linux-kernel - Re: kmemleak panic

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Message-ID: <d344a4f5-ba3c-6d9e-010f-0df43e81873f@free.fr>
Date:   Sat, 19 Jan 2019 11:21:16 +0100
From:   Marc Gonzalez <marc.w.gonzalez@...e.fr>
To:     Qian Cai <cai@....pw>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Robin Murphy <robin.murphy@....com>,
        Mark Rutland <mark.rutland@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Oscar Salvador <osalvador@...e.de>,
        Wei Yang <richard.weiyang@...il.com>,
        Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Sri Krishna chowdary <schowdary@...dia.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: kmemleak panic

On 18/01/2019 18:38, Qian Cai wrote:

> On 1/18/19 12:05 PM, Marc Gonzalez wrote:
>
>> On 18/01/2019 17:14, Qian Cai wrote:
>>
>>> This looks like something different from the original "invalid PFNs from
>>> pfn_to_online_page()" issue. What's your .config ?
>>
>> Here's my defconfig:
>>
>> # CONFIG_SWAP is not set
>> CONFIG_NO_HZ_IDLE=y
>> CONFIG_HIGH_RES_TIMERS=y
>> CONFIG_PREEMPT=y
>> CONFIG_IKCONFIG=y
>> CONFIG_IKCONFIG_PROC=y
>> CONFIG_LOG_BUF_SHIFT=20
>> CONFIG_BLK_DEV_INITRD=y
>> CONFIG_ARCH_QCOM=y
>> # CONFIG_EFI is not set
>> # CONFIG_SUSPEND is not set
>> CONFIG_PM=y
>> # CONFIG_MQ_IOSCHED_DEADLINE is not set
>> # CONFIG_MQ_IOSCHED_KYBER is not set
>> CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
>> CONFIG_DEVTMPFS=y
>> CONFIG_DEVTMPFS_MOUNT=y
>> # CONFIG_BLK_DEV is not set
>> # CONFIG_INPUT_KEYBOARD is not set
>> # CONFIG_INPUT_MOUSE is not set
>> # CONFIG_SERIO_SERPORT is not set
>> CONFIG_VT_HW_CONSOLE_BINDING=y
>> CONFIG_LEGACY_PTY_COUNT=16
>> CONFIG_SERIAL_8250=y
>> CONFIG_SERIAL_MSM=y
>> CONFIG_SERIAL_MSM_CONSOLE=y
>> CONFIG_SERIAL_DEV_BUS=y
>> # CONFIG_HW_RANDOM is not set
>> # CONFIG_HWMON is not set
>> CONFIG_REGULATOR=y
>> CONFIG_REGULATOR_FIXED_VOLTAGE=y
>> CONFIG_REGULATOR_QCOM_SMD_RPM=y
>> # CONFIG_HID is not set
>> # CONFIG_USB_SUPPORT is not set
>> # CONFIG_COMMON_CLK_XGENE is not set
>> CONFIG_COMMON_CLK_QCOM=y
>> # CONFIG_QCOM_A53PLL is not set
>> # CONFIG_QCOM_CLK_APCS_MSM8916 is not set
>> CONFIG_QCOM_CLK_SMD_RPM=y
>> CONFIG_MSM_GCC_8998=y
>> CONFIG_HWSPINLOCK=y
>> CONFIG_HWSPINLOCK_QCOM=y
>> CONFIG_MAILBOX=y
>> CONFIG_QCOM_APCS_IPC=y
>> CONFIG_RPMSG_QCOM_GLINK_RPM=y
>> CONFIG_RPMSG_QCOM_GLINK_SMEM=y
>> CONFIG_RPMSG_QCOM_SMD=y
>> CONFIG_RPMSG_VIRTIO=y
>> CONFIG_QCOM_COMMAND_DB=y
>> CONFIG_QCOM_SMEM=y
>> CONFIG_QCOM_SMD_RPM=y
>> CONFIG_TMPFS=y
>> CONFIG_DEBUG_INFO=y
>> CONFIG_DEBUG_KERNEL=y
>> CONFIG_DEBUG_KMEMLEAK=y
>> CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE=4000
>> CONFIG_FUNCTION_TRACER=y
> 
> This is truncated. I'll need your whole .config file, so I can try to reproduce
> it here on an arm64 ThunderX2 server.

Smirk. It's not truncated, it's condensed ;-)

It's a defconfig, as generated by make savedefconfig.

https://stackoverflow.com/questions/27899104/how-to-create-a-defconfig-file-from-a-config

Save it to e.g. arch/arm64/configs/marc_defconfig and then you can
just run 'make marc_defconfig' to generate the .config

Regards.