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Re: [Xen-devel] Weird bug: system instability after cat /proc/kcore
| To: | Michael Marineau <mike@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Weird bug: system instability after cat /proc/kcore |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Thu, 04 Oct 2007 07:23:36 +0100 |
| Delivery-date: | Wed, 03 Oct 2007 23:19:18 -0700 |
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| Thread-topic: | [Xen-devel] Weird bug: system instability after cat /proc/kcore |
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So the crashes you have been seeing only occur after accessing /proc/kcore? -- Keir On 4/10/07 00:03, "Michael Marineau" <mike@xxxxxxxxxxxx> wrote: > Ok, the existence of this bug just blew my mind. It appears that after > coppying /proc/kcore to disk the system starts to behave strangely. > Processes start to sometimes segfault randomly or die with a glibc > double free error. The system is perfectly fine prior to catting > /proc/kcore. I can reproduce this problem on the 2.6.18 kernel from > xen 3.1.0 and 3.1.1-rc2. To trigger it I just have to run 'cat > /proc/kcore >coredump' and then start hitting the system with > something like a gdb compile. I usually see a segfault or some > strange failure before the compile finishes. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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