bisecting fixing commit since 0573fed92b671bfe6a302c67bb66471b18a5004d building syzkaller on 2c6f473e0f0965926877f7d05d4203e466d8dcc0 testing commit 0573fed92b671bfe6a302c67bb66471b18a5004d with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool testing current HEAD 9f159ae07f07fc540290f21937231034f554bdd7 testing commit 9f159ae07f07fc540290f21937231034f554bdd7 with gcc (GCC) 8.1.0 all runs: OK # git bisect start 9f159ae07f07fc540290f21937231034f554bdd7 0573fed92b671bfe6a302c67bb66471b18a5004d Bisecting: 59643 revisions left to test after this (roughly 16 steps) [ebda9b46cebc9c1245fcfe96c76525717ef984cc] net-next/hinic:replace multiply and division operators testing commit ebda9b46cebc9c1245fcfe96c76525717ef984cc with gcc (GCC) 8.1.0 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-executor196164164" "root@10.128.1.8:./syz-executor196164164"]: exit status 1 Connection timed out during banner exchange 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-executor575275219" "root@10.128.1.20:./syz-executor575275219"]: exit status 1 Connection timed out during banner exchange 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-executor605204408" "root@10.128.1.43:./syz-executor605204408"]: exit status 1 Connection timed out during banner exchange 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-executor891788215" "root@10.128.1.61:./syz-executor891788215"]: exit status 1 Connection timed out during banner exchange 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-executor339471274" "root@10.128.1.6:./syz-executor339471274"]: exit status 1 Connection timed out during banner exchange 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-executor081809004" "root@10.128.10.1:./syz-executor081809004"]: exit status 1 Connection timed out during banner exchange lost connection run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad ebda9b46cebc9c1245fcfe96c76525717ef984cc Bisecting: 29821 revisions left to test after this (roughly 15 steps) [cedca4180127e097e4823018e748b1635c0667f0] net: gemini: Look up L3 maxlen from table testing commit cedca4180127e097e4823018e748b1635c0667f0 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good cedca4180127e097e4823018e748b1635c0667f0 Bisecting: 14910 revisions left to test after this (roughly 14 steps) [7118883b44b8edfea732aadeb0d4424da3f152b2] fuse: use mtime for readdir cache verification testing commit 7118883b44b8edfea732aadeb0d4424da3f152b2 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good 7118883b44b8edfea732aadeb0d4424da3f152b2 Bisecting: 7565 revisions left to test after this (roughly 13 steps) [da19a102ce87bf3e0a7fe277a659d1fc35330d6d] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma testing commit da19a102ce87bf3e0a7fe277a659d1fc35330d6d with gcc (GCC) 8.1.0 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-executor865464895" "root@10.128.10.57:./syz-executor865464895"]: exit status 1 Connection timed out during banner exchange 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-executor255982484" "root@10.128.10.60:./syz-executor255982484"]: exit status 1 Connection timed out during banner exchange lost connection run #2: OK 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-executor090620902" "root@10.128.15.196:./syz-executor090620902"]: exit status 1 Connection timed out during banner exchange 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-executor727904781" "root@10.128.10.24:./syz-executor727904781"]: exit status 1 Connection timed out during banner exchange 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-executor358863880" "root@10.128.1.16:./syz-executor358863880"]: exit status 1 Connection timed out during banner exchange 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-executor365735367" "root@10.128.15.197:./syz-executor365735367"]: exit status 1 Connection timed out during banner exchange 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-executor716157562" "root@10.128.15.199:./syz-executor716157562"]: exit status 1 Connection timed out during banner exchange lost connection run #8: OK run #9: OK # git bisect skip da19a102ce87bf3e0a7fe277a659d1fc35330d6d Bisecting: 7565 revisions left to test after this (roughly 13 steps) [bda58ee8f8e4c2b6d9949755aa06cc1a8538c069] Merge tag 'perf-core-for-mingo-4.20-20180905' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core testing commit bda58ee8f8e4c2b6d9949755aa06cc1a8538c069 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good bda58ee8f8e4c2b6d9949755aa06cc1a8538c069 Bisecting: 7327 revisions left to test after this (roughly 13 steps) [9703fc8caf36ac65dca1538b23dd137de0b53233] Merge tag 'usb-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb testing commit 9703fc8caf36ac65dca1538b23dd137de0b53233 with gcc (GCC) 8.1.0 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-executor272261198" "root@10.128.0.13:./syz-executor272261198"]: exit status 1 Connection timed out during banner exchange 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-executor023834965" "root@10.128.15.205:./syz-executor023834965"]: exit status 1 Connection timed out during banner exchange 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-executor296107696" "root@10.128.15.208:./syz-executor296107696"]: exit status 1 Connection timed out during banner exchange 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-executor338538212" "root@10.128.15.202:./syz-executor338538212"]: exit status 1 Connection timed out during banner exchange 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-executor161531635" "root@10.128.15.213:./syz-executor161531635"]: exit status 1 Connection timed out during banner exchange 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-executor959023542" "root@10.128.15.214:./syz-executor959023542"]: exit status 1 Connection timed out during banner exchange lost connection run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 9703fc8caf36ac65dca1538b23dd137de0b53233 Bisecting: 4235 revisions left to test after this (roughly 12 steps) [3f80e08f40cdb308589a49077c87632fa4508b21] tcp: add tcp_reset_xmit_timer() helper testing commit 3f80e08f40cdb308589a49077c87632fa4508b21 with gcc (GCC) 8.1.0 run #0: OK 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-executor112522508" "root@10.128.10.61:./syz-executor112522508"]: exit status 1 Connection timed out during banner exchange 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-executor802911262" "root@10.128.15.192:./syz-executor802911262"]: exit status 1 Connection timed out during banner exchange 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-executor282512128" "root@10.128.1.49:./syz-executor282512128"]: exit status 1 Connection timed out during banner exchange lost connection run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 3f80e08f40cdb308589a49077c87632fa4508b21 Bisecting: 1634 revisions left to test after this (roughly 11 steps) [0aa63eb9a904d50527cc5eadb061d16e607dd4c6] liquidio: fix a couple of spelling mistakes testing commit 0aa63eb9a904d50527cc5eadb061d16e607dd4c6 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 0aa63eb9a904d50527cc5eadb061d16e607dd4c6 Bisecting: 816 revisions left to test after this (roughly 10 steps) [d19b93f40e2350e1ce6032df248db88177996720] s390/qeth: re-indent qeth_check_ipa_data() testing commit d19b93f40e2350e1ce6032df248db88177996720 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good d19b93f40e2350e1ce6032df248db88177996720 Bisecting: 366 revisions left to test after this (roughly 9 steps) [d793fb46822ff7408a1767313ef6b12e811baa55] Merge tag 'wireless-drivers-next-for-davem-2018-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next testing commit d793fb46822ff7408a1767313ef6b12e811baa55 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good d793fb46822ff7408a1767313ef6b12e811baa55 Bisecting: 218 revisions left to test after this (roughly 8 steps) [95773dc0862717ab9612d69bc07d0386bd104603] Merge tag 'linux-kselftest-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest testing commit 95773dc0862717ab9612d69bc07d0386bd104603 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good 95773dc0862717ab9612d69bc07d0386bd104603 Bisecting: 108 revisions left to test after this (roughly 7 steps) [06e55addd3f40b5294e448c2cb7605ca4f28c2e3] tun: remove unused parameters testing commit 06e55addd3f40b5294e448c2cb7605ca4f28c2e3 with gcc (GCC) 8.1.0 all runs: OK # git bisect bad 06e55addd3f40b5294e448c2cb7605ca4f28c2e3 Bisecting: 54 revisions left to test after this (roughly 6 steps) [81b059b2187d77b957bf85318dbd4f36d60555e3] qlcnic: remove ndo_poll_controller testing commit 81b059b2187d77b957bf85318dbd4f36d60555e3 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good 81b059b2187d77b957bf85318dbd4f36d60555e3 Bisecting: 26 revisions left to test after this (roughly 5 steps) [418b9a353a821f5d1787fd310d2af31232e9ff32] Merge branch 'net-usb-Check-for-Wake-on-LAN-modes' testing commit 418b9a353a821f5d1787fd310d2af31232e9ff32 with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good 418b9a353a821f5d1787fd310d2af31232e9ff32 Bisecting: 14 revisions left to test after this (roughly 4 steps) [1ad98e9d1bdf4724c0a8532fabd84bf3c457c2bc] tcp/dccp: fix lockdep issue when SYN is backlogged testing commit 1ad98e9d1bdf4724c0a8532fabd84bf3c457c2bc with gcc (GCC) 8.1.0 all runs: crashed: general protection fault in get_work_pool # git bisect good 1ad98e9d1bdf4724c0a8532fabd84bf3c457c2bc Bisecting: 6 revisions left to test after this (roughly 3 steps) [aeadd93f2b0a609f603ac33e574b97a9832d1b90] net: sched: act_ipt: check for underflow in __tcf_ipt_init() testing commit aeadd93f2b0a609f603ac33e574b97a9832d1b90 with gcc (GCC) 8.1.0 run #0: OK 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-executor528063392" "root@10.128.1.40:./syz-executor528063392"]: exit status 1 Connection timed out during banner exchange 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-executor986492116" "root@10.128.10.2:./syz-executor986492116"]: exit status 1 Connection timed out during banner exchange lost connection run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad aeadd93f2b0a609f603ac33e574b97a9832d1b90 Bisecting: 3 revisions left to test after this (roughly 2 steps) [782710e333a526780d65918d669cb96646983ba2] xfrm: reset crypto_done when iterating over multiple input xfrms testing commit 782710e333a526780d65918d669cb96646983ba2 with gcc (GCC) 8.1.0 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-executor338846094" "root@10.128.10.45:./syz-executor338846094"]: exit status 1 Connection timed out during banner exchange 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-executor077242773" "root@10.128.10.46:./syz-executor077242773"]: exit status 1 Connection timed out during banner exchange lost connection run #2: OK 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-executor608193520" "root@10.128.1.50:./syz-executor608193520"]: exit status 1 Connection timed out during banner exchange 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-executor476343951" "root@10.128.10.51:./syz-executor476343951"]: exit status 1 Connection timed out during banner exchange 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-executor106362530" "root@10.128.10.55:./syz-executor106362530"]: exit status 1 Connection timed out during banner exchange 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-executor631277977" "root@10.128.10.56:./syz-executor631277977"]: exit status 1 Connection timed out during banner exchange lost connection run #7: OK run #8: OK run #9: OK # git bisect bad 782710e333a526780d65918d669cb96646983ba2 Bisecting: 1 revision left to test after this (roughly 1 step) [215ab0f021c9fea3c18b75e7d522400ee6a49990] xfrm6: call kfree_skb when skb is toobig testing commit 215ab0f021c9fea3c18b75e7d522400ee6a49990 with gcc (GCC) 8.1.0 run #0: OK 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-executor510503158" "root@10.128.0.182:./syz-executor510503158"]: exit status 1 Connection timed out during banner exchange 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-executor096896989" "root@10.128.0.203:./syz-executor096896989"]: exit status 1 Connection timed out during banner exchange 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-executor396967562" "root@10.128.1.32:./syz-executor396967562"]: exit status 1 Connection timed out during banner exchange 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-executor201389153" "root@10.128.1.34:./syz-executor201389153"]: exit status 1 Connection timed out during banner exchange 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-executor434351180" "root@10.128.1.38:./syz-executor434351180"]: exit status 1 Connection timed out during banner exchange 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-executor595523387" "root@10.128.1.40:./syz-executor595523387"]: exit status 1 Connection timed out during banner exchange 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-executor847136094" "root@10.128.1.29:./syz-executor847136094"]: exit status 1 Connection timed out during banner exchange lost connection run #8: OK run #9: OK # git bisect skip 215ab0f021c9fea3c18b75e7d522400ee6a49990 Bisecting: 1 revision left to test after this (roughly 1 step) [07bf7908950a8b14e81aa1807e3c667eab39287a] xfrm: Validate address prefix lengths in the xfrm selector. testing commit 07bf7908950a8b14e81aa1807e3c667eab39287a with gcc (GCC) 8.1.0 run #0: OK 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-executor829313222" "root@10.128.1.29:./syz-executor829313222"]: exit status 1 Connection timed out during banner exchange 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-executor525884781" "root@10.128.1.30:./syz-executor525884781"]: exit status 1 Connection timed out during banner exchange 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-executor058369000" "root@10.128.0.226:./syz-executor058369000"]: exit status 1 Connection timed out during banner exchange 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-executor218426407" "root@10.128.10.40:./syz-executor218426407"]: exit status 1 Connection timed out during banner exchange lost connection run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 07bf7908950a8b14e81aa1807e3c667eab39287a 07bf7908950a8b14e81aa1807e3c667eab39287a is the first bad commit commit 07bf7908950a8b14e81aa1807e3c667eab39287a Author: Steffen Klassert Date: Wed Aug 1 13:45:11 2018 +0200 xfrm: Validate address prefix lengths in the xfrm selector. We don't validate the address prefix lengths in the xfrm selector we got from userspace. This can lead to undefined behaviour in the address matching functions if the prefix is too big for the given address family. Fix this by checking the prefixes and refuse SA/policy insertation when a prefix is invalid. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: Air Icy Signed-off-by: Steffen Klassert :040000 040000 8e7e03ac85c1683ad04481624b32630fb978280b ca0f00b815ecacedcf4a5ad2b4f1209ff612ef39 M net revisions tested: 21, total time: 4h12m20.501922769s (build: 1h28m24.033990331s, test: 2h35m28.971991609s) first good commit: 07bf7908950a8b14e81aa1807e3c667eab39287a xfrm: Validate address prefix lengths in the xfrm selector. cc: ["davem@davemloft.net" "herbert@gondor.apana.org.au" "linux-kernel@vger.kernel.org" "netdev@vger.kernel.org" "steffen.klassert@secunet.com"]