bisecting cause commit starting from 9455d25f4e3b3d009fa1b810862e5b06229530e4 building syzkaller on 1508f45368a309a3b1196a342b3d64ce7be4cc43 testing commit 9455d25f4e3b3d009fa1b810862e5b06229530e4 with gcc (GCC) 8.1.0 kernel signature: 07861c2bb8dde0f0335d27552308009e763cdc86 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 6ebd1c0e164200c9b70a3f9798db0f1d3ced87ee all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: f2613899e48207ced8d3d66c1b87a2c0962828d8 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: 8dd102c60b99f414b57819e3db72a2ba5325cb08 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: f6da7e10b52f8c89914f24f28defb86d71ce050b all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: 9c78f6d6fd1798ad02ff6f3f7b8b712901fa7f76 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: 0d8c8c40fb9145902181fe22444e9844fca881d8 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: 92e1306c7678abc914167997c5f2373f4194de6a all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: 2dbb5d23636d2bd1bc6ecd317b8e71e87ea8dca5 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: 53b08a71578bac76e4f4ba43fcf6e6a59cac9830 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: 32fbb4cf95880f22c9416d909022ac854606f687 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: 6c611fc90dc4257141da65e7a48d987b8cab200d all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: c7e0a1c94f4554a7fc4591cc8fcddddb34a95ff6 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 kernel signature: 894c97c74ef84d6284ecd35080dd24ec0a9208e6 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 kernel signature: da33d9e17893b349380e6453fb30198e395bdf6e all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 kernel signature: 24c432dd02f2577ac05d47d710eda4061ab00ad0 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 kernel signature: 12f87433f1dde881231168406ab6f1cb5416fc5f all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 kernel signature: 800db7a0f7bb1ddd881448359862a2d8601af39f run #0: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #1: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #2: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #3: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #4: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #5: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #6: crashed: KASAN: global-out-of-bounds in fb_pad_aligned_buffer at addr ADDR run #7: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #8: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer run #9: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 kernel signature: 620eb37a8a7308ac389a266166b5d813fe7e22f1 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 kernel signature: 652282906e4652aa24abacd832bd3af4a68dd7b7 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 kernel signature: 84bf687bf9b06d1b2c66e4364f83874e3a41f291 all runs: crashed: KASAN: global-out-of-bounds Read in fb_pad_aligned_buffer testing release v4.5 testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0 kernel signature: e984469dbf0053693ca8bbb6894b833e39a052ed all runs: OK # git bisect start 2dcd0af568b0cf583645c8a317dd12e344b1c72a b562e44f507e863c6792946e4e1b1449fbbac85d Bisecting: 8131 revisions left to test after this (roughly 13 steps) [6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f] Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup testing commit 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f with gcc (GCC) 5.5.0 kernel signature: 7795bf30c8faaa16f30cff77490e009196ea4934 all runs: OK # git bisect good 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f Bisecting: 3735 revisions left to test after this (roughly 12 steps) [266c73b77706f2d05b4a3e70a5bb702ed35431d6] Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux testing commit 266c73b77706f2d05b4a3e70a5bb702ed35431d6 with gcc (GCC) 5.5.0 /syzkaller/jobs/linux/kernel/net/openvswitch/conntrack.c:540: undefined reference to `nf_nat_icmp_reply_translation' # git bisect skip 266c73b77706f2d05b4a3e70a5bb702ed35431d6 Bisecting: 3735 revisions left to test after this (roughly 12 steps) [4cd05a74cc604ef1cc6ac37a25629e185bcd2cc5] drm/amd/powerplay: notify amdgpu whether dpm is enabled or not. testing commit 4cd05a74cc604ef1cc6ac37a25629e185bcd2cc5 with gcc (GCC) 5.5.0 mm/kasan/kasan.c:501:3: error: too few arguments to function ‘set_track’ # git bisect skip 4cd05a74cc604ef1cc6ac37a25629e185bcd2cc5 Bisecting: 3735 revisions left to test after this (roughly 12 steps) [51c0e87e9a48d081d7ccb40d7454a0fa2935a424] powerpc/eeh: Cache normal BARs, not windows or IOV BARs testing commit 51c0e87e9a48d081d7ccb40d7454a0fa2935a424 with gcc (GCC) 5.5.0 kernel signature: 79b8c018f073611da08f565d859c57db545438f4 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor757980369" "root@10.128.15.224:./syz-executor757980369"]: exit status 1 ssh: connect to host 10.128.15.224 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor414143484" "root@10.128.0.7:./syz-executor414143484"]: exit status 1 ssh: connect to host 10.128.0.7 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor564201259" "root@10.128.0.198:./syz-executor564201259"]: exit status 1 ssh: connect to host 10.128.0.198 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor364066958" "root@10.128.0.6:./syz-executor364066958"]: exit status 1 ssh: connect to host 10.128.0.6 port 22: Connection timed out lost connection run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 51c0e87e9a48d081d7ccb40d7454a0fa2935a424 Bisecting: 35 revisions left to test after this (roughly 5 steps) [a9d4996df1f49dc7b45e55060436cace87f1e0d4] powerpc/mm/book3s-64: Move HPTE-related bits in PTE to upper end testing commit a9d4996df1f49dc7b45e55060436cace87f1e0d4 with gcc (GCC) 5.5.0 kernel signature: aaf3134278c75c2083e5d74a2cb8835ff3cc74c4 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor604210928" "root@10.128.1.13:./syz-executor604210928"]: exit status 1 ssh: connect to host 10.128.1.13 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor781900175" "root@10.128.1.38:./syz-executor781900175"]: exit status 1 ssh: connect to host 10.128.1.38 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor721925026" "root@10.128.10.63:./syz-executor721925026"]: exit status 1 ssh: connect to host 10.128.10.63 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor972363417" "root@10.128.10.16:./syz-executor972363417"]: exit status 1 ssh: connect to host 10.128.10.16 port 22: Connection timed out lost connection run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad a9d4996df1f49dc7b45e55060436cace87f1e0d4 Bisecting: 17 revisions left to test after this (roughly 4 steps) [dc53617c4a3f6ca35641dfd4279720365ce9f4da] powerpc: atomic: Implement atomic{, 64}_*_return_* variants testing commit dc53617c4a3f6ca35641dfd4279720365ce9f4da with gcc (GCC) 5.5.0 kernel signature: 2ef8dfb2ffdef6e3e9fb03b8ee5324bbf4218fc8 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor021288499" "root@10.128.15.232:./syz-executor021288499"]: exit status 1 ssh: connect to host 10.128.15.232 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor146544118" "root@10.128.15.233:./syz-executor146544118"]: exit status 1 ssh: connect to host 10.128.15.233 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor658310365" "root@10.128.0.6:./syz-executor658310365"]: exit status 1 ssh: connect to host 10.128.0.6 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor736978584" "root@10.128.1.37:./syz-executor736978584"]: exit status 1 ssh: connect to host 10.128.1.37 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor530822423" "root@10.128.0.53:./syz-executor530822423"]: exit status 1 ssh: connect to host 10.128.0.53 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor779981194" "root@10.128.15.230:./syz-executor779981194"]: exit status 1 ssh: connect to host 10.128.15.230 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor611710305" "root@10.128.15.202:./syz-executor611710305"]: exit status 1 ssh: connect to host 10.128.15.202 port 22: Connection timed out lost connection run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad dc53617c4a3f6ca35641dfd4279720365ce9f4da Bisecting: 8 revisions left to test after this (roughly 3 steps) [7fbe7a9374f8bb18db653f4693861c8625d01db1] powerpc/powernv: simplify the calculation of iov resource alignment testing commit 7fbe7a9374f8bb18db653f4693861c8625d01db1 with gcc (GCC) 5.5.0 kernel signature: 57587a625c1a7a5cb1dddb8a960b49d93169b7b3 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor666270779" "root@10.128.1.37:./syz-executor666270779"]: exit status 1 ssh: connect to host 10.128.1.37 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor070983774" "root@10.128.10.3:./syz-executor070983774"]: exit status 1 ssh: connect to host 10.128.10.3 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor773043749" "root@10.128.10.22:./syz-executor773043749"]: exit status 1 ssh: connect to host 10.128.10.22 port 22: Connection timed out lost connection run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: INFO: rcu detected stall in cleanup_net run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 7fbe7a9374f8bb18db653f4693861c8625d01db1 Bisecting: 4 revisions left to test after this (roughly 2 steps) [9b4fffa14906fce7aabf1f032ddd7efc7a031bba] powerpc/powernv: new function to access OPAL msglog testing commit 9b4fffa14906fce7aabf1f032ddd7efc7a031bba with gcc (GCC) 5.5.0 kernel signature: fce4076983e0356f24f7d1cb17b89fadbe71a850 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor882636703" "root@10.128.0.39:./syz-executor882636703"]: exit status 1 ssh: connect to host 10.128.0.39 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor833457778" "root@10.128.0.165:./syz-executor833457778"]: exit status 1 ssh: connect to host 10.128.0.165 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor899517225" "root@10.128.0.213:./syz-executor899517225"]: exit status 1 ssh: connect to host 10.128.0.213 port 22: Connection timed out lost connection run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 9b4fffa14906fce7aabf1f032ddd7efc7a031bba Bisecting: 1 revision left to test after this (roughly 1 step) [2e34057929cad8a90b775581216886d22b642e0a] powerpc/xmon: fix typo in usage message testing commit 2e34057929cad8a90b775581216886d22b642e0a with gcc (GCC) 5.5.0 kernel signature: 69977665961a06c599ee807f5e1b2dba8c8cf7ba run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor185211203" "root@10.128.1.56:./syz-executor185211203"]: exit status 1 ssh: connect to host 10.128.1.56 port 22: Connection timed out lost connection run #1: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor442572742" "root@10.128.10.59:./syz-executor442572742"]: exit status 1 ssh: connect to host 10.128.10.59 port 22: Connection timed out lost connection run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor990705773" "root@10.128.0.206:./syz-executor990705773"]: exit status 1 ssh: connect to host 10.128.0.206 port 22: Connection timed out lost connection run #3: crashed: possible deadlock in nf_conntrack_lock run #4: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #5: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #6: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #7: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 2e34057929cad8a90b775581216886d22b642e0a Bisecting: 0 revisions left to test after this (roughly 0 steps) [2de50e9674fc4ca3c6174b04477f69eb26b4ee31] powerpc/powernv: Remove support for p5ioc2 testing commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 with gcc (GCC) 5.5.0 kernel signature: 6ea11d93220ebede4cae925f1d4c476f9d0261cd run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor251614503" "root@10.128.0.124:./syz-executor251614503"]: exit status 1 ssh: connect to host 10.128.0.124 port 22: Connection timed out lost connection run #3: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor203608154" "root@10.128.0.156:./syz-executor203608154"]: exit status 1 ssh: connect to host 10.128.0.156 port 22: Connection timed out lost connection run #4: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor302081009" "root@10.128.0.102:./syz-executor302081009"]: exit status 1 ssh: connect to host 10.128.0.102 port 22: Connection timed out lost connection run #5: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor994132636" "root@10.128.0.190:./syz-executor994132636"]: exit status 1 ssh: connect to host 10.128.0.190 port 22: Connection timed out lost connection run #6: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor769507147" "root@10.128.1.2:./syz-executor769507147"]: exit status 1 ssh: connect to host 10.128.1.2 port 22: Connection timed out lost connection run #7: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/linux/workdir/image/key" "/tmp/syz-executor570882094" "root@10.128.1.47:./syz-executor570882094"]: exit status 1 ssh: connect to host 10.128.1.47 port 22: Connection timed out lost connection run #8: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock run #9: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock # git bisect bad 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 is the first bad commit commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 Author: Russell Currey Date: Mon Feb 8 15:08:20 2016 +1100 powerpc/powernv: Remove support for p5ioc2 "p5ioc2 is used by approximately 2 machines in the world, and has never ever been a supported configuration." The code for p5ioc2 is essentially unused and complicates what is already a very complicated codebase. Its removal is essentially a "free win" in the effort to simplify the powernv PCI code. In addition, support for p5ioc2 has been dropped from skiboot. There's no reason to keep it around in the kernel. Signed-off-by: Russell Currey Acked-by: Gavin Shan Acked-by: Stewart Smith Signed-off-by: Michael Ellerman arch/powerpc/platforms/powernv/Makefile | 2 +- arch/powerpc/platforms/powernv/pci-p5ioc2.c | 271 ---------------------------- arch/powerpc/platforms/powernv/pci.c | 17 +- arch/powerpc/platforms/powernv/pci.h | 152 ++++++++-------- 4 files changed, 74 insertions(+), 368 deletions(-) delete mode 100644 arch/powerpc/platforms/powernv/pci-p5ioc2.c revisions tested: 32, total time: 4h25m4.555235557s (build: 2h19m1.842634787s, test: 2h2m41.209341595s) first bad commit: 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 powerpc/powernv: Remove support for p5ioc2 cc: ["gwshan@linux.vnet.ibm.com" "mpe@ellerman.id.au" "ruscur@russell.cc" "stewart@linux.vnet.ibm.com"] crash: BUG: spinlock lockup suspected in nf_conntrack_lock IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready BUG: spinlock lockup suspected on CPU#1, kworker/u4:0/6 lock: nf_conntrack_locks+0x0/0xe000, .magic: dead4ead, .owner: kworker/u4:0/6, .owner_cpu: 1 CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net 0000000000000000 ffff88012b767c18 ffffffff8195d870 ffff88012b760180 ffffffff8320a780 ffff88012b767c38 ffffffff811c4393 ffffffff8320a780 0000000089173700 ffff88012b767c68 ffffffff811c44c3 ffffffff8320a780 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0x99/0xd9 lib/dump_stack.c:51 [] spin_dump+0x73/0xc0 kernel/locking/spinlock_debug.c:67 [] __spin_lock_debug kernel/locking/spinlock_debug.c:117 [inline] [] do_raw_spin_lock+0xa3/0x160 kernel/locking/spinlock_debug.c:137 [] __raw_spin_lock include/linux/spinlock_api_smp.h:145 [inline] [] _raw_spin_lock+0x3e/0x50 kernel/locking/spinlock.c:151 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xdc/0x110 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x1a9/0x270 net/core/net_namespace.c:431 [] process_one_work+0x21b/0x690 kernel/workqueue.c:2036 [] worker_thread+0x49/0x490 kernel/workqueue.c:2170 [] kthread+0xea/0x100 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468 Sending NMI to all CPUs: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffffffff83221540 ti: ffffffff83200000 task.ti: ffffffff83200000 RIP: 0010:[] [] native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:50 RSP: 0018:ffffffff83203eb8 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffffffff83200000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff82f6e2c0 RDI: ffffffff81089bf6 RBP: ffffffff83203eb8 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83204000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff83200000 FS: 0000000000000000(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c4204ede80 CR3: 00000000b8a89000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff83203ed8 ffffffff81089c09 ffffffff83200000 ffffffff83204000 ffffffff83203ee8 ffffffff8108a61a ffffffff83203ef8 ffffffff811b7b85 ffffffff83203f40 ffffffff811b7f7f ffffffff835922e0 ffffffff83204000 Call Trace: [] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline] [] default_idle+0x29/0x190 arch/x86/kernel/process.c:304 [] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:295 [] default_idle_call+0x25/0x50 kernel/sched/idle.c:92 [] cpuidle_idle_call kernel/sched/idle.c:150 [inline] [] cpu_idle_loop kernel/sched/idle.c:246 [inline] [] cpu_startup_entry+0x3cf/0x460 kernel/sched/idle.c:294 [] rest_init+0x131/0x140 init/main.c:412 [] start_kernel+0x44a/0x457 init/main.c:683 [] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:203 [] x86_64_start_kernel+0x145/0x152 arch/x86/kernel/head64.c:184 Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 NMI backtrace for cpu 1 CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net task: ffff88012b760180 ti: ffff88012b764000 task.ti: ffff88012b764000 RIP: 0010:[] [] native_write_msr_safe+0x6/0x40 arch/x86/include/asm/msr.h:132 RSP: 0018:ffff88012b767b68 EFLAGS: 00000086 RAX: 0000000000000400 RBX: ffffffff83471680 RCX: 0000000000000830 RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830 RBP: ffff88012b767b70 R08: 0000000000000400 R09: 0000000000000003 R10: ffff88012b760a30 R11: 0000000000000001 R12: 0000000000080000 R13: 0000000000000001 R14: 0000000000000002 R15: 000000000000a130 FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056280c1e8000 CR3: 000000000321a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff810c261a ffff88012b767bb8 ffffffff810c2701 0000000000000282 0000000000000001 00000000000114e0 0000000000000001 ffffffff810bf280 0000000000000040 0000000000000001 ffff88012b767bc8 ffffffff810c27ce Call Trace: [] __x2apic_send_IPI_mask+0xe1/0x150 arch/x86/kernel/apic/x2apic_phys.c:62 [] x2apic_send_IPI_mask+0xe/0x10 arch/x86/kernel/apic/x2apic_cluster.c:87 [] nmi_raise_cpu_backtrace+0x16/0x20 arch/x86/kernel/apic/hw_nmi.c:33 [] nmi_trigger_all_cpu_backtrace+0x322/0x330 lib/nmi_backtrace.c:85 [] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 [] trigger_all_cpu_backtrace include/linux/nmi.h:41 [inline] [] __spin_lock_debug kernel/locking/spinlock_debug.c:119 [inline] [] do_raw_spin_lock+0xad/0x160 kernel/locking/spinlock_debug.c:137 [] __raw_spin_lock include/linux/spinlock_api_smp.h:145 [inline] [] _raw_spin_lock+0x3e/0x50 kernel/locking/spinlock.c:151 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xdc/0x110 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x1a9/0x270 net/core/net_namespace.c:431 [] process_one_work+0x21b/0x690 kernel/workqueue.c:2036 [] worker_thread+0x49/0x490 kernel/workqueue.c:2170 [] kthread+0xea/0x100 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468 Code: 5b 5d c3 48 c1 e2 20 48 89 d3 31 d2 48 09 c3 48 89 de e8 7e fc 8c 00 48 89 d8 5b 5d c3 0f 1f 84 00 00 00 00 00 89 f0 89 f9 0f 30 <31> c0 0f 1f 44 00 00 c3 41 89 f0 48 89 d6 55 89 c2 48 c1 e6 20 INFO: rcu_preempt self-detected stall on CPU 1-...: (1 GPs behind) idle=a7d/140000000000001/0 softirq=6134/6135 fqs=10439 (t=10500 jiffies g=438 c=437 q=1004) Task dump for CPU 1: kworker/u4:0 R running task 13504 6 2 0x00000008 Workqueue: netns cleanup_net ffff88012b760180 ffff88012c103da0 ffffffff8119faa3 0000000000000001 ffffffff83272c00 0000000000000086 ffff88012c103db8 ffffffff811a2882 0000000000000002 ffff88012c103de8 ffffffff811dc349 ffff88012c117dc0 Call Trace: [] sched_show_task+0xe3/0x180 kernel/sched/core.c:5036 [] dump_cpu_task+0x32/0x40 kernel/sched/core.c:8717 [] rcu_dump_cpu_stacks+0x89/0xe0 kernel/rcu/tree.c:1247 [] print_cpu_stall kernel/rcu/tree.c:1354 [inline] [] check_cpu_stall kernel/rcu/tree.c:1418 [inline] [] __rcu_pending kernel/rcu/tree.c:3906 [inline] [] rcu_pending kernel/rcu/tree.c:3970 [inline] [] rcu_check_callbacks+0x66d/0xa30 kernel/rcu/tree.c:2795 [] update_process_times+0x34/0x60 kernel/time/timer.c:1420 [] tick_sched_handle.isra.20+0x20/0x60 kernel/time/tick-sched.c:152 [] tick_sched_timer+0x38/0x70 kernel/time/tick-sched.c:1088 [] __run_hrtimer kernel/time/hrtimer.c:1248 [inline] [] __hrtimer_run_queues+0x11d/0x4a0 kernel/time/hrtimer.c:1312 [] hrtimer_interrupt+0xaa/0x1b0 kernel/time/hrtimer.c:1346 [] local_apic_timer_interrupt+0x31/0x50 arch/x86/kernel/apic/apic.c:907 [] smp_apic_timer_interrupt+0x38/0x50 arch/x86/kernel/apic/apic.c:931 [] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:687 [] ? kvm_wait+0xbb/0xe0 arch/x86/kernel/kvm.c:612 [] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline] [] kvm_wait+0xca/0xe0 arch/x86/kernel/kvm.c:612 [] pv_wait arch/x86/include/asm/paravirt.h:680 [inline] [] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:449 [inline] [] __pv_queued_spin_lock_slowpath+0x26a/0x2d0 kernel/locking/qspinlock.c:446 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:670 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:84 [inline] [] __spin_lock_debug kernel/locking/spinlock_debug.c:130 [inline] [] do_raw_spin_lock+0x157/0x160 kernel/locking/spinlock_debug.c:137 [] __raw_spin_lock include/linux/spinlock_api_smp.h:145 [inline] [] _raw_spin_lock+0x3e/0x50 kernel/locking/spinlock.c:151 [] spin_lock include/linux/spinlock.h:302 [inline] [] nf_conntrack_lock+0xd/0x50 net/netfilter/nf_conntrack_core.c:74 [] ctnl_untimeout.isra.4+0xdc/0x110 net/netfilter/nfnetlink_cttimeout.c:315 [] cttimeout_net_exit+0x28/0x80 net/netfilter/nfnetlink_cttimeout.c:581 [] ops_exit_list.isra.4+0x33/0x60 net/core/net_namespace.c:134 [] cleanup_net+0x1a9/0x270 net/core/net_namespace.c:431 [] process_one_work+0x21b/0x690 kernel/workqueue.c:2036 [] worker_thread+0x49/0x490 kernel/workqueue.c:2170 [] kthread+0xea/0x100 drivers/block/aoe/aoecmd.c:1312 [] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468