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d7f48aa7d6
isys_register_devices() registers the V4L2 async notifier via
isys_notifier_init(). If a subsequent probe step such as
isys_fw_log_init() fails, isys_probe() jumps to the out_cleanup label
which only calls isys_unregister_devices(). That helper tears down the
video devices, subdevices, V4L2 device and media device, but never
unregisters or cleans up the async notifier.
As a result the notifier stays chained in the global notifier_list while
the enclosing struct ipu7_isys is freed by devres, leading to list
corruption and a use-after-free the next time the list is walked.
The remove path already does the right thing by calling
isys_notifier_cleanup() before isys_unregister_devices(). Mirror that on
the probe error path so the notifier is unregistered and cleaned up
before the device is torn down.
Fixes:
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History
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|---|---|---|
| .. | ||
| atomisp | ||
| av7110 | ||
| imx | ||
| ipu3 | ||
| ipu7 | ||
| max96712 | ||
| meson/vdec | ||
| sunxi | ||
| tegra-video | ||
| Kconfig | ||
| Makefile | ||