bisecting cause commit starting from 9455d25f4e3b3d009fa1b810862e5b06229530e4 building syzkaller on 1508f45368a309a3b1196a342b3d64ce7be4cc43 testing commit 9455d25f4e3b3d009fa1b810862e5b06229530e4 with gcc (GCC) 8.1.0 kernel signature: 93f7dd3d9dd4f4c9edd089a55e97acef08bbea71 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 5c128c92c6634e9d3016f50e4ea3551e2d318308 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: e9243bec2d267faa0a92a95a45c5e1a0ae8fa3b6 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: 1b3d765fbb02c369268ac83d43ab5bda11a7adcd all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: 9f665b2599b5350426ebd4fd586e2d652571abf2 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: 6e56b314194d29d432e195d7758a6b0668562c94 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: 6bc6396d2bf91379f1bdc90ac51b70288a94cf9f all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: 492973a378d63c718bda292cb731b2e5d3070c85 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: 4e799fc6260d1dd55e209a35d4a3bae18f23a813 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: d8b26a099ae714aee520441aacfef89a13ad8c4a all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: d97caf2f72eb0cbabcc170a4840614045b5620e3 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: 348472345dc6bde8469ab670148b490d2df21b78 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 9acf0f787031928bea231c9f9dbb6ef6a5159d08 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 kernel signature: 0d1e5865999ac121e43afbb8549a0301e6ed0309 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 kernel signature: fdec6ca8839624bc0c22d9b3d1edb2d3af5b27ce all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 kernel signature: decf18f282a0458403cb55d63c914971ac237fa7 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 kernel signature: 7af31a3a65cbc366ec8ebbcda61029f4ba10f137 all runs: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 kernel signature: 1f5d8c37d9ea65ec17bdc9142ca8aeb02cd04f10 run #0: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #1: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #2: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #3: crashed: KASAN: use-after-free Read in bit_putcs run #4: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #5: crashed: KASAN: use-after-free Read in bit_putcs run #6: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #7: crashed: KASAN: use-after-free Read in bit_putcs run #8: crashed: KASAN: use-after-free Read in bit_putcs run #9: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 kernel signature: e5557f5a89fcb435a246b2a78056492af8a2d378 run #0: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #1: crashed: KASAN: use-after-free Read in bit_putcs run #2: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #3: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #4: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #5: crashed: KASAN: use-after-free Read in bit_putcs run #6: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #7: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #8: crashed: KASAN: use-after-free Read in bit_putcs run #9: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 kernel signature: 4f31bbd0f15e6279f532d5bce3fca1b068dd17cf run #0: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #1: crashed: KASAN: use-after-free Read in bit_putcs run #2: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #3: crashed: KASAN: use-after-free Read in bit_putcs run #4: crashed: KASAN: use-after-free Read in bit_putcs run #5: crashed: KASAN: use-after-free Read in bit_putcs run #6: crashed: KASAN: use-after-free Read in bit_putcs run #7: crashed: KASAN: use-after-free Read in bit_putcs run #8: crashed: KASAN: use-after-free Read in bit_putcs run #9: crashed: KASAN: use-after-free Read in bit_putcs testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 kernel signature: da63f2df59edc034ed6c44cc41910f8d62bbb2fa run #0: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #1: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #2: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #3: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #4: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #5: crashed: KASAN: use-after-free Read in bit_putcs run #6: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #7: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #8: crashed: KASAN: slab-out-of-bounds Read in bit_putcs run #9: crashed: KASAN: slab-out-of-bounds Read in bit_putcs testing release v4.5 testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0 kernel signature: 0062eafb61cc384b046759c07e771c6c1e98ae8e 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: e098eb2baf78d6d9c5f01235a5fa34d87e134807 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: a9bbee365958990a804fdb1e3aa387fbd389526f run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock 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-executor591855640" "root@10.128.10.55:./syz-executor591855640"]: exit status 1 ssh: connect to host 10.128.10.55 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-executor399555223" "root@10.128.10.60:./syz-executor399555223"]: exit status 1 ssh: connect to host 10.128.10.60 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: 2f068515945675e7ed49d0ee425fb7f74e9452ff 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-executor398680289" "root@10.128.0.192:./syz-executor398680289"]: exit status 1 ssh: connect to host 10.128.0.192 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-executor594048204" "root@10.128.0.249:./syz-executor594048204"]: exit status 1 ssh: connect to host 10.128.0.249 port 22: Connection timed out lost connection run #2: crashed: BUG: spinlock lockup suspected in nf_conntrack_lock 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: 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: 4fadf21de88cdd2ddd164bc7110f9f4d10c6c741 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock 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-executor701660638" "root@10.128.15.223:./syz-executor701660638"]: exit status 1 ssh: connect to host 10.128.15.223 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-executor065070501" "root@10.128.0.171:./syz-executor065070501"]: exit status 1 ssh: connect to host 10.128.0.171 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-executor752378560" "root@10.128.15.227:./syz-executor752378560"]: exit status 1 ssh: connect to host 10.128.15.227 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 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: d8d67de4d1018bb467d2f79814fdd969cf23738c run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock 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-executor141608434" "root@10.128.1.7:./syz-executor141608434"]: exit status 1 ssh: connect to host 10.128.1.7 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-executor361337513" "root@10.128.0.216:./syz-executor361337513"]: exit status 1 ssh: connect to host 10.128.0.216 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-executor211035124" "root@10.128.1.34:./syz-executor211035124"]: exit status 1 ssh: connect to host 10.128.1.34 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 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: 762600d764152eb02f7e210632d9546f83bc92a6 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-executor415081286" "root@10.128.1.5:./syz-executor415081286"]: exit status 1 ssh: connect to host 10.128.1.5 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-executor277412333" "root@10.128.15.227:./syz-executor277412333"]: exit status 1 ssh: connect to host 10.128.15.227 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-executor296598632" "root@10.128.15.228:./syz-executor296598632"]: exit status 1 ssh: connect to host 10.128.15.228 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-executor159627943" "root@10.128.15.230:./syz-executor159627943"]: 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-executor858926554" "root@10.128.0.129:./syz-executor858926554"]: exit status 1 ssh: connect to host 10.128.0.129 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-executor152176497" "root@10.128.15.233:./syz-executor152176497"]: exit status 1 ssh: connect to host 10.128.15.233 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 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: 93612428f0cd0e11216ca57e9221f7e35610666e 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-executor066174155" "root@10.128.1.54:./syz-executor066174155"]: exit status 1 ssh: connect to host 10.128.1.54 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-executor817982382" "root@10.128.0.22:./syz-executor817982382"]: exit status 1 ssh: connect to host 10.128.0.22 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: INFO: rcu detected stall in corrupted 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: 958151709afbf86e88f6d80e3d3c5640792ca551 run #0: crashed: possible deadlock in nf_conntrack_lock run #1: crashed: possible deadlock in nf_conntrack_lock run #2: crashed: possible deadlock in nf_conntrack_lock 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-executor700630800" "root@10.128.0.161:./syz-executor700630800"]: exit status 1 ssh: connect to host 10.128.0.161 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-executor731424047" "root@10.128.0.173:./syz-executor731424047"]: exit status 1 ssh: connect to host 10.128.0.173 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-executor555676866" "root@10.128.0.124:./syz-executor555676866"]: exit status 1 ssh: connect to host 10.128.0.124 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-executor870754617" "root@10.128.0.179:./syz-executor870754617"]: exit status 1 ssh: connect to host 10.128.0.179 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-executor128656708" "root@10.128.0.183:./syz-executor128656708"]: exit status 1 ssh: connect to host 10.128.0.183 port 22: Connection timed out lost connection run #8: 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-executor164976595" "root@10.128.0.195:./syz-executor164976595"]: exit status 1 ssh: connect to host 10.128.0.195 port 22: Connection timed out lost connection 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: 6h19m11.266987658s (build: 2h22m7.252271913s, test: 3h53m24.928488069s) 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): nr4: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): nr1: 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 ffff88012b76bc18 ffffffff8195d870 ffff88012b766180 ffffffff8320a780 ffff88012b76bc38 ffffffff811c4393 ffffffff8320a780 0000000089173700 ffff88012b76bc68 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: 000000c4200b1ff8 CR3: 00000000b4b5e000 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: ffff88012b766180 ti: ffff88012b768000 task.ti: ffff88012b768000 RIP: 0010:[] [] native_write_msr_safe+0x6/0x40 arch/x86/include/asm/msr.h:132 RSP: 0018:ffff88012b76bb68 EFLAGS: 00000086 RAX: 0000000000000400 RBX: ffffffff83471680 RCX: 0000000000000830 RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830 RBP: ffff88012b76bb70 R08: 0000000000000400 R09: 0000000000000003 R10: ffff88012b766a30 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: 0000562947f14000 CR3: 000000000321a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff810c261a ffff88012b76bbb8 ffffffff810c2701 0000000000000282 0000000000000001 00000000000114e0 0000000000000001 ffffffff810bf280 0000000000000040 0000000000000001 ffff88012b76bbc8 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-...: (10452 ticks this GP) idle=7fb/140000000000001/0 softirq=5378/5378 fqs=10429 (t=10500 jiffies g=340 c=339 q=835) Task dump for CPU 1: kworker/u4:0 R running task 13504 6 2 0x00000008 Workqueue: netns cleanup_net ffff88012b766180 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