drm/panic: Test address from kmap op for NULL

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Do nothing if kmap_local_page_try_from_panic() returns NULL. This is
not likely to hapen, as the previous page from the same memory area
has been mapped successfully.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 23437509a6 ("drm/panic: Fix 24bit pixel crossing page boundaries")
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.18+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260911124540.279841-3-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2026-09-11 14:43:55 +02:00

parent 6596aae255

commit 6a6304ec3c

1 changed files with 2 additions and 0 deletions

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drivers/gpu/drm/drm_panic.c

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