projects / linux-block.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 2c1cf00) | patch
blk-mq: protect debugfs_create_files() from failures
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 23 Jan 2019 13:48:54 +0000 (14:48 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 31 Jan 2019 13:07:59 +0000 (14:07 +0100)
commit36991ca68db9dd43bac7f3519f080ee3939263ef
tree49a095083f83399fa032a7e3264a1509d79dc983tree | snapshot
parent2c1cf00eeacb784781cf1c9896b8af001246d339commit | diff
blk-mq: protect debugfs_create_files() from failures

If debugfs were to return a non-NULL error for a debugfs call, using
that pointer later in debugfs_create_files() would crash.

Fix that by properly checking the pointer before referencing it.

Reported-by: Michal Hocko <mhocko@kernel.org>
Reported-and-tested-by: syzbot+b382ba6a802a3d242790@syzkaller.appspotmail.com
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
block/blk-mq-debugfs.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)