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[Bug kprobes/9740] syscall.* probe causes kernel panic(double fault) on rawhide kernel/i686
- From: "mhiramat at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 13 Jan 2009 23:07:12 -0000
- Subject: [Bug kprobes/9740] syscall.* probe causes kernel panic(double fault) on rawhide kernel/i686
- References: <20090113213728.9740.mhiramat@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From mhiramat at redhat dot com 2009-01-13 23:07 -------
Here, I checked unloading time on 2.6.28-mm1 on 2CPU machine.
$ time staprun -d syscall2.ko
real 0m0.340s
user 0m0.000s
sys 0m0.014s
As you can see, real took over 340ms because synchronize_sched() waits scheduler
synchronization.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=9740
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