On Sat, 25 Apr 2020 22:16:40 -0400 Michael Shell <[email protected]> wrote:
> On Sun, 26 Apr 2020 00:33:42 +0200 > Stephen Berman <[email protected]> wrote: > >> kernel/sched/core.c >> kernel/workqueue.c >> kernel/workqueue_internal.h >> 3 files changed, 48 insertions(+), 99 deletions(-) > > > Interesting. A search revealed that a kernel automated test robot flagged > a bug in that commit: > > https://lore.kernel.org/lkml/20200327074308.GY11705@shao2-debian/ > > which resulted in this discussion: > > https://lore.kernel.org/lkml/[email protected]/ > > about a race condition. > > The end result was this patch: > > https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=62849a9612924a655c67cf6962920544aa5c20db > > However, I *think* that it is only about an erroneous > warning message. I could cleanly apply this patch to the latest stable kernel source I have, 5.6.4, but after rebuilding it with that patch, booting the patched kernel and running the same tests as during the bisection, the machine still did not power off normally. > With regard to the problematic commit that bisection revealed > to you: > > https://lore.kernel.org/patchwork/patch/1050496/ > > Can you try with a very recent kernel package, and then revert > just that commit (manually, in an otherwise stock kernel tree, > using the -R option with patch) Does the problem go away? As noted in my reply to Ken, I couldn't cleanly revert the commit in recent mainline or stable kernel sources. > If so, it would certainly confirm there is an issue with > that commit. And given the discussion among the developers > about what is what, it seems it is very easy to make a > mistake or oversight in that code. > > As to why it only happens to you, maybe a certain combination > of config options is needed to trigger the problem. Ah, that seems plausible. Thanks for the pointers and suggestions. Steve Berman -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
