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Date: Tue, 20 Sep 2016 18:12:45 +0200 From: Jiri Olsa <jolsa@...hat.com> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>, Don Zickus <dzickus@...hat.com>, Joe Mario <jmario@...hat.com>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Namhyung Kim <namhyung@...nel.org>, David Ahern <dsahern@...il.com>, Andi Kleen <andi@...stfloor.org> Subject: [PATCHv2 01/61] perf symbols: Do not open device files On Tue, Sep 20, 2016 at 05:36:47PM +0200, Jiri Olsa wrote: > On Tue, Sep 20, 2016 at 12:28:03PM -0300, Arnaldo Carvalho de Melo wrote: > > Em Mon, Sep 19, 2016 at 03:09:10PM +0200, Jiri Olsa escreveu: > > > Moving the regular file check into the entry > > > of the dso__read_binary_type_filename function. > > > > > > This way we can eliminate some calls and extend > > > the file check for all cases. > > > > Bzzt: > > > > [root@...et ~]# perf test "Test dso" > > 8: Test dso data read : FAILED! > > 9: Test dso data cache : FAILED! > > 10: Test dso data reopen : FAILED! > > [root@...et ~]# > > ugh, will check.. thanks ook, I confused this one with earlier version, sry.. correct version attached it's pushed in the perf/c2c branch now thanks, jirka --- The dso__read_binary_type_filename gets the dso's file name to open. We need to check it for regular file before trying to open it, otherwise we might get stuck with device file. Link: http://lkml.kernel.org/n/tip-twbp391v8v9f5idp584hlfov@git.kernel.org Signed-off-by: Jiri Olsa <jolsa@...nel.org> --- tools/perf/util/dso.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 774f6ec884d5..d2c6cdd9d42b 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -363,6 +363,9 @@ static int __open_dso(struct dso *dso, struct machine *machine) return -EINVAL; } + if (!is_regular_file(name)) + return -EINVAL; + fd = do_open(name); free(name); return fd; -- 2.7.4
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