ext4: fix leaking sysfs kobject after failed mount
commit cb8d53d2c97369029cc638c9274ac7be0a316c75 upstream.
ext4_unregister_sysfs() only deletes the kobject. The reference to it
needs to be put separately, like ext4_put_super() does.
This addresses the syzbot report
"memory leak in kobject_set_name_vargs (3)"
(https://syzkaller.appspot.com/bug?extid=9f864abad79fae7c17e1).
Reported-by: syzbot+9f864abad79fae7c17e1@syzkaller.appspotmail.com
Fixes: 72ba74508b
("ext4: release sysfs kobject when failing to enable quotas on mount")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20200922162456.93657-1-ebiggers@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
b11e9dd66e
commit
c0de3cf2f2
|
@ -4684,6 +4684,7 @@ cantfind_ext4:
|
|||
|
||||
failed_mount8:
|
||||
ext4_unregister_sysfs(sb);
|
||||
kobject_put(&sbi->s_kobj);
|
||||
failed_mount7:
|
||||
ext4_unregister_li_request(sb);
|
||||
failed_mount6:
|
||||
|
|
Loading…
Reference in New Issue