From: Qu Wenruo Date: Wed, 7 Sep 2016 02:54:19 +0000 (+0800) Subject: btrfs-progs: qgroup: Fix regression leads to corrupted qgroup status X-Git-Tag: upstream/4.16.1~1232 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7c646c538e74ab7fc0eece14983e85031d1031d4;p=platform%2Fupstream%2Fbtrfs-progs.git btrfs-progs: qgroup: Fix regression leads to corrupted qgroup status Commit 93dabf211d74daf6e3de642bdd887a90a00f7b49 Author: Mark Fasheh Date: Fri Jun 17 13:37:48 2016 -0700 btrfs-progs: check: verify qgroups above level 0 This commit introduced a new regression which corrupts read_qgroup_status, since it iterate leaf with manually specified slot, not correct path->slot[0]. This leads to wrong slot[0] and read_qgroup_status() will read out wrong flags, leading to regression. Fix read_qgroup_status() by using eb and slot instread of wrong path strucutre. Reported-by: Tsutomu Itoh Cc: Mark Fasheh Signed-off-by: Qu Wenruo Signed-off-by: David Sterba --- diff --git a/qgroup-verify.c b/qgroup-verify.c index 66eb870..f6df12d 100644 --- a/qgroup-verify.c +++ b/qgroup-verify.c @@ -874,15 +874,14 @@ static int add_qgroup_relation(u64 memberid, u64 parentid) return 0; } -static void read_qgroup_status(struct btrfs_path *path, +static void read_qgroup_status(struct extent_buffer *eb, int slot, struct counts_tree *counts) { struct btrfs_qgroup_status_item *status_item; u64 flags; - status_item = btrfs_item_ptr(path->nodes[0], path->slots[0], - struct btrfs_qgroup_status_item); - flags = btrfs_qgroup_status_flags(path->nodes[0], status_item); + status_item = btrfs_item_ptr(eb, slot, struct btrfs_qgroup_status_item); + flags = btrfs_qgroup_status_flags(eb, status_item); /* * Since qgroup_inconsist/rescan_running is just one bit, * assign value directly won't work. @@ -946,7 +945,7 @@ loop: } if (key.type == BTRFS_QGROUP_STATUS_KEY) { - read_qgroup_status(&path, &counts); + read_qgroup_status(leaf, i, &counts); continue; }