lkml.org 
[lkml]   [2012]   [Jan]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] perf: check if address is in range
On Thu, Jan 12, 2012 at 10:49 PM, Daniel Baluta <dbaluta@ixiacom.com> wrote:
> On Thu, Jan 12, 2012 at 10:39 PM, Sorin Dumitru
> <dumitru.sorin87@gmail.com> wrote:
>> When addr isn't in the [sym->start,sym->end] range offset
>> will be a very big value, giving us a segfault when we do:
>>        h->addr[offset]++
>> Fix this by checking that addr is in the correct range.
>>
>> Signed-off-by: Sorin Dumitru <dumitru.sorin87@gmail.com>
>> ---
>>  tools/perf/util/annotate.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
>> index 011ed26..4ddc55f 100644
>> --- a/tools/perf/util/annotate.c
>> +++ b/tools/perf/util/annotate.c
>> @@ -64,7 +64,7 @@ int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
>>
>>        pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
>>
>> -       if (addr >= sym->end)
>> +       if (addr <= sym->start || addr >= sym->end)
>>                return 0;
>
> Shouldn't this be addr < sym->start ?
>
> thanks,
> Daniel.

You're right, i resent the patch.

Thanks,
Sorin
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2012-01-12 22:03    [W:0.130 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site