lkml.org 
[lkml]   [2020]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.4 336/344] help_next should increase position index
Date
From: Vasily Averin <vvs@virtuozzo.com>

[ Upstream commit 9f198a2ac543eaaf47be275531ad5cbd50db3edf ]

if seq_file .next fuction does not change position index,
read after some lseek can generate unexpected output.

https://bugzilla.kernel.org/show_bug.cgi?id=206283
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/orangefs/orangefs-debugfs.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/orangefs/orangefs-debugfs.c b/fs/orangefs/orangefs-debugfs.c
index 25543a966c486..29eaa45443727 100644
--- a/fs/orangefs/orangefs-debugfs.c
+++ b/fs/orangefs/orangefs-debugfs.c
@@ -273,6 +273,7 @@ static void *help_start(struct seq_file *m, loff_t *pos)

static void *help_next(struct seq_file *m, void *v, loff_t *pos)
{
+ (*pos)++;
gossip_debug(GOSSIP_DEBUGFS_DEBUG, "help_next: start\n");

return NULL;
--
2.20.1


\
 
 \ /
  Last update: 2020-02-21 09:30    [W:0.930 / U:0.336 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site