ci2 starts bisection 2025-09-10 03:34:29.610430644 +0000 UTC m=+12262.582553150
bisecting cause commit starting from f777d1112ee597d7f7dd3ca232220873a34ad0c8
building syzkaller on d291dd2d58a1885c00a60561048b6ceb1bf1206a
ensuring issue is reproducible on original commit f777d1112ee597d7f7dd3ca232220873a34ad0c8

testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: d2b92e28b3b93e3ff0422f34b29a5702e9ab8604ac4e07b5995d5080ccbdd35b
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in vga_arb_release
run #3: crashed: INFO: rcu detected stall in vga_arb_release
run #4: crashed: INFO: rcu detected stall in vga_arb_release
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: INFO: rcu detected stall in vga_arb_release
run #11: crashed: INFO: rcu detected stall in vga_arb_release
run #12: crashed: INFO: rcu detected stall in vga_arb_release
run #13: crashed: INFO: rcu detected stall in vga_arb_release
run #14: crashed: INFO: rcu detected stall in vga_arb_release
run #15: crashed: INFO: rcu detected stall in corrupted
run #16: crashed: INFO: rcu detected stall in vga_arb_release
run #17: crashed: INFO: rcu detected stall in vga_arb_release
run #18: crashed: INFO: rcu detected stall in corrupted
run #19: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor4200171844" "root@10.128.0.98:./syz-executor4200171844"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.98, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.98 [10.128.0.98] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
Connection timed out during banner exchange
Connection to 10.128.0.98 port 22 timed out
scp: Connection closed

representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 0c0cfe32fbada3122f1dde55176fe9e2192e149ebddbe364d04402bae43d027e
run #0: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3479620729" "root@10.128.1.255:./syz-executor3479620729"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.255, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.255 [10.128.1.255] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
Connection timed out during banner exchange
Connection to 10.128.1.255 port 22 timed out
scp: Connection closed

run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in vga_arb_release
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in vga_arb_release
run #5: crashed: INFO: rcu detected stall in vga_arb_release
run #6: crashed: INFO: rcu detected stall in vga_arb_release
run #7: crashed: INFO: rcu detected stall in vga_arb_release
run #8: crashed: INFO: rcu detected stall in vga_arb_release
run #9: crashed: INFO: rcu detected stall in vga_arb_release
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
kconfig minimization: base=4092 full=8349 leaves diff=2173
split chunks (needed=false): <2173>
split chunk #0 of len 2173 into 5 parts
testing without sub-chunk 1/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 0961d1f022c4e223060a7abb390cfde82380dd35c98084e296a1d5dad4cf1a41
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in vga_arb_release
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed
testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 774ee58594120cd69823e6c2d95d334fd2be6f9b592932f21fc6d7080fc1a7f8
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: ignore: lost connection to test machine
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: no output from test machine
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 079cd6c24eeb4fc4d747879e4d2a1d412a30eab25cbca39af351f20e2a22f55c
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: no output from test machine
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3947868749" "root@10.128.1.108:./syz-executor3947868749"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.108, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.108 [10.128.1.108] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
Connection timed out during banner exchange
Connection to 10.128.1.108 port 22 timed out
scp: Connection closed

run #5: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3225834013" "root@10.128.1.242:./syz-executor3225834013"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.242, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.242 [10.128.1.242] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
Connection timed out during banner exchange
Connection to 10.128.1.242 port 22 timed out
scp: Connection closed

run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [kasan locking atomic_sleep memleak ubsan bug_or_warning], they are not needed
testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: c9a7beb69640a028413d9c9a83ab50c02b66dc9bc0c74b5adadb86b142b5e487
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: OK
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: OK
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
testing commit f777d1112ee597d7f7dd3ca232220873a34ad0c8 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 2027fc6ef15d1aa34ff640fd14d89537e91935a75e61d1c6c6023130581fc9ce
run #0: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor110494950" "root@10.128.10.25:./syz-executor110494950"]
Executing: program /usr/bin/ssh host 10.128.10.25, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.25 [10.128.10.25] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.10.25:22 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

run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: OK
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
disabling configs for [atomic_sleep memleak ubsan bug_or_warning kasan locking], they are not needed
picked [v6.16 v6.15 v6.14 v6.12 v6.10 v6.8 v6.6 v6.4 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 39 release tags
testing release v6.16
testing commit 038d61fd642278bab63ee8ef722c50d10ab01e8f gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: bb25caf3357c33e1f53ee14ceab9d0743d98468b5a981d6a25ee6ae1dfdd4612
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.15
testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 0f9724e9e15e92c3e1b8c6ec3365024f3f8906c6530d8fb95bc56146c9a15e04
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: OK
run #7: OK
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: OK
run #10: crashed: INFO: rcu detected stall in corrupted
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: INFO: rcu detected stall in corrupted
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.14
testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 3ee7f014dfde01f1a68a5c6e4dea4603554a16593858155af3eeea1bf24e59a3
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: OK
run #10: OK
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: INFO: rcu detected stall in corrupted
run #13: crashed: INFO: rcu detected stall in corrupted
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.12
testing commit adc218676eef25575469234709c2d87185ca223a gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 92c265db6dc9677bdba2f7de61296bfb3b00a70909e0b7ee72fe963d4ab6da14
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: BUG: soft lockup in smp_call_function
run #6: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor26770247" "root@10.128.1.235:./syz-executor26770247"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.235, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.235 [10.128.1.235] port 22.
debug1: connect to address 10.128.1.235 port 22: Connection timed out
ssh: connect to host 10.128.1.235 port 22: Connection timed out
scp: Connection closed

run #7: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor2823167454" "root@10.128.0.226:./syz-executor2823167454"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.226, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.226 [10.128.0.226] port 22.
debug1: connect to address 10.128.0.226 port 22: Connection timed out
ssh: connect to host 10.128.0.226 port 22: Connection timed out
scp: Connection closed

run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: crashed: INFO: rcu detected stall in corrupted
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.10
testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 4192061c83b5722ebf3c157ce8c705c18a114394dd5e6941550d22a32ea8fdec
run #0: crashed: BUG: soft lockup in smp_call_function
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3382622837" "root@10.128.1.92:./syz-executor3382622837"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.92, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.92 [10.128.1.92] port 22.
debug1: connect to address 10.128.1.92 port 22: Connection timed out
ssh: connect to host 10.128.1.92 port 22: Connection timed out
scp: Connection closed

run #3: crashed: INFO: rcu detected stall in corrupted
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: crashed: INFO: rcu detected stall in corrupted
run #19: OK
representative crash: BUG: soft lockup in smp_call_function, types: [HANG]
testing release v6.8
testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: d0182d88cbff2ecdc256bf0ef9423d0290540781a0b0e1de5d0af09b21b7a33a
run #0: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor700052004" "root@10.128.10.5:./syz-executor700052004"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.5, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.5 [10.128.10.5] port 22.
debug1: connect to address 10.128.10.5 port 22: Connection timed out
ssh: connect to host 10.128.10.5 port 22: Connection timed out
scp: Connection closed

run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.6
testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: fda09ffc636ff7858115c802d83703d8e1e20fdf03bd2b381be2b0ca76363dbb
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: crashed: INFO: rcu detected stall in corrupted
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.4
testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 20bfe677d6933c839343026f6a0d333a631d4acda3ad206608f49debfab4e85d
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v6.1
testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
failed building 830b3c68c1fb1e9176028d02ef86f3cf76aa2476: ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
testing release v5.18
testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
failed building 4b0986a3613c92f4ec1bdc7f60ec66fea135991f: scripts/sign-file.c:89:14: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
/usr/include/openssl/err.h:422:1: note: 'ERR_get_error_line' has been explicitly marked deprecated here
scripts/sign-file.c:102:9: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
certs/extract-cert.c:46:14: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
certs/extract-cert.c:59:9: warning: 'ERR_get_error_line' is deprecated [-Wdeprecated-declarations]
ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_sgx_enter_enclave' failed: symbol not defined
llvm-objdump: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
llvm-objcopy: error: 'arch/x86/entry/vdso/vdso64.so.dbg': No such file or directory
testing release v5.15
testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 699e5e58d90357606ff49f1236336a156cb0912e6662832cea7e685c862af65a
run #0: crashed: INFO: rcu detected stall in smp_call_function
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in smp_call_function
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in smp_call_function
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
run #10: crashed: no output from test machine
run #11: crashed: no output from test machine
run #12: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor1358745921" "root@10.128.10.0:./syz-executor1358745921"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.0, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.0 [10.128.10.0] port 22.
debug1: connect to address 10.128.10.0 port 22: Connection timed out
ssh: connect to host 10.128.10.0 port 22: Connection timed out
scp: Connection closed

run #13: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3064719852" "root@10.128.10.2:./syz-executor3064719852"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.2, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.2 [10.128.10.2] port 22.
debug1: connect to address 10.128.10.2 port 22: Connection timed out
ssh: connect to host 10.128.10.2 port 22: Connection timed out
scp: Connection closed

run #14: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor2002968694" "root@10.128.10.5:./syz-executor2002968694"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.5, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.5 [10.128.10.5] port 22.
debug1: connect to address 10.128.10.5 port 22: Connection timed out
ssh: connect to host 10.128.10.5 port 22: Connection timed out
scp: Connection closed

run #15: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3539249396" "root@10.128.0.4:./syz-executor3539249396"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.4, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.4 [10.128.0.4] port 22.
debug1: connect to address 10.128.0.4 port 22: Connection timed out
ssh: connect to host 10.128.0.4 port 22: Connection timed out
scp: Connection closed

run #16: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor4127592386" "root@10.128.1.85:./syz-executor4127592386"]
Executing: program /usr/bin/ssh host 10.128.1.85, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.85 [10.128.1.85] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.1.85:22 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

run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in smp_call_function, types: [HANG UNKNOWN]
testing release v5.12
testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4b62b78a66b8633794220cf70f08838da7d382f3c02f38e895acb95e86ceab73
run #0: crashed: INFO: rcu detected stall in smp_call_function
run #1: crashed: INFO: rcu detected stall in smp_call_function
run #2: crashed: INFO: rcu detected stall in smp_call_function
run #3: crashed: INFO: rcu detected stall in smp_call_function
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor1405114026" "root@10.128.0.187:./syz-executor1405114026"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.187, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.187 [10.128.0.187] port 22.
debug1: connect to address 10.128.0.187 port 22: Connection timed out
ssh: connect to host 10.128.0.187 port 22: Connection timed out
scp: Connection closed

run #9: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor849573438" "root@10.128.1.3:./syz-executor849573438"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.3, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.3 [10.128.1.3] port 22.
debug1: connect to address 10.128.1.3 port 22: Connection timed out
ssh: connect to host 10.128.1.3 port 22: Connection timed out
scp: Connection closed

run #10: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor418654275" "root@10.128.0.22:./syz-executor418654275"]
Executing: program /usr/bin/ssh host 10.128.0.22, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.22 [10.128.0.22] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.0.22:22 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

run #11: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor568320874" "root@10.128.10.27:./syz-executor568320874"]
Executing: program /usr/bin/ssh host 10.128.10.27, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.27 [10.128.10.27] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.10.27:22 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

run #12: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor1921879890" "root@10.128.10.32:./syz-executor1921879890"]
Executing: program /usr/bin/ssh host 10.128.10.32, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.32 [10.128.10.32] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.10.32:22 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

run #13: crashed: INFO: rcu detected stall in smp_call_function
run #14: OK
run #15: crashed: INFO: rcu detected stall in smp_call_function
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: rcu detected stall in smp_call_function, types: [HANG]
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b935dc85450a6646ecd408fc5ba51e94179998d7d709a0e47b518d08d59a7a20
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: no output from test machine
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor2762626396" "root@10.128.1.59:./syz-executor2762626396"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.59, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.59 [10.128.1.59] port 22.
debug1: connect to address 10.128.1.59 port 22: Connection timed out
ssh: connect to host 10.128.1.59 port 22: Connection timed out
scp: Connection closed

run #9: crashed: no output from test machine
run #10: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor1075817627" "root@10.128.1.210:./syz-executor1075817627"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.210, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.210 [10.128.1.210] port 22.
debug1: connect to address 10.128.1.210 port 22: Connection timed out
ssh: connect to host 10.128.1.210 port 22: Connection timed out
scp: Connection closed

run #11: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor581291551" "root@10.128.10.49:./syz-executor581291551"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.49, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.49 [10.128.10.49] port 22.
debug1: connect to address 10.128.10.49 port 22: Connection timed out
ssh: connect to host 10.128.10.49 port 22: Connection timed out
scp: Connection closed

run #12: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3633271347" "root@10.128.0.165:./syz-executor3633271347"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.165, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.165 [10.128.0.165] port 22.
debug1: connect to address 10.128.0.165 port 22: Connection timed out
ssh: connect to host 10.128.0.165 port 22: Connection timed out
scp: Connection closed

run #13: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor3072347458" "root@10.128.1.253:./syz-executor3072347458"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.253, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.253 [10.128.1.253] port 22.
debug1: connect to address 10.128.1.253 port 22: Connection timed out
ssh: connect to host 10.128.1.253 port 22: Connection timed out
scp: Connection closed

run #14: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor248156954" "root@10.128.10.46:./syz-executor248156954"]
Executing: program /usr/bin/ssh host 10.128.10.46, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.46 [10.128.10.46] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.10.46:22 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

run #15: basic kernel testing failed: failed to copy binary to VM: 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" "/tmp/syz-executor2789115214" "root@10.128.10.57:./syz-executor2789115214"]
Executing: program /usr/bin/ssh host 10.128.10.57, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.57 [10.128.10.57] 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: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7
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 10.128.10.57:22 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

run #16: crashed: INFO: rcu detected stall in corrupted
run #17: crashed: INFO: rcu detected stall in corrupted
run #18: crashed: INFO: rcu detected stall in corrupted
run #19: OK
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3429fe5c8e677ef03cc5b8bcf0e0b9e655982843741d9d6c8544c92593b1c752
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c3677e24c5a18a38a4ff2eff5486f49591740c55bce17b8abc478a41b4efe431
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 73a254b97a6e700e948f1a34fe125f7ebec6c82f35e321465b60694f81724b1f
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 07bfa46cf251985f4a363421b301d89b71e2ece38f52747c4ef9a5c43b1b5322
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0
reproducer is flaky (0.67 repro chance estimate)
revisions tested: 22, total time: 6h40m21.009516309s (build: 59m31.234214874s, test: 5h26m29.946093714s)
error: oldest tested release had kernel build, boot or test errors