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| author | Vasily Averin <vvs@virtuozzo.com> | 2020-04-10 14:34:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-10 15:36:22 -0700 |
| commit | f4d74ef6220c1eda0875da30457bef5c7111ab06 (patch) | |
| tree | 16f32d207bdd9c7bf6ad44c8d953d1207b8ec316 /kernel/gcov/fs.c | |
| parent | 3bfa7e141b0bbb818b25e0daafb65aee92e49ac4 (diff) | |
| download | lwn-f4d74ef6220c1eda0875da30457bef5c7111ab06.tar.gz lwn-f4d74ef6220c1eda0875da30457bef5c7111ab06.zip | |
kernel/gcov/fs.c: gcov_seq_next() should increase position index
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>
Diffstat (limited to 'kernel/gcov/fs.c')
| -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 5e891c3c2d93..82babf5aa077 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; } |