From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F1DC0253950; Tue, 24 Jun 2025 08:54:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750755279; cv=none; b=XRPR5hw5VFBRQXcr7WKLbstbrk1OwrA702KpINYQ2MXo4wLO6VF76BJzgnzFpUvMLERInjasgOtbAK5+DzNX2k+/5iadCpRkk1X3QPB+0vo49RfxK993XojPUEjMS6zstqRW4vnuMRwAAXDimJelgxdDUM6YNR5ML0ayv0+Dwr4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750755279; c=relaxed/simple; bh=Tw5L0Y1w0eip6mUVkK2HT5/KDLxY0+uzOBK1dmVDiD8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QNAiJKCUnjZLsuVQ3e1U+2SRjmepytOMFq9vM3Y9b4xTbrjJmr0GcMHK/DzBPOVsuDNotsZbxk7f78VL8+5I0OWZNbJsLKW5hmHGMPSvfN9mr4iyUpZc4vZLAf6R68b30fWyZAannVlKM9cbMPqwbakwoYfhYahXfTpPQdPvB9U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IjtYQUcc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IjtYQUcc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D02EC4CEE3; Tue, 24 Jun 2025 08:54:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750755278; bh=Tw5L0Y1w0eip6mUVkK2HT5/KDLxY0+uzOBK1dmVDiD8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IjtYQUccuy67bxfo4Y1SLWqLxzse9kT8EqCIF8Sa1RskHRZ+Ve8RUSr5NbdJOwncr TEWgX5BEYLo6t2NUbOBNQpydZjHSOc01HmLK0gE1BBhIcycLmdJlFqsA9/repMzIIq P+ArXTpmEGCW/26jHv0sdBDNjHw5JGQg0p3o5tiMPc8kah0T4PF49+X1kjnwV+VH+m +cfqkYsApLDQRY7+G//0CxKCTmKYziYXgEvJ2V46ZwQesAFzI16VO0K2SS3uKIzTZ9 X4rCymTEAPqyE1AQF935UKCM1dxPb8IoFwiZDI361EGjtkURXqIwUxSpyF61eLQCSq +h0axsXpzmhXw== Date: Tue, 24 Jun 2025 10:54:32 +0200 From: Christian Brauner To: Naresh Kamboju Cc: open list , lkft-triage@lists.linaro.org, Linux Regressions , linux-fsdevel@vger.kernel.org, Jann Horn , Josef Bacik , Alexander Mikhalitsyn , Jeff Layton , Daan De Meyer , Lennart Poettering , Mike Yuan , Zbigniew =?utf-8?Q?J=C4=99drzejewski-Szmek?= , Arnd Bergmann , Dan Carpenter , Anders Roxell Subject: Re: next-20250623: arm64 devices kernel panic Internal error Oops at pidfs_free_pid (fs/pidfs.c:162) Message-ID: <20250624-elastisch-errichten-a2aec974177e@brauner> References: <20250623-salat-kilowatt-3368c5e29631@brauner> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Mon, Jun 23, 2025 at 08:26:32PM +0530, Naresh Kamboju wrote: > On Mon, 23 Jun 2025 at 18:26, Christian Brauner 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 > > > > > > ## 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.