bisecting cause commit starting from 034307507118f7e1b18f8403c85af2216da2dc94
building syzkaller on 1bf9a662c66aa432ff2fe3bf2562578cef626c09
testing commit 034307507118f7e1b18f8403c85af2216da2dc94 with gcc (GCC) 8.1.0
kernel signature: f75d3bb2cbc6bbd09ba59900edaf392afc64d30f8c85626791310021a426d221
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-executor510326211" "root@10.128.10.13:./syz-executor510326211"]: 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-executor708400710" "root@10.128.0.148:./syz-executor708400710"]: 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-executor333871853" "root@10.128.10.57:./syz-executor333871853"]: 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-executor356687720" "root@10.128.10.58:./syz-executor356687720"]: 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-executor018821338" "root@10.128.15.193:./syz-executor018821338"]: 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-executor484115569" "root@10.128.15.196:./syz-executor484115569"]: 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-executor551819036" "root@10.128.15.197:./syz-executor551819036"]: exit status 1
Connection timed out during banner exchange
lost connection

run #7: OK
run #8: OK
run #9: OK
revisions tested: 1, total time: 15m17.478400214s (build: 4m14.960616186s, test: 10m41.370411611s)
error: the crash wasn't reproduced on the original commit