[Xen-devel] [linux-3.18 bisection] complete test-amd64-amd64-libvirt-pair

[osstest service owner <osstest-admin@xxxxxxxxxxxxxx>]

branch xen-unstable
xenbranch xen-unstable
job test-amd64-amd64-libvirt-pair
testid xen-boot/dst_host

Tree: libvirt git://xenbits.xen.org/libvirt.git
Tree: libvirt_gnulib git://git.sv.gnu.org/gnulib.git
Tree: linux 
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.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:  linux 
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
  Bug introduced:  24542192519d21719377d89f14654b3afd993a61
  Bug not present: c6f51aabaf400f357eebe8f8f17e8bb39fc033dc
  Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/103932/


  commit 24542192519d21719377d89f14654b3afd993a61
  Author: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
  Date:   Fri Oct 21 06:33:32 2016 -0700
  
      scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) 
devices
      
      [ Upstream commit 1e793f6fc0db920400574211c48f9157a37e3945 ]
      
      Commit 02b01e010afe ("megaraid_sas: return sync cache call with
      success") modified the driver to successfully complete SYNCHRONIZE_CACHE
      commands without passing them to the controller. Disk drive caches are
      only explicitly managed by controller firmware when operating in RAID
      mode. So this commit effectively disabled writeback cache flushing for
      any drives used in JBOD mode, leading to data integrity failures.
      
      [mkp: clarified patch description]
      
      Fixes: 02b01e010afeeb49328d35650d70721d2ca3fd59
      CC: stable@xxxxxxxxxxxxxxx
      Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
      Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
      Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx>
      Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
      Reviewed-by: Ewan D. Milne <emilne@xxxxxxxxxx>
      Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
      Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>


For bisection revision-tuple graph see:
   
http://logs.test-lab.xenproject.org/osstest/results/bisect/linux-3.18/test-amd64-amd64-libvirt-pair.xen-boot--dst_host.html
Revision IDs in each graph node refer, respectively, to the Trees above.

----------------------------------------
Running cs-bisection-step 
--graph-out=/home/logs/results/bisect/linux-3.18/test-amd64-amd64-libvirt-pair.xen-boot--dst_host
 --summary-out=tmp/103934.bisection-summary --basis-template=101675 
--blessings=real,real-bisect --flight=103934 linux-3.18 
test-amd64-amd64-libvirt-pair xen-boot/dst_host
Searching for failure / basis pass:
 103897 fail [dst_host=elbling0,src_host=elbling1] / 101675 
[dst_host=baroque1,src_host=baroque0] 101662 [dst_host=fiano1,src_host=fiano0] 
101648 [dst_host=chardonnay1,src_host=chardonnay0] 101637 
[dst_host=huxelrebe0,src_host=huxelrebe1] 101623 
[dst_host=godello1,src_host=godello0] 101603 
[dst_host=huxelrebe1,src_host=huxelrebe0] 101584 
[dst_host=nobling1,src_host=nobling0] 101570 
[dst_host=nocera0,src_host=nocera1] 101561 [dst_host=pinot0,src_host=pinot1] 
101552 [dst_host=elbling1,src_host=elbling0] 101541 
[dst_host=italia1,src_host=italia0] 101532 [dst_host=nocera1,src_host=nocera0] 
101515 [dst_host=pinot1,src_host=pinot0] 101497 ok.
Failure / basis pass flights: 103897 / 101497
(tree with no url: minios)
(tree with no url: ovmf)
(tree with no url: seabios)
Tree: libvirt git://xenbits.xen.org/libvirt.git
Tree: libvirt_gnulib git://git.sv.gnu.org/gnulib.git
Tree: linux 
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.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 67882e56d1591402c292964960b3a80bd996ee69 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
Basis pass 538220c3c42cad0adbd818b6a931c69492a572de 
e89b4a7aefce9cb02963920712ba7cdd13641644 
3cab355c2ff3a781b6ebe9d1a25bd4ebc1207430 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
570117996772b762e9654e58e708943a4db68b4f 
20295ab63ce7f57edca9c450602ac2dace1fc721
Generating revisions with ./adhoc-revtuple-generator  
git://xenbits.xen.org/libvirt.git#538220c3c42cad0adbd818b6a931c69492a572de-67882e56d1591402c292964960b3a80bd996ee69
 
git://git.sv.gnu.org/gnulib.git#e89b4a7aefce9cb02963920712ba7cdd13641644-c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c
 
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#3cab355c2ff3a781b6ebe9d1a25bd4ebc1207430-ac3d826bef907afe35f80ecccbcdd57223df4b88
 
git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860
 
git://xenbits.xen.org/qemu-xen-traditional.git#c4e0d84d3c92923fdbc7fa922638d54e5e834753-b669e922b37b8957248798a5eb7aa96a666cd3fe
 
git://xenbits.xen.org/qemu-xen.git#570117996772b762e9654e58e708943a4db68b4f-4220231eb22235e757d269722b9f6a594fbcb70f
 
git://xenbits.xen.org/xen.git#20295ab63ce7f57edca9c450602ac2dace1fc721-fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
Loaded 11765 nodes in revision graph
Searching for test results:
 101460 [dst_host=fiano1,src_host=fiano0]
 101466 []
 101470 [dst_host=fiano0,src_host=fiano1]
 101476 [dst_host=chardonnay1,src_host=chardonnay0]
 101480 [dst_host=italia0,src_host=italia1]
 101487 [dst_host=baroque0,src_host=baroque1]
 101483 [dst_host=baroque1,src_host=baroque0]
 101493 [dst_host=chardonnay0,src_host=chardonnay1]
 101532 [dst_host=nocera1,src_host=nocera0]
 101515 [dst_host=pinot1,src_host=pinot0]
 101497 pass 538220c3c42cad0adbd818b6a931c69492a572de 
e89b4a7aefce9cb02963920712ba7cdd13641644 
3cab355c2ff3a781b6ebe9d1a25bd4ebc1207430 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
570117996772b762e9654e58e708943a4db68b4f 
20295ab63ce7f57edca9c450602ac2dace1fc721
 101552 [dst_host=elbling1,src_host=elbling0]
 101541 [dst_host=italia1,src_host=italia0]
 101561 [dst_host=pinot0,src_host=pinot1]
 101570 [dst_host=nocera0,src_host=nocera1]
 101584 [dst_host=nobling1,src_host=nobling0]
 101603 [dst_host=huxelrebe1,src_host=huxelrebe0]
 101648 [dst_host=chardonnay1,src_host=chardonnay0]
 101637 [dst_host=huxelrebe0,src_host=huxelrebe1]
 101623 [dst_host=godello1,src_host=godello0]
 101662 [dst_host=fiano1,src_host=fiano0]
 101675 [dst_host=baroque1,src_host=baroque0]
 102732 fail irrelevant
 102754 fail irrelevant
 102773 fail 655429a0d4a51e7deb533e1d17c1a41360ad2965 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
89c4cbe8d234049b0145e4dc5e5d19d626250b57 
4220231eb22235e757d269722b9f6a594fbcb70f 
a7a578ce6b8634eec30cb8445ea98e18d9b4e9b8
 102823 fail f81b33b50c6cad384d32067c8e28f404f54a530d 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
89c4cbe8d234049b0145e4dc5e5d19d626250b57 
4220231eb22235e757d269722b9f6a594fbcb70f 
a7a578ce6b8634eec30cb8445ea98e18d9b4e9b8
 102875 fail f81b33b50c6cad384d32067c8e28f404f54a530d 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
89c4cbe8d234049b0145e4dc5e5d19d626250b57 
4220231eb22235e757d269722b9f6a594fbcb70f 
a7a578ce6b8634eec30cb8445ea98e18d9b4e9b8
 102974 fail ff8e021225ce5d2ca962ea433172df42f2d52c78 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
89c4cbe8d234049b0145e4dc5e5d19d626250b57 
4220231eb22235e757d269722b9f6a594fbcb70f 
8e4b2676685f50bc26f03b5f62d8b7aea8e69dbf
 102920 fail ff8e021225ce5d2ca962ea433172df42f2d52c78 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
89c4cbe8d234049b0145e4dc5e5d19d626250b57 
4220231eb22235e757d269722b9f6a594fbcb70f 
8e4b2676685f50bc26f03b5f62d8b7aea8e69dbf
 103074 fail irrelevant
 103169 fail irrelevant
 103312 fail irrelevant
 103386 fail irrelevant
 103482 fail 5fe099afddd8fa6d72bcb426ccecfd5c211240e1 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103561 fail 50b2a2375ad0eb26974039647fc705a32b10ac55 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103688 fail 50b2a2375ad0eb26974039647fc705a32b10ac55 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103800 fail 50b2a2375ad0eb26974039647fc705a32b10ac55 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103897 fail 67882e56d1591402c292964960b3a80bd996ee69 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103855 fail 50b2a2375ad0eb26974039647fc705a32b10ac55 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103921 pass 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
2b5408a089d9f8672f89e90f77bc3f958c7263b5 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103928 fail 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
24542192519d21719377d89f14654b3afd993a61 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103912 fail 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
cc30a01ae404cbf0ef1f419cbfab2af77f3c411c 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103905 pass 538220c3c42cad0adbd818b6a931c69492a572de 
e89b4a7aefce9cb02963920712ba7cdd13641644 
3cab355c2ff3a781b6ebe9d1a25bd4ebc1207430 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
570117996772b762e9654e58e708943a4db68b4f 
20295ab63ce7f57edca9c450602ac2dace1fc721
 103916 fail 67882e56d1591402c292964960b3a80bd996ee69 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103923 fail 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
c0e76eccb785d480713918366e4f63b0d480a5bd 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103931 pass 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
c6f51aabaf400f357eebe8f8f17e8bb39fc033dc 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103906 fail 50b2a2375ad0eb26974039647fc705a32b10ac55 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
b669e922b37b8957248798a5eb7aa96a666cd3fe 
4220231eb22235e757d269722b9f6a594fbcb70f 
fc9229c4bb35c5474fbc67f78e628dcbcc90afc5
 103909 fail 939c50c39011f8b5bb18fabf7b3018bb3c4bf7cc 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
ac3d826bef907afe35f80ecccbcdd57223df4b88 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
89c4cbe8d234049b0145e4dc5e5d19d626250b57 
4220231eb22235e757d269722b9f6a594fbcb70f 
3a782c76036063e9b654fb54e952211ddc1e38f6
 103924 fail 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
24542192519d21719377d89f14654b3afd993a61 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103910 pass 628e343e79e4adee917068d7b0907728eb38f749 
94d81adc2f56c048b7872cd8ae2dd8568aef6dcf 
a6846cfd266b48af1ee7c3c19d5cb60477ca4469 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
6cfcdf037edadba984ccf8476b5d1e2a0940b789 
9fdffbbab3ada427bac07076f042f0265e5ae05f
 103911 pass ae381879f3d7d2d3ae6c80ef7de5dfd74eb10f6f 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
69335972b1c1c9bd7597fc6080b6eb1bd3fbf774 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
6cfcdf037edadba984ccf8476b5d1e2a0940b789 
f6b7fedc896250028cb81dafe9a3f6773aaf1da2
 103925 pass 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
c6f51aabaf400f357eebe8f8f17e8bb39fc033dc 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103917 pass 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
60299e356a54b938af0b0f5c53f58c1ceb8b2ef1 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103919 pass 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
abe571f80e33d3df7741d15cd03a8b95a93f659f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103926 fail 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
24542192519d21719377d89f14654b3afd993a61 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103932 fail 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
24542192519d21719377d89f14654b3afd993a61 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
 103927 pass 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
c6f51aabaf400f357eebe8f8f17e8bb39fc033dc 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
Searching for interesting versions
 Result found: flight 101497 (pass), for basis pass
 Result found: flight 103897 (fail), for basis failure
 Repro found: flight 103905 (pass), for basis pass
 Repro found: flight 103916 (fail), for basis failure
 0 revisions at 6358653596faa51e6db75cdfefa187ffa118a28a 
c3b131294aa42b7997cc9b9a0bbb2934aa27fd6c 
c6f51aabaf400f357eebe8f8f17e8bb39fc033dc 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
c4e0d84d3c92923fdbc7fa922638d54e5e834753 
53307d7a9c749237386eb2ccaa709c786cb5f8a5 
7b5266abfdf7f842c49ce4a52d250e523bc0172d
No revisions left to test, checking graph state.
 Result found: flight 103925 (pass), for last pass
 Result found: flight 103926 (fail), for first failure
 Repro found: flight 103927 (pass), for last pass
 Repro found: flight 103928 (fail), for first failure
 Repro found: flight 103931 (pass), for last pass
 Repro found: flight 103932 (fail), for first failure

*** Found and reproduced problem changeset ***

  Bug is in tree:  linux 
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
  Bug introduced:  24542192519d21719377d89f14654b3afd993a61
  Bug not present: c6f51aabaf400f357eebe8f8f17e8bb39fc033dc
  Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/103932/


  commit 24542192519d21719377d89f14654b3afd993a61
  Author: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
  Date:   Fri Oct 21 06:33:32 2016 -0700
  
      scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) 
devices
      
      [ Upstream commit 1e793f6fc0db920400574211c48f9157a37e3945 ]
      
      Commit 02b01e010afe ("megaraid_sas: return sync cache call with
      success") modified the driver to successfully complete SYNCHRONIZE_CACHE
      commands without passing them to the controller. Disk drive caches are
      only explicitly managed by controller firmware when operating in RAID
      mode. So this commit effectively disabled writeback cache flushing for
      any drives used in JBOD mode, leading to data integrity failures.
      
      [mkp: clarified patch description]
      
      Fixes: 02b01e010afeeb49328d35650d70721d2ca3fd59
      CC: stable@xxxxxxxxxxxxxxx
      Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
      Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxx>
      Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx>
      Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
      Reviewed-by: Ewan D. Milne <emilne@xxxxxxxxxx>
      Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
      Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>

dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.493933 to fit
pnmtopng: 80 colors found
Revision graph left in 
/home/logs/results/bisect/linux-3.18/test-amd64-amd64-libvirt-pair.xen-boot--dst_host.{dot,ps,png,html,svg}.
No revision to test.

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