* [xen-unstable bisection] complete test-xtf-amd64-amd64-1
@ 2021-02-23 18:02 osstest service owner
0 siblings, 0 replies; 4+ messages in thread
From: osstest service owner @ 2021-02-23 18:02 UTC (permalink / raw)
To: xen-devel, osstest-admin
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 13000 bytes --]
branch xen-unstable
xenbranch xen-unstable
job test-xtf-amd64-amd64-1
testid xtf/test-pv32pae-selftest
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: 4dc1815991420b809ce18dddfdf9c0af48944204
Bug not present: 2d824791504f4119f04f95bafffec2e37d319c25
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/159596/
commit 4dc1815991420b809ce18dddfdf9c0af48944204
Author: Jan Beulich <jbeulich@suse.com>
Date: Fri Feb 19 17:19:56 2021 +0100
x86/PV: harden guest memory accesses against speculative abuse
Inspired by
https://lore.kernel.org/lkml/f12e7d3cecf41b2c29734ea45a393be21d4a8058.1597848273.git.jpoimboe@redhat.com/
and prior work in that area of x86 Linux, suppress speculation with
guest specified pointer values by suitably masking the addresses to
non-canonical space in case they fall into Xen's virtual address range.
Introduce a new Kconfig control.
Note that it is necessary in such code to avoid using "m" kind operands:
If we didn't, there would be no guarantee that the register passed to
guest_access_mask_ptr is also the (base) one used for the memory access.
As a minor unrelated change in get_unsafe_asm() the unnecessary "itype"
parameter gets dropped and the XOR on the fixup path gets changed to be
a 32-bit one in all cases: This way we avoid pointless REX.W or operand
size overrides, or writes to partial registers.
Requested-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Release-Acked-by: Ian Jackson <iwj@xenproject.org>
For bisection revision-tuple graph see:
http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xtf--test-pv32pae-selftest.html
Revision IDs in each graph node refer, respectively, to the Trees above.
----------------------------------------
Running cs-bisection-step --graph-out=/home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xtf--test-pv32pae-selftest --summary-out=tmp/159596.bisection-summary --basis-template=159475 --blessings=real,real-bisect,real-retry xen-unstable test-xtf-amd64-amd64-1 xtf/test-pv32pae-selftest
Searching for failure / basis pass:
159559 fail [host=godello0] / 159475 [host=huxelrebe1] 159453 [host=fiano0] 159424 [host=chardonnay0] 159396 ok.
Failure / basis pass flights: 159559 / 159396
(tree with no url: minios)
(tree with no url: ovmf)
(tree with no url: seabios)
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
Latest c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 f894c3d8e705fea9cb3244fa61684bfd8bdd1b2a 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
Basis pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 04085ec1ac05a362812e9b0c6b5a8713d7dc88ad 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#c3038e718a19fc596f7b1baba0f83d5146dc7784-c3038e718a19fc596f7b1baba0f83d5146dc7784 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#3d273dd05e51e5a1ffba3d98c7437ee84e8f8764-3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 git://xenbits.xen.org/qemu-xen.git#7ea428895af2840d85c524f0bd11a38\
aac308308-7ea428895af2840d85c524f0bd11a38aac308308 git://xenbits.xen.org/xen.git#04085ec1ac05a362812e9b0c6b5a8713d7dc88ad-f894c3d8e705fea9cb3244fa61684bfd8bdd1b2a git://xenbits.xen.org/xtf.git#8ab15139728a8efd3ebbb60beb16a958a6a93fa1-8ab15139728a8efd3ebbb60beb16a958a6a93fa1
Loaded 5001 nodes in revision graph
Searching for test results:
159315 [host=huxelrebe1]
159335 [host=godello1]
159362 [host=fiano1]
159396 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 04085ec1ac05a362812e9b0c6b5a8713d7dc88ad 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159424 [host=chardonnay0]
159453 [host=fiano0]
159475 [host=huxelrebe1]
159487 [host=chardonnay1]
159491 [host=albana1]
159508 [host=elbling0]
159526 [host=albana0]
159540 [host=albana1]
159559 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 f894c3d8e705fea9cb3244fa61684bfd8bdd1b2a 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159581 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 04085ec1ac05a362812e9b0c6b5a8713d7dc88ad 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159583 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 f894c3d8e705fea9cb3244fa61684bfd8bdd1b2a 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159584 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 6a1d72d3739e330caf728ea07d656d7bf568824b 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159586 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 336fbbdf61562e5ae1112f24bc90c1164adf2144 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159587 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 f954a1bf5f74ad6edce361d1bf1a29137ff374e8 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159589 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159591 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 4dc1815991420b809ce18dddfdf9c0af48944204 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159593 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159594 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 4dc1815991420b809ce18dddfdf9c0af48944204 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159595 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
159596 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 4dc1815991420b809ce18dddfdf9c0af48944204 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
Searching for interesting versions
Result found: flight 159396 (pass), for basis pass
For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 8ab15139728a8efd3ebbb60beb16a958a6a93fa1, results HASH(0x5555cd8fe6a8) HASH(0x5555cd97c438) HASH(0x5555cd97f3c8) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05\
e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 6a1d72d3739e330caf728ea07d656d7bf568824b 8ab15139728a8efd3ebbb60beb16a958a6a93fa1, results HASH(0x5555cd8e70d8) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 04085ec1ac05a362812e9b0c6b5a8713d7dc88ad 8ab15139728a8efd3ebbb60beb16a958a6a93fa1, results HASH(0x5555cd8e\
bb90) HASH(0x5555cd8f4658) Result found: flight 159559 (fail), for basis failure (at ancestor ~76)
Repro found: flight 159581 (pass), for basis pass
Repro found: flight 159583 (fail), for basis failure
0 revisions at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 8ab15139728a8efd3ebbb60beb16a958a6a93fa1
No revisions left to test, checking graph state.
Result found: flight 159589 (pass), for last pass
Result found: flight 159591 (fail), for first failure
Repro found: flight 159593 (pass), for last pass
Repro found: flight 159594 (fail), for first failure
Repro found: flight 159595 (pass), for last pass
Repro found: flight 159596 (fail), for first failure
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: 4dc1815991420b809ce18dddfdf9c0af48944204
Bug not present: 2d824791504f4119f04f95bafffec2e37d319c25
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/159596/
commit 4dc1815991420b809ce18dddfdf9c0af48944204
Author: Jan Beulich <jbeulich@suse.com>
Date: Fri Feb 19 17:19:56 2021 +0100
x86/PV: harden guest memory accesses against speculative abuse
Inspired by
https://lore.kernel.org/lkml/f12e7d3cecf41b2c29734ea45a393be21d4a8058.1597848273.git.jpoimboe@redhat.com/
and prior work in that area of x86 Linux, suppress speculation with
guest specified pointer values by suitably masking the addresses to
non-canonical space in case they fall into Xen's virtual address range.
Introduce a new Kconfig control.
Note that it is necessary in such code to avoid using "m" kind operands:
If we didn't, there would be no guarantee that the register passed to
guest_access_mask_ptr is also the (base) one used for the memory access.
As a minor unrelated change in get_unsafe_asm() the unnecessary "itype"
parameter gets dropped and the XOR on the fixup path gets changed to be
a 32-bit one in all cases: This way we avoid pointless REX.W or operand
size overrides, or writes to partial registers.
Requested-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Release-Acked-by: Ian Jackson <iwj@xenproject.org>
Revision graph left in /home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xtf--test-pv32pae-selftest.{dot,ps,png,html,svg}.
----------------------------------------
159596: tolerable all pass
flight 159596 xen-unstable real-bisect [real]
http://logs.test-lab.xenproject.org/osstest/logs/159596/
Failures :-/ but no regressions.
Tests which did not succeed,
including tests which could not be run:
test-xtf-amd64-amd64-1 19 xtf/test-pv32pae-selftest fail baseline untested
jobs:
test-xtf-amd64-amd64-1 pass
------------------------------------------------------------
sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images
Logs, config files, etc. are available at
http://logs.test-lab.xenproject.org/osstest/logs
Explanation of these reports, and of osstest in general, is at
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master
Test harness code can be found at
http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
^ permalink raw reply [flat|nested] 4+ messages in thread
* [xen-unstable bisection] complete test-xtf-amd64-amd64-1
@ 2020-09-09 3:43 osstest service owner
0 siblings, 0 replies; 4+ messages in thread
From: osstest service owner @ 2020-09-09 3:43 UTC (permalink / raw)
To: xen-devel, osstest-admin
branch xen-unstable
xenbranch xen-unstable
job test-xtf-amd64-amd64-1
testid leak-check/check
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: ad0fd291c5e79191c2e3c70e43dded569f11a450
Bug not present: a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/153986/
commit ad0fd291c5e79191c2e3c70e43dded569f11a450
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Tue Aug 11 16:05:06 2020 +0100
x86/pv: Rewrite segment context switching from scratch
There are multiple bugs with the existing implementation.
On AMD CPUs prior to Zen2, loading a NUL segment selector doesn't clear the
segment base, which is a problem for 64bit code which typically expects to use
a NUL %fs/%gs selector.
On a context switch from any PV vcpu, to a 64bit PV vcpu with an %fs/%gs
selector which faults, the fixup logic loads NUL, and the guest is entered at
the failsafe callback with the stale base.
Alternatively, a PV context switch sequence of 64 (NUL, non-zero base) =>
32 (NUL) => 64 (NUL, zero base) will similarly cause Xen to enter the guest
with a stale base.
Both of these corner cases manifest as state corruption in the final vcpu.
However, damage is limited to to 64bit code expecting to use Thread Local
Storage with a base pointer of 0, which doesn't occur by default.
The context switch logic is extremely complicated, and is attempting to
optimise away loading a NUL selector (which is fast), or writing a 64bit base
of 0 (which is rare). Furthermore, it fails to respect Linux's ABI with
userspace, which manifests as userspace state corruption as far as Linux is
concerned.
Always restore all selector and base state, in all cases.
Leave a large comment explaining hardware behaviour, and the new ABI
expectations. Update the comments in the public headers.
Drop all "segment preloading" to handle the AMD corner case. It was never
anything but a waste of time for %ds/%es, and isn't needed now that %fs/%gs
bases are unconditionally written for 64bit PV guests. In load_segments(),
store the result of is_pv_32bit_vcpu() as it is an expensive predicate now,
and not used in a way which impacts speculative safety.
Reported-by: Andy Lutomirski <luto@kernel.org>
Reported-by: Sarah Newman <srn@prgmr.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
For bisection revision-tuple graph see:
http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.leak-check--check.html
Revision IDs in each graph node refer, respectively, to the Trees above.
----------------------------------------
Running cs-bisection-step --graph-out=/home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.leak-check--check --summary-out=tmp/153995.bisection-summary --basis-template=152877 --blessings=real,real-bisect --flight=153995 xen-unstable test-xtf-amd64-amd64-1 leak-check/check
Searching for failure / basis pass:
153957 fail [host=rimava1] / 153882 [host=godello0] 153845 [host=elbling0] 153813 [host=chardonnay1] 153788 [host=huxelrebe1] 153770 [host=elbling1] 153758 [host=fiano1] 153653 [host=albana0] 153619 [host=chardonnay0] 153602 [host=elbling0] 153591 [host=albana1] 153551 [host=chardonnay1] 153526 [host=huxelrebe1] 153494 [host=godello0] 153468 [host=huxelrebe0] 153437 [host=godello1] 153400 [host=fiano1] 153363 [host=pinot1] 153321 [host=albana1] 153280 [host=albana0] 153109 [host=fiano0] 153065 \
[host=pinot0] 153028 [host=elbling1] 153004 ok.
Failure / basis pass flights: 153957 / 153004
(tree with no url: minios)
(tree with no url: ovmf)
(tree with no url: seabios)
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
Latest c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Basis pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#c3038e718a19fc596f7b1baba0f83d5146dc7784-c3038e718a19fc596f7b1baba0f83d5146dc7784 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#3d273dd05e51e5a1ffba3d98c7437ee84e8f8764-3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 git://xenbits.xen.org/qemu-xen.git#ea6d3cd1ed79d824e605a70c3626bc4\
37c386260-ea6d3cd1ed79d824e605a70c3626bc437c386260 git://xenbits.xen.org/xen.git#d400dc5729e4e132d61c2e7df57d81aaed762044-b11910082d90bb1597f6679524eb726a33306672 git://xenbits.xen.org/xtf.git#17d372b763cb0b2e2e6b5a637c11f3997d2533fa-17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Loaded 5001 nodes in revision graph
Searching for test results:
152985 []
153004 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153028 [host=elbling1]
153065 [host=pinot0]
153109 [host=fiano0]
153280 [host=albana0]
153321 [host=albana1]
153363 [host=pinot1]
153400 [host=fiano1]
153437 [host=godello1]
153468 [host=huxelrebe0]
153494 [host=godello0]
153526 [host=huxelrebe1]
153551 [host=chardonnay1]
153591 [host=albana1]
153602 [host=elbling0]
153619 [host=chardonnay0]
153653 [host=albana0]
153758 [host=fiano1]
153770 [host=elbling1]
153788 [host=huxelrebe1]
153813 [host=chardonnay1]
153845 [host=elbling0]
153882 [host=godello0]
153906 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153931 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153955 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153958 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153960 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 2c8fabb2232d34d6d20a9ce6989e2e6cbee07d52 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153965 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 e52716154da04967f9b9d7cf9a1655ea4bcd9e93 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153967 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153969 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 1be24cd17741192d1e18f24e6cf92f0ae9324e62 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153972 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 ad0fd291c5e79191c2e3c70e43dded569f11a450 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153976 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153979 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 ad0fd291c5e79191c2e3c70e43dded569f11a450 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153957 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153982 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153986 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 ad0fd291c5e79191c2e3c70e43dded569f11a450 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Searching for interesting versions
Result found: flight 153004 (pass), for basis pass
For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x55eb0e1fe640) HASH(0x55eb0dc6bf48) HASH(0x55eb0e1db288) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05\
e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 e52716154da04967f9b9d7cf9a1655ea4bcd9e93 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x55eb0e1da688) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 2c8fabb2232d34d6d20a9ce6989e2e6cbee07d52 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x55eb0e1f\
6178) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x55eb0e1e4378) HASH(0x55eb0e1d6c78) Result found: flight 153906 (fail), for basis failure (at ancestor ~257)
Repro found: flight 153955 (pass), for basis pass
Repro found: flight 153957 (fail), for basis failure
0 revisions at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
No revisions left to test, checking graph state.
Result found: flight 153967 (pass), for last pass
Result found: flight 153972 (fail), for first failure
Repro found: flight 153976 (pass), for last pass
Repro found: flight 153979 (fail), for first failure
Repro found: flight 153982 (pass), for last pass
Repro found: flight 153986 (fail), for first failure
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: ad0fd291c5e79191c2e3c70e43dded569f11a450
Bug not present: a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/153986/
commit ad0fd291c5e79191c2e3c70e43dded569f11a450
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Tue Aug 11 16:05:06 2020 +0100
x86/pv: Rewrite segment context switching from scratch
There are multiple bugs with the existing implementation.
On AMD CPUs prior to Zen2, loading a NUL segment selector doesn't clear the
segment base, which is a problem for 64bit code which typically expects to use
a NUL %fs/%gs selector.
On a context switch from any PV vcpu, to a 64bit PV vcpu with an %fs/%gs
selector which faults, the fixup logic loads NUL, and the guest is entered at
the failsafe callback with the stale base.
Alternatively, a PV context switch sequence of 64 (NUL, non-zero base) =>
32 (NUL) => 64 (NUL, zero base) will similarly cause Xen to enter the guest
with a stale base.
Both of these corner cases manifest as state corruption in the final vcpu.
However, damage is limited to to 64bit code expecting to use Thread Local
Storage with a base pointer of 0, which doesn't occur by default.
The context switch logic is extremely complicated, and is attempting to
optimise away loading a NUL selector (which is fast), or writing a 64bit base
of 0 (which is rare). Furthermore, it fails to respect Linux's ABI with
userspace, which manifests as userspace state corruption as far as Linux is
concerned.
Always restore all selector and base state, in all cases.
Leave a large comment explaining hardware behaviour, and the new ABI
expectations. Update the comments in the public headers.
Drop all "segment preloading" to handle the AMD corner case. It was never
anything but a waste of time for %ds/%es, and isn't needed now that %fs/%gs
bases are unconditionally written for 64bit PV guests. In load_segments(),
store the result of is_pv_32bit_vcpu() as it is an expensive predicate now,
and not used in a way which impacts speculative safety.
Reported-by: Andy Lutomirski <luto@kernel.org>
Reported-by: Sarah Newman <srn@prgmr.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Revision graph left in /home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.leak-check--check.{dot,ps,png,html,svg}.
No revision to test.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [xen-unstable bisection] complete test-xtf-amd64-amd64-1
@ 2020-09-09 0:57 osstest service owner
0 siblings, 0 replies; 4+ messages in thread
From: osstest service owner @ 2020-09-09 0:57 UTC (permalink / raw)
To: xen-devel, osstest-admin
branch xen-unstable
xenbranch xen-unstable
job test-xtf-amd64-amd64-1
testid xtf/test-pv64-selftest
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: ad0fd291c5e79191c2e3c70e43dded569f11a450
Bug not present: a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/153986/
commit ad0fd291c5e79191c2e3c70e43dded569f11a450
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Tue Aug 11 16:05:06 2020 +0100
x86/pv: Rewrite segment context switching from scratch
There are multiple bugs with the existing implementation.
On AMD CPUs prior to Zen2, loading a NUL segment selector doesn't clear the
segment base, which is a problem for 64bit code which typically expects to use
a NUL %fs/%gs selector.
On a context switch from any PV vcpu, to a 64bit PV vcpu with an %fs/%gs
selector which faults, the fixup logic loads NUL, and the guest is entered at
the failsafe callback with the stale base.
Alternatively, a PV context switch sequence of 64 (NUL, non-zero base) =>
32 (NUL) => 64 (NUL, zero base) will similarly cause Xen to enter the guest
with a stale base.
Both of these corner cases manifest as state corruption in the final vcpu.
However, damage is limited to to 64bit code expecting to use Thread Local
Storage with a base pointer of 0, which doesn't occur by default.
The context switch logic is extremely complicated, and is attempting to
optimise away loading a NUL selector (which is fast), or writing a 64bit base
of 0 (which is rare). Furthermore, it fails to respect Linux's ABI with
userspace, which manifests as userspace state corruption as far as Linux is
concerned.
Always restore all selector and base state, in all cases.
Leave a large comment explaining hardware behaviour, and the new ABI
expectations. Update the comments in the public headers.
Drop all "segment preloading" to handle the AMD corner case. It was never
anything but a waste of time for %ds/%es, and isn't needed now that %fs/%gs
bases are unconditionally written for 64bit PV guests. In load_segments(),
store the result of is_pv_32bit_vcpu() as it is an expensive predicate now,
and not used in a way which impacts speculative safety.
Reported-by: Andy Lutomirski <luto@kernel.org>
Reported-by: Sarah Newman <srn@prgmr.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
For bisection revision-tuple graph see:
http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xtf--test-pv64-selftest.html
Revision IDs in each graph node refer, respectively, to the Trees above.
----------------------------------------
Running cs-bisection-step --graph-out=/home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xtf--test-pv64-selftest --summary-out=tmp/153986.bisection-summary --basis-template=152877 --blessings=real,real-bisect xen-unstable test-xtf-amd64-amd64-1 xtf/test-pv64-selftest
Searching for failure / basis pass:
153957 fail [host=rimava1] / 153882 [host=godello0] 153845 [host=elbling0] 153813 [host=chardonnay1] 153788 [host=huxelrebe1] 153770 [host=elbling1] 153758 [host=fiano1] 153653 [host=albana0] 153619 [host=chardonnay0] 153602 [host=elbling0] 153591 [host=albana1] 153551 [host=chardonnay1] 153526 [host=huxelrebe1] 153494 [host=godello0] 153468 [host=huxelrebe0] 153437 [host=godello1] 153400 [host=fiano1] 153363 [host=pinot1] 153321 [host=albana1] 153280 [host=albana0] 153109 [host=fiano0] 153065 \
[host=pinot0] 153028 [host=elbling1] 153004 ok.
Failure / basis pass flights: 153957 / 153004
(tree with no url: minios)
(tree with no url: ovmf)
(tree with no url: seabios)
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
Latest c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Basis pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#c3038e718a19fc596f7b1baba0f83d5146dc7784-c3038e718a19fc596f7b1baba0f83d5146dc7784 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#3d273dd05e51e5a1ffba3d98c7437ee84e8f8764-3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 git://xenbits.xen.org/qemu-xen.git#ea6d3cd1ed79d824e605a70c3626bc4\
37c386260-ea6d3cd1ed79d824e605a70c3626bc437c386260 git://xenbits.xen.org/xen.git#d400dc5729e4e132d61c2e7df57d81aaed762044-b11910082d90bb1597f6679524eb726a33306672 git://xenbits.xen.org/xtf.git#17d372b763cb0b2e2e6b5a637c11f3997d2533fa-17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Loaded 5001 nodes in revision graph
Searching for test results:
152985 []
153004 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153028 [host=elbling1]
153065 [host=pinot0]
153109 [host=fiano0]
153280 [host=albana0]
153321 [host=albana1]
153363 [host=pinot1]
153400 [host=fiano1]
153437 [host=godello1]
153468 [host=huxelrebe0]
153494 [host=godello0]
153526 [host=huxelrebe1]
153551 [host=chardonnay1]
153591 [host=albana1]
153602 [host=elbling0]
153619 [host=chardonnay0]
153653 [host=albana0]
153758 [host=fiano1]
153770 [host=elbling1]
153788 [host=huxelrebe1]
153813 [host=chardonnay1]
153845 [host=elbling0]
153882 [host=godello0]
153906 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153931 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153955 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153958 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153960 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 2c8fabb2232d34d6d20a9ce6989e2e6cbee07d52 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153965 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 e52716154da04967f9b9d7cf9a1655ea4bcd9e93 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153967 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153969 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 1be24cd17741192d1e18f24e6cf92f0ae9324e62 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153972 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 ad0fd291c5e79191c2e3c70e43dded569f11a450 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153976 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153979 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 ad0fd291c5e79191c2e3c70e43dded569f11a450 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153957 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 b11910082d90bb1597f6679524eb726a33306672 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153982 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
153986 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 ad0fd291c5e79191c2e3c70e43dded569f11a450 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
Searching for interesting versions
Result found: flight 153004 (pass), for basis pass
For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x56489ec1a300) HASH(0x56489ec09f70) HASH(0x56489ec26b68) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05\
e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 e52716154da04967f9b9d7cf9a1655ea4bcd9e93 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x56489ec22230) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 2c8fabb2232d34d6d20a9ce6989e2e6cbee07d52 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x56489ec0\
f388) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 d400dc5729e4e132d61c2e7df57d81aaed762044 17d372b763cb0b2e2e6b5a637c11f3997d2533fa, results HASH(0x56489ec122b8) HASH(0x56489ec188f8) Result found: flight 153906 (fail), for basis failure (at ancestor ~257)
Repro found: flight 153955 (pass), for basis pass
Repro found: flight 153957 (fail), for basis failure
0 revisions at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 ea6d3cd1ed79d824e605a70c3626bc437c386260 a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4 17d372b763cb0b2e2e6b5a637c11f3997d2533fa
No revisions left to test, checking graph state.
Result found: flight 153967 (pass), for last pass
Result found: flight 153972 (fail), for first failure
Repro found: flight 153976 (pass), for last pass
Repro found: flight 153979 (fail), for first failure
Repro found: flight 153982 (pass), for last pass
Repro found: flight 153986 (fail), for first failure
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: ad0fd291c5e79191c2e3c70e43dded569f11a450
Bug not present: a5eaac9245f4f382a3cd0e9710e9d1cba7db20e4
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/153986/
commit ad0fd291c5e79191c2e3c70e43dded569f11a450
Author: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Tue Aug 11 16:05:06 2020 +0100
x86/pv: Rewrite segment context switching from scratch
There are multiple bugs with the existing implementation.
On AMD CPUs prior to Zen2, loading a NUL segment selector doesn't clear the
segment base, which is a problem for 64bit code which typically expects to use
a NUL %fs/%gs selector.
On a context switch from any PV vcpu, to a 64bit PV vcpu with an %fs/%gs
selector which faults, the fixup logic loads NUL, and the guest is entered at
the failsafe callback with the stale base.
Alternatively, a PV context switch sequence of 64 (NUL, non-zero base) =>
32 (NUL) => 64 (NUL, zero base) will similarly cause Xen to enter the guest
with a stale base.
Both of these corner cases manifest as state corruption in the final vcpu.
However, damage is limited to to 64bit code expecting to use Thread Local
Storage with a base pointer of 0, which doesn't occur by default.
The context switch logic is extremely complicated, and is attempting to
optimise away loading a NUL selector (which is fast), or writing a 64bit base
of 0 (which is rare). Furthermore, it fails to respect Linux's ABI with
userspace, which manifests as userspace state corruption as far as Linux is
concerned.
Always restore all selector and base state, in all cases.
Leave a large comment explaining hardware behaviour, and the new ABI
expectations. Update the comments in the public headers.
Drop all "segment preloading" to handle the AMD corner case. It was never
anything but a waste of time for %ds/%es, and isn't needed now that %fs/%gs
bases are unconditionally written for 64bit PV guests. In load_segments(),
store the result of is_pv_32bit_vcpu() as it is an expensive predicate now,
and not used in a way which impacts speculative safety.
Reported-by: Andy Lutomirski <luto@kernel.org>
Reported-by: Sarah Newman <srn@prgmr.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Revision graph left in /home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xtf--test-pv64-selftest.{dot,ps,png,html,svg}.
----------------------------------------
153986: tolerable ALL FAIL
flight 153986 xen-unstable real-bisect [real]
http://logs.test-lab.xenproject.org/osstest/logs/153986/
Failures :-/ but no regressions.
Tests which did not succeed,
including tests which could not be run:
test-xtf-amd64-amd64-1 18 xtf/test-pv64-selftest fail baseline untested
test-xtf-amd64-amd64-1 19 leak-check/check fail baseline untested
jobs:
test-xtf-amd64-amd64-1 fail
------------------------------------------------------------
sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images
Logs, config files, etc. are available at
http://logs.test-lab.xenproject.org/osstest/logs
Explanation of these reports, and of osstest in general, is at
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master
Test harness code can be found at
http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
^ permalink raw reply [flat|nested] 4+ messages in thread
* [xen-unstable bisection] complete test-xtf-amd64-amd64-1
@ 2018-09-16 10:56 osstest service owner
0 siblings, 0 replies; 4+ messages in thread
From: osstest service owner @ 2018-09-16 10:56 UTC (permalink / raw)
To: xen-devel, osstest-admin
[-- Attachment #1: Type: text/plain, Size: 12960 bytes --]
branch xen-unstable
xenbranch xen-unstable
job test-xtf-amd64-amd64-1
testid xen-boot
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: 66a9274cc3435117783cd3f07b238309d7f9c6de
Bug not present: 391266f0120c92ce8eb5bdb4a41bd314daaf6070
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/127683/
commit 66a9274cc3435117783cd3f07b238309d7f9c6de
Author: Roger Pau Monné <roger.pau@citrix.com>
Date: Fri Sep 7 11:08:00 2018 +0200
iommu: make iommu_inclusive_mapping a suboption of dom0-iommu
Introduce a new dom0-iommu=map-inclusive generic option that
supersedes iommu_inclusive_mapping. The previous behavior is preserved
and the option should only be enabled by default on Intel hardware.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Julien Grall <julien.grall@arm.com>
Acked-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
For bisection revision-tuple graph see:
http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xen-boot.html
Revision IDs in each graph node refer, respectively, to the Trees above.
----------------------------------------
Running cs-bisection-step --graph-out=/home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xen-boot --summary-out=tmp/127683.bisection-summary --basis-template=127541 --blessings=real,real-bisect xen-unstable test-xtf-amd64-amd64-1 xen-boot
Searching for failure / basis pass:
127595 fail [host=elbling0] / 127541 [host=joubertin0] 127520 [host=elbling1] 127504 [host=pinot1] 127489 [host=baroque0] 127429 [host=albana0] 127407 [host=pinot0] 127369 [host=rimava1] 127350 [host=baroque1] 127301 [host=chardonnay0] 127280 [host=italia0] 127266 [host=godello1] 127232 [host=godello0] 127070 [host=fiano0] 127012 [host=huxelrebe1] 126952 [host=albana1] 126854 [host=pinot1] 126778 [host=elbling1] 126683 [host=baroque0] 126564 [host=albana0] 126443 [host=joubertin1] 126346 [host=rimava1] 126266 [host=godello1] 126012 [host=debina1] 125912 [host=chardonnay0] 125691 [host=godello0] 125667 [host=pinot1] 125652 [host=rimava1] 125645 [host=italia0] 125609 [host=joubertin0] 125573 [host=debina0] 125533 ok.
Failure / basis pass flights: 127595 / 125533
(tree with no url: minios)
(tree with no url: ovmf)
(tree with no url: seabios)
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: xen git://xenbits.xen.org/xen.git
Tree: xtf git://xenbits.xen.org/xtf.git
Latest 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 d7c60727a3f26b7fda49c8de188dd1cec021d23a 089f9be25f4bb445f68241ba05ab4e17786e21a7
Basis pass 1e92e813554a93741666e9f378a83d70405b9076 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a 61bdddb82151fbf51c58f6ebc1b4a687942c45a8 f3702a5d29e94814991988bf8747341e18a2e8f5
Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#1e92e813554a93741666e9f378a83d70405b9076-7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#c8ea0457495342c417c3dc033bba25148b279f60-9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 git://xenbits.xen.org/qemu-xen.git#43139135a8938de44f66333831d3a8655d07663a-de5b678ca4dcdfa83e322491d478d66df56c1986 git://xenbits.xen.org/xen.git#61bdddb82151fbf51c58f6ebc1b4a687942c45a8-d7c60727a3f26b7fda49c8de188dd1cec021d23a git://xenbits.xen.org/xtf.git#f3702a5d29e94814991988bf8747341e18a2e8f5-089f9be25f4bb445f68241ba05ab4e17786e21a7
adhoc-revtuple-generator: tree discontiguous: linux-pvops
adhoc-revtuple-generator: tree discontiguous: qemu-xen
>From git://cache:9419/git://xenbits.xen.org/xen
1dfb8e6e09..558408cab9 coverity-tested/smoke -> origin/coverity-tested/smoke
Use of uninitialized value $parents in array dereference at ./adhoc-revtuple-generator line 465.
Use of uninitialized value in concatenation (.) or string at ./adhoc-revtuple-generator line 465.
Loaded 1446 nodes in revision graph
Searching for test results:
125533 pass 1e92e813554a93741666e9f378a83d70405b9076 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a 61bdddb82151fbf51c58f6ebc1b4a687942c45a8 f3702a5d29e94814991988bf8747341e18a2e8f5
125609 [host=joubertin0]
125573 [host=debina0]
125645 [host=italia0]
125652 [host=rimava1]
125667 [host=pinot1]
125691 [host=godello0]
125912 [host=chardonnay0]
126012 [host=debina1]
126346 [host=rimava1]
126266 [host=godello1]
126443 [host=joubertin1]
126564 [host=albana0]
126683 [host=baroque0]
126854 [host=pinot1]
126778 [host=elbling1]
126952 [host=albana1]
127070 [host=fiano0]
127012 [host=huxelrebe1]
127123 []
127232 [host=godello0]
127266 [host=godello1]
127280 [host=italia0]
127301 [host=chardonnay0]
127350 [host=baroque1]
127369 [host=rimava1]
127407 [host=pinot0]
127429 [host=albana0]
127489 [host=baroque0]
127541 [host=joubertin0]
127504 [host=pinot1]
127520 [host=elbling1]
127595 fail 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 d7c60727a3f26b7fda49c8de188dd1cec021d23a 089f9be25f4bb445f68241ba05ab4e17786e21a7
127651 fail 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 d7c60727a3f26b7fda49c8de188dd1cec021d23a 089f9be25f4bb445f68241ba05ab4e17786e21a7
127653 pass 1e92e813554a93741666e9f378a83d70405b9076 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a 7e6a733405b4f4221da51b6c4e5a735b8e64ede8 f3702a5d29e94814991988bf8747341e18a2e8f5
127683 fail 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 66a9274cc3435117783cd3f07b238309d7f9c6de 089f9be25f4bb445f68241ba05ab4e17786e21a7
127664 pass 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 391266f0120c92ce8eb5bdb4a41bd314daaf6070 089f9be25f4bb445f68241ba05ab4e17786e21a7
127654 pass 1e92e813554a93741666e9f378a83d70405b9076 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 3f2002614af51dfd507168a1696658bac91155ce f3702a5d29e94814991988bf8747341e18a2e8f5
127656 pass 1e92e813554a93741666e9f378a83d70405b9076 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 6069dd65d67e846b37aa03c48d22ceaf1afd211a 089f9be25f4bb445f68241ba05ab4e17786e21a7
127670 pass 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 391266f0120c92ce8eb5bdb4a41bd314daaf6070 089f9be25f4bb445f68241ba05ab4e17786e21a7
127658 fail 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 6bf0be5af852f2317b75ab94f1d2bb045ebef452 089f9be25f4bb445f68241ba05ab4e17786e21a7
127621 pass 1e92e813554a93741666e9f378a83d70405b9076 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 43139135a8938de44f66333831d3a8655d07663a 61bdddb82151fbf51c58f6ebc1b4a687942c45a8 f3702a5d29e94814991988bf8747341e18a2e8f5
127660 pass 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 66b245d9eaebfef710148d410ae97a2eaedc3170 089f9be25f4bb445f68241ba05ab4e17786e21a7
127661 pass 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 1dfb8e6e0948912d1fd96d6ed9034527c5c74f31 089f9be25f4bb445f68241ba05ab4e17786e21a7
127668 fail 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 66a9274cc3435117783cd3f07b238309d7f9c6de 089f9be25f4bb445f68241ba05ab4e17786e21a7
127673 fail 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 66a9274cc3435117783cd3f07b238309d7f9c6de 089f9be25f4bb445f68241ba05ab4e17786e21a7
127676 pass 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 391266f0120c92ce8eb5bdb4a41bd314daaf6070 089f9be25f4bb445f68241ba05ab4e17786e21a7
Searching for interesting versions
Result found: flight 125533 (pass), for basis pass
Result found: flight 127595 (fail), for basis failure
Repro found: flight 127621 (pass), for basis pass
Repro found: flight 127651 (fail), for basis failure
0 revisions at 7fe7a0f4c5cf9e7f5b7cb67c1341cdbf62ed4c30 c530a75c1e6a472b0eb9558310b518f0dfcd8860 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 391266f0120c92ce8eb5bdb4a41bd314daaf6070 089f9be25f4bb445f68241ba05ab4e17786e21a7
No revisions left to test, checking graph state.
Result found: flight 127664 (pass), for last pass
Result found: flight 127668 (fail), for first failure
Repro found: flight 127670 (pass), for last pass
Repro found: flight 127673 (fail), for first failure
Repro found: flight 127676 (pass), for last pass
Repro found: flight 127683 (fail), for first failure
*** Found and reproduced problem changeset ***
Bug is in tree: xen git://xenbits.xen.org/xen.git
Bug introduced: 66a9274cc3435117783cd3f07b238309d7f9c6de
Bug not present: 391266f0120c92ce8eb5bdb4a41bd314daaf6070
Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/127683/
commit 66a9274cc3435117783cd3f07b238309d7f9c6de
Author: Roger Pau Monné <roger.pau@citrix.com>
Date: Fri Sep 7 11:08:00 2018 +0200
iommu: make iommu_inclusive_mapping a suboption of dom0-iommu
Introduce a new dom0-iommu=map-inclusive generic option that
supersedes iommu_inclusive_mapping. The previous behavior is preserved
and the option should only be enabled by default on Intel hardware.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Julien Grall <julien.grall@arm.com>
Acked-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
pnmtopng: 137 colors found
Revision graph left in /home/logs/results/bisect/xen-unstable/test-xtf-amd64-amd64-1.xen-boot.{dot,ps,png,html,svg}.
----------------------------------------
127683: tolerable ALL FAIL
flight 127683 xen-unstable real-bisect [real]
http://logs.test-lab.xenproject.org/osstest/logs/127683/
Failures :-/ but no regressions.
Tests which did not succeed,
including tests which could not be run:
test-xtf-amd64-amd64-1 7 xen-boot fail baseline untested
jobs:
test-xtf-amd64-amd64-1 fail
------------------------------------------------------------
sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images
Logs, config files, etc. are available at
http://logs.test-lab.xenproject.org/osstest/logs
Explanation of these reports, and of osstest in general, is at
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master
Test harness code can be found at
http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
[-- Attachment #2: Type: text/plain, Size: 157 bytes --]
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