Re: [Xen-devel] [xen-unstable-smoke test] 92827: regressions - FAIL

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> Sent: 26 April 2016 14:14
> To: osstest service owner
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Wei Liu; Jan Beulich; Paul Durrant;
> Andrew Cooper
> Subject: Re: [Xen-devel] [xen-unstable-smoke test] 92827: regressions - FAIL
> 
> CC Jan, Paul and Andrew
> 
> On Tue, Apr 26, 2016 at 01:01:32PM +0000, osstest service owner wrote:
> > flight 92827 xen-unstable-smoke real [real]
> > http://logs.test-lab.xenproject.org/osstest/logs/92827/
> >
> > Regressions :-(
> >
> > Tests which did not succeed and are blocking,
> > including tests which could not be run:
> >  test-amd64-amd64-xl-qemuu-debianhvm-i386 9 debian-hvm-install fail
> REGR. vs. 92731
> 
> http://logs.test-lab.xenproject.org/osstest/logs/92827/test-amd64-amd64-
> xl-qemuu-debianhvm-i386/serial-fiano1.log
> 
> Apr 26 10:56:02.287445 (d1) HVM Loader
> Apr 26 10:56:02.327467 (d1) Detected Xen v4.7-unstable
> Apr 26 10:56:02.335490 (XEN) Assertion 'r->type == IOREQ_TYPE_COPY' failed
> at vmsi.c:352
> Apr 26 10:56:02.335531 (XEN) ----[ Xen-4.7-unstable  x86_64  debug=y  Not
> tainted ]----
> Apr 26 10:56:02.343504 (XEN) CPU:    3
> Apr 26 10:56:02.343534 (XEN) RIP:    e008:[<ffff82d0801e2d3c>]
> vmsi.c#msixtbl_range+0x6e/0xab
> Apr 26 10:56:02.351504 (XEN) RFLAGS: 0000000000010297   CONTEXT:
> hypervisor (d1v0)
> Apr 26 10:56:02.359499 (XEN) rax: 000000000000000c   rbx: ffff82d08033c0a8
> rcx: ffff83026bd0e608
> Apr 26 10:56:02.367502 (XEN) rdx: 0000000000000000   rsi: 00000000003bfa0c
> rdi: 0000000000000000
> Apr 26 10:56:02.367543 (XEN) rbp: ffff830277eb7ae8   rsp: ffff830277eb7ac8
> r8:  0000000000000001
> Apr 26 10:56:02.375474 (XEN) r9:  00000000deadf00d   r10: ffff82d0802eebc0
> r11: 0000000000000000
> Apr 26 10:56:02.383492 (XEN) r12: 00000000003bfa0c   r13: ffff83007dce3000
> r14: ffff830277eb0000
> Apr 26 10:56:02.391501 (XEN) r15: ffff83007dce3000   cr0: 000000008005003b
> cr4: 00000000001526e0
> Apr 26 10:56:02.399556 (XEN) cr3: 000000026bc92000   cr2: 0000000000000000
> Apr 26 10:56:02.399591 (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 
> 0000
> cs: e008
> Apr 26 10:56:02.407619 (XEN) Xen code around <ffff82d0801e2d3c>
> (vmsi.c#msixtbl_range+0x6e/0xab):
> Apr 26 10:56:02.415619 (XEN)  00 bd 9f 09 00 00 01 74 <02> 0b 41 0f b6 85 9e 
> 09
> 00 00 ba 00 00 00 00 a8
> Apr 26 10:56:02.423608 (XEN) Xen stack trace from rsp=ffff830277eb7ac8:
> Apr 26 10:56:02.423644 (XEN)    ffff830277eb7b58 ffff830259140170
> 00000000003bfa0c ffff830277eb7b58
> Apr 26 10:56:02.431612 (XEN)    ffff830277eb7b18 ffff82d0801d65ce
> ffff830277eb7b18 ffff830259140170
> Apr 26 10:56:02.439615 (XEN)    000000000000000b ffff83026bd0e000
> ffff830277eb7b48 ffff82d0801d696e
> Apr 26 10:56:02.447640 (XEN)    00000000003bfa0c 00000000003bfa0c
> ffff820080000000 0000000000000008
> Apr 26 10:56:02.455587 (XEN)    ffff830277eb7b78 ffff82d0801d6b2c
> 00000000003bfa0c 0000000000000000
> Apr 26 10:56:02.463604 (XEN)    0000000100000001 0100000000000000
> ffff830277eb7c28 ffff82d0801cd3a1
> Apr 26 10:56:02.463643 (XEN)    ffff830277eb7b98 ffff83007dce3000
> ffff830277eb7bf4 ffff830277eb0000
> Apr 26 10:56:02.471610 (XEN)    ffff830277eb7be4 ffff82d0801306d1
> ffff830277eb7c08 0000000400000004
> Apr 26 10:56:02.479606 (XEN)    ffff830277eb7c84 0000000000000a0c
> 00000000000003bf 0000000100000008
> Apr 26 10:56:02.487633 (XEN)    ffff82d08027ae11 ffff83026bd0eaa4
> 0000000000000000 0000000000000008
> Apr 26 10:56:02.495606 (XEN)    0000000000000009 ffff820080000000
> ffff830277eb7f18 ffff820080000000
> Apr 26 10:56:02.503633 (XEN)    ffff830277eb7c38 ffff82d0801cf050
> ffff830277eb7c58 ffff82d0801cf48d
> Apr 26 10:56:02.503674 (XEN)    0000000000000080 00000000003bfa0c
> ffff830277eb7ce8 ffff82d08018a5f0
> Apr 26 10:56:02.511615 (XEN)    0000000000000001 0000000000000000
> ffff83026bd0e000 0000000077eb7e0a
> Apr 26 10:56:02.519618 (XEN)    ffff830277eb7cb8 ffff82d0801cb478
> ffff830277eb7d48 ffff830277eb7d68
> Apr 26 10:56:02.527606 (XEN)    0000000000000000 ffff830259140190
> ffff830277eb7cd8 ffff830277eb7f18
> Apr 26 10:56:02.535607 (XEN)    ffff83007dce3000 0000000000000000
> ffff830277eb7f18 ffff820080000000
> Apr 26 10:56:02.543607 (XEN)    ffff830277eb7dc8 ffff82d08013d7db
> ffff830277eb7d68 ffff830277eb7e0a
> Apr 26 10:56:02.551600 (XEN)    ffff830277eb7d38 ffff830259140190
> ffff830277eb7d68 ffff830277eb7d90
> Apr 26 10:56:02.551638 (XEN)    ffff830277eb7d60 ffff830277eb7d68
> ffff830277eb0000 ffff82d0801d69b9
> Apr 26 10:56:02.559620 (XEN) Xen call trace:
> Apr 26 10:56:02.559651 (XEN)    [<ffff82d0801e2d3c>]
> vmsi.c#msixtbl_range+0x6e/0xab
> Apr 26 10:56:02.567604 (XEN)    [<ffff82d0801d65ce>]
> intercept.c#hvm_mmio_accept+0x6a/0xe4
> Apr 26 10:56:02.575611 (XEN)    [<ffff82d0801d696e>]
> hvm_find_io_handler+0x65/0x89
> Apr 26 10:56:02.583602 (XEN)    [<ffff82d0801d6b2c>]
> hvm_mmio_internal+0x37/0x61

Ah. Crap. I forgot about this path....

Jan,

  I think the best way round this is to have vmsi register as an full io 
interceptor so its accept method can use the passed in ioreq, which is faked up 
to be a copy in this case. Either that or get rid of hvm_mmio_internal() 
altogether.

  Paul

> Apr 26 10:56:02.583638 (XEN)    [<ffff82d0801cd3a1>]
> hvm.c#__hvm_copy+0x130/0x3c0
> Apr 26 10:56:02.591618 (XEN)    [<ffff82d0801cf050>]
> hvm_copy_from_guest_virt_nofault+0x14/0x16
> Apr 26 10:56:02.599646 (XEN)    [<ffff82d0801cf48d>]
> copy_from_user_hvm+0x6d/0x8d
> Apr 26 10:56:02.599683 (XEN)    [<ffff82d08018a5f0>]
> compat_arch_memory_op+0x103/0x549
> Apr 26 10:56:02.607618 (XEN)    [<ffff82d08013d7db>]
> compat_memory_op+0xb2b/0x1282
> Apr 26 10:56:02.615607 (XEN)    [<ffff82d0801cbbfa>]
> hvm.c#hvm_memory_op_compat32+0x42/0x50
> Apr 26 10:56:02.615646 (XEN)    [<ffff82d0801d1c1d>]
> hvm_do_hypercall+0x392/0x624
> Apr 26 10:56:02.623592 (XEN)    [<ffff82d0801f71b2>]
> vmx_vmexit_handler+0xe17/0x1a10
> Apr 26 10:56:02.631611 (XEN)    [<ffff82d0801fc821>]
> vmx_asm_vmexit_handler+0x41/0x120
> Apr 26 10:56:02.631648 (XEN)
> Apr 26 10:56:02.639550 (XEN)
> Apr 26 10:56:02.639576 (XEN)
> ****************************************
> Apr 26 10:56:02.639606 (XEN) Panic on CPU 3:
> Apr 26 10:56:02.639632 (XEN) Assertion 'r->type == IOREQ_TYPE_COPY' failed
> at vmsi.c:352
> Apr 26 10:56:02.647475 (XEN)
> ****************************************
> Apr 26 10:56:02.655441 (XEN)
> Apr 26 10:56:02.655456 (XEN) Reboot in five seconds...
> Apr 26 10:56:02.655471 (XEN) Resetting with ACPI MEMORY or I/O
> RESET_REG.

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