Messages in this thread | | | Subject | Re: [BUG] lockup with the latest kernel | From | Steven Rostedt <> | Date | Tue, 08 Sep 2009 22:29:13 -0400 |
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On Fri, 2009-08-28 at 14:33 -0400, Steven Rostedt wrote: > On Fri, 28 Aug 2009, Steven Rostedt wrote: > > On Thu, 27 Aug 2009, Linus Torvalds wrote: > > > > ... > > > > >> [13288.222084] EIP: 0060:[<c0110821>] EFLAGS: 00000002 CPU: 0 > > > > >> [13288.222084] EIP is at default_send_IPI_mask_logical+0x53/0x92 > > > > > > Is this one perhaps fixed by b04e6373d694 ("x86: don't call > > > '->send_IPI_mask()' with an empty mask") > > > > > > It sounds a _lot_ like that bug. Older dual-cpu x86 box, and APIC getting > > > confused by the occasional empty CPU mask, and then subsequent IPI's will > > > hang. > > > > I'll update my box to that kernel and see what happens and let you know. > > I checked out the commit at b04e6373d694, compiled and booted that kernel. > So far, so good. It survived logging into a gnome session (sometimes locks > up there), and a full kernel compile (usually locks up there too). But > there's been rare times that it would take days before hitting the bug. > > I'll keep it in this kernel for a while and if it lasts the week, I'll > consider it fixed. This box acts as my email, dhcp and web server, as well > as one of the boxes in my distcc farm, thus it gets a bit of use. It will > not be idle during this time period.
Just an update.
The box currently has an uptime of 11 days. I have not hit the bug at all, and it has survived numerous compiles (both locally and as a distcc server). It has been serving up my email and web pages without a hitch.
I'd say that commit fixed the bug. (knock on wood).
-- Steve
(or it could have been the penguins:
http://rostedt.homelinux.com/gallery2/main.php?g2_itemId=7860 )
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