ci2 starts bisection 2024-05-13 11:36:52.380286839 +0000 UTC m=+186389.572611514
bisecting cause commit starting from 448b3fe5a0eab5b625a7e15c67c7972169e47ff8
building syzkaller on de979bc20b2b73242b7d6fbbdf614a8cb4c574f4
ensuring issue is reproducible on original commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8

testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 18253a42346f39a06dae08d242c06d2522545b0c51b8070640933a702121a3b1
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: aa140970bbfa679aa7275647f8c6afb48b63f801dd32102ac1e263705f04d88a
run #0: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: out-of-bounds Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: out-of-bounds Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
kconfig minimization: base=3971 full=8000 leaves diff=2012
split chunks (needed=false): <2012>
split chunk #0 of len 2012 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c589c008d8a37629f4ae0f4ea5a93b56e4168956fd278ae3c1c8cdd52331fb09
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed
testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b16cd32792901163f4b9e30ece83cdd87fa96eea8f373898a7c00337a3e0e661
run #0: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #1: crashed: KASAN: out-of-bounds Read in __ext4_check_dir_entry
run #2: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #3: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #4: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #5: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #6: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #7: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #8: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
run #9: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 05dfaf654bb76e21727c43be52126c02c9f193fe2830b81fa63e3f15c4c84a68
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: fac2b05351895aa687971178fca1fa756d5d2e9b7dfeb4612c8c20caf6c4d4dc
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 448b3fe5a0eab5b625a7e15c67c7972169e47ff8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 53237eea1344df225ab086ca80722b7975311bff2519d448f5922cd7496a6abc
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
the chunk can be dropped
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
picked [v6.8 v6.7 v6.6 v6.4 v6.2 v6.0 v5.18 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 31 release tags
testing release v6.8
testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2fda3ee2f7a6ac62cb7f3e1b1cd8440f0514db45406565824615f38a8290ac1a
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.7
testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a3253dd45e924753934505690bf805964ec6c4aa973981a8ed36cfa994319037
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.6
testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5085aeefdbf42a654a73a3222b80a5bd8b4bb17a6c71f48531f847b3e9f29b72
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.4
testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3b0bc03a1d67cd7a7d8b159a83cca0b827b25bc46da6ac2c340668902cebc4f2
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.2
testing commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a8e9cb198fe0484e5710c8e1da2a88422dc46392d8802b66cda18b072d6455ce
all runs: crashed: KASAN: use-after-free Read in __ext4_check_dir_entry
representative crash: KASAN: use-after-free Read in __ext4_check_dir_entry, types: [KASAN]
testing release v6.0
testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6bf0a7417aee67cdf2fbcf9e7c50c0abfd052931b88036c1add62d89017159f2
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
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-executor3135169624" "root@10.128.15.200:./syz-executor3135169624"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.15.200, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.15.200 [10.128.15.200] port 22.
debug1: connect to address 10.128.15.200 port 22: Connection timed out
ssh: connect to host 10.128.15.200 port 22: Connection timed out
scp: Connection closed

representative crash: BUG: workqueue lockup, types: [UNKNOWN]
testing release v5.18
testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b1bcc5e787310fd318bd7144238a80d19b162de31cb3fd7fc033469816b207ed
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
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-executor763998613" "root@10.128.10.34:./syz-executor763998613"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.34, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.34 [10.128.10.34] port 22.
debug1: connect to address 10.128.10.34 port 22: Connection timed out
ssh: connect to host 10.128.10.34 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-executor25183843" "root@10.128.0.205:./syz-executor25183843"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.205, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u2, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.205 [10.128.0.205] port 22.
debug1: connect to address 10.128.0.205 port 22: Connection timed out
ssh: connect to host 10.128.0.205 port 22: Connection timed out
scp: Connection closed

representative crash: BUG: workqueue lockup, types: [UNKNOWN]
testing release v5.16
testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e0187b450f5167974eae8696b9858e7ed80f360e3de0c4e793be51b731de925c
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: ignore: SYZFATAL: executor NUM failed NUM times: executor NUM: failed to write control pipe: write |NUM: broken pipe
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: OK
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
testing release v5.13
testing commit 62fb9874f5da54fdb243003b386128037319b219 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 93135ef521e6dc2c53c331141f770cb284d296f3bf59ba7ff326e8d6cbeab3c9
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6257c4519b2ec8e4b75801ced001b26ef13c50b1370e4233c5675c942f1f5b95
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 gcc
compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1d9aec8eca1f25e23c11b97d03546f3f4d00877913bc08593e65b0d69a3eb3a1
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8776bc78780d244484fbd4ed40ca22e580156931e3e6a0ab9ded3e3deaab44a4
all runs: OK
false negative chance: 0.000
# git bisect start 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 219d54332a09e8d8741c1e1982f5eae56099de85
Bisecting: 21138 revisions left to test after this (roughly 15 steps)
[9f68e3655aae6d49d6ba05dd263f99f33c2567af] Merge tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm

testing commit 9f68e3655aae6d49d6ba05dd263f99f33c2567af gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a2a3ae3668ca97019a354afbfd5e1cd0ab02c1815cd3226612dcd7c3a8a033e8
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: BUG: workqueue lockup
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad 9f68e3655aae6d49d6ba05dd263f99f33c2567af
Bisecting: 11474 revisions left to test after this (roughly 14 steps)
[c3bed3b20e40ab44b98ac5f0471a5bd92a802f5a] Merge tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

testing commit c3bed3b20e40ab44b98ac5f0471a5bd92a802f5a gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: abcf62d320d01b06547e6dd0d825ca094e94e15038725803a26ab63aded8e44f
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad c3bed3b20e40ab44b98ac5f0471a5bd92a802f5a
Bisecting: 5689 revisions left to test after this (roughly 13 steps)
[59274c7164807d27b24e6c068dfe734f7bea4623] Merge tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

testing commit 59274c7164807d27b24e6c068dfe734f7bea4623 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3a91f2baaaca9e95bc1a4437274fb3026e98a4330c33a5ffcbf9c4bb2a881100
all runs: OK
false negative chance: 0.000
# git bisect good 59274c7164807d27b24e6c068dfe734f7bea4623
Bisecting: 2850 revisions left to test after this (roughly 12 steps)
[6d29032c2cef31633db5dfd946fbcf9190dddef0] pinctrl: Fix warning by adding missing MODULE_LICENSE

testing commit 6d29032c2cef31633db5dfd946fbcf9190dddef0 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2c96b6c9e7b6152162a7c5969fc468d91b18f8dd98bbc92939d519a06978ef7d
all runs: OK
false negative chance: 0.000
# git bisect good 6d29032c2cef31633db5dfd946fbcf9190dddef0
Bisecting: 1463 revisions left to test after this (roughly 11 steps)
[c3bfc5dd73c6f519ff0636d4e709515f06edef78] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

testing commit c3bfc5dd73c6f519ff0636d4e709515f06edef78 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 28a88729626966dbc5adfd8143570399d504ddcb1490dc45a5caa8fb994bc849
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad c3bfc5dd73c6f519ff0636d4e709515f06edef78
Bisecting: 735 revisions left to test after this (roughly 10 steps)
[ceb307474506f888e8f16dab183405ff01dffa08] Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground

testing commit ceb307474506f888e8f16dab183405ff01dffa08 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8d38bfc8a5e288df2e79573a5713e81c96f8c41ca1437fd3f0d747dc0706fae6
all runs: crashed: BUG: workqueue lockup
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad ceb307474506f888e8f16dab183405ff01dffa08
Bisecting: 325 revisions left to test after this (roughly 8 steps)
[b8072d5b3cdd596c999f6e3f312ce7e4858ca356] Merge tag 'for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

testing commit b8072d5b3cdd596c999f6e3f312ce7e4858ca356 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 95db9fc6696a0d01bd13b4d8ba24cd72642e7a275292e4ba3c6ad062973ef41c
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: BUG: workqueue lockup
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad b8072d5b3cdd596c999f6e3f312ce7e4858ca356
Bisecting: 170 revisions left to test after this (roughly 7 steps)
[f112a2fd1f5999c6029551f901952392d900cf99] Merge tag 'vfs-5.5-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

testing commit f112a2fd1f5999c6029551f901952392d900cf99 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fc1960e4c0bb34648b63aee2a0d090e016171c3599ace2e950eb8f9efc7b21cc
all runs: OK
false negative chance: 0.000
# git bisect good f112a2fd1f5999c6029551f901952392d900cf99
Bisecting: 80 revisions left to test after this (roughly 7 steps)
[8f45533e9db917147066b24903a0d03a5adb50e1] Merge tag 'f2fs-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

testing commit 8f45533e9db917147066b24903a0d03a5adb50e1 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c786f65688dbcc5868f3ab0f2a5f6a5402cde3fb71a61e524a5fb2cf32eb0cf6
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad 8f45533e9db917147066b24903a0d03a5adb50e1
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[a6d4040846bff49c7e870cee5693245f87f2cfce] Merge branch 'jk/jbd2-revoke-overflow'

testing commit a6d4040846bff49c7e870cee5693245f87f2cfce gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 88e49f0aa9e35c027f4cdab0a366e6a63671747a4cb8571784159491edcc9479
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip a6d4040846bff49c7e870cee5693245f87f2cfce
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[321238fbfb49003c66caecb1eefb5238dce27b61] ext4: Fix ext4_should_journal_data() for EA inodes

testing commit 321238fbfb49003c66caecb1eefb5238dce27b61 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7423d2ebc38a92da005074e24c837cb2415e4b051442bb819e3d52c745b048fb
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 321238fbfb49003c66caecb1eefb5238dce27b61
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[ebc11f7b1f2a016a99796b0923d9c0d7b7f9cba6] ext4: code cleanup for get_next_id

testing commit ebc11f7b1f2a016a99796b0923d9c0d7b7f9cba6 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ae40c5ca3b71db0a80c85fdd4a41a93b26f28d6fbde21fc7ad85f0ba15960bf9
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip ebc11f7b1f2a016a99796b0923d9c0d7b7f9cba6
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[f5a53edcf01eae21dc3ef1845515229e8459e5cc] f2fs: support aligned pinned file

testing commit f5a53edcf01eae21dc3ef1845515229e8459e5cc gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3641306fe1099dc94becbe8019b717c36f8bb909e4a9f36c4f5955ff56f11690
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip f5a53edcf01eae21dc3ef1845515229e8459e5cc
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[1e1a76ed9a1c090e1ac030ed73612e5fe2262f2d] ext4: remove unused variable warning in parse_options()

testing commit 1e1a76ed9a1c090e1ac030ed73612e5fe2262f2d gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 67969b5d833ed2f94cdff33c568f880bb809706701aaefe215c3df673872683f
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 1e1a76ed9a1c090e1ac030ed73612e5fe2262f2d
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[a9a8344ee1714f835ba394077e8c13d751e2f148] ext4, jbd2: Provide accessor function for handle credits

testing commit a9a8344ee1714f835ba394077e8c13d751e2f148 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d093fd8d83cb39bd98c8d351f27446200c73583be6924df1aa946376fa8ee018
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip a9a8344ee1714f835ba394077e8c13d751e2f148
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[196624e192f8e767b06924e46495c56846b2b64e] ext4: Enable encryption for subpage-sized blocks

testing commit 196624e192f8e767b06924e46495c56846b2b64e gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 67969b5d833ed2f94cdff33c568f880bb809706701aaefe215c3df673872683f
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 196624e192f8e767b06924e46495c56846b2b64e
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[c45d6002ff7a322022560e9b19ad867b01fec77f] f2fs: show f2fs instance in printk_ratelimited

testing commit c45d6002ff7a322022560e9b19ad867b01fec77f gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3641306fe1099dc94becbe8019b717c36f8bb909e4a9f36c4f5955ff56f11690
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip c45d6002ff7a322022560e9b19ad867b01fec77f
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[c7df4a1ecb8579838ec8c56b2bb6a6716e974f37] ext4: work around deleting a file with i_nlink == 0 safely

testing commit c7df4a1ecb8579838ec8c56b2bb6a6716e974f37 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 61d36bbaa34587c1369244d8dd2bdad3e05cf23b7504f7d4551c951ac08208b0
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip c7df4a1ecb8579838ec8c56b2bb6a6716e974f37
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[0d0a60c92fedbd4bf484c4c9b5cd49c16d05fb3f] Merge branch 'rh/dioread-nolock-1k' into dev

testing commit 0d0a60c92fedbd4bf484c4c9b5cd49c16d05fb3f gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 66c3aaf740b4221f0d922e4abad6587e3dfe4bd188cfcd1badc93b5150f655d0
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 0d0a60c92fedbd4bf484c4c9b5cd49c16d05fb3f
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a] ext4: add more paranoia checking in ext4_expand_extra_isize handling

testing commit 4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e467913aa43fcde53f3490407820aba4cf1bfff06ed4de8d623384a136fd97fd
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[f21bdbba0a5ac69e0a632ad974f5c0df9b7d411c] Merge branch 'iomap-for-next' into mb/dio

testing commit f21bdbba0a5ac69e0a632ad974f5c0df9b7d411c gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 62e9bd0d49a4037e4b1d3b7138a5bd2fcc56767e023e54057fbcc2e96f923ed1
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip f21bdbba0a5ac69e0a632ad974f5c0df9b7d411c
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[4d06bfb97ecb0df4f5b057a73db002e28c22c35c] ext4: Add error handling for io_end_vec struct allocation

testing commit 4d06bfb97ecb0df4f5b057a73db002e28c22c35c gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: cce95895fae542a5f3c7db512532f9a4ccd80a01a348b0e964e470776a4e4348
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 4d06bfb97ecb0df4f5b057a73db002e28c22c35c
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[a4db59ac9058207cea77df7d7893aab5c3009f87] f2fs: expose main_blkaddr in sysfs

testing commit a4db59ac9058207cea77df7d7893aab5c3009f87 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3641306fe1099dc94becbe8019b717c36f8bb909e4a9f36c4f5955ff56f11690
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip a4db59ac9058207cea77df7d7893aab5c3009f87
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[8d0d47ea1640b23678306c007ccc813b5b930af4] Merge branch 'mb/dio' into master

testing commit 8d0d47ea1640b23678306c007ccc813b5b930af4 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c93b4670114bbc96010c66d364cd4a653c4799756a49cebccc0446069f69f5bc
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 8d0d47ea1640b23678306c007ccc813b5b930af4
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[150549ed2fcf4be9bf3efedd99b72924dff26166] jbd2: Drop pointless check from jbd2_journal_stop()

testing commit 150549ed2fcf4be9bf3efedd99b72924dff26166 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e9cc956569675ce141152613092bbcde76943cc7541bf9f8cb01710b71605b4b
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 150549ed2fcf4be9bf3efedd99b72924dff26166
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[31fb992ce675ec3326dfd4db9634480391713db8] fs/buffer.c: support fscrypt in block_read_full_page()

testing commit 31fb992ce675ec3326dfd4db9634480391713db8 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d20fc226587979cf65c079d3441ff506bd69eb4cc8c3f1fd69d503fa0d80646a
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 31fb992ce675ec3326dfd4db9634480391713db8
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[5559b2d81b51de75cb7864bb1fbb82982f7e8fff] jbd2: Drop pointless wakeup from jbd2_journal_stop()

testing commit 5559b2d81b51de75cb7864bb1fbb82982f7e8fff gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 57130866c43ad85a289dd01a158ae7e66287962a012cc32e653daa32fb282151
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 5559b2d81b51de75cb7864bb1fbb82982f7e8fff
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[fe1897eaa6646f5a64a4cee0e6473ed9887d324b] f2fs: fix to update time in lazytime mode

testing commit fe1897eaa6646f5a64a4cee0e6473ed9887d324b gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3641306fe1099dc94becbe8019b717c36f8bb909e4a9f36c4f5955ff56f11690
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip fe1897eaa6646f5a64a4cee0e6473ed9887d324b
Bisecting: 50 revisions left to test after this (roughly 6 steps)
[4a55d362ffe7caf099a01f6d2ed49a6ea03a4a88] Merge tag 'afs-next-20191121' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

testing commit 4a55d362ffe7caf099a01f6d2ed49a6ea03a4a88 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c786f65688dbcc5868f3ab0f2a5f6a5402cde3fb71a61e524a5fb2cf32eb0cf6
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad 4a55d362ffe7caf099a01f6d2ed49a6ea03a4a88
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[6d69843e5d3f0c394e1e3004cc2b36efbe402b71] jbd2: Drop unnecessary branch from jbd2_journal_forget()

testing commit 6d69843e5d3f0c394e1e3004cc2b36efbe402b71 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: bf1f85684ea3276f539e2d809c4774cb31165da2b781945182b5d2d51b7b48ef
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 6d69843e5d3f0c394e1e3004cc2b36efbe402b71
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[933f1c1e0b75bbc29730eef07c9e196c6dfd37e5] jbd2: Rename h_buffer_credits to h_total_credits

testing commit 933f1c1e0b75bbc29730eef07c9e196c6dfd37e5 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 36c885ba02f7776c42002c4a666ae4d629ef98c88419bcb35814f7297c4664a8
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 933f1c1e0b75bbc29730eef07c9e196c6dfd37e5
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[2e710ff03fc4599059eeda68c8de2383e65af825] jbd2: Don't call __bforget() unnecessarily

testing commit 2e710ff03fc4599059eeda68c8de2383e65af825 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 18b1d8295d9ccf6c860404f51a2fa61a2b171cd82d19c81eee7c5d750eb0e3d8
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 2e710ff03fc4599059eeda68c8de2383e65af825
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[d090707edab59cb07047d6d7e138ffcc3bdc42be] jbd2: Make credit checking more strict

testing commit d090707edab59cb07047d6d7e138ffcc3bdc42be gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7f078d215c8d0fbbd3cb1116bd94548015f44e6b1b27cab4f62c882b6ba28198
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip d090707edab59cb07047d6d7e138ffcc3bdc42be
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[65db869c754e7c271691dd5feabf884347e694f5] ext4: Fix credit estimate for final inode freeing

testing commit 65db869c754e7c271691dd5feabf884347e694f5 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 5e988c78cd7fe776c3b8ee7b5ced1b1b5480d205db71283b9261ea496af2e18c
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 65db869c754e7c271691dd5feabf884347e694f5
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[83448bdfb59731c2f54784ed3f4a93ff95be6e7e] ext4: Reserve revoke credits for freed blocks

testing commit 83448bdfb59731c2f54784ed3f4a93ff95be6e7e gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ca855ea3247d5e07db54db7a262ab7899543a3645cc2331e74854085e22b50f6
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 83448bdfb59731c2f54784ed3f4a93ff95be6e7e
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[464170647b5648bb81f3615567485fcb9a685bed] jbd2: Make state lock a spinlock

testing commit 464170647b5648bb81f3615567485fcb9a685bed gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b8597c5b81b0dc2c14cb49ad6f33ad3eaea002ff789834b4c21bfb8ced2eb709
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 464170647b5648bb81f3615567485fcb9a685bed
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[0b9f230b94dd7457802264dc4c16921b3527dcf1] ext4: move inode extension check out from ext4_iomap_alloc()

testing commit 0b9f230b94dd7457802264dc4c16921b3527dcf1 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 13622bbd57c3b015bd80ae7ecb19659cb074cfc8befe736954d115d1f6e84de9
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 0b9f230b94dd7457802264dc4c16921b3527dcf1
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[4fe171bb81b13b40bf568330ec3716dfb304ced1] afs: Remove set but not used variable 'ret'

testing commit 4fe171bb81b13b40bf568330ec3716dfb304ced1 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ed445ea44e3aa3374708f11dcec2041921015e963359c6c7cc75929217fb9025
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 4fe171bb81b13b40bf568330ec3716dfb304ced1
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[3eaf9cc62f447a742b26fa601993e94406aa1ea1] ext4: update ext4_sync_file() to not use __generic_file_fsync()

testing commit 3eaf9cc62f447a742b26fa601993e94406aa1ea1 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f6b0b4c00681a614d4c9228a1d35cd90124679bc79a15bdad6a36560e0f5be59
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 3eaf9cc62f447a742b26fa601993e94406aa1ea1
Bisecting: 33 revisions left to test after this (roughly 5 steps)
[50b8b3f85a01543fb82d3bb9bfe7d06659522c70] Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

testing commit 50b8b3f85a01543fb82d3bb9bfe7d06659522c70 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c786f65688dbcc5868f3ab0f2a5f6a5402cde3fb71a61e524a5fb2cf32eb0cf6
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: workqueue lockup, types: [UNKNOWN]
# git bisect bad 50b8b3f85a01543fb82d3bb9bfe7d06659522c70
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[19014d697147c6aea3a34eea00a2844e698d070f] jbd2: Fine tune estimate of necessary descriptor blocks

testing commit 19014d697147c6aea3a34eea00a2844e698d070f gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8523ff519bbf20512e215d9dbcee714053b91c0a7d4d1cc2226feb4046a68f80
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 19014d697147c6aea3a34eea00a2844e698d070f
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[9797a902480521dc8e7a478e38f0c896ffff8784] ocfs2: Use accessor function for h_buffer_credits

testing commit 9797a902480521dc8e7a478e38f0c896ffff8784 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d093fd8d83cb39bd98c8d351f27446200c73583be6924df1aa946376fa8ee018
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 9797a902480521dc8e7a478e38f0c896ffff8784
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[378f32bab3714f04c4e0c3aee4129f6703805550] ext4: introduce direct I/O write using iomap infrastructure

testing commit 378f32bab3714f04c4e0c3aee4129f6703805550 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f1af8b586d75a65ee201e8ca939017434d4e6ae11a9e2ad19c163c5c46fb7a69
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 378f32bab3714f04c4e0c3aee4129f6703805550
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[015c6033068208d6227612c878877919f3fcf6b6] jbd2: Fix statistics for the number of logged blocks

testing commit 015c6033068208d6227612c878877919f3fcf6b6 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8c8b9ddd774c47cf8986077a59dbcfe4cccefc174f36d0a16772a3334415eed7
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 015c6033068208d6227612c878877919f3fcf6b6
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[0094f981bbaca3ae707c95c5e5977429d29c2dd0] jbd2: Provide trace event for handle restarts

testing commit 0094f981bbaca3ae707c95c5e5977429d29c2dd0 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4abbdc72d70a9a30d6b557172bc1c694934d1a361783d0966fcef8515c98d09e
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 0094f981bbaca3ae707c95c5e5977429d29c2dd0
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[53e5cca56795a301bbe8465781dab084f7ae8d54] ext4: reorder map.m_flags checks within ext4_iomap_begin()

testing commit 53e5cca56795a301bbe8465781dab084f7ae8d54 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4f298bc8a9d99ba500ef93bd71524727a202eab487f8b4be5b2667b7cb647de4
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip 53e5cca56795a301bbe8465781dab084f7ae8d54
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[dfdeeb41fb08fbe11d3cfefba9c0fcd00c95a36d] Merge branch 'tt/misc' into dev

testing commit dfdeeb41fb08fbe11d3cfefba9c0fcd00c95a36d gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 22c27756b0f65aa7975b80cf6d4d1367bb64cfc4a87605e7b3b15599dc489907
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
# git bisect skip dfdeeb41fb08fbe11d3cfefba9c0fcd00c95a36d
Bisecting: 25 revisions left to test after this (roughly 5 steps)
[548feebec7e93e58b647dba70b3303dcb569c914] ext4: update direct I/O read lock pattern for IOCB_NOWAIT

revisions tested: 66, total time: 12h9m25.123229861s (build: 2h32m2.256026266s, test: 9h28m2.882862015s)
error: bisection is taking too long (>12h0m0s), aborting