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[4.9,170/240] fs: dlm: fix debugfs dump

Message ID 20210520092114.359205151@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH May 20, 2021, 9:22 a.m. UTC 
From: Alexander Aring <aahringo@redhat.com>

[ Upstream commit 92c48950b43f4a767388cf87709d8687151a641f ]

This patch fixes the following message which randomly pops up during
glocktop call:

seq_file: buggy .next function table_seq_next did not update position index

The issue is that seq_read_iter() in fs/seq_file.c also needs an
increment of the index in an non next record case as well which this
patch fixes otherwise seq_read_iter() will print out the above message.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/dlm/debug_fs.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index 466f7d60edc2..fabce23fdbac 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -545,6 +545,7 @@  static void *table_seq_next(struct seq_file *seq, void *iter_ptr, loff_t *pos)
 
 		if (bucket >= ls->ls_rsbtbl_size) {
 			kfree(ri);
+			++*pos;
 			return NULL;
 		}
 		tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;