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e454fef5d2
Add robust boundary checks when synthesizing mmap2 and build_id events to ensure that filename fields do not overflow the fixed-size stack allocations or the synthesized event structures. Verify that the filename fits safely within the allocated boundaries of the mmap2 event structure, and prevent potential heap/stack overflow corruptions from excessively long or corrupted kernel filenames. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Jones <ajones@ventanamicro.com> Cc: Anup Patel <anup@brainfault.org> Cc: Athira Rajeev <atrajeev@linux.ibm.com> Cc: Blake Jones <blakejones@google.com> Cc: Chen Ni <nichen@iscas.ac.cn> Cc: Chun-Tse Shao <ctshao@google.com> Cc: Dapeng Mi <dapeng1.mi@linux.intel.com> Cc: Derek Foreman <derek.foreman@collabora.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Dr. David Alan Gilbert <linux@treblig.org> Cc: Howard Chu <howardchu95@gmail.com> Cc: Hrishikesh Suresh <hrishikesh123s@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Krzysztof Łopatowski <krzysztof.m.lopatowski@gmail.com> Cc: Leo Yan <leo.yan@arm.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <pjw@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quan Zhou <zhouquan@iscas.ac.cn> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Swapnil Sapkal <swapnil.sapkal@amd.com> Cc: Thomas Falcon <thomas.falcon@intel.com> Cc: Tianyou Li <tianyou.li@intel.com> Cc: Yujie Liu <yujie.liu@intel.com> Cc: tanze <tanze@kylinos.cn> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>