Bug 214332
Summary: | BUG: warning at kernel/cpu.c:56/unlock_cpu_hotplug() | ||
---|---|---|---|
Product: | [Fedora] Fedora | Reporter: | Shantanu Goel <sgoel01> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED NEXTRELEASE | QA Contact: | Brian Brock <bbrock> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 6 | CC: | davide.rossetti, fherrera, mgansser, parag.lkml, pix, seanos, selinux, wtogami |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2006-12-06 16:15:27 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: |
Description
Shantanu Goel
2006-11-07 02:21:22 UTC
FYI, looks like rhts hit this on ia64 as well. changing from i386 to "all". details of the panic on olympia1 via rhts: http://rhts.lab.boston.redhat.com/cgi-bin/rhts/test_log.cgi?id=933285 *** Bug 218178 has been marked as a duplicate of this bug. *** I got a couple of these in a raw in less than 24 hours. I'm rebooting now.
>uname -a
Linux hokusai 2.6.18-1.2849.fc6 #1 SMP Fri Nov 10 12:34:46 EST 2006 x86_64
x86_64 x86_64 GNU/Linux
Intel(R) Pentium(R) D CPU 3.00GHz
BUG: warning at kernel/cpu.c:56/unlock_cpu_hotplug() (Tainted: P )
Call Trace:
[<ffffffff802691bd>] show_trace+0x34/0x47
[<ffffffff802691e2>] dump_stack+0x12/0x17
[<ffffffff802a04ea>] unlock_cpu_hotplug+0x47/0x74
[<ffffffff883702aa>] :cpufreq_ondemand:do_dbs_timer+0x11c/0x174
[<ffffffff8024be61>] run_workqueue+0x9a/0xed
[<ffffffff80248848>] worker_thread+0xf0/0x122
[<ffffffff80232872>] kthread+0xf6/0x12a
[<ffffffff8025cda5>] child_rip+0xa/0x11
DWARF2 unwinder stuck at child_rip+0xa/0x11
Leftover inexact backtrace:
[<ffffffff8029b9e8>] keventd_create_kthread+0x0/0x66
[<ffffffff8023277c>] kthread+0x0/0x12a
[<ffffffff8025cd9b>] child_rip+0x0/0x11
This is possibly related to bug 215274 Known issue, sorry for the cut-and-paste: Posted the following patch to lhcs-devel (cut-and-paste): --- linux-2.6.18.ia64-orig/kernel/cpu.c.orig 2006-10-31 10:57:37.000000000 -0500 +++ linux-2.6.18.ia64/kernel/cpu.c 2006-10-31 10:57:46.000000000 -0500 @@ -58,8 +58,8 @@ void unlock_cpu_hotplug(void) recursive_depth--; return; } - mutex_unlock(&cpu_bitmask_lock); recursive = NULL; + mutex_unlock(&cpu_bitmask_lock); } EXPORT_SYMBOL_GPL(unlock_cpu_hotplug); --- For some reason this hasn't made it into the kernel. I'll ping akpm about it. P. Fixed in 2.6.19. Will be in next release. P. *** Bug 220702 has been marked as a duplicate of this bug. *** *** Bug 207916 has been marked as a duplicate of this bug. *** *** Bug 220830 has been marked as a duplicate of this bug. *** I can still see this bug with 2.6.18-1.2869.fc6 #1 SMP: Jan 15 03:34:35 localhost kernel: BUG: warning at kernel/cpu.c:56/unlock_cpu_hotplug() (Not tainted) Jan 15 03:34:35 localhost kernel: [<c04051db>] dump_trace+0x69/0x1af Jan 15 03:34:35 localhost kernel: [<c0405339>] show_trace_log_lvl+0x18/0x2c Jan 15 03:34:35 localhost kernel: [<c04058ed>] show_trace+0xf/0x11 Jan 15 03:34:35 localhost kernel: [<c04059ea>] dump_stack+0x15/0x17 Jan 15 03:34:35 localhost kernel: [<c043c25c>] unlock_cpu_hotplug+0x46/0x6f Jan 15 03:34:35 localhost kernel: [<f8a682a7>] do_dbs_timer+0x127/0x16b [cpufreq_ondemand] Jan 15 03:34:35 localhost kernel: [<c0433c18>] run_workqueue+0x83/0xc5 Jan 15 03:34:35 localhost kernel: [<c0434508>] worker_thread+0xd9/0x10d Jan 15 03:34:35 localhost kernel: [<c04369db>] kthread+0xc0/0xed Jan 15 03:34:35 localhost kernel: [<c0404dab>] kernel_thread_helper+0x7/0x10 Jan 15 03:34:35 localhost kernel: DWARF2 unwinder stuck at kernel_thread_helper+0x7/0x10 It happened 8 times, but last one was fatal (lot of hard drive activity, computer became non-responsive). Occurred in RHEL 5 beta 2 also. Linux badger.red-hat.eu 2.6.18-1.2747.el5 #1 SMP Thu Nov 9 18:55:30 EST 2006 i686 athlon i386 GNU/Linux Dual Opteron 246, 2Ghz |