drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

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[ Upstream commit 1b254b791d ]

We can't simply free the connector after calling drm_connector_init on it.
We need to clean up the drm side first.

It might not fix all regressions from commit 2b5d1c29f6
("drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts"),
but at least it fixes a memory corruption in error handling related to
that commit.

Link: https://lore.kernel.org/lkml/20230806213107.GFZNARG6moWpFuSJ9W@fat_crate.local/
Fixes: 95983aea80 ("drm/nouveau/disp: add connector class")
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230814144933.3956959-1-kherbst@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Karol Herbst 2023-08-14 16:49:32 +02:00 • committed by Greg Kroah-Hartman

parent 9a5d622b54

commit 872feeecd0

1 changed files with 7 additions and 4 deletions

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drivers/gpu/drm/nouveau/nouveau_connector.c

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