From: He Kuang <hekuang@huawei.com>
To: <a.p.zijlstra@chello.nl>, <paulus@samba.org>, <mingo@redhat.com>,
<acme@kernel.org>, <ericvh@gmail.com>, <rminnich@sandia.gov>,
<lucho@ionkov.net>
Cc: <wangnan0@huawei.com>, <linux-kernel@vger.kernel.org>
Subject: [BUG] uprobe: failed to work on 9pfs
Date: Fri, 6 Mar 2015 13:18:47 +0800 [thread overview]
Message-ID: <54F938B7.20700@huawei.com> (raw)
Uprobe uses inode address to index all registered uprobes in a
rb_tree, this works well in most filesystems but failed on 9pfs.
9pfs allocate more than one vfs inode to the same file, the inode
address when we create uprobe is not same as the inode address we
run later. As a result, neither perf record nor events/uprobe can
capture the predefined uprobe events.
next reply other threads:[~2015-03-06 5:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-06 5:18 He Kuang [this message]
2015-03-06 8:50 ` [BUG] uprobe: failed to work on 9pfs Peter Zijlstra
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