failed to run ["/syzkaller/syzkaller/current/bin/syz-manager" "-config" "/syzkaller/managers/ci-upstream-kmsan-gce-root/latest.tmp/workdir/manager.cfg" "-mode=smoke-test" "-vv=2"]: exit status 2, exit code 2 2026/06/18 23:12:18 GCE initialized: running on ci, internal IP 10.128.0.169, project syzkaller, zone us-central1-c, net https://www.googleapis.com/compute/v1/projects/syzkaller/global/networks/default/https://www.googleapis.com/compute/v1/projects/syzkaller/regions/us-central1/subnetworks/default 2026/06/18 23:12:18 uploading image /syzkaller/managers/ci-upstream-kmsan-gce-root/latest.tmp/image to syzkaller/disks/ci-upstream-kmsan-gce-root-test-image.tar.gz... 2026/06/18 23:12:33 creating GCE image ci-upstream-kmsan-gce-root-test... 2026/06/18 23:13:52 serving rpc on tcp://30025 2026/06/18 23:13:52 pool: booting instance 2 2026/06/18 23:13:52 pool: booting instance 0 2026/06/18 23:13:52 pool: booting instance 1 2026/06/18 23:13:52 creating instance: ci-upstream-kmsan-gce-root-test-2 2026/06/18 23:13:52 creating instance: ci-upstream-kmsan-gce-root-test-1 2026/06/18 23:13:52 creating instance: ci-upstream-kmsan-gce-root-test-0 2026/06/18 23:14:01 wait instance to boot: ci-upstream-kmsan-gce-root-test-2 (10.128.1.42) 2026/06/18 23:14:03 wait instance to boot: ci-upstream-kmsan-gce-root-test-1 (10.128.1.160) 2026/06/18 23:14:07 wait instance to boot: ci-upstream-kmsan-gce-root-test-0 (10.128.0.131) 2026/06/18 23:16:20 pool: instance 1 created 2026/06/18 23:16:21 pool: instance 0 created 2026/06/18 23:16:31 scp failed: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "-O" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@10.128.1.160:ci-upstream-kmsan-gce-root-test/syz-executor"]: exit status 1 Executing: program /usr/bin/ssh host 10.128.1.160, user root, command scp -v -t ci-upstream-kmsan-gce-root-test/syz-executor debug1: OpenSSH_10.0p2 Debian-7+deb13u4, OpenSSL 3.5.6 7 Apr 2026 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.160 [10.128.1.160] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_10.0p2 Debian-7+deb13u4 Connection timed out during banner exchange Connection to 10.128.1.160 port 22 timed out lost connection 2026/06/18 23:16:41 VM 1: failed with error: failed to copy binary: scp failed: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "-O" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@10.128.1.160:ci-upstream-kmsan-gce-root-test/syz-executor"]: exit status 1 2026/06/18 23:16:45 pool: instance 2 created 2026/06/18 23:17:22 scp failed: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "-O" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@10.128.0.131:ci-upstream-kmsan-gce-root-test/syz-executor"] Executing: program /usr/bin/ssh host 10.128.0.131, user root, command scp -v -t ci-upstream-kmsan-gce-root-test/syz-executor debug1: OpenSSH_10.0p2 Debian-7+deb13u4, OpenSSL 3.5.6 7 Apr 2026 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.131 [10.128.0.131] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_10.0p2 Debian-7+deb13u4 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.9 debug1: compat_banner: match: OpenSSH_9.9 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 10.128.0.131:22 as 'root' debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: mlkem768x25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:EAvWV3GG8odMD+k20F251zjwXNDbyLo/P7N2oY0DvFQ debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory Warning: Permanently added '10.128.0.131' (ED25519) to the list of known hosts. debug1: ssh_packet_send2_wrapped: resetting send seqnr 3 debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: Sending SSH2_MSG_EXT_INFO debug1: expecting SSH2_MSG_NEWKEYS debug1: ssh_packet_read_poll2: resetting read seqnr 3 debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: SSH2_MSG_EXT_INFO received debug1: kex_ext_info_client_parse: server-sig-algs= debug1: kex_ext_info_check_ver: publickey-hostbound@openssh.com=<0> debug1: kex_ext_info_check_ver: ping@openssh.com=<0> debug1: SSH2_MSG_SERVICE_ACCEPT received 2026/06/18 23:17:32 VM 0: failed with error: failed to copy binary: scp failed: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "-O" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@10.128.0.131:ci-upstream-kmsan-gce-root-test/syz-executor"] 2026/06/18 23:17:46 scp failed: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "-O" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@10.128.1.42:ci-upstream-kmsan-gce-root-test/syz-executor"] Executing: program /usr/bin/ssh host 10.128.1.42, user root, command scp -v -t ci-upstream-kmsan-gce-root-test/syz-executor debug1: OpenSSH_10.0p2 Debian-7+deb13u4, OpenSSL 3.5.6 7 Apr 2026 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.42 [10.128.1.42] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_10.0p2 Debian-7+deb13u4 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.9 debug1: compat_banner: match: OpenSSH_9.9 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 10.128.1.42:22 as 'root' debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: mlkem768x25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:EAvWV3GG8odMD+k20F251zjwXNDbyLo/P7N2oY0DvFQ debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory Warning: Permanently added '10.128.1.42' (ED25519) to the list of known hosts. debug1: ssh_packet_send2_wrapped: resetting send seqnr 3 debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: Sending SSH2_MSG_EXT_INFO debug1: expecting SSH2_MSG_NEWKEYS debug1: ssh_packet_read_poll2: resetting read seqnr 3 debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: SSH2_MSG_EXT_INFO received debug1: kex_ext_info_client_parse: server-sig-algs= debug1: kex_ext_info_check_ver: publickey-hostbound@openssh.com=<0> debug1: kex_ext_info_check_ver: ping@openssh.com=<0> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: SSH2_MSG_EXT_INFO received debug1: kex_ext_info_client_parse: server-sig-algs= Authenticated to 10.128.1.42 ([10.128.1.42]:22) using "none". debug1: channel 0: new session [client-session] (inactive timeout: 0) debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0 debug1: Sending command: scp -v -t ci-upstream-kmsan-gce-root-test/syz-executor debug1: pledge: fork scp: debug1: fd 3 clearing O_NONBLOCK Sending file modes: C0755 4667360 syz-executor Sink: C0755 4667360 syz-executor 2026/06/18 23:17:56 VM 2: failed with error: failed to copy binary: scp failed: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "-O" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@10.128.1.42:ci-upstream-kmsan-gce-root-test/syz-executor"] 2026/06/18 23:18:55 pool: booting instance 1 2026/06/18 23:18:55 creating instance: ci-upstream-kmsan-gce-root-test-1 2026/06/18 23:19:12 wait instance to boot: ci-upstream-kmsan-gce-root-test-1 (10.128.0.117) 2026/06/18 23:19:46 pool: booting instance 0 2026/06/18 23:19:47 creating instance: ci-upstream-kmsan-gce-root-test-0 2026/06/18 23:20:00 wait instance to boot: ci-upstream-kmsan-gce-root-test-0 (10.128.0.49) 2026/06/18 23:20:13 pool: booting instance 2 2026/06/18 23:20:13 creating instance: ci-upstream-kmsan-gce-root-test-2 2026/06/18 23:20:21 wait instance to boot: ci-upstream-kmsan-gce-root-test-2 (10.128.0.13) 2026/06/18 23:21:56 pool: instance 1 created 2026/06/18 23:22:18 pool: instance 0 created 2026/06/18 23:23:09 pool: instance 2 created panic: duplicate instance 1 goroutine 279 [running]: github.com/google/syzkaller/pkg/rpcserver.(*server).CreateInstance(0x29517d39a5a0, 0x1, 0x29518e7d5d80, 0x29518f276030) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/rpcserver.go:587 +0x409 github.com/google/syzkaller/pkg/execbackend.(*rpcBackend).RunRequests(0x295180691050, {0x2eb54d0, 0x29518fe180a0}, 0x29517ecd8040, 0x29517fd3eff0, 0x2951804570e0) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/execbackend/rpc.go:58 +0x103 main.(*Manager).fuzzerInstance(0x29517d06f4a0, {0x2eb54d0, 0x29518fe180a0}, 0x29517ecd8040, 0x2951804570e0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-manager/manager.go:646 +0x12b github.com/google/syzkaller/vm/dispatcher.(*Pool[...]).runInstance(0x2ee7e60, {0x2eb54d0, 0x29518fe19900}, 0x295180bd7b80) /syzkaller/gopath/src/github.com/google/syzkaller/vm/dispatcher/pool.go:156 +0x545 github.com/google/syzkaller/vm/dispatcher.(*Pool[...]).Loop.func1() /syzkaller/gopath/src/github.com/google/syzkaller/vm/dispatcher/pool.go:108 +0x6c created by github.com/google/syzkaller/vm/dispatcher.(*Pool[...]).Loop in goroutine 1 /syzkaller/gopath/src/github.com/google/syzkaller/vm/dispatcher/pool.go:106 +0x7b