[tip:perf/urgent] perf_event: Fix __dsos__write_buildid_table()

tip-bot for Xiao Guangrong
2009-12-07T05:31:56Z

Commit-ID: d9541ed3241bb6c2b805d3ea0e87563cf2a0c5c3
Gitweb: http://git.kernel.org/tip/d9541ed3241bb6c2b805d3ea0e87563cf2a0c5c3
Author: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
AuthorDate: Mon, 7 Dec 2009 12:07:15 +0800
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Mon, 7 Dec 2009 06:26:24 +0100

perf_event: Fix __dsos__write_buildid_table()

The remain buff size is 'len - pos->long_name_len - 1', not
'len - pos->long_name_len + 1'

This bug was introduced by commit 7691b1e ("perf tools: Misc small
fixes").

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B1C7F73.80707@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/header.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 08b6759..59a9c0b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -209,7 +209,7 @@ static int __dsos__write_buildid_table(struct list_head *head, int fd)
err = do_write(fd, pos->long_name, pos->long_name_len + 1);
if (err < 0)
return err;
- err = do_write(fd, zero_buf, len - pos->long_name_len + 1);
+ err = do_write(fd, zero_buf, len - pos->long_name_len - 1);
if (err < 0)
return err;
}