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Re: [Xen-devel] [xen-unstable-smoke test] 127225: regressions - FAIL


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Tue, 4 Sep 2018 00:12:05 +0100
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  • Cc: Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>
  • Delivery-date: Mon, 03 Sep 2018 23:12:19 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Openpgp: preference=signencrypt

On 03/09/18 23:41, osstest service owner wrote:
> flight 127225 xen-unstable-smoke real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/127225/
>
> Regressions :-(
>
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>  test-amd64-amd64-xl-qemuu-debianhvm-i386 10 debian-hvm-install fail REGR. 
> vs. 127212

Sep  3 21:46:47.330655 (XEN) MMIO emulation failed (1): d1v0 32bit @ 
0000:00100000 -> 55 89 e5 53 83 ec 10 8b 55 0c b8 20 02 08 00 8b
Sep  3 21:46:47.438712 (XEN) d1v0 Triple fault - invoking HVM shutdown action 1
Sep  3 21:46:47.438779 (XEN) *** Dumping Dom1 vcpu#0 state: ***
Sep  3 21:46:47.438830 (XEN) ----[ Xen-4.12-unstable  x86_64  debug=y   Not 
tainted ]----
Sep  3 21:46:47.450737 (XEN) CPU:    2
Sep  3 21:46:47.450800 (XEN) RIP:    0000:[<0000000000100000>]
Sep  3 21:46:47.450850 (XEN) RFLAGS: 0000000000010002   CONTEXT: hvm guest 
(d1v0)
Sep  3 21:46:47.462716 (XEN) rax: 0000000000000000   rbx: 00000000001a8000   
rcx: 0000000000000000
Sep  3 21:46:47.474720 (XEN) rdx: 0000000000000000   rsi: 0000000000000000   
rdi: 0000000000000000
Sep  3 21:46:47.474788 (XEN) rbp: 0000000000000000   rsp: 0000000000000000   
r8:  0000000000000000
Sep  3 21:46:47.486712 (XEN) r9:  0000000000000000   r10: 0000000000000000   
r11: 0000000000000000
Sep  3 21:46:47.486782 (XEN) r12: 0000000000000000   r13: 0000000000000000   
r14: 0000000000000000
Sep  3 21:46:47.498720 (XEN) r15: 0000000000000000   cr0: 0000000000000011   
cr4: 0000000000000000
Sep  3 21:46:47.510700 (XEN) cr3: 0000000000000000   cr2: 0000000000000000
Sep  3 21:46:47.510764 (XEN) fsb: 0000000000000000   gsb: 0000000000000000   
gss: 0000000000000000
Sep  3 21:46:47.522513 (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 
0000   cs: 0000


andrew@andrew-laptop:~/xen.git$ objdump -d
tools/firmware/hvmloader/hvmloader | head

tools/firmware/hvmloader/hvmloader:     file format elf32-i386


Disassembly of section .text:

00100000 <hypercall_xen_version>:
  100000:    55                       push   %ebp
  100001:    89 e5                    mov    %esp,%ebp
  100003:    53                       push   %ebx

Sorry Roger, but your linker change has caused _start not to be at the
beginning of resulting binary.

The crash is caused by using the stack before a stack is set up.

~Andrew

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