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perf machine: Fix paranoid check in machine__set_kernel_mmap() 

The machine__set_kernel_mmap() is to setup addresses of the kernel map
using external info.  But it has a check when the address is given from
an incorrect input which should have the start and end address of 0
(i.e. machine__process_kernel_mmap_event).

But we also use the end address of 0 for a valid input so change it to
check both start and end addresses.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20180219101936.GD1583@sejong
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2018-02-19 19:00:46 +09:00 committed by Arnaldo Carvalho de Melo
parent 47812e0091
commit 1d12cec6ce
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/machine.c
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@ -1226,7 +1226,7 @@ static void machine__set_kernel_mmap(struct machine *machine,
* Be a bit paranoid here, some perf.data file came with
* a zero sized synthesized MMAP event for the kernel.
*/
if (machine->vmlinux_maps[i]->end == 0)
if (start == 0 && end == 0)
machine->vmlinux_maps[i]->end = ~0ULL;
}
}