KUEP broken on FSP2?

[Eddie James]

Hi,

I'm attempting to run linux 6.1 on my FSP2, but my kernel crashes 
attempting to get into userspace. The init script works, but the first 
binary (mount) I run results in oops. Can anyone help me to debug this 
further or suggest anything?


Thanks,

Eddie


[    1.042743] kernel tried to execute user page (b7ee2000) - exploit 
attempt? (
uid: 0)
[    1.042846] BUG: Unable to handle kernel instruction fetch
[    1.042919] Faulting instruction address: 0xb7ee2000
[    1.042986] Oops: Kernel access of bad area, sig: 11 [#1]
[    1.043059] BE PAGE_SIZE=4K FSP-2
[    1.043106] Modules linked in:
[    1.043149] CPU: 0 PID: 61 Comm: mount Not tainted 
6.1.55-d23900f.ppcnf-fsp2
#1
[    1.043249] Hardware name: ibm,fsp2 476fpe 0x7ff520c0 FSP-2
[    1.043323] NIP:  b7ee2000 LR: 8c008000 CTR: 00000000
[    1.043392] REGS: bffebd83 TRAP: 0400   Not tainted 
(6.1.55-d23900f.ppcnf-fs
p2)
[    1.043491] MSR:  00000030 <IR,DR>  CR: 00001000  XER: 20000000
[    1.043579]
[    1.043579] GPR00: c00110ac bffebe63 bffebe7e bffebe88 8c008000 
00001000 0000
0d12 b7ee2000
[    1.043579] GPR08: 00000033 00000000 00000000 c139df10 48224824 
1016c314 1016
0000 00000000
[    1.043579] GPR16: 10160000 10160000 00000008 00000000 10160000 
00000000 1016
0000 1017f5b0
[    1.043579] GPR24: 1017fa50 1017f4f0 1017fa50 1017f740 1017f630 
00000000 0000
0000 1017f4f0
[    1.044101] NIP [b7ee2000] 0xb7ee2000
[    1.044153] LR [8c008000] 0x8c008000
[    1.044204] Call Trace:
[    1.044238] Instruction dump:
[    1.044279] XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 
XXXXXXXX XX
XXXXXX
[    1.044392] XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 
XXXXXXXX XX
XXXXXX
[    1.044506] ---[ end trace 0000000000000000 ]---
[    1.044568]
[    1.044590] note: mount[61] exited with irqs disabled