[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2] xen: Add acpu_sleep=s3_fake command-line option for testing
>>> On 22.05.18 at 17:25, <george.dunlap@xxxxxxxxxx> wrote: > With your code dump patch (sorry for the wrapping): > > (XEN) *** DOUBLE FAULT *** > (XEN) ----[ Xen-4.11-rc x86_64 debug=y Not tainted ]---- > (XEN) CPU: 0 > (XEN) RIP: e008:[<ffff82d080378964>] handle_exception+0x9c/0xff > (XEN) RFLAGS: 0000000000010006 CONTEXT: hypervisor > (XEN) rax: ffffc900402040d8 rbx: 0000000000000000 rcx: 0000000000000003 > (XEN) rdx: 0000000000000000 rsi: 0000000000000000 rdi: 0000000000000000 > (XEN) rbp: 000036ffbfdfbf07 rsp: ffffc90040204000 r8: 0000000000000000 > (XEN) r9: 0000000000000000 r10: 0000000000000000 r11: 0000000000000000 > (XEN) r12: 0000000000000000 r13: 0000000000000000 r14: ffffc90040207fff > (XEN) r15: 0000000000000000 cr0: 000000008005003b cr4: 0000000000002660 > (XEN) cr3: 000000019200a000 cr2: ffffc90040203ff8 > (XEN) fsb: 00007f800083d700 gsb: ffff88003dc40000 gss: 0000000000000000 > (XEN) ds: 002b es: 002b fs: 0000 gs: 0000 ss: e010 cs: e008 > (XEN) Xen code around <ffff82d080378964> (handle_exception+0x9c/0xff): > (XEN) 00 f3 90 0f ae e8 eb f9 <e8> 07 00 00 00 f3 90 0f ae e8 eb f9 83 So that's a CALL (in the RSB stashing loop), meaning presumably the page right below RSP is not present (ballooned out?) or r/o. I'm afraid we may have accumulated a rather deep stack already, making it rather cumbersome to unwind all of that and find where badness started. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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