lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 22 Mar 2019 12:17:00 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Adrian Hunter <adrian.hunter@...el.com>, Jiri Olsa <jolsa@...nel.org>, Arnaldo Carvalho de Melo <acme@...hat.com> Subject: [PATCH 5.0 201/238] perf tools: Fix split_kallsyms_for_kcore() for trampoline symbols 5.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Hunter <adrian.hunter@...el.com> commit d6d457451eb94fa747dc202765592eb8885a7352 upstream. Kallsyms symbols do not have a size, so the size becomes the distance to the next symbol. Consequently the recently added trampoline symbols end up with large sizes because the trampolines are some distance from one another and the main kernel map. However, symbols that end outside their map can disrupt the symbol tree because, after mapping, it can appear incorrectly that they overlap other symbols. Add logic to truncate symbol size to the end of the corresponding map. Signed-off-by: Adrian Hunter <adrian.hunter@...el.com> Acked-by: Jiri Olsa <jolsa@...nel.org> Cc: stable@...r.kernel.org Fixes: d83212d5dd67 ("kallsyms, x86: Export addresses of PTI entry trampolines") Link: http://lkml.kernel.org/r/20190109091835.5570-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- tools/perf/util/symbol.c | 2 ++ 1 file changed, 2 insertions(+) --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -710,6 +710,8 @@ static int map_groups__split_kallsyms_fo } pos->start -= curr_map->start - curr_map->pgoff; + if (pos->end > curr_map->end) + pos->end = curr_map->end; if (pos->end) pos->end -= curr_map->start - curr_map->pgoff; symbols__insert(&curr_map->dso->symbols, pos);
Powered by blists - more mailing lists