Bug 216238

Summary:	Kernel 5.10.129 fails to boot on a Talos 2 with HASH MMU (PPC_RADIX_MMU not set) with CONFIG_PAGE_POISONING=y
Product:	Platform Specific/Hardware	Reporter:	Erhard F. (erhard_f)
Component:	PPC-64	Assignee:	platform_ppc-64
Status:	NEW ---
Severity:	normal
Priority:	P1
Hardware:	PPC-64
OS:	Linux
See Also:	https://bugzilla.kernel.org/show_bug.cgi?id=216183
Kernel Version:	5.10.129	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	kernel dmesg (kernel 5.10.129, without PAGE_POISONING, Talos II) kernel .config (kernel 5.10.129, with PAGE_POISONING, Talos II)

Description Erhard F. 2022-07-11 17:56:06 UTC

Created attachment 301393 [details]
kernel dmesg (kernel 5.10.129, without PAGE_POISONING, Talos II)

Found that out during investigating bug #216183 closer.

On kernel 5.10.x LTS the Talos 2 boots fine with HASH MMU used. But the same kernel .config fails to boot when CONFIG_PAGE_POISONING=y is set and used. I get no netconsole output then, only a reboot after a while.

Comment 1 Erhard F. 2022-07-11 17:57:34 UTC

Created attachment 301394 [details]
kernel .config (kernel 5.10.129, with PAGE_POISONING, Talos II)

Comment 2 Erhard F. 2022-07-11 18:00:22 UTC

Some data about the machine:

 # inxi -bZ
System:
  Host: T1000 Kernel: 5.10.129-gentoo-P9 ppc64 bits: 64 Console: pty pts/0
    Distro: Gentoo Base System release 2.8
Machine:
  Type: PPC System: T2P9D01 REV 1.01 details: N/A
CPU:
  Info: 2x 4-core POWER9 altivec supported [MT MCP SMP] speed (MHz):
    avg: 2561 min/max: 2154/3800
Graphics:
  Device-1: AMD Turks XT [Radeon HD 6670/7670] driver: radeon v: kernel
  Device-2: ASPEED Graphics Family driver: N/A
  Display: x11 server: X.Org 21.1.1 driver: loaded: radeon
    resolution: 1440x900~60Hz
  OpenGL: renderer: llvmpipe (LLVM 14.0.4 128 bits) v: 4.5 Mesa 22.0.5
Network:
  Device-1: Broadcom NetXtreme BCM5719 Gigabit Ethernet PCIe driver: tg3
  Device-2: Broadcom NetXtreme BCM5719 Gigabit Ethernet PCIe driver: tg3
Drives:
  Local Storage: total: 447.13 GiB used: 10.69 GiB (2.4%)
Info:
  Processes: 345 Uptime: 2h 18m Memory: 61.78 GiB used: 1.06 GiB (1.7%)
  Shell: Bash inxi: 3.3.12

 # /home/ef # lspci 
0000:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0000:01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Turks XT [Radeon HD 6670/7670]
0000:01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Turks HDMI Audio [Radeon HD 6500/6600 / 6700M Series]
0001:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0001:01:00.0 Non-Volatile memory controller: Phison Electronics Corporation Device 5008 (rev 01)
0002:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0003:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0003:01:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02)
0004:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0004:01:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
0004:01:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
0005:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0005:01:00.0 PCI bridge: ASPEED Technology, Inc. AST1150 PCI-to-PCI Bridge (rev 04)
0005:02:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 41)
0030:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0031:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0032:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)
0033:00:00.0 PCI bridge: IBM POWER9 Host Bridge (PHB4)