Subject: [Bug 207129] New: PowerMac G4 DP (5.6.2 debug kernel + inline KASAN) freezes shortly after booting with "do_IRQ: stack overflow: 1760"

From: [email-masked]
Date: Sun, 05 Apr 2020 21:32:40 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=207129

            Bug ID: 207129
           Summary: PowerMac G4 DP (5.6.2 debug kernel + inline KASAN)
                    freezes shortly after booting with "do_IRQ: stack
                    overflow: 1760"
           Product: Platform Specific/Hardware
           Version: 2.5
    Kernel Version: 5.6.2
          Hardware: PPC-32
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: PPC-32
          Assignee: [email-masked]
          Reporter: [email-masked]
                CC: [email-masked]
        Regression: No

Created attachment 288221
  --> https://bugzilla.kernel.org/attachment.cgi?id=288221&action=edit
kernel .config (5.6.2, INLINE KASAN, PowerMac G4 DP)

Was trying to do some testing with the PowerMac G4 DP again, running a 5.6.2
debug kernel w. KASAN INLINE. The G4 boots fine, but crashes shortly afterwards
when using it, leaving no stack trace, but only this message on the screen:

do_IRQ: stack overflow: 1760
CPU: 0 PID: 209 Comm: rsync Tained: G        W        5.6.2-PowerMacG4+ #3
Call Trace:

120 seconds panic timer does not kick in. I have to manually switch off/switch
on the G4.

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