bisecting cause commit starting from 3bfe1fc46794631366faa3ef075e1b0ff7ba120a building syzkaller on 1656845f45f284c574eb4f8bfe85dd7916a47a3a testing commit 3bfe1fc46794631366faa3ef075e1b0ff7ba120a with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 all runs: crashed: general protection fault in tcf_ife_init testing release v4.5 testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0 all runs: OK # git bisect start v4.6 v4.5 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 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 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-executor339406569" "root@10.128.10.31:./syz-executor339406569"]: exit status 1 ssh: connect to host 10.128.10.31 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-executor324987700" "root@10.128.1.23:./syz-executor324987700"]: exit status 1 ssh: connect to host 10.128.1.23 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-executor034315523" "root@10.128.10.9:./syz-executor034315523"]: exit status 1 ssh: connect to host 10.128.10.9 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-executor289756294" "root@10.128.10.56:./syz-executor289756294"]: exit status 1 ssh: connect to host 10.128.10.56 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-executor796203565" "root@10.128.1.3:./syz-executor796203565"]: exit status 1 ssh: connect to host 10.128.1.3 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-executor233942440" "root@10.128.10.61:./syz-executor233942440"]: exit status 1 ssh: connect to host 10.128.10.61 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-executor678453991" "root@10.128.15.196:./syz-executor678453991"]: exit status 1 ssh: connect to host 10.128.15.196 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 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 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-executor337849265" "root@10.128.1.60:./syz-executor337849265"]: exit status 1 ssh: connect to host 10.128.1.60 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-executor313793884" "root@10.128.1.61:./syz-executor313793884"]: exit status 1 ssh: connect to host 10.128.1.61 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-executor884869387" "root@10.128.0.160:./syz-executor884869387"]: exit status 1 ssh: connect to host 10.128.0.160 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 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-executor935671157" "root@10.128.0.86:./syz-executor935671157"]: exit status 1 ssh: connect to host 10.128.0.86 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-executor084700752" "root@10.128.0.91:./syz-executor084700752"]: exit status 1 ssh: connect to host 10.128.0.91 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-executor145203055" "root@10.128.10.62:./syz-executor145203055"]: exit status 1 ssh: connect to host 10.128.10.62 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-executor808414210" "root@10.128.15.205:./syz-executor808414210"]: exit status 1 ssh: connect to host 10.128.15.205 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-executor746600313" "root@10.128.10.21:./syz-executor746600313"]: exit status 1 ssh: connect to host 10.128.10.21 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 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 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-executor877871123" "root@10.128.10.30:./syz-executor877871123"]: exit status 1 ssh: connect to host 10.128.10.30 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-executor585037910" "root@10.128.1.18:./syz-executor585037910"]: exit status 1 ssh: connect to host 10.128.1.18 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-executor090124221" "root@10.128.0.4:./syz-executor090124221"]: exit status 1 ssh: connect to host 10.128.0.4 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-executor458184696" "root@10.128.1.41:./syz-executor458184696"]: exit status 1 ssh: connect to host 10.128.1.41 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: INFO: rcu detected stall in corrupted 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: INFO: rcu detected stall in cleanup_net # 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 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-executor588516330" "root@10.128.10.29:./syz-executor588516330"]: exit status 1 ssh: connect to host 10.128.10.29 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-executor930793025" "root@10.128.10.42:./syz-executor930793025"]: exit status 1 ssh: connect to host 10.128.10.42 port 22: Connection timed out lost connection run #3: crashed: BUG: spinlock lockup suspected 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: INFO: rcu detected stall in corrupted # 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 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-executor704706075" "root@10.128.15.205:./syz-executor704706075"]: exit status 1 ssh: connect to host 10.128.15.205 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-executor914716350" "root@10.128.15.206:./syz-executor914716350"]: exit status 1 ssh: connect to host 10.128.15.206 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-executor339955973" "root@10.128.15.200:./syz-executor339955973"]: exit status 1 ssh: connect to host 10.128.15.200 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-executor202181280" "root@10.128.15.201:./syz-executor202181280"]: exit status 1 ssh: connect to host 10.128.15.201 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-executor186051455" "root@10.128.15.217:./syz-executor186051455"]: exit status 1 ssh: connect to host 10.128.15.217 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-executor364161234" "root@10.128.10.58:./syz-executor364161234"]: exit status 1 ssh: connect to host 10.128.10.58 port 22: Connection timed out lost connection 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 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-executor515163092" "root@10.128.10.17:./syz-executor515163092"]: exit status 1 ssh: connect to host 10.128.10.17 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-executor962601763" "root@10.128.0.213:./syz-executor962601763"]: exit status 1 ssh: connect to host 10.128.0.213 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-executor803950630" "root@10.128.10.2:./syz-executor803950630"]: exit status 1 ssh: connect to host 10.128.10.2 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-executor299522893" "root@10.128.0.199:./syz-executor299522893"]: exit status 1 ssh: connect to host 10.128.0.199 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-executor927689288" "root@10.128.10.32:./syz-executor927689288"]: exit status 1 ssh: connect to host 10.128.10.32 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 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 :040000 040000 b2ab9a8ebac651bb7a74e3c34ec7f17e622f8f62 2b505241a6a876005d8406e1b085cfb8936147dc M arch revisions tested: 30, total time: 4h16m14.78936477s (build: 2h2m49.220258891s, test: 2h5m31.751327621s) 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): nr2: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr4: 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+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net 0000000000000000 ffff88012b767c18 ffffffff81883110 ffff88012b760180 ffffffff8300a780 ffff88012b767c38 ffffffff811c48d3 ffffffff8300a780 0000000089173700 ffff88012b767c68 ffffffff811c4a03 ffffffff8300a780 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 INFO: rcu_preempt self-detected stall on CPU 1-...: (10461 ticks this GP) idle=ac1/140000000000001/0 softirq=5703/5703 fqs=10437 INFO: rcu_preempt detected stalls on CPUs/tasks: 1-...: (10461 ticks this GP) idle=ac1/140000000000001/0 softirq=5703/5703 fqs=10437 (detected by 0, t=10508 jiffies, g=433, c=432, q=710) Task dump for CPU 1: kworker/u4:0 R running task 12320 6 2 0x00000008 Workqueue: netns cleanup_net 000000000000bea0 ffffffff8261deb0 ffff88012b767b48 ffffffff81081bc7 ffff88012b767b14 00000000811d23fa ffff88012c103fc0 ffff88012b760180 0000000000000001 ffff88012b764000 ffff88012b767bf8 000000002b767b20 Call Trace: (t=10508 jiffies g=433 c=432 q=710) Task dump for CPU 1: kworker/u4:0 R running task 12320 6 2 0x00000008 Workqueue: netns cleanup_net ffff88012b760180 ffff88012c103da0 ffffffff8119ffe3 0000000000000001 ffffffff83072bc0 0000000000000086 ffff88012c103db8 ffffffff811a2dc2 0000000000000002 ffff88012c103de8 ffffffff811dc889 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 [] ? arch_local_irq_restore+0x12/0x19 /./arch/x86/include/asm/paravirt.h:786 [] dump_stack+0xc9/0xd9 /lib/dump_stack.c:56 [] 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+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffffffff83021540 ti: ffffffff83000000 task.ti: ffffffff83000000 RIP: 0010:[] [] native_safe_halt+0x6/0x10 /./arch/x86/include/asm/irqflags.h:50 RSP: 0018:ffffffff83003eb8 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffffffff83000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff82d20ccf RDI: ffffffff81089bf6 RBP: ffffffff83003eb8 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83004000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff83000000 FS: 0000000000000000(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000ef9000 CR3: 00000000b7bc5000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff83003ed8 ffffffff81089c09 ffffffff83000000 ffffffff83004000 ffffffff83003ee8 ffffffff8108a61a ffffffff83003ef8 ffffffff811b80c5 ffffffff83003f40 ffffffff811b84bf ffffffff8336a2e0 ffffffff83004000 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+ #1 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: ffffffff8324cc40 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: 00007eff3538d150 CR3: 000000000301a000 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 ee 54 7f 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