diff options
| author | Kees Cook <[email protected]> | 2012-08-15 11:41:55 -0700 |
|---|---|---|
| committer | James Morris <[email protected]> | 2012-08-17 20:40:38 +1000 |
| commit | 7612bfeecc197bbb6629842b5c6ff1967f0a9b70 (patch) | |
| tree | d73acd2bc97866b256a70acb83e4ca69bce6e32d /tools/perf/util/trace-event-scripting.c | |
| parent | d9875690d9b89a866022ff49e3fcea892345ad92 (diff) | |
Yama: access task_struct->comm directly
The core ptrace access checking routine holds a task lock, and when
reporting a failure, Yama takes a separate task lock. To avoid a
potential deadlock with two ptracers taking the opposite locks, do not
use get_task_comm() and just use ->comm directly since accuracy is not
important for the report.
Reported-by: Fengguang Wu <[email protected]>
Suggested-by: Oleg Nesterov <[email protected]>
CC: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Acked-by: John Johansen <[email protected]>
Signed-off-by: James Morris <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions