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| author | KAMEZAWA Hiroyuki <[email protected]> | 2010-02-02 13:44:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2010-02-02 18:11:22 -0800 |
| commit | 325fda71d0badc1073dc59f12a948f24ff05796a (patch) | |
| tree | b143817aba0e8c0d9b4b689bde32fa893a9fb559 /tools/perf/util/trace-event-scripting.c | |
| parent | 931e80e4b3263db75c8e34f078d22f11bbabd3a3 (diff) | |
devmem: check vmalloc address on kmem read/write
Otherwise vmalloc_to_page() will BUG().
This also makes the kmem read/write implementation aligned with mem(4):
"References to nonexistent locations cause errors to be returned." Here we
return -ENXIO (inspired by Hugh) if no bytes have been transfered to/from
user space, otherwise return partial read/write results.
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions