Re: [PATCH][next] perf tests: fix out of bounds access on array fd when cnt is 100

[Arnaldo Carvalho de Melo]

Em Wed, Mar 14, 2018 at 05:33:54PM +0000, Colin King escreveu:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Currently when cnt is 100 an array bounds overflow occurs on the assignment
> of fd[cnt]. Fix this by performing the bounds check on cnt before writing
> to fd.
> 
> Detected by cppcheck:
> tools/perf/tests/bp_account.c:115: (warning) Either the condition
> 'cnt==100' is redundant or the array 'fd[100]' is accessed at index 100,
> which is out of bounds.
> 
> Fixes: 032db28e5fa3 ("perf tests: Add breakpoint accounting/modify test")

Thanks, applied.

- Arnaldo