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| author | He Zhe <zhe.he@windriver.com> | 2019-08-02 16:29:52 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-08 15:41:10 -0300 |
| commit | 5f5e25f1c7933a6e1673515c0b1d5acd82fea1ed (patch) | |
| tree | e4d1b719ffea2b873448060a191da46c85f34dea /lib/bitmap.c | |
| parent | cf30ae726c011e0372fd4c2d588466c8b50a8907 (diff) | |
perf cpumap: Fix writing to illegal memory in handling cpumap mask
cpu_map__snprint_mask() would write to illegal memory pointed by
zalloc(0) when there is only one cpu.
This patch fixes the calculation and adds sanity check against the input
parameters.
Signed-off-by: He Zhe <zhe.he@windriver.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Fixes: 4400ac8a9a90 ("perf cpumap: Introduce cpu_map__snprint_mask()")
Link: http://lkml.kernel.org/r/1564734592-15624-2-git-send-email-zhe.he@windriver.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'lib/bitmap.c')
0 files changed, 0 insertions, 0 deletions