Re: [mainline]Kernel Boot Warings at arch/powerpc/mm/mem.c:341

Sat, 18 Oct 2025 07:53:10 -0700 

Hello Venkat,

On 16/10/25 15:21, Sourabh Jain wrote:



On 10/10/25 11:15, Venkat Rao Bagalkote wrote:

Greetings!!!



IBM CI has reported kernel boot warnings on the mainline kernel on 
IBM Power11 system.



Attached is the .config file.

Traces:



[    0.040098] plpks: POWER LPAR Platform KeyStore is not supported 
or enabled

[    0.043041] ------------[ cut here ]------------

[    0.043045] WARNING: CPU: 0 PID: 1 at arch/powerpc/mm/mem.c:341 
add_system_ram_resources+0xfc/0x180

[    0.043058] Modules linked in:

[    0.043065] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 
6.17.0-auto-12607-g5472d60c129f #1 VOLUNTARY
[    0.043072] Hardware name: IBM,9080-HEX Power11 (architected) 
0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries
[    0.043078] NIP:  c00000000201de3c LR: c00000000201de34 CTR: 
0000000000000000
[    0.043082] REGS: c000000127cef8a0 TRAP: 0700   Not tainted 
(6.17.0-auto-12607-g5472d60c129f)
[    0.043088] MSR:  8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 
84000840  XER: 20040010

[    0.043099] CFAR: c00000000017eed0 IRQMASK: 0

[    0.043099] GPR00: c00000000201de34 c000000127cefb40 
c0000000016a8100 0000000000000001
[    0.043099] GPR04: c00000012005aa00 0000000020000000 
c000000002b705c8 0000000000000000
[    0.043099] GPR08: 000000007fffffff fffffffffffffff0 
c000000002db8100 000000011fffffff
[    0.043099] GPR12: c00000000201dd40 c000000002ff0000 
c0000000000112bc 0000000000000000
[    0.043099] GPR16: 0000000000000000 0000000000000000 
0000000000000000 0000000000000000
[    0.043099] GPR20: 0000000000000000 0000000000000000 
0000000000000000 c0000000015a3808
[    0.043099] GPR24: c00000000200468c c000000001699888 
0000000000000106 c0000000020d1950
[    0.043099] GPR28: c0000000014683f8 0000000081000200 
c0000000015c1868 c000000002b9f710
[    0.043138] NIP [c00000000201de3c] 
add_system_ram_resources+0xfc/0x180

[    0.043143] LR [c00000000201de34] add_system_ram_resources+0xf4/0x180
[    0.043148] Call Trace:

[    0.043150] [c000000127cefb40] [c00000000201de34] 
add_system_ram_resources+0xf4/0x180 (unreliable)
[    0.043157] [c000000127cefba0] [c000000000010eb4] 
do_one_initcall+0x60/0x36c
[    0.043162] [c000000127cefc80] [c0000000020068cc] 
do_initcalls+0x120/0x220
[    0.043169] [c000000127cefd30] [c000000002006cbc] 
kernel_init_freeable+0x23c/0x390
[    0.043174] [c000000127cefde0] [c0000000000112e8] 
kernel_init+0x34/0x26c
[    0.043178] [c000000127cefe50] [c00000000000df7c] 
ret_from_kernel_user_thread+0x14/0x1c

[    0.043181] ---- interrupt: 0 at 0x0

[    0.043186] Code: 3d02010c e9210028 e9410020 fb840010 fba40018 
38685b48 3929ffff f9440000 f9240008 4a161035 60000000 54630ffe 
<0b030000> 39210028 39400000 39010020

[    0.043197] ---[ end trace 0000000000000000 ]---
[    0.043202] ------------[ cut here ]------------

[    0.043203] WARNING: CPU: 0 PID: 1 at arch/powerpc/mm/mem.c:341 
add_system_ram_resources+0xfc/0x180

[    0.043209] Modules linked in:

[    0.043212] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W      
     6.17.0-auto-12607-g5472d60c129f #1 VOLUNTARY

[    0.043217] Tainted: [W]=WARN

[    0.043219] Hardware name: IBM,9080-HEX Power11 (architected) 
0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries
[    0.043223] NIP:  c00000000201de3c LR: c00000000201de34 CTR: 
0000000000000000
[    0.043226] REGS: c000000127cef8a0 TRAP: 0700   Tainted: G W       
    (6.17.0-auto-12607-g5472d60c129f)
[    0.043229] MSR:  8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 
84000440  XER: 20040010

[    0.043237] CFAR: c00000000017eed0 IRQMASK: 0

[    0.043237] GPR00: c00000000201de34 c000000127cefb40 
c0000000016a8100 0000000000000001
[    0.043237] GPR04: c00000012005a9c0 0000000020000000 
c000000002b705c8 0000000080000000
[    0.043237] GPR08: 000000257fffffff fffffffffffffff0 
c000000002db8100 000000011fffffff
[    0.043237] GPR12: c00000000201dd40 c000000002ff0000 
c0000000000112bc 0000000000000000
[    0.043237] GPR16: 0000000000000000 0000000000000000 
0000000000000000 0000000000000000
[    0.043237] GPR20: 0000000000000000 0000000000000000 
0000000000000000 c0000000015a3808
[    0.043237] GPR24: c00000000200468c c000000001699888 
0000000000000106 c0000000020d1950
[    0.043237] GPR28: c0000000014683f8 0000000081000200 
c0000000015c1868 c000000002b9f710
[    0.043271] NIP [c00000000201de3c] 
add_system_ram_resources+0xfc/0x180

[    0.043276] LR [c00000000201de34] add_system_ram_resources+0xf4/0x180
[    0.043280] Call Trace:

[    0.043281] [c000000127cefb40] [c00000000201de34] 
add_system_ram_resources+0xf4/0x180 (unreliable)
[    0.043287] [c000000127cefba0] [c000000000010eb4] 
do_one_initcall+0x60/0x36c
[    0.043291] [c000000127cefc80] [c0000000020068cc] 
do_initcalls+0x120/0x220
[    0.043296] [c000000127cefd30] [c000000002006cbc] 
kernel_init_freeable+0x23c/0x390
[    0.043301] [c000000127cefde0] [c0000000000112e8] 
kernel_init+0x34/0x26c
[    0.043305] [c000000127cefe50] [c00000000000df7c] 
ret_from_kernel_user_thread+0x14/0x1c

[    0.043308] ---- interrupt: 0 at 0x0

[    0.043311] Code: 3d02010c e9210028 e9410020 fb840010 fba40018 
38685b48 3929ffff f9440000 f9240008 4a161035 60000000 54630ffe 
<0b030000> 39210028 39400000 39010020

[    0.043322] ---[ end trace 0000000000000000 ]---
[    0.043520] kprobes: kprobe jump-optimization is enabled. Al




Please try the below fix:
https://lore.kernel.org/all/[email protected]/

Thanks,
Sourabh Jain
























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