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authorAnant Thazhemadam <anant.thazhemadam@gmail.com>2020-12-08 22:43:38 +0300
committerJan Kara <jack@suse.cz>2020-12-09 12:07:10 +0300
commite51d68e76d604c6d5d1eb13ae1d6da7f6c8c0dfc (patch)
tree8d3c159148dcecc3d40220974f586b3f82e8d4b0 /fs/quota
parentd24396c5290ba8ab04ba505176874c4e04a2d53c (diff)
downloadlinux-e51d68e76d604c6d5d1eb13ae1d6da7f6c8c0dfc.tar.xz
fs: quota: fix array-index-out-of-bounds bug by passing correct argument to vfs_cleanup_quota_inode()
When dquot_resume() was last updated, the argument that got passed to vfs_cleanup_quota_inode was incorrectly set. If type = -1 and dquot_load_quota_sb() returns a negative value, then vfs_cleanup_quota_inode() gets called with -1 passed as an argument, and this leads to an array-index-out-of-bounds bug. Fix this issue by correctly passing the arguments. Fixes: ae45f07d47cc ("quota: Simplify dquot_resume()") Link: https://lore.kernel.org/r/20201208194338.7064-1-anant.thazhemadam@gmail.com Reported-by: syzbot+2643e825238d7aabb37f@syzkaller.appspotmail.com Tested-by: syzbot+2643e825238d7aabb37f@syzkaller.appspotmail.com CC: stable@vger.kernel.org Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
-rw-r--r--fs/quota/dquot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index bb02989d92b6..4f1373463766 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2455,7 +2455,7 @@ int dquot_resume(struct super_block *sb, int type)
ret = dquot_load_quota_sb(sb, cnt, dqopt->info[cnt].dqi_fmt_id,
flags);
if (ret < 0)
- vfs_cleanup_quota_inode(sb, type);
+ vfs_cleanup_quota_inode(sb, cnt);
}
return ret;