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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [xen-unstable-smoke bisection] complete build-amd64
branch xen-unstable-smoke xenbranch xen-unstable-smoke job build-amd64 testid xen-build 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 *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af Bug not present: 40dbe1818a6af630cc8595ea97b35f3a0d296606 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/128076/ commit e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af Author: Christopher Clark <christopher.clark6@xxxxxxxxxxxxxx> Date: Tue Sep 25 16:30:32 2018 +0200 fuzz, test x86_emulator: disable sse before including always_inline fns Workaround for compiler rejection of SSE-using always_inlines defined before SSE is disabled. Compiling with _FORTIFY_SOURCE or higher levels of optimization enabled will always_inline several library fns (memset, memcpy, ...) (with gcc 8.2.0 and glibc 2.28). In fuzz and x86_emulator test, the compiler is instructed not to generate SSE instructions via: #pragma GCC target("no-sse") because those registers are needed for use by the workload. The combination above causes compilation failure as the inline functions use those instructions. This is resolved by reordering the inclusion of <stdio.h> and <string.h> to after the pragma disabling SSE generation. It would be preferable to locate the no-sse pragma within x86-emulate.h at the top of the file, prior to including any other headers; unfortunately doing so before <stdlib.h> causes compilation failure due to declaration of 'atof' with: "SSE register return with SSE disabled". Fortunately there is no (known) current dependency on any always_inline SSE-inclined function declared in <stdlib.h> or any of its dependencies, so the pragma is therefore issued immediately after inclusion of <stdlib.h> with a comment introduced to explain its location there. Add compile-time checks for unwanted prior inclusion of <string.h> and <stdio.h>, which are the two headers that provide the library functions that are handled with wrappers and listed within "x86-emulate.h" as ones "we think might access any of the FPU state". * Use standard-defined "EOF" macro to detect prior <stdio.h> inclusion. * Use "_STRING_H" (non-standardized guard macro) as best-effort for detection of prior <string.h> inclusion. This is non-universally viable but will provide error output on common GLIBC systems, so provides some defensive coverage. Adds conditional #include <stdio.h> to x86-emulate.h because fwrite, printf, etc. are referenced when WRAP has been defined. Signed-off-by: Christopher Clark <christopher.clark6@xxxxxxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> For bisection revision-tuple graph see: http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable-smoke/build-amd64.xen-build.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-smoke/build-amd64.xen-build --summary-out=tmp/128076.bisection-summary --basis-template=127928 --blessings=real,real-bisect xen-unstable-smoke build-amd64 xen-build Searching for failure / basis pass: 128062 fail [host=baroque1] / 128052 [host=albana0] 128048 [host=godello1] 128045 [host=godello0] 128038 ok. Failure / basis pass flights: 128062 / 128038 (tree with no url: minios) (tree with no url: ovmf) (tree with no url: seabios) 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 Latest 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 6cf4d8d3aa2699ff1ffa9e56240a6d188f91938c Basis pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 1bd9cc34e152addeacbbf44898125c7be00e7677 Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/qemu-xen-traditional.git#9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149-9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 git://xenbits.xen.org/qemu-xen.git#de5b678ca4dcdfa83e322491d478d66df56c1986-de5b678ca4dcdfa83e322491d478d66df56c1986 git://xenbits.xen.org/xen.git#1bd9cc34e152addeacbbf44898125c7be00e7677-6cf4d8d3aa2699ff1ffa9e56240a6d188f91938c Loaded 1001 nodes in revision graph Searching for test results: 128019 [host=italia0] 128067 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 1bd9cc34e152addeacbbf44898125c7be00e7677 128068 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 6cf4d8d3aa2699ff1ffa9e56240a6d188f91938c 128048 [host=godello1] 128025 [host=albana0] 128069 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 40dbe1818a6af630cc8595ea97b35f3a0d296606 128029 [host=italia0] 128052 [host=albana0] 128070 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af 128071 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 40dbe1818a6af630cc8595ea97b35f3a0d296606 128038 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 1bd9cc34e152addeacbbf44898125c7be00e7677 128072 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af 128057 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 0348184dd2ee43d343623d3db647af3e635fd0c3 128045 [host=godello0] 128061 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 1bd9cc34e152addeacbbf44898125c7be00e7677 128063 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 0348184dd2ee43d343623d3db647af3e635fd0c3 128073 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 40dbe1818a6af630cc8595ea97b35f3a0d296606 128064 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 e70934f44ad63e5433756f785ab4bcb316f860f2 128062 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 6cf4d8d3aa2699ff1ffa9e56240a6d188f91938c 128066 pass 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 7cbcd02ff302ea558d870ac7b21d30343b695af9 128076 fail 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af Searching for interesting versions Result found: flight 128038 (pass), for basis pass Result found: flight 128062 (fail), for basis failure Repro found: flight 128067 (pass), for basis pass Repro found: flight 128068 (fail), for basis failure 0 revisions at 9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 de5b678ca4dcdfa83e322491d478d66df56c1986 40dbe1818a6af630cc8595ea97b35f3a0d296606 No revisions left to test, checking graph state. Result found: flight 128069 (pass), for last pass Result found: flight 128070 (fail), for first failure Repro found: flight 128071 (pass), for last pass Repro found: flight 128072 (fail), for first failure Repro found: flight 128073 (pass), for last pass Repro found: flight 128076 (fail), for first failure *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af Bug not present: 40dbe1818a6af630cc8595ea97b35f3a0d296606 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/128076/ commit e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af Author: Christopher Clark <christopher.clark6@xxxxxxxxxxxxxx> Date: Tue Sep 25 16:30:32 2018 +0200 fuzz, test x86_emulator: disable sse before including always_inline fns Workaround for compiler rejection of SSE-using always_inlines defined before SSE is disabled. Compiling with _FORTIFY_SOURCE or higher levels of optimization enabled will always_inline several library fns (memset, memcpy, ...) (with gcc 8.2.0 and glibc 2.28). In fuzz and x86_emulator test, the compiler is instructed not to generate SSE instructions via: #pragma GCC target("no-sse") because those registers are needed for use by the workload. The combination above causes compilation failure as the inline functions use those instructions. This is resolved by reordering the inclusion of <stdio.h> and <string.h> to after the pragma disabling SSE generation. It would be preferable to locate the no-sse pragma within x86-emulate.h at the top of the file, prior to including any other headers; unfortunately doing so before <stdlib.h> causes compilation failure due to declaration of 'atof' with: "SSE register return with SSE disabled". Fortunately there is no (known) current dependency on any always_inline SSE-inclined function declared in <stdlib.h> or any of its dependencies, so the pragma is therefore issued immediately after inclusion of <stdlib.h> with a comment introduced to explain its location there. Add compile-time checks for unwanted prior inclusion of <string.h> and <stdio.h>, which are the two headers that provide the library functions that are handled with wrappers and listed within "x86-emulate.h" as ones "we think might access any of the FPU state". * Use standard-defined "EOF" macro to detect prior <stdio.h> inclusion. * Use "_STRING_H" (non-standardized guard macro) as best-effort for detection of prior <string.h> inclusion. This is non-universally viable but will provide error output on common GLIBC systems, so provides some defensive coverage. Adds conditional #include <stdio.h> to x86-emulate.h because fwrite, printf, etc. are referenced when WRAP has been defined. Signed-off-by: Christopher Clark <christopher.clark6@xxxxxxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> Revision graph left in /home/logs/results/bisect/xen-unstable-smoke/build-amd64.xen-build.{dot,ps,png,html,svg}. ---------------------------------------- 128076: tolerable ALL FAIL flight 128076 xen-unstable-smoke real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/128076/ Failures :-/ but no regressions. Tests which did not succeed, including tests which could not be run: build-amd64 6 xen-build fail baseline untested jobs: build-amd64 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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