ci starts bisection 2025-08-16 23:29:53.345773582 +0000 UTC m=+125774.541662171
bisecting cause commit starting from 931e46dcbc7e6035a90e9c4a27a84b660e083f0a
building syzkaller on 1804e95e3ff848c11e87e8efe7560f03c011c081
fetch other tags and check if the commit is present
ensuring issue is reproducible on original commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a

testing commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 86ba903d5389083d08550f2758e32f74ae368b3a46290fbb43950da0431d1d18
run #0: crashed: INFO: task hung in corrupted
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: crashed: INFO: task hung in io_wq_put_and_exit
run #14: crashed: INFO: task hung in io_wq_put_and_exit
run #15: crashed: INFO: task hung in io_wq_put_and_exit
run #16: crashed: INFO: task hung in corrupted
run #17: crashed: INFO: task hung in io_wq_put_and_exit
run #18: crashed: INFO: task hung in corrupted
run #19: crashed: INFO: task hung in io_wq_put_and_exit
representative crash: INFO: task hung in corrupted, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 1d141b4f5825ab4bb78c4c64f135830e821771927d0b02ab4cbc39a9724e93e1
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: OK
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: OK
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
kconfig minimization: base=4099 full=8513 leaves diff=2193
split chunks (needed=false): <2193>
split chunk #0 of len 2193 into 5 parts
testing without sub-chunk 1/5
disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed
testing commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: d4e3523bf1e0d2a266bd3cadc69e2df0b4f795a409c5031a425f8e898749d457
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep memleak], they are not needed
testing commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: bfbbd3357934b009f7e4004d822bc1d85bd84cfa5248243aeb7ea8ca6407696c
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: OK
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: INFO: task hung in io_wq_put_and_exit, 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 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: cfa6b0f9dcc306e28138d95eef9e18b5906be1fdb4bd1948e7a1f1cc3aafa157
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
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: task hung in io_wq_put_and_exit, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [locking atomic_sleep memleak ubsan bug_or_warning kasan], they are not needed
testing commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: c9630ab10d96ccc19a8201986b067d037146cb80fac737233bc8f7353f787fda
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
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-executor2539349373" "root@10.128.0.17:./syz-executor2539349373"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.17, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.17 [10.128.0.17] 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+deb12u6
Connection timed out during banner exchange
Connection to 10.128.0.17 port 22 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-executor1250742906" "root@10.128.10.49:./syz-executor1250742906"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.49, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.49 [10.128.10.49] 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+deb12u6
Connection timed out during banner exchange
Connection to 10.128.10.49 port 22 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-executor1056388486" "root@10.128.1.148:./syz-executor1056388486"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.148, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.148 [10.128.1.148] 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+deb12u6
Connection timed out during banner exchange
Connection to 10.128.1.148 port 22 timed out
scp: Connection closed

run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit 931e46dcbc7e6035a90e9c4a27a84b660e083f0a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 636a06e688e5725a275421e9e2a705658773f7a26a489595c3f2cd0b3dea53b0
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: BUG: soft lockup in io_wq_worker
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
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: task hung in io_wq_put_and_exit, types: [HANG]
the chunk can be dropped
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], 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 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: fb6052c4073620d3b0a65a53d108acfe41d55ed1e359a26e8f0e39518e6160bf
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
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-executor3362119605" "root@10.128.0.72:./syz-executor3362119605"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.72, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.72 [10.128.0.72] 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+deb12u6
Connection timed out during banner exchange
Connection to 10.128.0.72 port 22 timed out
scp: Connection closed

run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
testing release v6.15
testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 6cdf0b266d3c0d88443982c2066e54a6f808fc0c3dfa0d194f6202f3d939658d
run #0: basic kernel testing failed: lost connection to test machine
run #1: basic kernel testing failed: lost connection to test machine
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
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-executor1828049697" "root@10.128.1.12:./syz-executor1828049697"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.12, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.12 [10.128.1.12] 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+deb12u6
Connection timed out during banner exchange
Connection to 10.128.1.12 port 22 timed out
scp: Connection closed

run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: OK
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: BUG: soft lockup in smp_call_function, types: [HANG]
testing release v6.14
testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 1ef3b40f78ee6cec521cd681342c8428d2eacaf3cff6f08893f4912a2c3e751a
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
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: task hung in io_wq_put_and_exit, types: [HANG]
testing release v6.12
testing commit adc218676eef25575469234709c2d87185ca223a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: dc15541da4fb248a65d9c211caef3a6d4e1ad5f1da2a7835ad2907e3c6c017c0
all runs: crashed: INFO: task hung in io_wq_put_and_exit
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
testing release v6.10
testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 3bf05e531ff4efbd578eaa880a820e1409a06542b735f03bab82220e6bd47ae0
all runs: OK
false negative chance: 0.000
# git bisect start adc218676eef25575469234709c2d87185ca223a 0c3836482481200ead7b416ca80c68a29cfdaabd
Bisecting: 14868 revisions left to test after this (roughly 14 steps)
[703896be3015db7f8fd8822b18909a5914209a70] Merge tag 'sound-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

testing commit 703896be3015db7f8fd8822b18909a5914209a70 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 1040190c50c16c3a5ccbedf6930e7624264a39cbbca60449cf0e6718509f8ec6
all runs: OK
false negative chance: 0.000
# git bisect good 703896be3015db7f8fd8822b18909a5914209a70
Bisecting: 7452 revisions left to test after this (roughly 13 steps)
[726e2d0cf2bbc14e3bf38491cddda1a56fe18663] Merge tag 'dma-mapping-6.12-2024-09-19' of git://git.infradead.org/users/hch/dma-mapping

testing commit 726e2d0cf2bbc14e3bf38491cddda1a56fe18663 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: a44ca094d6bccf834f59ee0211abd91a72a5170cbdf14c26b3039f47fe31b154
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: OK
run #2: OK
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: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
unable to determine the verdict: 19 good runs (wanted 15), for bad wanted 10 in total, got 20
# git bisect skip 726e2d0cf2bbc14e3bf38491cddda1a56fe18663
Bisecting: 7452 revisions left to test after this (roughly 13 steps)
[ca61d6836e6f4442a77762e1074d2706a2a6e578] firmware: qcom: scm: fix a NULL-pointer dereference

testing commit ca61d6836e6f4442a77762e1074d2706a2a6e578 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 5785ce3cd810b4e56c046f4ce1cccc2f56f3defc8d0333600a123122dcb0503a
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: crashed: INFO: task hung in io_wq_put_and_exit
run #14: crashed: INFO: task hung in io_wq_put_and_exit
run #15: crashed: INFO: task hung in io_wq_put_and_exit
run #16: crashed: INFO: task hung in io_wq_put_and_exit
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
# git bisect bad ca61d6836e6f4442a77762e1074d2706a2a6e578
Bisecting: 6340 revisions left to test after this (roughly 13 steps)
[176000734ee2978121fde22a954eb1eabb204329] Merge tag 'ata-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux

testing commit 176000734ee2978121fde22a954eb1eabb204329 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 95cf30bee7746fc41428b387e6d53d4915c5f04b859e3453d628483651ec2189
all runs: OK
false negative chance: 0.000
# git bisect good 176000734ee2978121fde22a954eb1eabb204329
Bisecting: 3168 revisions left to test after this (roughly 12 steps)
[a1fb2fcbb60650621a7e3238629a8bfb94147b8e] Merge tag 'for-6.12-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

testing commit a1fb2fcbb60650621a7e3238629a8bfb94147b8e gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: cd7fc00446166032f0ef26ed16eda7dcf1de4f3f48003a6d6a59bd87aa335074
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: crashed: INFO: task hung in io_wq_put_and_exit
run #14: crashed: INFO: task hung in io_wq_put_and_exit
run #15: crashed: INFO: task hung in io_wq_put_and_exit
run #16: crashed: INFO: task hung in io_wq_put_and_exit
run #17: OK
run #18: crashed: INFO: task hung in io_wq_put_and_exit
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
# git bisect bad a1fb2fcbb60650621a7e3238629a8bfb94147b8e
Bisecting: 1583 revisions left to test after this (roughly 11 steps)
[171754c3808214d4fd8843eab584599a429deb52] Merge tag 'vfs-6.12.blocksize' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs

testing commit 171754c3808214d4fd8843eab584599a429deb52 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 85c6b5268d9782c74a39bca7cdd35e08a7c00862817d1d781efab49c3a00dfac
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: crashed: INFO: task hung in io_wq_put_and_exit
run #14: crashed: INFO: task hung in io_wq_put_and_exit
run #15: crashed: INFO: task hung in io_wq_put_and_exit
run #16: crashed: INFO: task hung in io_wq_put_and_exit
run #17: crashed: INFO: task hung in io_wq_put_and_exit
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
# git bisect bad 171754c3808214d4fd8843eab584599a429deb52
Bisecting: 683 revisions left to test after this (roughly 10 steps)
[e55ef65510a401862b902dc979441ea10ae25c61] Merge tag 'amd-drm-next-6.12-2024-08-26' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

testing commit e55ef65510a401862b902dc979441ea10ae25c61 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: ad8cf396aab1a37c75963bfe5804153464e7002183eaacb9f83ad5a922849304
all runs: OK
false negative chance: 0.000
# git bisect good e55ef65510a401862b902dc979441ea10ae25c61
Bisecting: 362 revisions left to test after this (roughly 9 steps)
[32bd3eb5fbab954e68adba8c0b6a43cf03605c93] Merge tag 'drm-intel-gt-next-2024-09-06' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next

testing commit 32bd3eb5fbab954e68adba8c0b6a43cf03605c93 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 3b44f0745b167c4abdfbe30e1960405a94929a9ba82ee0f64a7bd90332121f77
all runs: OK
false negative chance: 0.000
# git bisect good 32bd3eb5fbab954e68adba8c0b6a43cf03605c93
Bisecting: 211 revisions left to test after this (roughly 8 steps)
[de848da12f752170c2ebe114804a985314fd5a6a] Merge tag 'drm-next-2024-09-19' of https://gitlab.freedesktop.org/drm/kernel

testing commit de848da12f752170c2ebe114804a985314fd5a6a gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 8c6382dfdef0f52c06a4bc7935692704281ff6d17d74d122fa9f6a9a8877c454
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: OK
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: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
unable to determine the verdict: 18 good runs (wanted 15), for bad wanted 10 in total, got 20
# git bisect skip de848da12f752170c2ebe114804a985314fd5a6a
Bisecting: 211 revisions left to test after this (roughly 8 steps)
[b3e9bfd86658b562a33b1ee8563d59a593327aaf] drm/amdgpu/gfx11: add ring reset callbacks

testing commit b3e9bfd86658b562a33b1ee8563d59a593327aaf gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 2bab1e64d8558b7f5444ca749fddc2a67ae28f731ca759aa70be0b78719b20d0
all runs: OK
false negative chance: 0.000
# git bisect good b3e9bfd86658b562a33b1ee8563d59a593327aaf
Bisecting: 116 revisions left to test after this (roughly 7 steps)
[a1d1eb2f57501b2e7e2076ce89b3f3a666ddbfdd] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

testing commit a1d1eb2f57501b2e7e2076ce89b3f3a666ddbfdd gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 9a0b2c2a559e346e4f6f9516ac5f9b2c08a696a7be2f7166a4fc10313fca83ec
all runs: OK
false negative chance: 0.000
# git bisect good a1d1eb2f57501b2e7e2076ce89b3f3a666ddbfdd
Bisecting: 58 revisions left to test after this (roughly 6 steps)
[729288bc68560b4d5b094cb7a6f794c752ef22a2] kernel/sched: Fix util_est accounting for DELAY_DEQUEUE

testing commit 729288bc68560b4d5b094cb7a6f794c752ef22a2 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: 8e6794a7782303691f0abe06d7fa2e3e0f78746801b4fa1961775186062437a3
run #0: crashed: INFO: task hung in io_wq_put_and_exit
run #1: crashed: INFO: task hung in io_wq_put_and_exit
run #2: crashed: INFO: task hung in io_wq_put_and_exit
run #3: crashed: INFO: task hung in io_wq_put_and_exit
run #4: crashed: INFO: task hung in io_wq_put_and_exit
run #5: crashed: INFO: task hung in io_wq_put_and_exit
run #6: crashed: INFO: task hung in io_wq_put_and_exit
run #7: crashed: INFO: task hung in io_wq_put_and_exit
run #8: crashed: INFO: task hung in io_wq_put_and_exit
run #9: crashed: INFO: task hung in io_wq_put_and_exit
run #10: crashed: INFO: task hung in io_wq_put_and_exit
run #11: crashed: INFO: task hung in io_wq_put_and_exit
run #12: crashed: INFO: task hung in io_wq_put_and_exit
run #13: crashed: INFO: task hung in io_wq_put_and_exit
run #14: crashed: INFO: task hung in io_wq_put_and_exit
run #15: crashed: INFO: task hung in io_wq_put_and_exit
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG]
# git bisect bad 729288bc68560b4d5b094cb7a6f794c752ef22a2
Bisecting: 28 revisions left to test after this (roughly 5 steps)
[abc158c82ae555078aa5dd2d8407c3df0f868904] sched: Prepare generic code for delayed dequeue

testing commit abc158c82ae555078aa5dd2d8407c3df0f868904 gcc
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
kernel signature: cb0844051e0f7fb2f4d61eec9b8d33e168c598ef0db3daf0608a5c3815186448
all runs: OK
false negative chance: 0.000
# git bisect good abc158c82ae555078aa5dd2d8407c3df0f868904
Bisecting: 13 revisions left to test after this (roughly 4 steps)
[9c602adb799e72ee537c0c7ca7e828c3fe2acad6] sched/deadline: Fix schedstats vs deadline servers

reproducer is flaky (0.50 repro chance estimate)
revisions tested: 25, total time: 12h10m49.837131543s (build: 5h16m23.659105535s, test: 5h29m21.595148632s)
error: bisection is taking too long (>12h0m0s), aborting