[LTP] [linus:master] [net] 8e63c9e617: ltp.uevent02.fail

[LTP] [linus:master] [net] 8e63c9e617: ltp.uevent02.fail

[kernel test robot]

Hello,

kernel test robot noticed "ltp.uevent02.fail" on:

commit: 8e63c9e6179ace3033dcd19991f95386e9d3130f ("net: Defer netdev KOBJ_ADD uevent until the device is published") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

[test failed on linus/master      06cf61899d6498b33e4b7c87d99d5bd471ccc375]
[test failed on linux-next/master 6b8c8af514d739d0335f5579b585e02babe8a727]

in testcase: ltp
version: 
with following parameters:

	test: uevent



config: x86_64-rhel-9.4-ltp
compiler: gcc-14
test machine: 16 threads Intel(R) Core(TM) i7-13620H (Raptor Lake) with 32G 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 <yi1.lai@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202608120846.30e0fb5b-lkp@intel.com


PATH=/lkp/benchmarks/ltp:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/lkp/lkp/src/bin
2026-08-09 01:07:36 cd /lkp/benchmarks/ltp
2026-08-09 01:07:36 export LTP_RUNTIME_MUL=2
2026-08-09 01:07:36 export LTPROOT=/lkp/benchmarks/ltp
2026-08-09 01:07:36 kirk -f uevent
Host information
	Hostname:   igk-rpl-d01
	Python:     3.13.5 (main, Jun 13 2026, 14:18:01) [GCC 14.2.0]
	Directory:  /tmp/kirk.root/tmp53a0pl45

Connecting to SUT: default

Suite: uevent
─────────────
 [1;37muevent01:  [0m [1;32mpass [0m |  [1;33mtainted [0m  (0.137s)
 [1;37muevent02:  [0m [1;31mfail [0m |  [1;33mtainted [0m  (5.364s)
 [1;37muevent03:  [0m [1;32mpass [0m |  [1;33mtainted [0m  (0.035s)

Execution time: 5.592s

Disconnecting from SUT: default

Target information
──────────────────
Kernel:   Linux 7.2.0-rc5+ #1 SMP PREEMPT_DYNAMIC Sun Aug  9 02:47:33 CEST 2026
Cmdline:  ip=10.250.17.22::10.250.17.2:255.255.255.0:igk-rpl-d01::static
          root=/dev/ram0
          RESULT_ROOT=/result/ltp/uevent/igk-rpl-d01/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-ltp/gcc-14/8e63c9e6179ace3033dcd19991f95386e9d3130f/0
          BOOT_IMAGE=/pkg/linux/x86_64-rhel-9.4-ltp/gcc-14/8e63c9e6179ace3033dcd19991f95386e9d3130f/vmlinuz-7.2.0-rc5+
          branch=linux-devel/devel-hourly-20260807-211920
          job=/lkp/jobs/scheduled/igk-rpl-d01/ltp-uevent-debian-13-x86_64-20250902.cgz-8e63c9e6179a-20260809-232489-3exo8p-0.yaml
          user=lkp
          ARCH=x86_64
          kconfig=x86_64-rhel-9.4-ltp
          commit=8e63c9e6179ace3033dcd19991f95386e9d3130f
          intremap=posted_msi
          acpi_rsdp=0x3f88a014
          kho=off
          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=ttyUSB0,115200
          console=ttyUSB0,115200
          vga=normal
          rw
          keep_initrds=/osimage/pkg/debian-13-x86_64-20250902.cgz/ltp-x86_64-0ad79e6fa-1_20260808.cgz
          acpi_rsdp=0x3f88a014
Machine:  unknown
Arch:     x86_64
RAM:      28236192 kB
Swap:     0 kB
Distro:   debian 13

────────────────────────
      TEST SUMMARY
────────────────────────
Suite:   uevent
Runtime: 5.536s
Runs:    3

Results:
    Passed:   9
    Failed:   1
    Broken:   0
    Skipped:  0
    Warnings: 0

 [1;31mFailures: [0m
    • uevent02

Session stopped
LTP test details
----------------
uevent02: uevent.h:173: TFAIL: Did not get all expected UEVENTS



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260812/202608120846.30e0fb5b-lkp@intel.com



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https://github.com/intel/lkp-tests/wiki


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Re: [LTP] [linus:master] [net] 8e63c9e617: ltp.uevent02.fail

[Cyril Hrubis]

Hi!
The test was asserting, among other things, the exact order of the
events and it expects:

Add ...net/ltp-tun
Add ...ltp-tun/queues/rx-0
Add ...ltp-tun/queues/tx-0

But after this patch the order changed to:

Add ...ltp-tun/queues/rx-0
Add ...ltp-tun/queues/tx-0
Add ...net/ltp-tun

Is the order of these messages guaranteed or do we need to adjust the
test?

-- 
Cyril Hrubis
chrubis@suse.cz

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Re: [LTP] [linus:master] [net] 8e63c9e617: ltp.uevent02.fail

[Dragos Tatulea via ltp]

Hi Cyril,

On 12.08.26 11:55, Cyril Hrubis wrote:
> Hi!
> The test was asserting, among other things, the exact order of the
> events and it expects:
> 
> Add ...net/ltp-tun
> Add ...ltp-tun/queues/rx-0
> Add ...ltp-tun/queues/tx-0
> 
> But after this patch the order changed to:
> 
> Add ...ltp-tun/queues/rx-0
> Add ...ltp-tun/queues/tx-0
> Add ...net/ltp-tun
> 
> Is the order of these messages guaranteed or do we need to adjust the
> test?
> 
I don't know if there's any guarantee about that. But the mentioned
patch postpones the net availability creation for a good reason.

Maybe Jakub can chime in here.

Thanks,
Dragos


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