Bug 1400930 - RT kernel panics with dm-multipath enabled
RT kernel panics with dm-multipath enabled
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: kernel-rt (Show other bugs)
Unspecified Unspecified
high Severity unspecified
: rc
: ---
Assigned To: Clark Williams
Lin Li
: ZStream
Depends On: 1389215
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Reported: 2016-12-02 05:44 EST by Marcel Kolaja
Modified: 2017-01-17 13:25 EST (History)
13 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Previously, the device mapper (DM) subsystem was not notified that the real-time kernel changes the way preemption works with spinlocks. This caused a kernel panic when the dm-multipath kernel module was loaded because the interrupt request (IRQ) check was invalid on the real-time kernel. This check has been corrected enabling the system to boot correctly with the dm-multipath module enabled.
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Clone Of: 1389215
Last Closed: 2017-01-17 13:25:55 EST
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Regression: ---
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Marcel Kolaja 2016-12-02 05:44:31 EST
This bug has been copied from bug #1389215 and has been proposed
to be backported to 7.3 z-stream (EUS).
Comment 3 Clark Williams 2016-12-13 15:08:43 EST
commit b984063401e0eddbc2c6fc0daf6a5257f7e4cba4 added to RT 7.3.z tree (cherry-picked from upstream commit: fef016306919048a4db85c43aad09593efb3af4b) and is in kernel-rt-3.10.0-514.5.1.rt56.el7 and higher.
Comment 8 errata-xmlrpc 2017-01-17 13:25:55 EST
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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