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authorAlexey Dobriyan <adobriyan@gmail.com>2009-02-06 00:30:05 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2009-02-05 14:18:14 -0800
commitf01d1d546abb2f4028b5299092f529eefb01253a (patch)
tree625a9f9923ae53cc9bf75cf46fcebbbeb8ac84a8 /fs
parent33da8892a2f9e7d4b2d9a35fc80833ba2d2b1aa6 (diff)
downloadlinux-f01d1d546abb2f4028b5299092f529eefb01253a.tar.gz
seq_file: fix big-enough lseek() + read()
lseek() further than length of the file will leave stale ->index (second-to-last during iteration). Next seq_read() will not notice that ->f_pos is big enough to return 0, but will print last item as if ->f_pos is pointing to it. Introduced in commit cb510b8172602a66467f3551b4be1911f5a7c8c2 aka "seq_file: more atomicity in traverse()". Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/seq_file.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 2716c12eacf..5267098532b 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -102,6 +102,7 @@ static int traverse(struct seq_file *m, loff_t offset)
p = m->op->next(m, p, &index);
}
m->op->stop(m, p);
+ m->index = index;
return error;
Eoverflow: