[PATCH 0/4] tracing: fix histogram and injection buffer overflows

The histogram expression and trace injection paths derive allocation sizes
from unbounded strings or field metadata. This series bounds histogram
formatting, validates user-event field declarations and injection allocation
sizes, and protects dynamic string growth.

The first two patches validate metadata at the producer and consumer
boundaries. The last two tighten trace injection allocation checks, including
events with no user fields.

Li Qiang (4):
  tracing/hist: Prevent overflow in histogram expression strings
  tracing/user_events: Validate explicit struct field sizes
  tracing/inject: Validate entry allocation size
  tracing/inject: Prevent overflow growing string fields

 kernel/trace/trace_events_hist.c   | 89 ++++++++++++++++++++----------
 kernel/trace/trace_events_inject.c | 34 ++++++++++--
 kernel/trace/trace_events_user.c   | 16 ++++--
 3 files changed, 99 insertions(+), 40 deletions(-)


base-commit: b95f03f04d475aa6719d15a636ddf32222d55657
-- 
2.43.0