diff options
| author | Will Deacon <[email protected]> | 2010-11-19 13:18:31 +0100 |
|---|---|---|
| committer | Russell King <[email protected]> | 2010-11-21 22:05:58 +0000 |
| commit | 1142b71d85894dcff1466dd6c871ea3c89e0352c (patch) | |
| tree | 57ff6436b35a8952c46e66acac9616342271886f /tools/perf/scripts/python/syscall-counts.py | |
| parent | 8fbb97a2bc9b8c91b5a4588ba80709e48dad3f16 (diff) | |
ARM: 6489/1: thumb2: fix incorrect optimisation in usracc
Commit 8b592783 added a Thumb-2 variant of usracc which, when it is
called with \rept=2, calls usraccoff once with an offset of 0 and
secondly with a hard-coded offset of 4 in order to avoid incrementing
the pointer again. If \inc != 4 then we will store the data to the wrong
offset from \ptr. Luckily, the only caller that passes \rept=2 to this
function is __clear_user so we haven't been actively corrupting user data.
This patch fixes usracc to pass \inc instead of #4 to usraccoff
when it is called a second time.
Cc: <[email protected]>
Reported-by: Tony Thompson <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Russell King <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions