[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/src_host

Tree: libvirt git://xenbits.xen.org/libvirt.git
Tree: libvirt_gnulib https://git.savannah.gnu.org/git/gnulib.git/
Tree: libvirt_keycodemapdb https://gitlab.com/keycodemap/keycodemapdb.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:  7b8052e19304865477e03a0047062d977309a22f
  Bug not present: d255d18a34a8d53ccc4a019dc07e17b6e8cf6bd1
  Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/133108/


  commit 7b8052e19304865477e03a0047062d977309a22f
  Author: Jan Beulich <JBeulich@xxxxxxxx>
  Date:   Mon Oct 19 04:23:29 2015 -0600
  
      igb: fix NULL derefs due to skipped SR-IOV enabling
      
      [ Upstream commit be06998f96ecb93938ad2cce46c4289bf7cf45bc ]
      
      The combined effect of commits 6423fc3416 ("igb: do not re-init SR-IOV
      during probe") and ceee3450b3 ("igb: make sure SR-IOV init uses the
      right number of queues") causes VFs no longer getting set up, leading
      to NULL pointer dereferences due to the adapter's ->vf_data being NULL
      while ->vfs_allocated_count is non-zero. The first commit not only
      neglected the side effect of igb_sriov_reinit() that the second commit
      tried to account for, but also that of setting IGB_FLAG_HAS_MSIX,
      without which igb_enable_sriov() is effectively a no-op. Calling
      igb_{,re}set_interrupt_capability() as done here seems to address this,
      but I'm not sure whether this is better than sinply reverting the other
      two commits.
      
      Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
      Tested-by: Aaron Brown <aaron.f.brown@xxxxxxxxx>
      Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
      Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>


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--src_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--src_host
 --summary-out=tmp/133108.bisection-summary --basis-template=128858 
--blessings=real,real-bisect linux-3.18 test-amd64-amd64-libvirt-pair 
xen-boot/src_host
Searching for failure / basis pass:
 132969 fail [dst_host=debina1,src_host=debina0] / 132456 
[dst_host=chardonnay1,src_host=chardonnay0] 130367 
[dst_host=chardonnay1,src_host=chardonnay0] 130203 
[dst_host=albana1,src_host=albana0] 130067 
[dst_host=huxelrebe0,src_host=huxelrebe1] 129845 
[dst_host=fiano0,src_host=fiano1] 129760 [dst_host=fiano1,src_host=fiano0] 
128858 [dst_host=elbling0,src_host=elbling1] 128841 
[dst_host=elbling0,src_host=elbling1] 128807 
[dst_host=albana1,src_host=albana0] 128691 ok.
Failure / basis pass flights: 132969 / 128691
(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 https://git.savannah.gnu.org/git/gnulib.git/
Tree: libvirt_keycodemapdb https://gitlab.com/keycodemap/keycodemapdb.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 7c9dcfed5ae6d5874ea0e67e47a6871707b8446a 
8089c00979a5b089cff592c6b91420e595657167 
16e5b0787687d8904dad2c026107409eb9bfcb95 
4c35624dcb3bce026bb08eb04085c187bafff863 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
755eb6403ec722db37f1b8f8b51e0b0ab661c003
Basis pass 1dbf6222dd5e1fedcbe335fc0852ef66e7a92901 
68df637b5f1b5c10370f6981d2a43a5cf74368df 
16e5b0787687d8904dad2c026107409eb9bfcb95 
0d63979c1bc9c85578be4c589768a13dc0a7c5eb 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 
de5b678ca4dcdfa83e322491d478d66df56c1986 
85b00385827e4e061b2ff38b549c03d0f1e66b6a
Generating revisions with ./adhoc-revtuple-generator  
git://xenbits.xen.org/libvirt.git#1dbf6222dd5e1fedcbe335fc0852ef66e7a92901-7c9dcfed5ae6d5874ea0e67e47a6871707b8446a
 
https://git.savannah.gnu.org/git/gnulib.git/#68df637b5f1b5c10370f6981d2a43a5cf74368df-8089c00979a5b089cff592c6b91420e595657167
 
https://gitlab.com/keycodemap/keycodemapdb.git#16e5b0787687d8904dad2c026107409eb9bfcb95-16e5b0787687d8904dad2c026107409eb9bfcb95
 git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git#0d63\
 979c1bc9c85578be4c589768a13dc0a7c5eb-4c35624dcb3bce026bb08eb04085c187bafff863 
git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860
 
git://xenbits.xen.org/qemu-xen-traditional.git#9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149-d0d8ad39ecb51cd7497cd524484fe09f50876798
 
git://xenbits.xen.org/qemu-xen.git#de5b678ca4dcdfa83e322491d478d66df56c1986-de5b678ca4dcdfa83e322491d478d66df56c1986
 git://xenbits.xen.org/xen.git#85b00385827e4e0\
 61b2ff38b549c03d0f1e66b6a-755eb6403ec722db37f1b8f8b51e0b0ab661c003
Auto packing the repository in background for optimum performance.
See "git help gc" for manual housekeeping.
error: The last gc run reported the following. Please correct the root cause
and remove gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to 
remove them.

Auto packing the repository in background for optimum performance.
See "git help gc" for manual housekeeping.
error: The last gc run reported the following. Please correct the root cause
and remove gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to 
remove them.

Loaded 6970 nodes in revision graph
Searching for test results:
 128691 pass 1dbf6222dd5e1fedcbe335fc0852ef66e7a92901 
68df637b5f1b5c10370f6981d2a43a5cf74368df 
16e5b0787687d8904dad2c026107409eb9bfcb95 
0d63979c1bc9c85578be4c589768a13dc0a7c5eb 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 
de5b678ca4dcdfa83e322491d478d66df56c1986 
85b00385827e4e061b2ff38b549c03d0f1e66b6a
 128807 [dst_host=albana1,src_host=albana0]
 128858 [dst_host=elbling0,src_host=elbling1]
 128841 [dst_host=elbling0,src_host=elbling1]
 129760 [dst_host=fiano1,src_host=fiano0]
 129845 [dst_host=fiano0,src_host=fiano1]
 130067 [dst_host=huxelrebe0,src_host=huxelrebe1]
 130203 [dst_host=albana1,src_host=albana0]
 130367 [dst_host=chardonnay1,src_host=chardonnay0]
 130843 fail irrelevant
 130876 fail irrelevant
 130939 fail irrelevant
 131095 fail irrelevant
 131035 fail irrelevant
 131217 pass irrelevant
 131185 pass irrelevant
 131193 pass irrelevant
 131196 pass irrelevant
 131186 fail irrelevant
 131206 fail irrelevant
 131202 pass irrelevant
 131194 pass irrelevant
 131181 pass 1dbf6222dd5e1fedcbe335fc0852ef66e7a92901 
68df637b5f1b5c10370f6981d2a43a5cf74368df 
16e5b0787687d8904dad2c026107409eb9bfcb95 
0d63979c1bc9c85578be4c589768a13dc0a7c5eb 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 
de5b678ca4dcdfa83e322491d478d66df56c1986 
85b00385827e4e061b2ff38b549c03d0f1e66b6a
 131149 fail irrelevant
 131187 pass irrelevant
 131213 fail irrelevant
 131182 fail irrelevant
 131220 fail irrelevant
 131184 fail irrelevant
 131195 pass irrelevant
 131192 fail irrelevant
 131189 fail irrelevant
 131203 pass irrelevant
 131200 pass irrelevant
 131214 pass irrelevant
 131215 pass irrelevant
 131216 fail irrelevant
 131218 fail irrelevant
 131221 pass irrelevant
 131279 fail irrelevant
 131231 fail irrelevant
 131307 fail irrelevant
 131336 fail irrelevant
 131420 fail irrelevant
 131370 fail irrelevant
 131442 fail irrelevant
 131479 fail irrelevant
 131512 fail irrelevant
 131535 fail irrelevant
 131563 fail irrelevant
 131580 fail irrelevant
 131593 fail irrelevant
 131641 fail irrelevant
 131619 fail irrelevant
 131666 fail irrelevant
 131673 fail irrelevant
 131705 fail 0c6ad476a80c728f73571be3bc5c8bfcc44fbfb2 
4652c7bafa60332145f1e05a7de5f48e1bc56226 
16e5b0787687d8904dad2c026107409eb9bfcb95 
fa42fea0d8b49ba65b49a999331950d74827a52d 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
7b6e05c50fc39466fcc685fb6d4216f99af58743
 131749 fail irrelevant
 131729 fail irrelevant
 131769 fail irrelevant
 131990 fail irrelevant
 131969 fail irrelevant
 132066 fail 1b3ea6daaf0e8641571b357242e37fd8a1c33a71 
8089c00979a5b089cff592c6b91420e595657167 
16e5b0787687d8904dad2c026107409eb9bfcb95 
9b5eed105a45ac0557af113b4096132ae7e3e47f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
93a62c544e20ba9e141e411bbaae3d65259d13a3
 132179 fail irrelevant
 132290 fail 40136bd3168a09c2524440d3b734015f0b618a05 
8089c00979a5b089cff592c6b91420e595657167 
16e5b0787687d8904dad2c026107409eb9bfcb95 
9b5eed105a45ac0557af113b4096132ae7e3e47f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
1912f1220cf87aee28349469893f101980714a05
 132408 fail irrelevant
 132456 [dst_host=chardonnay1,src_host=chardonnay0]
 132579 fail irrelevant
 132652 fail irrelevant
 132741 fail irrelevant
 132798 fail irrelevant
 132969 fail 7c9dcfed5ae6d5874ea0e67e47a6871707b8446a 
8089c00979a5b089cff592c6b91420e595657167 
16e5b0787687d8904dad2c026107409eb9bfcb95 
4c35624dcb3bce026bb08eb04085c187bafff863 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
755eb6403ec722db37f1b8f8b51e0b0ab661c003
 133082 pass 1dbf6222dd5e1fedcbe335fc0852ef66e7a92901 
68df637b5f1b5c10370f6981d2a43a5cf74368df 
16e5b0787687d8904dad2c026107409eb9bfcb95 
0d63979c1bc9c85578be4c589768a13dc0a7c5eb 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
9c0eed618f37dd5b4a57c8b3fbc48ef8913e3149 
de5b678ca4dcdfa83e322491d478d66df56c1986 
85b00385827e4e061b2ff38b549c03d0f1e66b6a
 133088 pass 296e05b54b958a5b806456cdd535bb2c1b969a6b 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
0d63979c1bc9c85578be4c589768a13dc0a7c5eb 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
1de3459e0961ff3233392cf21a69cafe9006de59
 133092 pass 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
1c857dc0e69fdba81e5169cf4b3d2a9daaa783eb 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133085 fail 7c9dcfed5ae6d5874ea0e67e47a6871707b8446a 
8089c00979a5b089cff592c6b91420e595657167 
16e5b0787687d8904dad2c026107409eb9bfcb95 
4c35624dcb3bce026bb08eb04085c187bafff863 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
755eb6403ec722db37f1b8f8b51e0b0ab661c003
 133091 pass 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
8b2969d198d4dc340cdda7765862f611e78d154f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133089 fail 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
0e71018abef66f39cf1079ac65561dea14645f7d 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133108 fail 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
7b8052e19304865477e03a0047062d977309a22f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133086 fail 615106fb10f0f8df6fb2c361b1349bdb7dd5a942 
48a6c46b0b7e993aecf5c09386afd554165506ff 
16e5b0787687d8904dad2c026107409eb9bfcb95 
78e0897dd8b321ba1b4a2137778ab7ae7d400af5 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
39611fdee5d138d4d39dc997051c3a7dd23b6df9
 133090 pass 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
4bd29d538c114438570fd0222330a0b17e4c9c8e 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133094 fail 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
3237836242f704e95c2e255620e1a12c98b55a2b 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133096 pass 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
d255d18a34a8d53ccc4a019dc07e17b6e8cf6bd1 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133097 fail 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
e57bb9912c92b17cc4926a6e00c9505fb38b65d0 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133102 fail 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
7b8052e19304865477e03a0047062d977309a22f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133105 fail 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
7b8052e19304865477e03a0047062d977309a22f 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133103 pass 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
d255d18a34a8d53ccc4a019dc07e17b6e8cf6bd1 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
 133107 pass 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
d255d18a34a8d53ccc4a019dc07e17b6e8cf6bd1 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
Searching for interesting versions
 Result found: flight 128691 (pass), for basis pass
 Result found: flight 132969 (fail), for basis failure
 Repro found: flight 133082 (pass), for basis pass
 Repro found: flight 133085 (fail), for basis failure
 0 revisions at 6b00f4f41c88bb5c9b46a7d5603d8fa947b89410 
6ccfbb4ce5d4fa79f7afb48f3648f2e0401523c3 
16e5b0787687d8904dad2c026107409eb9bfcb95 
d255d18a34a8d53ccc4a019dc07e17b6e8cf6bd1 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
de5b678ca4dcdfa83e322491d478d66df56c1986 
6d8ffac1f7a782dc2c7f8df3871a294729ae36bd
No revisions left to test, checking graph state.
 Result found: flight 133096 (pass), for last pass
 Result found: flight 133102 (fail), for first failure
 Repro found: flight 133103 (pass), for last pass
 Repro found: flight 133105 (fail), for first failure
 Repro found: flight 133107 (pass), for last pass
 Repro found: flight 133108 (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:  7b8052e19304865477e03a0047062d977309a22f
  Bug not present: d255d18a34a8d53ccc4a019dc07e17b6e8cf6bd1
  Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/133108/


  commit 7b8052e19304865477e03a0047062d977309a22f
  Author: Jan Beulich <JBeulich@xxxxxxxx>
  Date:   Mon Oct 19 04:23:29 2015 -0600
  
      igb: fix NULL derefs due to skipped SR-IOV enabling
      
      [ Upstream commit be06998f96ecb93938ad2cce46c4289bf7cf45bc ]
      
      The combined effect of commits 6423fc3416 ("igb: do not re-init SR-IOV
      during probe") and ceee3450b3 ("igb: make sure SR-IOV init uses the
      right number of queues") causes VFs no longer getting set up, leading
      to NULL pointer dereferences due to the adapter's ->vf_data being NULL
      while ->vfs_allocated_count is non-zero. The first commit not only
      neglected the side effect of igb_sriov_reinit() that the second commit
      tried to account for, but also that of setting IGB_FLAG_HAS_MSIX,
      without which igb_enable_sriov() is effectively a no-op. Calling
      igb_{,re}set_interrupt_capability() as done here seems to address this,
      but I'm not sure whether this is better than sinply reverting the other
      two commits.
      
      Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
      Tested-by: Aaron Brown <aaron.f.brown@xxxxxxxxx>
      Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
      Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.269627 to fit
pnmtopng: 31 colors found
Revision graph left in 
/home/logs/results/bisect/linux-3.18/test-amd64-amd64-libvirt-pair.xen-boot--src_host.{dot,ps,png,html,svg}.
----------------------------------------
133108: tolerable FAIL

flight 133108 linux-3.18 real-bisect [real]
http://logs.test-lab.xenproject.org/osstest/logs/133108/

Failures :-/ but no regressions.

Tests which did not succeed,
including tests which could not be run:
 test-amd64-amd64-libvirt-pair 10 xen-boot/src_host      fail baseline untested
 test-amd64-amd64-libvirt-pair 11 xen-boot/dst_host      fail baseline untested


jobs:
 build-amd64-libvirt                                          pass    
 test-amd64-amd64-libvirt-pair                                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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