Though an initial autopsy officially determined his cause of death to be suicide by hanging, Cornell's family is waiting for the toxicology tests result that could reveal any substance in his system at the time of his death.
Cornell is survived by his wife and three children.
Cornell's wife Vicky and two children were joined by members of Soundgarden at the ceremony, as well as Foo Fighters frontman Dave Grohl, Courtney Love, Tom Morello, Pharrell Williams and actors Brad Pitt, Christian Bale and Josh Brolin, according to NBC Los Angeles.
Chester Bennington, of Linkin Park, attends a funeral for Chris Cornell at the Hollywood Forever Cemetery on Friday, May 26, 2017, in Los Angeles. "I don't believe he was foreshadowing his death, I believe he was playing a Led Zeppelin song that he'd played many times before". She said she was alarmed to hear that he had taken an "extra Ativan or two". They were on tour and were reportedly working on a new record when Cornell died.
The grave marker also referred to Cornell as "Beloved husband and father".
Before the service, Soundgarden music played from a portable speaker outside the cemetery's gates where a group of about a dozen fans gathered outside.
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Several musicians were sighted at the funeral proceedings, paying tribute to a man who was, by and large, considered one of rock's greatest vocalists of the 1990s and beyond.
Chris Cornell's closest friends said there were no warning signs that the Soundgarden frontman would take his own life following his Detroit concert earlier this month.
She says the bodyguard knocked down the front door but couldn't knock down the second, so she used a second phone to call the hotel and plead with them to open the interior door. The other six songs that make the chart include Soundgarden's "Fell on Black Days" and "Spoonman", Audioslave's "Like a Stone", "Show Me How to Live" and "I Am the Highway", and Temple of the Dog's "Hunger Strike".
She said he continued to repeat that phrase, and then started making very little sense. "My heart gleamed to see you happy, living and motivated". "The Chris I know would never do this to his family".
"I need to know what you took tonight".
I'm broken, but I will stand up for you and I will take care of our lovely babies. It sounds like you took something else.
You had always said I saved you, that you wouldn't be alive if it were not for me.