Messages in this thread | | | Date | Mon, 28 Jul 2008 12:39:18 -0700 | From | Mike Travis <> | Subject | Re: [crash] Re: [PATCH 0/4] x86_64: Optimize percpu accesses |
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Ingo Molnar wrote: > ok, i have integrated tip/x86/percpu-zerobased into tip/master briefly, > but it blew up almost immediately in testing, on two boxes. > > one bad config is: > > http://redhat.com/~mingo/misc/config-Mon_Jul_28_17_35_00_CEST_2008.bad > > failure pattern: it booted up fine to userspace and seemed function, but > then produced a spontaneous reboot while building a kernel, without any > log entries. > > other bad config is: > > http://redhat.com/~mingo/misc/config-Mon_Jul_28_17_30_39_CEST_2008.bad > > failure pattern: early crash at: > > PANIC: early exception 0e rip 10:fffffff817dfc1a error 0 cr2 28 > > which corresponds to: > > ffffffff817dfc0f <machine_specific_memory_setup>: > ffffffff817dfc0f: 48 8b 05 aa cf 04 00 mov 315306(%rip),%rax > # ffffffff8182cbc0 <x86_quirks> > ffffffff817dfc16: 55 push %rbp > ffffffff817dfc17: 48 89 e5 mov %rsp,%rbp > ffffffff817dfc1a: 48 8b 40 28 mov 0x28(%rax),%rax [*] > ffffffff817dfc1e: 48 85 c0 test %rax,%rax > > i.e. RAX was zero. > > i've pushed out the tip/tmp.x86/percpu-zerobased.bad branch which shows > the exact kernel that failed. It was generated by: > > git-checkout tip/master > git-merge tip/x86/percpu-zerobased > > Ingo
Ok, thanks, I'll take a look. There were some questions that I had (and I should have RFC'd the patch since there are still questions.)
Mike
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