On Mon, Jun 23, 2025 at 08:26:32PM +0530, Naresh Kamboju wrote: > On Mon, 23 Jun 2025 at 18:26, Christian Brauner <brauner@xxxxxxxxxx> wrote: > > > > On Mon, Jun 23, 2025 at 05:29:38PM +0530, Naresh Kamboju wrote: > > > Regressions on arm64 devices and qemu-arm64 while running LTP controllers > > > and selftests cgroup test cases the following kernel Panic Internal error oops > > > found on the Linux next-20250623 tag. > > > > > > Regressions found on arm64 device > > > - Kernel Panic Internal oops @ LTP controllers > > > - Kernel Panic Internal oops @ selftest cgroups > > > > > > Test environments: > > > - Dragonboard-410c > > > - e850-96 > > > - FVP > > > - Juno-r2 > > > - rk3399-rock-pi-4b > > > - qemu-arm64 > > > > > > Regression Analysis: > > > - New regression? Yes > > > - Reproducibility? Yes > > > > > > Boot regression: arm64 devices kernel panic Internal error Oops at > > > pidfs_free_pid (fs/pidfs.c:162) > > > > > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > > > > > ## Test log > > > [ 67.087303] Internal error: Oops: 0000000096000004 [#1] SMP > > > [ 67.094021] Modules linked in: snd_soc_hdmi_codec venus_enc > > > venus_dec videobuf2_dma_contig pm8916_wdt qcom_wcnss_pil > > > coresight_cpu_debug coresight_tmc coresight_replicator qcom_camss > > > coresight_stm snd_soc_lpass_apq8016 msm qrtr coresight_funnel > > > snd_soc_msm8916_digital snd_soc_lpass_cpu coresight_tpiu > > > snd_soc_msm8916_analog videobuf2_dma_sg stm_core coresight_cti > > > snd_soc_lpass_platform snd_soc_apq8016_sbc venus_core > > > snd_soc_qcom_common qcom_q6v5_mss v4l2_fwnode coresight snd_soc_core > > > qcom_pil_info v4l2_async snd_compress llcc_qcom snd_pcm_dmaengine > > > ocmem qcom_q6v5 v4l2_mem2mem videobuf2_memops snd_pcm qcom_sysmon > > > drm_exec adv7511 snd_timer videobuf2_v4l2 gpu_sched qcom_common snd > > > videodev drm_dp_aux_bus qcom_glink_smem soundcore qcom_spmi_vadc > > > mdt_loader drm_display_helper qnoc_msm8916 qmi_helpers > > > videobuf2_common qcom_vadc_common qcom_spmi_temp_alarm rtc_pm8xxx > > > qcom_pon qcom_stats mc cec drm_client_lib qcom_rng rpmsg_ctrl > > > display_connector rpmsg_char phy_qcom_usb_hs socinfo drm_kms_helper > > > rmtfs_mem ramoops > > > [ 67.094437] reed_solomon fuse drm backlight ip_tables x_tables > > > [ 67.189084] CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted > > > 6.16.0-rc3-next-20250623 #1 PREEMPT > > > [ 67.194810] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) > > > [ 67.234078] pc : pidfs_free_pid (fs/pidfs.c:162) > > > > Thanks, I see the issue. I'm pushing out a fix. Please let me know if > > that reproduces in the next few days. > > Thanks. Please share the proposed fix patches. > I would like to build and test in LKFT test framework. It's in vfs-6.17.pidfs. Syzbot has a reproducer for the bug.
