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| author | Prashanth Nageshappa <prashanth@linux.vnet.ibm.com> | 2012-03-06 02:59:12 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-06 03:49:42 +0400 |
| commit | f986a499ef6f317d906e6f6f281be966e1237a10 (patch) | |
| tree | 88ceafe9a214907bd25e8a8ffd8990fd5bd2b40e /fs/aio.c | |
| parent | c22ab332902333f83766017478c1ef6607ace681 (diff) | |
| download | linux-f986a499ef6f317d906e6f6f281be966e1237a10.tar.xz | |
kprobes: return proper error code from register_kprobe()
register_kprobe() aborts if the address of the new request falls in a
prohibited area (such as ftrace pouch, __kprobes annotated functions,
non-kernel text addresses, jump label text). We however don't return the
right error on this abort, resulting in a silent failure - incorrect
adding/reporting of kprobes ('perf probe do_fork+18' or 'perf probe
mcount' for instance).
In V2 we are incorporating Masami Hiramatsu's feedback.
This patch fixes it by returning -EINVAL upon failure.
While we are here, rename the label used for exit to be more appropriate.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Prashanth K Nageshappa <prashanth@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/aio.c')
0 files changed, 0 insertions, 0 deletions