linux-kernel - Re: WARN_ON_ONCE(work > weight) in napi

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Message-ID: <87wp7oia6j.fsf@kamboji.qca.qualcomm.com>
Date:   Tue, 4 Jul 2017 13:49:53 +0000
From:   Kalle Valo <kvalo@....qualcomm.com>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>
CC:     "ath10k@...ts.infradead.org" <ath10k@...ts.infradead.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: WARN_ON_ONCE(work > weight) in napi_poll()

Andrey Ryabinin <aryabinin@...tuozzo.com> writes:

> I occasionally hit WARN_ON_ONCE(work > weight); in napi_poll() on a
> laptop with ath10k card.
>
>
> [37207.593370] ------------[ cut here ]------------
> [37207.593380] WARNING: CPU: 0 PID: 7 at ../net/core/dev.c:5274
> net_rx_action+0x258/0x360
> [37207.593381] Modules linked in: snd_hda_codec_realtek snd_soc_skl
> snd_hda_codec_generic snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp
> snd_hda_ext_core snd_soc_sst_match snd_soc_core rtsx_pci_sdmmc
> mmc_core snd_pcm_dmaengine x86_pkg_temp_thermal snd_hda_intel uvcvideo
> kvm_intel videobuf2_vmalloc kvm snd_hda_codec snd_hwdep btusb
> videobuf2_memops btintel snd_hda_core videobuf2_v4l2 bluetooth
> irqbypass snd_pcm videobuf2_core crc32c_intel videodev mei_me mei
> rtsx_pci intel_lpss_pci intel_lpss_acpi intel_vbtn intel_lpss mfd_core
> tpm_tis intel_hid tpm_tis_core tpm efivarfs
> [37207.593430] CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 4.11.7 #28
> [37207.593432] Hardware name: Dell Inc. XPS 13 9360/0839Y6, BIOS 1.3.5 05/08/2017

What firmware and hardware versions exactly? The dmesg output when
ath10k loads is preferred. As you are using XPS 13 I'm guessing it's one
of QCA6174 family.

-- 
Kalle Valo