ci2 starts bisection 2024-01-22 12:11:36.169336674 +0000 UTC m=+249197.704773313 bisecting fixing commit since ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 building syzkaller on 9bd8dcda8c7c494d59bd3132a668f4784ea835c6 ensuring issue is reproducible on original commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6772faf91c1a9ce14a6303fba179bb689fb548e5f3c2a1d806e04a4b1fe764e2 run #0: crashed: possible deadlock in console_unlock run #1: crashed: possible deadlock in console_unlock run #2: crashed: possible deadlock in console_unlock run #3: crashed: possible deadlock in tty_port_tty_get run #4: crashed: possible deadlock in console_unlock run #5: crashed: possible deadlock in tty_port_tty_get run #6: crashed: possible deadlock in tty_port_tty_get run #7: crashed: possible deadlock in tty_port_tty_get run #8: crashed: possible deadlock in console_unlock run #9: crashed: possible deadlock in console_unlock run #10: crashed: possible deadlock in tty_port_tty_get run #11: crashed: possible deadlock in tty_port_tty_get run #12: crashed: possible deadlock in console_unlock run #13: crashed: possible deadlock in tty_port_tty_get run #14: crashed: possible deadlock in tty_port_tty_get run #15: crashed: possible deadlock in console_unlock run #16: crashed: possible deadlock in console_unlock run #17: crashed: possible deadlock in console_unlock run #18: crashed: possible deadlock in console_unlock run #19: crashed: possible deadlock in tty_port_tty_get representative crash: possible deadlock in console_unlock, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8b3d121835c50ff9cd8e683f3454edfdc60dde5982c7d2d4ea0156c5a9092816 run #0: crashed: possible deadlock in console_unlock run #1: crashed: possible deadlock in tty_port_tty_get run #2: crashed: possible deadlock in tty_port_tty_get run #3: crashed: possible deadlock in tty_port_tty_get run #4: crashed: possible deadlock in tty_port_tty_get run #5: crashed: possible deadlock in console_unlock run #6: crashed: possible deadlock in tty_port_tty_get run #7: crashed: possible deadlock in console_unlock run #8: crashed: possible deadlock in console_unlock run #9: crashed: possible deadlock in tty_port_tty_get representative crash: possible deadlock in console_unlock, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=3703 full=7267 leaves diff=1983 split chunks (needed=false): <1983> split chunk #0 of len 1983 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 83f60ec67f7caa12e7cefa5aee9dcbea095d0597c2a4226212bfe7d3d5c804e0 run #0: crashed: possible deadlock in tty_port_tty_get run #1: crashed: possible deadlock in tty_port_tty_get run #2: crashed: possible deadlock in tty_port_tty_get run #3: crashed: possible deadlock in tty_port_tty_get run #4: crashed: possible deadlock in console_unlock run #5: crashed: possible deadlock in tty_port_tty_get run #6: crashed: possible deadlock in tty_port_tty_get run #7: crashed: possible deadlock in console_unlock run #8: crashed: possible deadlock in console_unlock run #9: crashed: possible deadlock in tty_port_tty_get representative crash: possible deadlock in tty_port_tty_get, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 121a897f94e5e6a60920e446efe0fbd4bf0c81c3912de4d8c2b6bd64a9d1ca95 all runs: crashed: possible deadlock in console_unlock representative crash: possible deadlock in console_unlock, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ba1124ef0ce78f774c97e873731377883c70936935651d6f8a91c40d420ec585 all runs: crashed: possible deadlock in console_unlock representative crash: possible deadlock in console_unlock, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06e34ed11aeb7cdf772834d2c00a7c28b9de9e95b7f2b7b31307cca7d08d3bfb all runs: crashed: possible deadlock in console_unlock representative crash: possible deadlock in console_unlock, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a93479bc28bb9d54fe45ca8ea76ffc8225ed51a1af6cf75aebbbfbbaa4fbe99f all runs: crashed: possible deadlock in console_unlock representative crash: possible deadlock in console_unlock, types: [LOCKDEP] the chunk can be dropped disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed determining the merge base between ddcaf49990615eb5659e8f06f5bab4bc3d65c4a5 and 6613476e225e090cc9aad49be7fa504e290dd33d 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5c0c0015f2026180fda97ca8940eccc3527f81b43257d0f6a9e6a81417fc78de all runs: crashed: possible deadlock in console_unlock representative crash: possible deadlock in console_unlock, types: [LOCKDEP] testing current HEAD 6613476e225e090cc9aad49be7fa504e290dd33d testing commit 6613476e225e090cc9aad49be7fa504e290dd33d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0033c6c6a15353d9f6dc6a8104735e896902b2bd778aa68a7503899e56cd532c all runs: OK false negative chance: 0.000 # git bisect start 6613476e225e090cc9aad49be7fa504e290dd33d 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 102496 revisions left to test after this (roughly 17 steps) [1ca06f1c1acecbe02124f14a37cce347b8c1a90c] Merge tag 'xtensa-20221213' of https://github.com/jcmvbkbc/linux-xtensa determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 1ca06f1c1acecbe02124f14a37cce347b8c1a90c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 34c1a67a25dea42d050b4e4cb975afe9b6413e395077c87949e3ea17309ec599 all runs: OK false negative chance: 0.000 # git bisect bad 1ca06f1c1acecbe02124f14a37cce347b8c1a90c Bisecting: 50558 revisions left to test after this (roughly 16 steps) [7e062cda7d90543ac8c7700fc7c5527d0c0f22ad] Merge tag 'net-next-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7e062cda7d90543ac8c7700fc7c5527d0c0f22ad gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 51bbb5b7a534ed2e93cebb698907eb41cb2132bab557c2717f794f5f3a18c954 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3119346829" "root@10.128.0.152:./syz-executor3119346829"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.152, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.152 [10.128.0.152] port 22. debug1: connect to address 10.128.0.152 port 22: Connection timed out ssh: connect to host 10.128.0.152 port 22: Connection timed out scp: Connection closed run #1: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor2451453881" "root@10.128.1.74:./syz-executor2451453881"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.74, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.74 [10.128.1.74] port 22. debug1: connect to address 10.128.1.74 port 22: Connection timed out ssh: connect to host 10.128.1.74 port 22: Connection timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor186463956" "root@10.128.1.95:./syz-executor186463956"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.95, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.95 [10.128.1.95] port 22. debug1: connect to address 10.128.1.95 port 22: Connection timed out ssh: connect to host 10.128.1.95 port 22: Connection timed out scp: Connection closed run #3: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor510534677" "root@10.128.1.140:./syz-executor510534677"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.140, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.140 [10.128.1.140] port 22. debug1: connect to address 10.128.1.140 port 22: Connection timed out ssh: connect to host 10.128.1.140 port 22: Connection timed out scp: Connection closed run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 # git bisect bad 7e062cda7d90543ac8c7700fc7c5527d0c0f22ad Bisecting: 25397 revisions left to test after this (roughly 15 steps) [88db8458086b1dcf20b56682504bdb34d2bca0e2] Merge tag 'exfat-for-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 88db8458086b1dcf20b56682504bdb34d2bca0e2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4863cce1f2b6090be58ac105dfdf5cd20ff6a6b91386ed51763243e23773bc85 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 88db8458086b1dcf20b56682504bdb34d2bca0e2 Bisecting: 11993 revisions left to test after this (roughly 14 steps) [b14ffae378aa1db993e62b01392e70d1e585fb23] Merge tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit b14ffae378aa1db993e62b01392e70d1e585fb23 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c5db33d2b8a1437693fd6c639bb8ac10f105784fef9611e115eba751ebad96b all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good b14ffae378aa1db993e62b01392e70d1e585fb23 Bisecting: 5999 revisions left to test after this (roughly 13 steps) [e97e917b0efbfbf5dabffac63c6cacfd765fa403] Merge branch 'atlantic-xdp-multi-buffer' determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit e97e917b0efbfbf5dabffac63c6cacfd765fa403 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8858f778a278a467d6b2dc5dacdef951421894022379c7d3c5ce8c7c60ba4f68 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good e97e917b0efbfbf5dabffac63c6cacfd765fa403 Bisecting: 2984 revisions left to test after this (roughly 12 steps) [076f222a690e11b433d2b1e218dbd9bdb08fb190] Merge tag 'hwmon-for-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging determine whether the revision contains the guilty commit revision b14ffae378aa1db993e62b01392e70d1e585fb23 crashed and is reachable testing commit 076f222a690e11b433d2b1e218dbd9bdb08fb190 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d0d22ffd3262734b9974fc3fe7a7bb1f53177524162f28282025966c301a9236 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 076f222a690e11b433d2b1e218dbd9bdb08fb190 Bisecting: 1467 revisions left to test after this (roughly 11 steps) [1ef0736c0711e2633a59b540931406de626f2836] Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 1ef0736c0711e2633a59b540931406de626f2836 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1a19cf5154f854837282b5ab6e5185718c0278a34b538870100de2d622bdc14e all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 1ef0736c0711e2633a59b540931406de626f2836 Bisecting: 620 revisions left to test after this (roughly 10 steps) [827060261cf3c7b79ee7185d5aa61c851beb9403] Merge tag 'media/v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 827060261cf3c7b79ee7185d5aa61c851beb9403 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 62cd397bde34ff341d1dab057214457e166517405b4937db513b7a77417ac96a all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 827060261cf3c7b79ee7185d5aa61c851beb9403 Bisecting: 339 revisions left to test after this (roughly 8 steps) [8642174b52214dde4d8113f28fb4c9be5a432126] Merge tag 'iomap-5.19-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 8642174b52214dde4d8113f28fb4c9be5a432126 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3e80f50d53987e4b5adebc8c22f163c936936105175f44b4d445d029d676037e all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 8642174b52214dde4d8113f28fb4c9be5a432126 Bisecting: 189 revisions left to test after this (roughly 7 steps) [537e62c865dcb9b91d07ed83f8615b71fa0b51bb] Merge tag 'printk-for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 537e62c865dcb9b91d07ed83f8615b71fa0b51bb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: be429fe6cba01a001193a5a4dbb9269068b40bef426febe48ae61f8487fc248e 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2719530742" "root@10.128.1.64:./syz-executor2719530742"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.64, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.64 [10.128.1.64] port 22. debug1: connect to address 10.128.1.64 port 22: Connection timed out ssh: connect to host 10.128.1.64 port 22: Connection timed out scp: Connection closed run #1: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor3222935912" "root@10.128.1.138:./syz-executor3222935912"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.138, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.138 [10.128.1.138] port 22. debug1: connect to address 10.128.1.138 port 22: Connection timed out ssh: connect to host 10.128.1.138 port 22: Connection timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor678398915" "root@10.128.10.18:./syz-executor678398915"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.18, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.18 [10.128.10.18] port 22. debug1: connect to address 10.128.10.18 port 22: Connection timed out ssh: connect to host 10.128.10.18 port 22: Connection timed out scp: Connection closed run #3: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor2988229755" "root@10.128.10.24:./syz-executor2988229755"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.24, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.24 [10.128.10.24] port 22. debug1: connect to address 10.128.10.24 port 22: Connection timed out ssh: connect to host 10.128.10.24 port 22: Connection timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor4011242394" "root@10.128.1.81:./syz-executor4011242394"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.81, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.81 [10.128.1.81] port 22. debug1: connect to address 10.128.1.81 port 22: Connection timed out ssh: connect to host 10.128.1.81 port 22: Connection timed out scp: Connection closed run #5: OK 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor4109476223" "root@10.128.0.254:./syz-executor4109476223"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.254, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.254 [10.128.0.254] port 22. debug1: connect to address 10.128.0.254 port 22: Connection timed out ssh: connect to host 10.128.0.254 port 22: Connection timed out scp: Connection closed run #7: OK run #8: OK run #9: OK unable to determine the verdict: 4 good runs (wanted 5), for bad wanted 5 in total, got 4 # git bisect skip 537e62c865dcb9b91d07ed83f8615b71fa0b51bb Bisecting: 189 revisions left to test after this (roughly 7 steps) [c26cd04586309e85fe9b15c7c3c9cb83ec5ec70b] f2fs: Convert to release_folio determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit c26cd04586309e85fe9b15c7c3c9cb83ec5ec70b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3a1b73612552be1de94a2704fda6d626424932a914c310d3ef337cbfadf4e75f all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good c26cd04586309e85fe9b15c7c3c9cb83ec5ec70b Bisecting: 118 revisions left to test after this (roughly 7 steps) [88a618920e9baabc1780479e2fbb68e5551d0563] Merge tag 'docs-5.19' of git://git.lwn.net/linux determine whether the revision contains the guilty commit revision 537e62c865dcb9b91d07ed83f8615b71fa0b51bb crashed and is reachable testing commit 88a618920e9baabc1780479e2fbb68e5551d0563 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 35667c4eacf625d6e21c9fa51c18e6f6620666905eb52641306986183b68cf7a 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3156625360" "root@10.128.0.228:./syz-executor3156625360"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.228, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.228 [10.128.0.228] port 22. debug1: connect to address 10.128.0.228 port 22: Connection timed out ssh: connect to host 10.128.0.228 port 22: Connection timed out scp: Connection closed run #1: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor1151177671" "root@10.128.10.7:./syz-executor1151177671"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.7, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.7 [10.128.10.7] port 22. debug1: connect to address 10.128.10.7 port 22: Connection timed out ssh: connect to host 10.128.10.7 port 22: Connection timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3304477745" "root@10.128.0.48:./syz-executor3304477745"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.48, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.48 [10.128.0.48] port 22. debug1: connect to address 10.128.0.48 port 22: Connection timed out ssh: connect to host 10.128.0.48 port 22: Connection timed out scp: Connection closed run #3: OK 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2760547098" "root@10.128.0.152:./syz-executor2760547098"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.152, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.152 [10.128.0.152] 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+deb12u1 Connection timed out during banner exchange Connection to 10.128.0.152 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3511959371" "root@10.128.0.207:./syz-executor3511959371"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.207, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.207 [10.128.0.207] port 22. debug1: connect to address 10.128.0.207 port 22: Connection timed out ssh: connect to host 10.128.0.207 port 22: Connection timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor204598819" "root@10.128.1.54:./syz-executor204598819"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.54, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.54 [10.128.1.54] port 22. debug1: connect to address 10.128.1.54 port 22: Connection timed out ssh: connect to host 10.128.1.54 port 22: Connection timed out scp: Connection closed run #7: OK run #8: OK run #9: OK unable to determine the verdict: 4 good runs (wanted 5), for bad wanted 5 in total, got 4 # git bisect skip 88a618920e9baabc1780479e2fbb68e5551d0563 Bisecting: 118 revisions left to test after this (roughly 7 steps) [08104fb0b1503324b5ecb08be8d06918c2fd01db] Appoint myself page cache maintainer determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 08104fb0b1503324b5ecb08be8d06918c2fd01db gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0237e3df1a9bca5f8451ea74add9ae831ed8a5d0a4a49dbaf813afbe6dcc028f all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 08104fb0b1503324b5ecb08be8d06918c2fd01db Bisecting: 118 revisions left to test after this (roughly 7 steps) [e0bd6f14c28f49219196c81d2d7d0c16bb65986e] docs/ja_JP/index: update section title in Japanese determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit e0bd6f14c28f49219196c81d2d7d0c16bb65986e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f3dc5e45073379ddd5a33b184ebbb35c26fb3546978925d0544ba73bfccc9799 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good e0bd6f14c28f49219196c81d2d7d0c16bb65986e Bisecting: 98 revisions left to test after this (roughly 7 steps) [1c6d2ead87e94f3d2bacb0c4539686ea7a92d50b] Merge tag 'linux-kselftest-next-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest determine whether the revision contains the guilty commit revision 8642174b52214dde4d8113f28fb4c9be5a432126 crashed and is reachable testing commit 1c6d2ead87e94f3d2bacb0c4539686ea7a92d50b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3fbdc9cebd45c6e5c058d48400937747d9364b788d0d2cd25c8465a9c52a8e0d 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1741621332" "root@10.128.1.171:./syz-executor1741621332"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.171, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.171 [10.128.1.171] 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+deb12u1 Connection timed out during banner exchange Connection to 10.128.1.171 port 22 timed out scp: Connection closed run #1: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor2446828980" "root@10.128.10.2:./syz-executor2446828980"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.2, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 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 #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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1728353300" "root@10.128.10.21:./syz-executor1728353300"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.21, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.21 [10.128.10.21] port 22. debug1: connect to address 10.128.10.21 port 22: Connection timed out ssh: connect to host 10.128.10.21 port 22: Connection timed out scp: Connection closed run #3: basic kernel testing failed: failed to copy 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" "-v" "/tmp/syz-executor608658486" "root@10.128.10.19:./syz-executor608658486"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.19, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.19 [10.128.10.19] port 22. debug1: connect to address 10.128.10.19 port 22: Connection timed out ssh: connect to host 10.128.10.19 port 22: Connection timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2463685283" "root@10.128.10.24:./syz-executor2463685283"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.24, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.24 [10.128.10.24] port 22. debug1: connect to address 10.128.10.24 port 22: Connection timed out ssh: connect to host 10.128.10.24 port 22: Connection 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1673079392" "root@10.128.10.22:./syz-executor1673079392"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.22, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.22 [10.128.10.22] 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+deb12u1 Connection timed out during banner exchange Connection to 10.128.10.22 port 22 timed out scp: Connection closed 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2080934826" "root@10.128.0.134:./syz-executor2080934826"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.134, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.134 [10.128.0.134] port 22. debug1: connect to address 10.128.0.134 port 22: Connection timed out ssh: connect to host 10.128.0.134 port 22: Connection timed out scp: Connection closed run #7: OK 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2427072489" "root@10.128.10.28:./syz-executor2427072489"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.28, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.28 [10.128.10.28] port 22. debug1: connect to address 10.128.10.28 port 22: Connection timed out ssh: connect to host 10.128.10.28 port 22: Connection timed out scp: Connection closed run #9: OK unable to determine the verdict: 2 good runs (wanted 5), for bad wanted 5 in total, got 2 # git bisect skip 1c6d2ead87e94f3d2bacb0c4539686ea7a92d50b Bisecting: 98 revisions left to test after this (roughly 7 steps) [481cc97349d694e3211e14a886ad2b7ef55b5a2c] mm,doc: Add new documentation structure determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 481cc97349d694e3211e14a886ad2b7ef55b5a2c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d6adcbde33302f773247ef415db329e1ea7481c779b3789622eaabed8f5d9708 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 481cc97349d694e3211e14a886ad2b7ef55b5a2c Bisecting: 98 revisions left to test after this (roughly 6 steps) [caae9458db3aef14b96921cf02c6093340350c4a] kunit: Introduce _NULL and _NOT_NULL macros determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit caae9458db3aef14b96921cf02c6093340350c4a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c87afda04d6d2ce022f17cf255cceaaade2a6e5cbd55dea52405406abeda027e all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good caae9458db3aef14b96921cf02c6093340350c4a Bisecting: 93 revisions left to test after this (roughly 6 steps) [0453f984a7b9458f0e469afb039f2841308b1bef] kunit: tool: misc cleanups determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 0453f984a7b9458f0e469afb039f2841308b1bef gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 627163b8e1041b33dff9e59666f8b1fbbe4bd51800e2f7721002027e4c64b1a9 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 0453f984a7b9458f0e469afb039f2841308b1bef Bisecting: 63 revisions left to test after this (roughly 6 steps) [ea1d15a067d601cf156c042bd0834acad67db650] selftests/binderfs: Improve message to provide more info determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit ea1d15a067d601cf156c042bd0834acad67db650 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3051d4bfb9fed36b36e4934f16b30ff518f2ba05c666d40ae4dcf153c29b8007 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good ea1d15a067d601cf156c042bd0834acad67db650 Bisecting: 63 revisions left to test after this (roughly 6 steps) [206bc4348603866bf42a6690f26e152522a057dc] input: Docs: correct ntrig.rst typo determine whether the revision contains the guilty commit revision 481cc97349d694e3211e14a886ad2b7ef55b5a2c crashed and is reachable testing commit 206bc4348603866bf42a6690f26e152522a057dc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 90432b5b57bdf6f5677add6dd543e65f11ecd558fa22153b07c01cc69084d777 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 206bc4348603866bf42a6690f26e152522a057dc Bisecting: 63 revisions left to test after this (roughly 6 steps) [9f0844de49cf0557d5c359131004acbb179c174e] printk: get caller_id/timestamp after migration disable determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 9f0844de49cf0557d5c359131004acbb179c174e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 511404d4c5b9b0d28712dfa9218121e2dfd6d26a1c0acc39708acfb52d3437e1 all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 9f0844de49cf0557d5c359131004acbb179c174e Bisecting: 63 revisions left to test after this (roughly 6 steps) [09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7] printk: add kthread console printers determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9e2b88a3e33fc5b8ba95383c2438eeefb751276d13d6bad52f2e6d1ed3cf731c all runs: OK false negative chance: 0.000 # git bisect bad 09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7 Bisecting: 2 revisions left to test after this (roughly 2 steps) [03a749e628fdbc665d7f9712637f880a79da8b78] printk: move buffer definitions into console_emit_next_record() caller determine whether the revision contains the guilty commit revision 88db8458086b1dcf20b56682504bdb34d2bca0e2 crashed and is reachable testing commit 03a749e628fdbc665d7f9712637f880a79da8b78 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1e0fe1f074ced1cb3a85ab90769575d2454e0aade05285f13ee8aed4300a678f all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 03a749e628fdbc665d7f9712637f880a79da8b78 Bisecting: 0 revisions left to test after this (roughly 1 step) [2bb2b7b57f81255c13f4395ea911d6bdc70c9fe2] printk: add functions to prefer direct printing determine whether the revision contains the guilty commit revision 03a749e628fdbc665d7f9712637f880a79da8b78 crashed and is reachable testing commit 2bb2b7b57f81255c13f4395ea911d6bdc70c9fe2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 275b223ae24469564bf5ba4863f6edd4c81b4b0004776c5bca690a971d5380da all runs: crashed: possible deadlock in console_lock_spinning_enable representative crash: possible deadlock in console_lock_spinning_enable, types: [LOCKDEP] # git bisect good 2bb2b7b57f81255c13f4395ea911d6bdc70c9fe2 09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7 is the first bad commit commit 09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7 Author: John Ogness Date: Thu Apr 21 23:28:48 2022 +0206 printk: add kthread console printers Create a kthread for each console to perform console printing. During normal operation (@system_state == SYSTEM_RUNNING), the kthread printers are responsible for all printing on their respective consoles. During non-normal operation, console printing is done as it has been: within the context of the printk caller or within irqwork triggered by the printk caller, referred to as direct printing. Since threaded console printers are responsible for all printing during normal operation, this also includes messages generated via deferred printk calls. If direct printing is in effect during a deferred printk call, the queued irqwork will perform the direct printing. To make it clear that this is the only time that the irqwork will perform direct printing, rename the flag PRINTK_PENDING_OUTPUT to PRINTK_PENDING_DIRECT_OUTPUT. Threaded console printers synchronize against each other and against console lockers by taking the console lock for each message that is printed. Note that the kthread printers do not care about direct printing. They will always try to print if new records are available. They can be blocked by direct printing, but will be woken again once direct printing is finished. Console unregistration is a bit tricky because the associated kthread printer cannot be stopped while the console lock is held. A policy is implemented that states: whichever task clears con->thread (under the console lock) is responsible for stopping the kthread. unregister_console() will clear con->thread while the console lock is held and then stop the kthread after releasing the console lock. For consoles that have implemented the exit() callback, the kthread is stopped before exit() is called. Signed-off-by: John Ogness Reviewed-by: Petr Mladek Signed-off-by: Petr Mladek Link: https://lore.kernel.org/r/20220421212250.565456-14-john.ogness@linutronix.de include/linux/console.h | 2 + kernel/printk/printk.c | 329 ++++++++++++++++++++++++++++++++++++++++++++---- 2 files changed, 309 insertions(+), 22 deletions(-) accumulated error probability: 0.00 culprit signature: 9e2b88a3e33fc5b8ba95383c2438eeefb751276d13d6bad52f2e6d1ed3cf731c parent signature: 275b223ae24469564bf5ba4863f6edd4c81b4b0004776c5bca690a971d5380da revisions tested: 33, total time: 3h46m32.102453911s (build: 55m55.431696196s, test: 2h35m32.634796154s) first good commit: 09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7 printk: add kthread console printers recipients (to): ["john.ogness@linutronix.de" "pmladek@suse.com"] recipients (cc): []