Commit-ID: c53b4bb02b45ceec7a590e47820afbb5cef0bb81 Gitweb: https://git.kernel.org/tip/c53b4bb02b45ceec7a590e47820afbb5cef0bb81 Author: Jiri Olsa <jo...@kernel.org> AuthorDate: Thu, 15 Feb 2018 13:26:27 +0100 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Fri, 16 Feb 2018 14:25:56 -0300
tools lib symbol: Skip non-address kallsyms line Adding check on failed attempt to parse the address and skip the line parsing early in that case. The address can be replaced with '(null)' string in case user don't have enough permissions, like: $ cat /proc/kallsyms (null) A irq_stack_union (null) A __per_cpu_start ... Signed-off-by: Jiri Olsa <jo...@kernel.org> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/20180215122635.24029-2-jo...@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/lib/symbol/kallsyms.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/lib/symbol/kallsyms.c b/tools/lib/symbol/kallsyms.c index 914cb8e..689b6a1 100644 --- a/tools/lib/symbol/kallsyms.c +++ b/tools/lib/symbol/kallsyms.c @@ -38,6 +38,10 @@ int kallsyms__parse(const char *filename, void *arg, len = hex2u64(line, &start); + /* Skip the line if we failed to parse the address. */ + if (!len) + continue; + len++; if (len + 2 >= line_len) continue;