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authorDarrick J. Wong <darrick.wong@oracle.com>2017-08-24 13:22:06 -0400
committerTheodore Ts'o <tytso@mit.edu>2017-08-24 13:22:06 -0400
commit1bd8d6cd3e413d64e543ec3e69ff43e75a1cf1ea (patch)
tree51616e94cb1964210e88b6005cab48e4b10f12b2 /fs/ext4
parent901ed070df3c2c19e3083a734eafc82599fe991b (diff)
ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
In the ext4 implementations of SEEK_HOLE and SEEK_DATA, make sure we return -ENXIO for negative offsets instead of banging around inside the extent code and returning -EFSCORRUPTED. Reported-by: Mateusz S <muttdini@gmail.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org # 4.6
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/file.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 0d7cf0cc9b87..86ea1d92839a 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -595,7 +595,7 @@ static loff_t ext4_seek_data(struct file *file, loff_t offset, loff_t maxsize)
inode_lock(inode);
isize = i_size_read(inode);
- if (offset >= isize) {
+ if (offset < 0 || offset >= isize) {
inode_unlock(inode);
return -ENXIO;
}
@@ -658,7 +658,7 @@ static loff_t ext4_seek_hole(struct file *file, loff_t offset, loff_t maxsize)
inode_lock(inode);
isize = i_size_read(inode);
- if (offset >= isize) {
+ if (offset < 0 || offset >= isize) {
inode_unlock(inode);
return -ENXIO;
}