btrfs: Check name_len before read in iterate_dir_item
authorSu Yue <suy.fnst@cn.fujitsu.com>
Tue, 6 Jun 2017 09:57:05 +0000 (17:57 +0800)
committerDavid Sterba <dsterba@suse.com>
Wed, 21 Jun 2017 17:16:04 +0000 (19:16 +0200)
commit59b0a7f2c7c1bf374db319fcc2c99305133d00d5
tree787cda8c020a0ec7455e45fd015fc21fac3ed89c
parent3c1d41844896f59ac771daf146a5329525dc87c5
btrfs: Check name_len before read in iterate_dir_item

Since iterate_dir_item checks name_len in its own way,
so use btrfs_is_name_len_valid not 'verify_dir_item' to make more strict
name_len check.

Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ switched ENAMETOOLONG to EIO ]
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/send.c