bisecting fixing commit since 270b77a0f30e7bc61a9081b86d74dbb62fa6a69d
building syzkaller on ecb386fe6f6849c451955e16556d04b388b1fde1
testing commit 270b77a0f30e7bc61a9081b86d74dbb62fa6a69d with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in flush_workqueue
run #1: crashed: possible deadlock in __generic_file_fsync
run #2: crashed: possible deadlock in flush_workqueue
run #3: crashed: possible deadlock in __generic_file_fsync
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing current HEAD d45331b00ddb179e291766617259261c112db872
testing commit d45331b00ddb179e291766617259261c112db872 with gcc (GCC) 8.1.0
all runs: OK
# git bisect start d45331b00ddb179e291766617259261c112db872 270b77a0f30e7bc61a9081b86d74dbb62fa6a69d
Bisecting: 36836 revisions left to test after this (roughly 15 steps)
[b5dd0c658c31b469ccff1b637e5124851e7a4a1c] Merge branch 'akpm' (patches from Andrew)
testing commit b5dd0c658c31b469ccff1b637e5124851e7a4a1c with gcc (GCC) 8.1.0
all runs: OK
# git bisect bad b5dd0c658c31b469ccff1b637e5124851e7a4a1c
Bisecting: 18024 revisions left to test after this (roughly 14 steps)
[30807ef2b76e01ea209fcad66a87e534ed1edb40] Merge tag 'microblaze-v5.0-rc1' of git://git.monstr.eu/linux-2.6-microblaze
testing commit 30807ef2b76e01ea209fcad66a87e534ed1edb40 with gcc (GCC) 8.1.0
run #0: crashed: WARNING: possible circular locking dependency detected
run #1: crashed: possible deadlock in __generic_file_fsync
run #2: crashed: WARNING: locking bug in corrupted
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good 30807ef2b76e01ea209fcad66a87e534ed1edb40
Bisecting: 9012 revisions left to test after this (roughly 13 steps)
[5be99560c6a0c24b7a0cc3bb4f26051c92cdff2a] selftests/txtimestamp: Fix an equals vs assign bug
testing commit 5be99560c6a0c24b7a0cc3bb4f26051c92cdff2a with gcc (GCC) 8.1.0
all runs: OK
# git bisect bad 5be99560c6a0c24b7a0cc3bb4f26051c92cdff2a
Bisecting: 4480 revisions left to test after this (roughly 12 steps)
[00d59fde8532b2d42e80909d2e58678755e04da9] Merge tag 'mmc-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
testing commit 00d59fde8532b2d42e80909d2e58678755e04da9 with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in __generic_file_fsync
run #1: crashed: possible deadlock in __generic_file_fsync
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good 00d59fde8532b2d42e80909d2e58678755e04da9
Bisecting: 2533 revisions left to test after this (roughly 11 steps)
[d36377c6eb071e3d0751e9e0e3c19198c58d9a5d] Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
testing commit d36377c6eb071e3d0751e9e0e3c19198c58d9a5d with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in __generic_file_fsync
run #1: crashed: WARNING: locking bug in corrupted
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good d36377c6eb071e3d0751e9e0e3c19198c58d9a5d
Bisecting: 1266 revisions left to test after this (roughly 10 steps)
[e45428a436765fcd154d461a2739b5640916dc00] Merge tag 'nfsd-4.21' of git://linux-nfs.org/~bfields/linux
testing commit e45428a436765fcd154d461a2739b5640916dc00 with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in __generic_file_fsync
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
# git bisect good e45428a436765fcd154d461a2739b5640916dc00
Bisecting: 621 revisions left to test after this (roughly 9 steps)
[7671c14e6aca7a816a29a85eba47d9bccb7d23ae] Merge branch 'i2c/for-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
testing commit 7671c14e6aca7a816a29a85eba47d9bccb7d23ae with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in flush_workqueue
run #1: crashed: possible deadlock in __generic_file_fsync
run #2: crashed: WARNING: possible circular locking dependency detected
run #3: crashed: possible deadlock in flush_workqueue
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good 7671c14e6aca7a816a29a85eba47d9bccb7d23ae
Bisecting: 330 revisions left to test after this (roughly 8 steps)
[e8af37f3f488e7adce2b5c6f6dfe8c83c2662e1f] Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
testing commit e8af37f3f488e7adce2b5c6f6dfe8c83c2662e1f with gcc (GCC) 8.1.0
all runs: OK
# git bisect bad e8af37f3f488e7adce2b5c6f6dfe8c83c2662e1f
Bisecting: 130 revisions left to test after this (roughly 7 steps)
[ac5eed2b41776b05cf03aac761d3bb5e64eea24c] Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
testing commit ac5eed2b41776b05cf03aac761d3bb5e64eea24c with gcc (GCC) 8.1.0
all runs: OK
# git bisect bad ac5eed2b41776b05cf03aac761d3bb5e64eea24c
Bisecting: 78 revisions left to test after this (roughly 6 steps)
[0fe4e2d5cd931ad2ff99d61cfdd5c6dc0c3ec60b] Merge tag 'drm-next-2019-01-05' of git://anongit.freedesktop.org/drm/drm
testing commit 0fe4e2d5cd931ad2ff99d61cfdd5c6dc0c3ec60b with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in __generic_file_fsync
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
# git bisect good 0fe4e2d5cd931ad2ff99d61cfdd5c6dc0c3ec60b
Bisecting: 41 revisions left to test after this (roughly 5 steps)
[e2b745f469ec0f3165ba5ffaee3ce40f98d77878] Merge tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping
testing commit e2b745f469ec0f3165ba5ffaee3ce40f98d77878 with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in __generic_file_fsync
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
# git bisect good e2b745f469ec0f3165ba5ffaee3ce40f98d77878
Bisecting: 20 revisions left to test after this (roughly 4 steps)
[4ccc98a48958da9f89beb71c66a4e05468727951] tools gpio: Allow overriding CFLAGS
testing commit 4ccc98a48958da9f89beb71c66a4e05468727951 with gcc (GCC) 8.1.0
all runs: OK
# git bisect bad 4ccc98a48958da9f89beb71c66a4e05468727951
Bisecting: 10 revisions left to test after this (roughly 3 steps)
[4bcc4cff6a10e5287d4dd3e73b6b4689f9a0c570] perf trace: Store the major number for a file when storing its pathname
testing commit 4bcc4cff6a10e5287d4dd3e73b6b4689f9a0c570 with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in flush_workqueue
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
# git bisect good 4bcc4cff6a10e5287d4dd3e73b6b4689f9a0c570
Bisecting: 5 revisions left to test after this (roughly 3 steps)
[38fc9da69f3385667ba8c3d45bd43065491854a6] perf trace beauty ioctl: Beautify USBDEVFS_ commands
testing commit 38fc9da69f3385667ba8c3d45bd43065491854a6 with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in __generic_file_fsync
run #1: crashed: possible deadlock in flush_workqueue
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good 38fc9da69f3385667ba8c3d45bd43065491854a6
Bisecting: 2 revisions left to test after this (roughly 2 steps)
[f1770e3ca4ec10ce43825de2f855a1831c711195] tools power x86_energy_perf_policy: Override CFLAGS assignments and add LDFLAGS to build command
testing commit f1770e3ca4ec10ce43825de2f855a1831c711195 with gcc (GCC) 8.1.0
all runs: OK
# git bisect bad f1770e3ca4ec10ce43825de2f855a1831c711195
Bisecting: 0 revisions left to test after this (roughly 1 step)
[c4a75bb9488a9f7b3c7e79017609529d1aa5deab] perf c2c: Increase the HITM ratio limit for displayed cachelines
testing commit c4a75bb9488a9f7b3c7e79017609529d1aa5deab with gcc (GCC) 8.1.0
run #0: crashed: possible deadlock in flush_workqueue
run #1: crashed: WARNING: possible circular locking dependency detected
run #2: crashed: possible deadlock in __generic_file_fsync
run #3: crashed: WARNING: possible circular locking dependency detected
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good c4a75bb9488a9f7b3c7e79017609529d1aa5deab
f1770e3ca4ec10ce43825de2f855a1831c711195 is the first bad commit
commit f1770e3ca4ec10ce43825de2f855a1831c711195
Author: Jiri Olsa <jolsa@kernel.org>
Date:   Fri Oct 12 07:20:16 2018 -0400

    tools power x86_energy_perf_policy: Override CFLAGS assignments and add LDFLAGS to build command
    
    So user could specify outside CFLAGS/LDFLAGS values.
    
    Signed-off-by: Jiri Olsa <jolsa@kernel.org>
    Cc: Herton Krzesinski <herton@redhat.com>
    Cc: Len Brown <len.brown@intel.com>
    Link: https://lkml.kernel.org/r/20181212102537.25902-2-jolsa@kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

:040000 040000 9369f6f7c5ece34b63021b053d434a82cc75e8f4 d3f377804d5a0499422a9b093f4104b96590471e M	tools
revisions tested: 18, total time: 5h21m46.097537475s (build: 1h42m52.081963817s, test: 3h32m26.946293262s)
first good commit: f1770e3ca4ec10ce43825de2f855a1831c711195 tools power x86_energy_perf_policy: Override CFLAGS assignments and add LDFLAGS to build command
cc: ["acme@redhat.com" "herton@redhat.com" "jolsa@kernel.org" "len.brown@intel.com"]