From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 Description of problem: SMP kernel unstable. Randomly placed oopses and/or application segfaults when able to boot fully. Cannot duplicate any single instance reliably, but can get errors on demand. Single processor kernel works fine on same machine. ACPI on/off, pci=noacpi doesn't matter. Motherboard is a Tyan Tiger MPX with USB support on the mobo (earlier Tiger MPX mobos had no USB support because 760MPX chipset is broken w.r.t. USB). BIOS version is 4.0.5, which is the latest and greatest at the time of this writing. Version-Release number of selected component (if applicable): kernel-smp-2.4.21-20.1.2024.2.1.nptl How reproducible: Always Steps to Reproduce: 1. Boot SMP kernel on Tyan Tiger MPX 2. Experience random oopses during boot and/or app failures afterward. 3. Actual Results: Seemingly random oopses and segfaults. Expected Results: No problems. Additional info: Attaching lspci output
Created attachment 93102 [details] output of "lspci -v"
Can you post some of the oopses/crashes?
Can post oopses but can't run them through ksymoops because ksymoops isn't included in serern. Will the stock one mentioned in the ksymoops README work for this beta kernel?
the kernel itself will ksymoops the oopses, if you do it by hand they just get corrupted
Created attachment 93271 [details] oops number 1 oops in ext3_write_super - looks bad, fellas. Only occurs when booted into SMP kernel. System ran without a hitch for a week with UP kernel.
Created attachment 93272 [details] oops oops in ext3_new_block - another nasty looking beast.
Installing RHES on this same machine generated a CPU1 machine check exception. So, I suspect that the hardware is to blame - probably the second CPU is toast (not hard to do with exposed silicon without heatspreader protection and a cranky heatsink mechanism). It would be nice if the Severn/Cambridge kernels also trapped these exceptions well enough to report this.
Closing as working for us, then.