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| author | Vasily Averin <vvs@virtuozzo.com> | 2020-04-10 14:34:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-02 17:23:05 +0200 |
| commit | 7526678b954d71f6349d0120e70721778fb72487 (patch) | |
| tree | 0f698c79a7c1966c4ad7e45a20c29424e50ffd89 | |
| parent | 8c90458f4e2efee4e04ccbf9cc9bbaa405e5f7de (diff) | |
| download | linux-stable-7526678b954d71f6349d0120e70721778fb72487.tar.gz linux-stable-7526678b954d71f6349d0120e70721778fb72487.tar.bz2 linux-stable-7526678b954d71f6349d0120e70721778fb72487.zip | |
kernel/gcov/fs.c: gcov_seq_next() should increase position index
[ Upstream commit f4d74ef6220c1eda0875da30457bef5c7111ab06 ]
If seq_file .next function 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: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: NeilBrown <neilb@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Waiman Long <longman@redhat.com>
Link: http://lkml.kernel.org/r/f65c6ee7-bd00-f910-2f8a-37cc67e4ff88@virtuozzo.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | kernel/gcov/fs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/gcov/fs.c b/kernel/gcov/fs.c index edf67c493a8e..e473f6a1f6ca 100644 --- a/kernel/gcov/fs.c +++ b/kernel/gcov/fs.c @@ -108,9 +108,9 @@ static void *gcov_seq_next(struct seq_file *seq, void *data, loff_t *pos) { struct gcov_iterator *iter = data; + (*pos)++; if (gcov_iter_next(iter)) return NULL; - (*pos)++; return iter; } |