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[Bug runtime/21726] on rawhide, the backtrace.exp test case causes a kernel panic
- From: "dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Fri, 14 Jul 2017 14:15:40 +0000
- Subject: [Bug runtime/21726] on rawhide, the backtrace.exp test case causes a kernel panic
- Auto-submitted: auto-generated
- References: <bug-21726-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=21726
--- Comment #5 from David Smith <dsmith at redhat dot com> ---
Commit 109e4e7 adds a workaround that avoids the kernel panic (by not calling
access_ok() in hard IRQ context).
For a longer term fix, we should remove uses of access_ok() in favor of our
uderef() / kderef() macros. There are other access_ok() uses in
runtime/linux/addr-map.c and tapset/linux/nfs.stp. These should all be replaced
if possible.
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