Hi Michael, On 2/8/23 8:41 PM, Michael Schmitz wrote: > ... > > Following the 040 code a bit further, I suspect that happens in the 040 > writeback handler, so this may be a red herring. > >> I'll try and log such accesses caught by exception tables on 030 to see >> if they are rare enough to allow adding a kernel log message... > > Looks like this kind of event is rare enough to not trigger in a normal > boot on my 030. Have you seen the error using my modified config file? Perhaps I'm not including something that's causing (or revealing) the problem. > Please give the attached patch a try so we can confirm > (or rule out) that user space access faults from kernel mode are to > blame for your stack smashes. > ... With "0001-m68k-debug-exception-handling-data-faults-on-030.patch", Kernel Stack-Smashing 6.2.0-rc7 (no patch) 4, 3, 3 (from earlier test) 6.2.0-rc7 (new patch) 6, 2, 0 The earlier patch is not applied. Serial console log is attached. thanks -Stan
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