3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gabriel de Perthuis <g2p.code@xxxxxxxxx> commit 03b71c6ca6286625d8f1ed44aabab9b5bf5dac10 upstream. The search ioctl skips items that are too large for a result buffer, but inline items of a certain size occuring before any search result is found would trigger an overflow and stop the search entirely. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=57641 Signed-off-by: Gabriel de Perthuis <g2p.code+btrfs@xxxxxxxxx> Signed-off-by: Josef Bacik <jbacik@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/btrfs/ioctl.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1653,7 +1653,11 @@ static noinline int copy_to_sk(struct bt item_off = btrfs_item_ptr_offset(leaf, i); item_len = btrfs_item_size_nr(leaf, i); - if (item_len > BTRFS_SEARCH_ARGS_BUFSIZE) + btrfs_item_key_to_cpu(leaf, key, i); + if (!key_in_sk(key, sk)) + continue; + + if (sizeof(sh) + item_len > BTRFS_SEARCH_ARGS_BUFSIZE) item_len = 0; if (sizeof(sh) + item_len + *sk_offset > @@ -1662,10 +1666,6 @@ static noinline int copy_to_sk(struct bt goto overflow; } - btrfs_item_key_to_cpu(leaf, key, i); - if (!key_in_sk(key, sk)) - continue; - sh.objectid = key->objectid; sh.offset = key->offset; sh.type = key->type; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html