| commit | 36991ca68db9dd43bac7f3519f080ee3939263ef | |
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Wed, 23 Jan 2019 13:48:54 +0000 (23 14:48 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Thu, 31 Jan 2019 13:07:59 +0000 (31 14:07 +0100) | ||
| tree | 49a095083f83399fa032a7e3264a1509d79dc983 | treesnapshot (tar.gz zip) |
| parent | 2c1cf00eeacb784781cf1c9896b8af001246d339 | commitdiff |
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>
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 | diffblobblamehistory |