From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out30-57.freemail.mail.aliyun.com ([115.124.30.57]:49097 "EHLO out30-57.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726020AbgEaK2k (ORCPT ); Sun, 31 May 2020 06:28:40 -0400 From: AliOS system security Subject: [PATCH] mksysmap: Fix the mismatch of '.L' symbols in System.map Date: Sun, 31 May 2020 18:28:24 +0800 Message-Id: <1590920904-60002-1-git-send-email-alios_sys_security@linux.alibaba.com> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: masahiroy@kernel.org, michal.lkml@markovi.net Cc: linux-kbuild@vger.kernel.org, AliOS system security When System.map was generated, the kernel used mksysmap to filter the kernel symbols, but all the symbols with the second letter 'L' in the kernel were filtered out, not just the symbols starting with 'dot + L'. For example: ashimida@ubuntu:~/linux$ cat System.map |grep ' .L' ashimida@ubuntu:~/linux$ nm -n vmlinux |grep ' .L' ffff0000088028e0 t bLength_show ...... ffff0000092e0408 b PLLP_OUTC_lock ffff0000092e0410 b PLLP_OUTA_lock I see that in the original patch[1], the original intent should be to filter all local symbols starting with '.L', so I wonder if the code here may add a '\' before '.L'? [1]. mksysmap: Add h8300 local symbol pattern Signed-off-by: AliOS system security --- scripts/mksysmap | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/mksysmap b/scripts/mksysmap index a35acc0..9aa23d1 100755 --- a/scripts/mksysmap +++ b/scripts/mksysmap @@ -41,4 +41,4 @@ # so we just ignore them to let readprofile continue to work. # (At least sparc64 has __crc_ in the middle). -$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( .L\)' > $2 +$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( \.L\)' > $2 -- 2.7.4