bisecting cause commit starting from cb71b93c2dc36d18a8b05245973328d018272cdf
building syzkaller on 95cb00d1ffccfb9043ac5d91ff8103bbb9befae8
testing commit cb71b93c2dc36d18a8b05245973328d018272cdf
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4497db0a55603ee098d2116ac08a8f0e91659853e248aafc66c423c12444c9d9
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.18
testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f8dbb8db0c916e19973e1646ab92dc3eae981f08a0c6678c6681510083b0e71a
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.17
testing commit f443e374ae131c168a065ea1748feac6b2e76613
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 69d58faef6dc963e21380f2ff8d3b8aa523ed5bf721767b08a7e8da9c5c749e0
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.16
testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 61e938a2db4c9cc6130fd083427d2371eedb7dffb5701ff867e1cb2e78288fa0
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #2: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #3: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #4: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #5: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #6: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #7: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #8: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
run #9: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.15
testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: c3582e71af71e8ba5e5ce25c02565e2a2137882274f0f816601ea5f202e53275
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.14
testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e62ac21fe6ec55e31c2d502e1ccf1e957acc8846cbc651176bdd20c71c7c2ef3
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.13
testing commit 62fb9874f5da54fdb243003b386128037319b219
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 42edf8b2ab87cb241c44615fc92801661e3f8bfeb43691c97abf713ef1c7e599
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.12
testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4df59bcb1f6b7a2e0a86fcacdb512441d6d8f2a5ee3c38773ea7a08ce8f5e441
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.11
testing commit f40ddce88593482919761f74910f42f4b84c004b
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f1ae2dd38545e78a23086ab33623e9df28b334405c76059ca5413da5c5fd1934
all runs: crashed: KASAN: use-after-free Write in sctp_auth_shkey_hold
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: d2e21129725a01ba2815c830b5a7df2f7eea4f20cf3cdd504bb0fe6d14f2fefe
all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 84b8e8593fd4b6ea369bc67f47ee28c8d7908af5b00723d32d0d2302ae6456d0
all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: fe44e5ae52eac104df27b9c1af105330141ece7ac888a56f120bef2280b757f0
all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 50229dde730ae246a85826da729a340cfd952d2af497c35990f1f1dbebf1489a
run #0: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #1: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #2: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #3: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #4: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #5: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #6: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #7: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #8: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #9: boot failed: can't ssh into the instance
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4a60a1d92c53cb9773d09d874a00b827ecaaa710440dfb57cabcff045a7c4e10
all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7b67ef80d8411c7ccc064d704b59466e76b8a61f6b2b2433ef99412bf21f2e66
all runs: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 9f03616d75844b2f700f490b8c2763731affa99fdcd1f24636df6e6988a7fdfe
run #0: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #1: basic kernel testing failed: KASAN: use-after-free Read in __task_pid_nr_ns
run #2: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #3: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #4: basic kernel testing failed: KASAN: use-after-free Read in __task_pid_nr_ns
run #5: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #6: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #7: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #8: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
run #9: basic kernel testing failed: KASAN: use-after-free Read in task_active_pid_ns
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3b1e444f1b849f9a94d68e2d1d1c16504a474afd429e0510e6ba2b2e27e47ddc
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.32:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.31:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.10:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.10' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.2:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.33:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.34:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.36:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.39:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.40:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

run #9: 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.140:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 9f79dc5a26cd6aaa5a5ebe2c264939793219454d2dc7186d19de984339412235
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.128:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.128' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.83:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.83' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.71:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.71' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.55:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.55' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.118:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.118' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.123:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.123' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.2:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.32:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.36:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

run #9: 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.37:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3450734cd1d775e2a21a8e3b0f08e6d36f45dd9dbb29cc72d02b9ea232ebaf66
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.28:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.26:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.39:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.234:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.22:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.31:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.4:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.32:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.16:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

run #9: 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.106:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fd6779f47876626cdc852b0ef6dab45646f80ac896ef0dcb049f16a4f212947f
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.30:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.31:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.21:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.21:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.70:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.70' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.22:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.32:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.26:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.28:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

run #9: 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.74:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.74' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3786d05ba2e15a762607ea2645694422345f0cff2f1f8ad2714ec681da9ad446
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.17:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.21:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.22:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.252:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.100:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.100' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.26:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.27:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.28:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.15:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

run #9: 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.30:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a9e387584c93debcd0e57d3a5b8520fbe4f772287fc3e62064e5cb12de6c9134
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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.116:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.116' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.20:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.139:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.51:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.75:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.1.75' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.228:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.46:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.46' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.144:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.144' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.10.0:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.10.0' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

run #9: 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" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.0.86:./syz-fuzzer"]: exit status 1
Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts.
scp: ./syz-fuzzer: Read-only file system

testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 5ed6f0fa72929b586ea1a451ed47b112234e423f7870c11242bac4847684f194
all runs: boot failed: kernel panic: Attempted to kill init!
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 89cd0737347fc519969a74a8ee8282832e4ca7c7d589e46b6d13c3d22091ff97
all runs: boot failed: kernel panic: Attempted to kill init!
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 77492a1381102b236d3d748ce5114b5fc082fd1a5f56132a6359772ba0a9cb08
all runs: boot failed: kernel panic: Attempted to kill init!
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4f39ae3f577ef5ecde31ab27f695c442c4fdef9542514d66c3c51c945aeb0200
all runs: boot failed: can't ssh into the instance
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 500ed04c378e6efa464a512a7e303610abcbec341e603faecd590b379ec14650
all runs: boot failed: can't ssh into the instance
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7ed0a85598290560971bf780a882bbde41a9a073aa7fa66b0f811b6e7e3ceb7a
all runs: boot failed: can't ssh into the instance
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c
compiler: gcc version 8.4.1 20210217 (GCC) 
kernel signature: 27ad21acfb5c115bea6d30df9c0a3ebe69508c5e254504448ffe4c68b0a5c681
all runs: boot failed: can't ssh into the instance
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12
compiler: gcc version 7.5.0 (GCC) 
kernel signature: 26f9e85c922f2013a5135f03728bb5119bc4d5b2255a8ef819063b9293e544cc
all runs: boot failed: can't ssh into the instance
testing release v4.10
testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd
compiler: gcc version 5.5.0 (GCC) 
kernel signature: 5bbf39b4d8bbeb0aef1123508bcdd0ab8778cef878541a1aefb2d68db3195009
all runs: boot failed: can't ssh into the instance
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826
compiler: gcc version 5.5.0 (GCC) 
kernel signature: 6e2f9c1b1a81cc5035bf829db762344c1335df74b9b7e471cb4d0505c45370f2
all runs: boot failed: can't ssh into the instance
testing release v4.8
testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3
compiler: gcc version 5.5.0 (GCC) 
kernel signature: 856989a81fb3be8740d13019bd1a9883b35b88abb1a22052ccca094325155a1d
all runs: boot failed: can't ssh into the instance
testing release v4.7
testing commit 523d939ef98fd712632d93a5a2b588e477a7565e
compiler: gcc version 5.5.0 (GCC) 
kernel signature: 338eb9f5ecb61a6a32adb80d328291d0d0ea8fca0a49ab64317adf843bca9195
all runs: boot failed: can't ssh into the instance
testing release v4.6
testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a
compiler: gcc version 5.5.0 (GCC) 
kernel signature: b8739750aa927d0ad622800ebbf2bd725572b21340047f136ceb472a7dc029a4
all runs: boot failed: can't ssh into the instance
revisions tested: 35, total time: 6h50m25.214672386s (build: 3h31m49.982753762s, test: 3h11m55.396369637s)
the crash already happened on the oldest tested release
commit msg: Linux 5.11
crash: KASAN: use-after-free Write in sctp_auth_shkey_hold
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic_fetch_add_relaxed include/asm-generic/atomic-instrumented.h:142 [inline]
BUG: KASAN: use-after-free in __refcount_add include/linux/refcount.h:193 [inline]
BUG: KASAN: use-after-free in __refcount_inc include/linux/refcount.h:250 [inline]
BUG: KASAN: use-after-free in refcount_inc include/linux/refcount.h:267 [inline]
BUG: KASAN: use-after-free in sctp_auth_shkey_hold+0x16/0x50 net/sctp/auth.c:112
Write of size 4 at addr ffff88800f475f18 by task syz-executor.5/6090

CPU: 1 PID: 6090 Comm: syz-executor.5 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x9a/0xcc lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report.cold+0x79/0xd5 mm/kasan/report.c:413
 check_memory_region_inline mm/kasan/generic.c:179 [inline]
 check_memory_region+0x13d/0x180 mm/kasan/generic.c:185
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_fetch_add_relaxed include/asm-generic/atomic-instrumented.h:142 [inline]
 __refcount_add include/linux/refcount.h:193 [inline]
 __refcount_inc include/linux/refcount.h:250 [inline]
 refcount_inc include/linux/refcount.h:267 [inline]
 sctp_auth_shkey_hold+0x16/0x50 net/sctp/auth.c:112
 sctp_set_owner_w net/sctp/socket.c:131 [inline]
 sctp_sendmsg_to_asoc+0x10d6/0x1f10 net/sctp/socket.c:1851
 sctp_sendmsg+0x71e/0x17d0 net/sctp/socket.c:2013
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xab/0xe0 net/socket.c:672
 __sys_sendto+0x1a4/0x270 net/socket.c:1975
 __do_sys_sendto net/socket.c:1987 [inline]
 __se_sys_sendto net/socket.c:1983 [inline]
 __x64_sys_sendto+0xd8/0x1b0 net/socket.c:1983
 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fdefd50c199
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdefcc60168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fdefd61f030 RCX: 00007fdefd50c199
RDX: 0000000000000001 RSI: 0000000020000400 RDI: 0000000000000003
RBP: 00007fdefd56613b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcfec40eaf R14: 00007fdefcc60300 R15: 0000000000022000

Allocated by task 6084:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:401 [inline]
 ____kasan_kmalloc.constprop.0+0x82/0xa0 mm/kasan/common.c:429
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:682 [inline]
 sctp_auth_shkey_create+0x69/0x190 net/sctp/auth.c:84
 sctp_auth_asoc_copy_shkeys+0x182/0x2c0 net/sctp/auth.c:363
 sctp_association_init net/sctp/associola.c:256 [inline]
 sctp_association_new+0x1723/0x2100 net/sctp/associola.c:297
 sctp_connect_new_asoc+0x151/0x680 net/sctp/socket.c:1074
 sctp_sendmsg_new_asoc net/sctp/socket.c:1676 [inline]
 sctp_sendmsg+0xee5/0x17d0 net/sctp/socket.c:1986
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xab/0xe0 net/socket.c:672
 __sys_sendto+0x1a4/0x270 net/socket.c:1975
 __do_sys_sendto net/socket.c:1987 [inline]
 __se_sys_sendto net/socket.c:1983 [inline]
 __x64_sys_sendto+0xd8/0x1b0 net/socket.c:1983
 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 6100:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:356
 ____kasan_slab_free+0xe1/0x110 mm/kasan/common.c:362
 kasan_slab_free include/linux/kasan.h:192 [inline]
 slab_free_hook mm/slub.c:1547 [inline]
 slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1580
 slab_free mm/slub.c:3143 [inline]
 kfree+0xdb/0x3b0 mm/slub.c:4139
 sctp_auth_set_key+0x475/0x650 net/sctp/auth.c:862
 sctp_setsockopt_auth_key net/sctp/socket.c:3628 [inline]
 sctp_setsockopt+0x3b7b/0x89a0 net/sctp/socket.c:4611
 __sys_setsockopt+0x198/0x480 net/socket.c:2115
 __do_sys_setsockopt net/socket.c:2126 [inline]
 __se_sys_setsockopt net/socket.c:2123 [inline]
 __x64_sys_setsockopt+0xb5/0x150 net/socket.c:2123
 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff88800f475f00
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 24 bytes inside of
 32-byte region [ffff88800f475f00, ffff88800f475f20)
The buggy address belongs to the page:
page:00000000858222ae refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf475
flags: 0xfff00000000200(slab)
raw: 00fff00000000200 ffffea0000600540 0000000500000005 ffff88800f441a00
raw: 0000000000000000 0000000000400040 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x0(), pid 1, ts 2416928932
 create_dummy_stack mm/page_owner.c:64 [inline]
 register_early_stack+0x61/0xa0 mm/page_owner.c:80
 init_page_owner mm/page_owner.c:90 [inline]
 init_page_owner+0x27/0x700 mm/page_owner.c:83
 kernel_init_freeable+0x376/0x5ca init/main.c:1531
 kernel_init+0x8/0x108 init/main.c:1421
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88800f475e00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
 ffff88800f475e80: 00 00 00 fc fc fc fc fc 00 00 00 00 fc fc fc fc
>ffff88800f475f00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
                            ^
 ffff88800f475f80: 00 00 00 00 fc fc fc fc 00 00 00 00 fc fc fc fc
 ffff88800f476000: 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00
==================================================================