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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen-unstable bisection] complete test-amd64-i386-xl-qemut-ws16-amd64
branch xen-unstable xenbranch xen-unstable job test-amd64-i386-xl-qemut-ws16-amd64 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 *** 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/159539/ commit 4dc1815991420b809ce18dddfdf9c0af48944204 Author: Jan Beulich <jbeulich@xxxxxxxx> 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@xxxxxxxxxx/ 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@xxxxxxxxxx> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Release-Acked-by: Ian Jackson <iwj@xxxxxxxxxxxxxx> For bisection revision-tuple graph see: http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-amd64-i386-xl-qemut-ws16-amd64.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-amd64-i386-xl-qemut-ws16-amd64.xen-boot --summary-out=tmp/159539.bisection-summary --basis-template=159475 --blessings=real,real-bisect,real-retry xen-unstable test-amd64-i386-xl-qemut-ws16-amd64 xen-boot Searching for failure / basis pass: 159526 fail [host=huxelrebe1] / 159475 ok. Failure / basis pass flights: 159526 / 159475 (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 Latest c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 87a067fd8f4d4f7c6be02c3d38145115ac542017 Basis pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 e8185c5f01c68f7d29d23a4a91bc1be1ff2cc1ca 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#e8185c5f01c68f7d29d23a4a91bc1be1ff2cc1ca-87a067fd8f4d4f7c6be02c3d38145115ac542017 Loaded 5001 nodes in revision graph Searching for test results: 159475 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 e8185c5f01c68f7d29d23a4a91bc1be1ff2cc1ca 159487 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 87a067fd8f4d4f7c6be02c3d38145115ac542017 159491 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 87a067fd8f4d4f7c6be02c3d38145115ac542017 159508 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 87a067fd8f4d4f7c6be02c3d38145115ac542017 159525 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 e8185c5f01c68f7d29d23a4a91bc1be1ff2cc1ca 159527 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 87a067fd8f4d4f7c6be02c3d38145115ac542017 159528 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 76aff7f6336b0ce19559700717537449972531be 159531 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 159532 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 f954a1bf5f74ad6edce361d1bf1a29137ff374e8 159534 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 4dc1815991420b809ce18dddfdf9c0af48944204 159535 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 159536 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 4dc1815991420b809ce18dddfdf9c0af48944204 159538 pass c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 159526 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 87a067fd8f4d4f7c6be02c3d38145115ac542017 159539 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 4dc1815991420b809ce18dddfdf9c0af48944204 Searching for interesting versions Result found: flight 159475 (pass), for basis pass For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25, results HASH(0x56365ad9db60) HASH(0x56365ad7e7e0) HASH(0x56365ada2918) For basis failure, parent search stopping at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895\ af2840d85c524f0bd11a38aac308308 e8185c5f01c68f7d29d23a4a91bc1be1ff2cc1ca, results HASH(0x56365ad86890) HASH(0x56365ad81890) Result found: flight 159487 (fail), for basis failure (at ancestor ~75) Repro found: flight 159525 (pass), for basis pass Repro found: flight 159526 (fail), for basis failure 0 revisions at c3038e718a19fc596f7b1baba0f83d5146dc7784 c530a75c1e6a472b0eb9558310b518f0dfcd8860 3d273dd05e51e5a1ffba3d98c7437ee84e8f8764 7ea428895af2840d85c524f0bd11a38aac308308 2d824791504f4119f04f95bafffec2e37d319c25 No revisions left to test, checking graph state. Result found: flight 159531 (pass), for last pass Result found: flight 159534 (fail), for first failure Repro found: flight 159535 (pass), for last pass Repro found: flight 159536 (fail), for first failure Repro found: flight 159538 (pass), for last pass Repro found: flight 159539 (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/159539/ commit 4dc1815991420b809ce18dddfdf9c0af48944204 Author: Jan Beulich <jbeulich@xxxxxxxx> 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@xxxxxxxxxx/ 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@xxxxxxxxxx> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Release-Acked-by: Ian Jackson <iwj@xxxxxxxxxxxxxx> Revision graph left in /home/logs/results/bisect/xen-unstable/test-amd64-i386-xl-qemut-ws16-amd64.xen-boot.{dot,ps,png,html,svg}. ---------------------------------------- 159539: tolerable ALL FAIL flight 159539 xen-unstable real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/159539/ Failures :-/ but no regressions. Tests which did not succeed, including tests which could not be run: test-amd64-i386-xl-qemut-ws16-amd64 8 xen-boot fail baseline untested jobs: test-amd64-i386-xl-qemut-ws16-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
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