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| author | Mike Leach <mike.leach@linaro.org> | 2019-11-04 11:12:42 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-13 08:52:39 +0100 |
| commit | 7c193ed6e1a1276a1b3f6b8b0430cb2892e31740 (patch) | |
| tree | 8027ed69a2f357a1b7484a9faff4cc9928e77359 /include/linux/stacktrace.h | |
| parent | 1d01bae86690323e163260287e59689d5782081a (diff) | |
coresight: etm4x: Fix input validation for sysfs.
commit 2fe6899e36aa174abefd017887f9cfe0cb60c43a upstream.
A number of issues are fixed relating to sysfs input validation:-
1) bb_ctrl_store() - incorrect compare of bit select field to absolute
value. Reworked per ETMv4 specification.
2) seq_event_store() - incorrect mask value - register has two
event values.
3) cyc_threshold_store() - must mask with max before checking min
otherwise wrapped values can set illegal value below min.
4) res_ctrl_store() - update to mask off all res0 bits.
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Fixes: a77de2637c9eb ("coresight: etm4x: moving sysFS entries to a dedicated file")
Cc: stable <stable@vger.kernel.org> # 4.9+
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20191104181251.26732-6-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/stacktrace.h')
0 files changed, 0 insertions, 0 deletions