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Date: Thu, 13 Jun 2024 12:52:06 +0200
From: Pavel Machek <pavel@ucw.cz>
To: Jia-hao Bai =?utf-8?B?KOeZveWutuixqik=?= <Jia-hao.Bai@mediatek.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"rafael@kernel.org" <rafael@kernel.org>,
	Iverlin Wang =?utf-8?B?KOeOi+iLs+mclik=?= <Iverlin.Wang@mediatek.com>,
	Boy Wu =?utf-8?B?KOWQs+WLg+iqvCk=?= <Boy.Wu@mediatek.com>,
	Seiya Wang =?utf-8?B?KOeOi+i/uuWQmyk=?= <seiya.wang@mediatek.com>,
	Dengjun Su =?utf-8?B?KOiLj+mCk+WGmyk=?= <Dengjun.Su@mediatek.com>,
	Win Yeh =?utf-8?B?KOiRieaYjOWAqyk=?= <Win.Yeh@mediatek.com>,
	Sowell Peng =?utf-8?B?KOW9remmluWBiSk=?= <Sowell.Peng@mediatek.com>,
	Richard-CC Yang =?utf-8?B?KOaliuiBt+mKkyk=?= <Richard-CC.Yang@mediatek.com>
Subject: Re: [BUG] Kernel panic when using Hibernation on kernel 6.1.25
Message-ID: <ZmrPVg6PwlYLRiSS@duo.ucw.cz>
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Hi!

> I encountered a kernel panic when using the Hibernation on kernel version=
 6.1.25. Below are the details of the issue:
>=20
> **Description:**
> When I enable CONFIG_HIBERNATION and assign a specific partition for hibe=
rnation resuming and perform a specific operation, the system crashes with =
a kernel panic.
>=20
> CONFIG_HIBERNATION=3Dy
> CONFIG_PM_STD_PARTITION=3D"/dev/mmcblk0p16"
>=20
> **Steps to Reproduce:**
> 1.	Set printk to level 8: ` echo 8 > /proc/sys/kernel/printk`
> 2.	Set up the swap partition: ` mkswap /dev/mmcblk0p16`
> 3.	Enable the swap partition: ` swapon -p -3 /dev/mmcblk0p16`
> 4.	Configure hibernation resuming settings: ` echo "/dev/mmcblk0p16" > /s=
ys/power/resume`
> 5.	Configure hibernation mode:` echo reboot > /sys/power/disk`
> 6.	Perform the operation: ` echo disk > /sys/power/state`
> 7.	Observe the kernel panic
>=20
>=20
> **Expected Behavior:**
> The operation should complete successfully without causing a kernel panic.
>=20
> **Actual Behavior:**
> The system crashes with a kernel panic.
>=20
> **Environment:**
> - Kernel version: 6.1.25
> - Distribution: Yocto 4.0 32bit/Kernel 6.1.25 32bit
> - Hardware: Arm Cortex A55, 1GB RAM

We'd need to know way more about the hardware. Also testing with
latest mainline would be useful.

Best regards,
							Pavel
--=20
People of Russia, stop Putin before his war on Ukraine escalates.

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