[brauner-github:vfs-7.0.misc.2] [pidfs] ab89060fbc: ltp.ioctl_pidfd06.fail

Hello,

kernel test robot noticed "ltp.ioctl_pidfd06.fail" on:

commit: ab89060fbc92edd6e852bf0f533f29140afabe0e ("pidfs: return -EREMOTE when PIDFD_GET_INFO is called on another ns")
https://github.com/brauner/linux.git vfs-7.0.misc.2


in testcase: ltp
version: 
with following parameters:

	disk: 1SSD
	fs: ext4
	test: syscalls-00/ioctl_pidfd06



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 <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]


2026-04-24 14:31:03 export LTP_RUNTIME_MUL=2
2026-04-24 14:31:03 export LTPROOT=/lkp/benchmarks/ltp
2026-04-24 14:31:03 kirk -f temp_single_test --tmp-dir /fs/sdb1/tmpdir
Host information
	Hostname:   lkp-ivb-d04
	Python:     3.13.5 (main, Jun 25 2025, 18:55:22) [GCC 14.2.0]
	Directory:  /fs/sdb1/tmpdir/kirk.root/tmpks9yg0hx

Connecting to SUT: default

Suite: temp_single_test
───────────────────────
ioctl_pidfd06: fail | tainted  (0.025s)

Execution time: 0.088s

Disconnecting from SUT: default

Target information
──────────────────
Kernel:   Linux 6.19.0-rc1-00045-gab89060fbc92 #1 SMP PREEMPT_DYNAMIC Fri Apr 24 22:01:15 CST 2026
Cmdline:  ip=::::lkp-ivb-d04::dhcp
          root=/dev/ram0
          RESULT_ROOT=/result/ltp/1SSD-ext4-syscalls-00_ioctl_pidfd06/lkp-ivb-d04/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-ltp/gcc-14/ab89060fbc92edd6e852bf0f533f29140afabe0e/0
          BOOT_IMAGE=/pkg/linux/x86_64-rhel-9.4-ltp/gcc-14/ab89060fbc92edd6e852bf0f533f29140afabe0e/vmlinuz-6.19.0-rc1-00045-gab89060fbc92
          branch=linus/master
          job=/lkp/jobs/scheduled/lkp-ivb-d04/ltp-1SSD-ext4-syscalls-00_ioctl_pidfd06-debian-13-x86_64-20250902.cgz-ab89060fbc92-20260424-25885-171whff-0.yaml
          user=lkp
          ARCH=x86_64
          kconfig=x86_64-rhel-9.4-ltp
          commit=ab89060fbc92edd6e852bf0f533f29140afabe0e
          intremap=posted_msi
          max_uptime=14400
          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_64-92ea0639e-1_20260301.cgz
Machine:  unknown
Arch:     x86_64
RAM:      6899584 kB
Swap:     0 kB
Distro:   debian 13

────────────────────────
      TEST SUMMARY
────────────────────────
Suite:   temp_single_test
Runtime: 0.025s
Runs:    1

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

Failures:
    • ioctl_pidfd06




The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260428/[email protected]



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki