Messages in this thread |  | | From | Ammar Faizi <> | Subject | [PATCH 0/2] Two tracing patches for trace_events_hist.c | Date | Mon, 18 Apr 2022 01:53:21 +0700 |
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Hi,
Two patches here.
## Patch 1 If `WARN_ON(!glob)` is ever triggered, we will still continue executing the next lines. This will trigger the more serious problem, a NULL pointer dereference bug. Just return -EINVAL if @glob is NULL.
## Patch 2 Change `if (strlen(glob))` to `if (glob[0])`. No need to traverse to the end of string. If the first byte is not a NUL char, it's guaranteed `if (strlen(glob))` is true.
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> ---
Ammar Faizi (2): tracing: Return -EINVAL if WARN_ON(!glob) triggered in event_hist_trigger_parse() tracing: Change `if (strlen(glob))` to `if (glob[0])`
kernel/trace/trace_events_hist.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
base-commit: a1901b464e7e3e28956ae7423db2847dbbfb5be8 -- Ammar Faizi
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