Former Guns n' Roses drummer Steven Adler was hospitalized last night, after allegedly stabbing himself.

TMZ says that it happened last night at his home in L.A. Someone called 911 . . . and when the cops and paramedics arrived, they found Steven with a stab wound to his stomach. Sources say he suffered non-life threatening injuries.

TMZ makes it sound like Steven intentionally stabbed himself, but that's not 100% clear. For what it's worth, he's struggled with substance abuse for decades.