From: "Luck, Tony" <tony.luck@intel.com>
To: Borislav Petkov <bp@alien8.de>, Andi Kleen <ak@linux.intel.com>
Cc: Jeremy Cline <jcline@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
"x86@kernel.org" <x86@kernel.org>,
"linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Laura Abbott <labbott@redhat.com>
Subject: x86/mce: suspicious RCU usage in 4.13.4
Date: Wed, 11 Oct 2017 21:34:22 +0000 [thread overview]
Message-ID: <3908561D78D1C84285E8C5FCA982C28F770038E5@ORSMSX114.amr.corp.intel.com> (raw)
> here's a second attempt at a more rigorous simplification: RCU stuff is
> gone and only a single loop scans through the elements.
The dev_mce_log() changes look good now.
You can apply the axe to more bits of mce_chrdev_read() though. Like that
while (!m->finished) {
we hold the mutex, the writer of that holds the mutex ... the spin loop is going to always
time out.
-Tony
next reply other threads:[~2017-10-11 21:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-11 21:34 Luck, Tony [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-11-01 20:07 x86/mce: suspicious RCU usage in 4.13.4 Luck, Tony
2017-11-01 16:47 Borislav Petkov
2017-11-01 14:56 Laura Abbott
2017-10-16 18:28 Luck, Tony
2017-10-15 9:40 Borislav Petkov
2017-10-12 22:13 Andi Kleen
2017-10-12 9:02 Borislav Petkov
2017-10-11 23:11 Andi Kleen
2017-10-11 11:50 Borislav Petkov
2017-10-10 20:13 Andi Kleen
2017-10-10 20:08 Luck, Tony
2017-10-10 19:44 Borislav Petkov
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