[Bug 736268] New: Kernel shutdown may hang due to nmi watchdog
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c0 Summary: Kernel shutdown may hang due to nmi watchdog Classification: openSUSE Product: openSUSE 12.1 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: adrian@suse.com QAContact: qa@suse.de CC: brogers@suse.com, agraf@suse.com, afaerber@suse.com Found By: --- Blocker: --- We observe a significant higher number of build failures in OBS using the 12.1 kernel due to hanging guest kernels during system shutdown invoked by "echo o
/proc/sysrq-trigger".
Thanks to Michael and Alex this got traced down to nmi watchdog, which keeps one CPU looping forever in migrate_task() function. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c Jeff Mahoney <jeffm@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jeffm@suse.com AssignedTo|kernel-maintainers@forge.pr |mgalbraith@suse.com |ovo.novell.com | -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c Mike Galbraith <mgalbraith@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c2 Mike Galbraith <mgalbraith@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |adrian@suse.com --- Comment #2 from Mike Galbraith <mgalbraith@suse.com> 2012-04-12 08:19:23 UTC --- (In reply to comment #0)
We observe a significant higher number of build failures in OBS using the 12.1 kernel due to hanging guest kernels during system shutdown invoked by "echo o
/proc/sysrq-trigger".
Thanks to Michael and Alex this got traced down to nmi watchdog, which keeps one CPU looping forever in migrate_task() function.
What I see in the crash dump is RCU stalls. I wonder if ipv6 is being used at all, because f2c31e32, which is in 3.1 introduced an rcu_read_lock() imbalance that causes RCU stalls all over the place. The fix for that, 94f826b8 is not in 3.1 kernels. That fix is currently in stable-review for 3.0, 3.3 and 3.3, but 3.1 is not receiving any more stable updates, so I'll add it myself. It'd be good to try the kernel I just pushed. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c3 --- Comment #3 from Mike Galbraith <mgalbraith@suse.com> 2012-05-01 07:56:04 UTC --- ping? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c Swamp Workflow Management <swamp@suse.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard| |obs:running:554:moderate -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c Swamp Workflow Management <swamp@suse.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|obs:running:554:moderate | -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c4 --- Comment #4 from Swamp Workflow Management <swamp@suse.de> 2012-06-22 09:09:45 UTC --- openSUSE-SU-2012:0781-1: An update that solves 7 vulnerabilities and has 23 fixes is now available. Category: security (moderate) Bug References: 700174,716996,731720,732006,735362,736268,745929,747038,747404,748463,748859,752460,754186,756840,757783,757789,758243,758260,758813,759545,759554,760077,760279,760860,760902,761681,762991,762992,765102,765320 CVE References: CVE-2009-4020,CVE-2011-3347,CVE-2012-2119,CVE-2012-2123,CVE-2012-2136,CVE-2012-2373,CVE-2012-2663 Sources used: openSUSE 12.1 (src): kernel-docs-3.1.10-1.13.2, kernel-source-3.1.10-1.13.1, kernel-syms-3.1.10-1.13.1 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c Swamp Workflow Management <swamp@suse.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard| |obs:running:583:moderate -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c Swamp Workflow Management <swamp@suse.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|obs:running:583:moderate | -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c5 --- Comment #5 from Swamp Workflow Management <swamp@suse.de> 2012-07-03 12:09:41 UTC --- openSUSE-SU-2012:0812-1: An update that solves 7 vulnerabilities and has 27 fixes is now available. Category: security (moderate) Bug References: 700174,716996,731537,731720,732006,735362,736268,745929,747038,747404,748463,748859,752460,754186,756840,757783,757789,758243,758260,758813,759545,759554,760077,760279,760860,760902,760974,761681,762991,762992,764864,765102,765320,767786 CVE References: CVE-2009-4020,CVE-2011-3347,CVE-2012-2119,CVE-2012-2123,CVE-2012-2136,CVE-2012-2373,CVE-2012-2663 Sources used: openSUSE 12.1 (src): kernel-docs-3.1.10-1.16.2, kernel-source-3.1.10-1.16.1, kernel-syms-3.1.10-1.16.1 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c6 Mike Galbraith <mgalbraith@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |CLOSED InfoProvider|adrian@suse.com | Resolution| |NORESPONSE --- Comment #6 from Mike Galbraith <mgalbraith@suse.com> 2012-07-19 06:57:42 UTC --- No response, closing. Please reopen if problems arise. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c7 --- Comment #7 from Adrian Schröter <adrian@suse.com> 2012-07-19 07:56:29 UTC --- JFYI, The hanging problem disappeared with 12.2 kernel -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=736268 https://bugzilla.novell.com/show_bug.cgi?id=736268#c8 --- Comment #8 from Mike Galbraith <mgalbraith@suse.com> 2012-07-19 08:10:42 UTC --- (In reply to comment #7)
JFYI, The hanging problem disappeared with 12.2 kernel
Great, thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
participants (1)
-
bugzilla_noreply＠novell.com