[Bug 213079] [bisected] IRQ problems and crashes on a PowerMac G5 with 5.12.3

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213079

--- Comment #11 from Erhard F. (erhard_f at mailbox.org) ---
Created attachment 297473
  --> https://bugzilla.kernel.org/attachment.cgi?id=297473&action=edit
dmesg (5.13-rc6 + DEBUG_VM_PGTABLE, PowerMac G5 11,2)

The trace got some additional data with DEBUG_VM_PGTABLE=y, slub_debug=P and
page_poison=1:

[...]
irq 63: nobody cared (try booting with the "irqpoll" option)
Call Trace:
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W        
5.13.0-rc6-PowerMacG5+ #2
[c00000000fff7ae0] [c00000000054eafc] .dump_stack+0xe0/0x13c (unreliable)
[c00000000fff7b80] [c0000000000e1428] .__report_bad_irq+0x34/0xf0
[c00000000fff7c20] [c0000000000e1310] .note_interrupt+0x258/0x300
[c00000000fff7ce0] [c0000000000dd58c] .handle_irq_event_percpu+0x64/0x90
[c00000000fff7d70] [c0000000000dd5fc] .handle_irq_event+0x44/0x70
[c00000000fff7e00] [c0000000000e2a14] .handle_fasteoi_irq+0xac/0x158
[c00000000fff7ea0] [c0000000000dc648] .generic_handle_irq+0x38/0x58
[c00000000fff7f10] [c000000000011688] .__do_irq+0x15c/0x238
[c00000000fff7f90] [c00000000001207c] .do_IRQ+0x180/0x188
[c0000000012db810] [c000000000011f9c] .do_IRQ+0xa0/0x188
[c0000000012db8b0] [c000000000007f94]
hardware_interrupt_common_virt+0x1a4/0x1b0
--- interrupt: 500 at .power4_idle_nap+0x30/0x34
NIP:  c00000000002cc04 LR: c000000000016828 CTR: c000000000016768
REGS: c0000000012db920 TRAP: 0500   Tainted: G        W         
(5.13.0-rc6-PowerMacG5+)
MSR:  9000000000009032 <SF,HV,EE,ME,IR,DR,RI>  CR: 44082242  XER: 00000000
IRQMASK: 0 
GPR00: c0000000000167dc c0000000012dbbc0 c0000000012df700 0000000000000001 
GPR04: 0000000000000000 0000000000000000 0000000000000002 9000000000049032 
GPR08: 0000000000000001 c0000000011b3b80 0000000000000001 0000000000000016 
GPR12: 0000000044082242 c0000000023a6000 000000000014aa88 00000000ffb30100 
GPR16: 0000000001e7b8da 0000000001e7bd5f 0000000001e7b9f0 0000000001e88d8d 
GPR20: 0000000001e7bd3d 0000000001e7b98b 0000000001e7bbb2 0000000001e7b89c 
GPR24: 000000000270f700 c000000001081008 c000000000a7c02d 0000000000000000 
GPR28: c0000000012edb9c c0000000011b3b80 9000000000009032 c0000000012ed985 
NIP [c00000000002cc04] .power4_idle_nap+0x30/0x34
LR [c000000000016828] .power4_idle+0xc0/0xe8
--- interrupt: 500
[c0000000012dbbc0] [c0000000000167dc] .power4_idle+0x74/0xe8 (unreliable)
handlers:
[c0000000012dbc40] [c00000000001665c] .arch_cpu_idle+0x80/0x18c
[c0000000012dbcc0] [c00000000081f058] .default_idle_call+0x7c/0xd0
[c0000000012dbd30] [c0000000000a7bcc] .do_idle+0x128/0x140
[c0000000012dbdd0] [c0000000000a7eb4] .cpu_startup_entry+0x28/0x2c
[c0000000012dbe40] [c000000000010044] .rest_init+0x1b0/0x1bc
[c0000000012dbec0] [c0000000010047f4] .start_kernel+0x934/0x9b8
[c0000000012dbf90] [c00000000000b390] start_here_common+0x1c/0x8c
[<000000001553d54b>] .nvme_irq
[<000000001553d54b>] .nvme_irq
Disabling IRQ #63

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