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| author |   Anant Thazhemadam <anant.thazhemadam@gmail.com> | 2020-12-09 01:13:38 +0530 |
|---|---|---|
| committer |   Jan Kara <jack@suse.cz> | 2020-12-09 10:07:10 +0100 |
| commit | e51d68e76d604c6d5d1eb13ae1d6da7f6c8c0dfc (patch) | |
| tree | 8d3c159148dcecc3d40220974f586b3f82e8d4b0 /fs/quota | |
| parent | reiserfs: add check for an invalid ih_entry_count (diff) | |
| download | linux-dev-e51d68e76d604c6d5d1eb13ae1d6da7f6c8c0dfc.tar.xz linux-dev-e51d68e76d604c6d5d1eb13ae1d6da7f6c8c0dfc.zip | |
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.c | 2 |
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; |