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由 Greg Kroah-Hartman 提交于
Lots of callers of debugfs_lookup() were just checking NULL to see if the file/directory was found or not. By changing this in ff9fb72b ("debugfs: return error values, not NULL") we caused some subsystems to easily crash. Fixes: ff9fb72b ("debugfs: return error values, not NULL") Reported-by: syzbot+b382ba6a802a3d242790@syzkaller.appspotmail.com Reported-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Omar Sandoval <osandov@fb.com> Cc: Jens Axboe <axboe@fb.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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