Messages in this thread |  | | From | Xiaolei Wang <> | | Subject | [PATCH v2 0/4] media: imx8-isi: fix resource cleanup issues | | Date | Wed, 6 May 2026 11:12:06 +0800 |
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This series fixes several resource management bugs in the imx8-isi driver:
- A use-after-free triggered during rmmod because crossbar pads were freed before media links referencing them were removed. - A memory leak of subdev active state due to missing v4l2_subdev_cleanup() calls in crossbar and pipe cleanup paths. - A memory leak of isi->pipes on probe failure and normal unbind. - Missing cleanup of already-initialized pipes when probe fails partway through the channel loop or during v4l2 init.
All four issues trace back to the original driver introduction in cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver").
Changes in V2: - Split the previous patch 3 ("media: imx8-isi: fix isi->pipes memory leak in probe and remove") into two separate patches: - Patch 3/4: fix isi->pipes memory leak by switching to devm_kcalloc() - Patch 4/4: clean up already-initialized pipes on probe failure - Link to V1: https://patchwork.linuxtv.org/project/linux-media/cover/20260424231926.406079-1-xiaolei.wang@windriver.com/
Xiaolei Wang (4): media: imx8-isi: fix use-after-free on remove media: imx8-isi: add missing v4l2_subdev_cleanup() in crossbar and pipe media: imx8-isi: fix isi->pipes memory leak in probe and remove media: imx8-isi: clean up already-initialized pipes on probe failure
drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c | 7 +++++-- drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c | 1 + drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c | 1 + 3 files changed, 7 insertions(+), 2 deletions(-)
-- 2.43.0
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