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[Bug uprobes/10185] stap uprobe script on rawhide causes system crash
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 27 May 2009 20:12:55 -0000
- Subject: [Bug uprobes/10185] stap uprobe script on rawhide causes system crash
- References: <20090522092834.10185.ananth@in.ibm.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From fche at redhat dot com 2009-05-27 20:12 -------
The uprobes2 code in question reads thusly:
static void uprobe_free_task(struct uprobe_task *utask, bool in_callback)
{
[...]
if (utask->engine && (utask->tsk != current || !in_callback)) {
/*
* No other tasks in this process should be running
* uprobe_report_* callbacks. (If they are, utrace_barrier()
* here could deadlock.)
*/
int result = utrace_control_pid(utask->pid, utask->engine,
UTRACE_DETACH);
BUG_ON(result == -EINPROGRESS);
}
[...]
--
http://sourceware.org/bugzilla/show_bug.cgi?id=10185
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