Bug 683443

Summary: kernel panic in pg_init_done - pgpath already deleted [rhel-5.6.z]
Product: Red Hat Enterprise Linux 5 Reporter: RHEL Program Management <pm-rhel>
Component: kernelAssignee: Jiri Pirko <jpirko>
Status: CLOSED ERRATA QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 5.5CC: babu.moger, bdonahue, dhoward, dwa, hang_shi, lvm-team, martinez, Menny_Hamburger, msnitzer, pm-eus, rkhan
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: kernel-2.6.18-238.9.1.el5 Doc Type: Bug Fix
Doc Text:
A race could occur when an internal multipath structure (pgpath) was freed before it was used to signal the path group initialization was complete (via pg_init_done). This update includes a number of fixes that address this issue. multipath is now increasingly robust when multipathd restarts are combined with I/O operations to multipath devices and storage failures.
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-04-12 18:20:47 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 673058    
Bug Blocks:    

Description RHEL Program Management 2011-03-09 12:29:15 UTC
This bug has been copied from bug #673058 and has been proposed
to be backported to 5.6 z-stream (EUS).

Comment 3 Jiri Pirko 2011-03-19 07:39:28 UTC
in kernel-2.6.18-238.9.1.el5

linux-2.6-md-dm-mpath-fix-null-deref-when-path-parameter-missing.patch
linux-2.6-md-dm-mpath-wait-for-pg_init-completion-on-suspend.patch
linux-2.6-md-dm-mpath-hold-io-until-all-pg_inits-completed.patch
linux-2.6-md-dm-mpath-skip-activate_path-for-failed-paths.patch
linux-2.6-md-dm-mpath-pass-struct-pgpath-to-pg-init-done.patch
linux-2.6-md-dm-mpath-prevent-io-from-work-queue-while-suspended.patch
linux-2.6-md-dm-mpath-add-mutex-to-sync-adding-and-flushing-work.patch
linux-2.6-md-dm-mpath-flush-workqueues-before-suspend-completes.patch

Comment 6 errata-xmlrpc 2011-04-12 18:20:47 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0429.html

Comment 7 Martin Prpič 2011-04-14 10:31:06 UTC
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
A race could occur when an internal multipath structure (pgpath) was freed before it was used to signal the path group initialization was complete (via pg_init_done). This update includes a number of fixes that address this issue. multipath is now increasingly robust when multipathd restarts are combined with I/O operations to multipath devices and storage failures.