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[Bug uprobes/10324] New: x86-64 uprobes gives up on 0xf0 prefix (lock)
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 24 Jun 2009 10:53:24 -0000
- Subject: [Bug uprobes/10324] New: x86-64 uprobes gives up on 0xf0 prefix (lock)
- Reply-to: sourceware-bugzilla at sourceware dot org
When probing multithreading libraries like libpthread, uprobes
rejects instructions like this for probing.
f0 64 0f b1 0c 25 c8 lock cmpxchg %ecx,%fs:0xc8
Jun 23 21:19:25 grid-wn353 kernel: Can't place uprobe at pid 21629 vaddr
0x2b8f90f09691: instruction type cannot be probed
--
Summary: x86-64 uprobes gives up on 0xf0 prefix (lock)
Product: systemtap
Version: unspecified
Status: NEW
Severity: enhancement
Priority: P2
Component: uprobes
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=10324
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