This was reported by one of my users and it shows on every boot for them. I wanted to know if this was a known issue before filing a bug report. Pausing... Pausing... Pausing... Pausing... <3>BUG: soft lockup detected on CPU#0! Pid: 1, comm: init EIP: 0061:[<c0106b0d>] CPU: 0 EIP is at delay_tsc+0xd/0x15 EFLAGS: 00000297 Not tainted (2.6.16-xen #2) EAX: 51d9f61d EBX: 0022d869 ECX: 51cc64c4 EDX: 00000101 ESI: 00000002 EDI: c010eeb0 EBP: bf955008 DS: 007b ES: 007b CR0: 8005003b CR2: b7f17e57 CR3: 07903000 CR4: 00000660 [<c010efb2>] do_fixup_4gb_segment+0x102/0x128 [<c0110a18>] do_page_fault+0x1c5/0x7dd [<c01049d3>] error_code+0x2b/0x30 Pausing... Continuing... Host info.. xen_major : 3 xen_minor : 0 xen_extra : .2-1 xen_caps : xen-3.0-x86_32p platform_params : virt_start=0xf5800000 xen_changeset : Tue Apr 11 22:14:24 2006 +0100 9612:1f2520faecda _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> This was reported by one of my users and it shows on every boot for > them. I wanted to know if this was a known issue before filing a bug > report.I''ve never seen this. It looks fairly harmless, but worth understanding. Please can you post a full boot log, state what distro is being used in the domU, and whether tls has been disabled or whether ''echo "hwcap 0 nosegneg" > /etc/ld.so.conf.d/xen'' has been executed. Thanks, Ian> Pausing... Pausing... Pausing... Pausing... <3>BUG: soft > lockup detected > on CPU#0! > > Pid: 1, comm: init > EIP: 0061:[<c0106b0d>] CPU: 0 > EIP is at delay_tsc+0xd/0x15 > EFLAGS: 00000297 Not tainted (2.6.16-xen #2) > EAX: 51d9f61d EBX: 0022d869 ECX: 51cc64c4 EDX: 00000101 > ESI: 00000002 EDI: c010eeb0 EBP: bf955008 DS: 007b ES: 007b > CR0: 8005003b CR2: b7f17e57 CR3: 07903000 CR4: 00000660 > [<c010efb2>] do_fixup_4gb_segment+0x102/0x128 > [<c0110a18>] do_page_fault+0x1c5/0x7dd > [<c01049d3>] error_code+0x2b/0x30 > Pausing... Continuing... > > > Host info.. > > xen_major : 3 > xen_minor : 0 > xen_extra : .2-1 > xen_caps : xen-3.0-x86_32p > platform_params : virt_start=0xf5800000 > xen_changeset : Tue Apr 11 22:14:24 2006 +0100 > 9612:1f2520faecda > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> > This was reported by one of my users and it shows on every boot for > > them. I wanted to know if this was a known issue before filing a bug > > report. > > I''ve never seen this. It looks fairly harmless, but worth understanding. > > Please can you post a full boot log, state what distro is being used in > the domU, and whether tls has been disabled or whether ''echo "hwcap 0 > nosegneg" > /etc/ld.so.conf.d/xen'' has been executed.There''s a 5-second pause the first time negative segment offsets are used, to provide a clear warning to the user. The softlockup watchdog is supposed to kick in after 10 seconds, so something here is a bit confused. It''s probably that mdelay() is delaying more than a second. It''s a software delay loop which we really ought to replace with something better (HYPERVISOR_poll is the obvious candidate). The issue can be worked around by calling touch_softlockup_watchdog() in the 5-second delay loop in arch/i386/kernel/fixup.c. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Keir Fraser wrote:> > There''s a 5-second pause the first time negative segment offsets are > used, to provide a clear warning to the user. The softlockup watchdog > is supposed to kick in after 10 seconds, so something here is a bit > confused. It''s probably that mdelay() is delaying more than a > second. It''s a software delay loop which we really ought to replace > with something better (HYPERVISOR_poll is the obvious candidate). > > The issue can be worked around by calling touch_softlockup_watchdog() > in the 5-second delay loop in arch/i386/kernel/fixup.c. >Thanks for the quick fix Keir! _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
There''s already a bug for a similar issue:
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=543
--
Regards,
David F Barrera
Linux Technology Center
Systems and Technology Group, IBM
"The wisest men follow their own direction. "
Euripides
Matt Ayres wrote:
> This was reported by one of my users and it shows on every boot for
> them. I wanted to know if this was a known issue before filing a bug
> report.
>
> Pausing... Pausing... Pausing... Pausing... <3>BUG: soft lockup
> detected on CPU#0!
>
> Pid: 1, comm: init
> EIP: 0061:[<c0106b0d>] CPU: 0
> EIP is at delay_tsc+0xd/0x15
> EFLAGS: 00000297 Not tainted (2.6.16-xen #2)
> EAX: 51d9f61d EBX: 0022d869 ECX: 51cc64c4 EDX: 00000101
> ESI: 00000002 EDI: c010eeb0 EBP: bf955008 DS: 007b ES: 007b
> CR0: 8005003b CR2: b7f17e57 CR3: 07903000 CR4: 00000660
> [<c010efb2>] do_fixup_4gb_segment+0x102/0x128
> [<c0110a18>] do_page_fault+0x1c5/0x7dd
> [<c01049d3>] error_code+0x2b/0x30
> Pausing... Continuing...
>
>
> Host info..
>
> xen_major : 3
> xen_minor : 0
> xen_extra : .2-1
> xen_caps : xen-3.0-x86_32p
> platform_params : virt_start=0xf5800000
> xen_changeset : Tue Apr 11 22:14:24 2006 +0100 9612:1f2520faecda
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
David F. Barrera wrote:> There''s already a bug for a similar issue: > > http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=543 >Keir has already committed a fix for it. # HG changeset patch # User kaf24@firebug.cl.cam.ac.uk # Node ID 1eec4d22bd8f5aba974cfb60325da95d826dc9e0 # Parent 765250390f84c7439d679ffadd07c9454baff778 Touch softlockup watchdog while warning user about use of tls libraries. Signed-off-by: Keir Fraser <keir@xensource.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel