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From 2529a3fc4f987f93e0774af865ac7cb6557bd0c2 Mon Sep 17 00:00:00 2001
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From: Benjamin Berg <bberg@redhat.com>
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Date: Fri, 4 Feb 2022 22:50:28 +0100
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Subject: [PATCH] core: Unset device ctx if it has been destroyed
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Devices can outlive their context in some cases (in particular with
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python garbage collection). Guard against this happening by clearing the
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ctx pointer so that it is not pointing to uninitialized memory.
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---
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libusb/core.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/libusb/core.c b/libusb/core.c
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index 7893ac23..1c1ada14 100644
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--- a/libusb/core.c
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+++ b/libusb/core.c
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@@ -2441,6 +2441,7 @@ void API_EXPORTED libusb_exit(libusb_context *ctx)
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for_each_device(_ctx, dev) {
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usbi_warn(_ctx, "device %d.%d still referenced",
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dev->bus_number, dev->device_address);
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+ DEVICE_CTX(dev) = NULL;
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}
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if (!list_empty(&_ctx->open_devs))
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