
> sysrq_always_enabled
> rcupdate.rcu_cpu_stall_timeout=100
> net.ifnames=0
> printk.devkmsg=on
> panic=-1
> softlockup_panic=1
> nmi_watchdog=panic
> oops=panic
> load_ramdisk=2
> prompt_ramdisk=0
> drbd.minor_count=8
> systemd.log_level=err
> ignore_loglevel
> console=tty0
> earlyprintk=ttyS0,115200
> console=ttyS0,115200
> vga=normal
> rw
> keep_initrds=/osimage/pkg/debian-13-x86_64-20250902.cgz/ltp-x86_64-ed2758122-1_20260711.cgz
> acpi_rsdp=0x000f0490
> Machine: unknown
> Arch: x86_64
> RAM: 6895596 kB
> Swap: 0 kB
> Distro: debian 13
>
> ────────────────────────
> TEST SUMMARY
> ────────────────────────
> Suite: syscalls-03
> Runtime: 3m 24s
> Runs: 183
>
> Results:
> Passed: 2144
> Failed: 1
> Broken: 0
> Skipped: 222
> Warnings: 0
>
> ^[[1;31mFailures:^[[0m
> • ioctl03
>
>
>
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20260715/202607151550.5d829a99-lkp@intel.com
>
>
>
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE
2026-07-15 14:32 ` Simon Schippers
@ 2026-07-16 1:22 ` Oliver Sang
0 siblings, 0 replies; 3+ messages in thread
From: Oliver Sang @ 2026-07-16 1:22 UTC (permalink / raw)
To: Simon Schippers
Cc: Willem de Bruijn, lkp, Brett Sheffield, Michael S . Tsirkin,
netdev, Jonathan Corbet, linux-doc, linux-kernel, Jason Wang,
Andrew Lunn, Eric Dumazet, oliver.sang, Simon Horman, Shuah Khan,
oe-lkp, Jakub Kicinski, Tim Gebauer, Paolo Abeni,
David S . Miller, ltp
hi, Simon Schippers,
On Wed, Jul 15, 2026 at 04:32:26PM +0200, Simon Schippers wrote:
> On 7/15/26 16:01, kernel test robot wrote:
> >
> >
> > Hello,
> >
> > kernel test robot noticed "ltp.ioctl03.fail" on:
>
> ioctl03.c does not know about IFF_BACKPRESSURE which is introduced here,
> consequently it fails.
> See [1] where it compares TUN features with known_flags.
thanks a lot for information!
>
> Thanks.
>
> [1] Link: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/ioctl/ioctl03.c#L82
>
[...]
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-07-16 1:23 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <20260709095511.168235-1-simon.schippers@tu-dortmund.de>
2026-07-15 14:01 ` [LTP] [PATCH net v3] tun/tap & vhost-net: make qdisc backpressure opt-in via IFF_BACKPRESSURE kernel test robot
2026-07-15 14:32 ` Simon Schippers
2026-07-16 1:22 ` Oliver Sang
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox