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SubjectRe: frequent lockups in 3.18rc4
On Tue, 2 Dec 2014 14:10:33 -0800
Linus Torvalds <torvalds@linux-foundation.org> wrote:

> There's 13k+ commits in between 3.16 and 3.17, so a full bisect should
> be around 15 test-points. But judging by the timing of your emails,
> you can generally reproduce this relatively quickly..

Ok Linus and Paul, it took me almost 5 hours to bisect it and
the result is:

c9b88e9581828bb8bba06c5e7ee8ed1761172b6e is the first bad commit

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9b88e9581828bb8bba06c5e7ee8ed1761172b6e

I hope I didn't get any false positive/negative during
bisect.

And here's the complete bisect log (just in case):

git bisect start
# good: [19583ca584d6f574384e17fe7613dfaeadcdc4a6] Linux 3.16
git bisect good 19583ca584d6f574384e17fe7613dfaeadcdc4a6
# bad: [bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9] Linux 3.17
git bisect bad bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9
# bad: [f2d7e4d4398092d14fb039cb4d38e502d3f019ee] checkpatch: add fix_insert_line and fix_delete_line helpers
git bisect bad f2d7e4d4398092d14fb039cb4d38e502d3f019ee
# bad: [79eb238c76782a59d51adf8a3dd7f6444245b475] Merge tag 'tty-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect bad 79eb238c76782a59d51adf8a3dd7f6444245b475
# good: [3d582487beb83d650fbd25cb65688b0fbedc97f1] staging: vt6656: struct vnt_private pInterruptURB rename to interrupt_urb
git bisect good 3d582487beb83d650fbd25cb65688b0fbedc97f1
# bad: [e9c9eecabaa898ff3fedd98813ee4ac1a00d006a] Merge branch 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad e9c9eecabaa898ff3fedd98813ee4ac1a00d006a
# bad: [c9b88e9581828bb8bba06c5e7ee8ed1761172b6e] Merge tag 'trace-3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
git bisect bad c9b88e9581828bb8bba06c5e7ee8ed1761172b6e
# good: [47dfe4037e37b2843055ea3feccf1c335ea23a9c] Merge branch 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
git bisect good 47dfe4037e37b2843055ea3feccf1c335ea23a9c
# good: [b11a6face1b6d5518319f797a74e22bb4309daa9] clk: Add missing of_clk_set_defaults export
git bisect good b11a6face1b6d5518319f797a74e22bb4309daa9
# good: [3a636388bae8390d23f31e061c0c6fdc14525786] tracing: Remove function_trace_stop and HAVE_FUNCTION_TRACE_MCOUNT_TEST
git bisect good 3a636388bae8390d23f31e061c0c6fdc14525786
# good: [e17acfdc83b877794c119fac4627e80510ea3c09] Merge branch 'for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
git bisect good e17acfdc83b877794c119fac4627e80510ea3c09
# good: [c7ed326fa7cafb83ced5a8b02517a61672fe9e90] Merge tag 'ktest-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
git bisect good c7ed326fa7cafb83ced5a8b02517a61672fe9e90
# good: [dc6f03f26f570104a2bb03f9d1deb588026d7c75] ftrace: Add warning if tramp hash does not match nr_trampolines
git bisect good dc6f03f26f570104a2bb03f9d1deb588026d7c75
# good: [ede392a75090aab49b01ecd6f7694bb9130ad461] tracing/uprobes: Kill the dead TRACE_EVENT_FL_USE_CALL_FILTER logic
git bisect good ede392a75090aab49b01ecd6f7694bb9130ad461
# good: [bb9ef1cb7d8668d6b0038b6f9f783c849135e40d] tracing: Change apply_subsystem_event_filter() paths to check file->system == dir
git bisect good bb9ef1cb7d8668d6b0038b6f9f783c849135e40d
# good: [6355d54438bfc3b636cb6453cd091f782fb9b4d7] tracing: Kill "filter_string" arg of replace_preds()
git bisect good 6355d54438bfc3b636cb6453cd091f782fb9b4d7
# good: [b8c0aa46b3e86083721b57ed2eec6bd2c29ebfba] Merge tag 'trace-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
git bisect good b8c0aa46b3e86083721b57ed2eec6bd2c29ebfba
# first bad commit: [c9b88e9581828bb8bba06c5e7ee8ed1761172b6e] Merge tag 'trace-3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

--
Linux 3.16.0-00409-gb8c0aa4: Shuffling Zombie Juror
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