esp_netif: retain RX pbuf free callback (IDFGH-17719)#18656
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dhimasardinata wants to merge 2 commits into
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esp_netif: retain RX pbuf free callback (IDFGH-17719)#18656dhimasardinata wants to merge 2 commits into
dhimasardinata wants to merge 2 commits into
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Store the driver RX-buffer free callback and driver handle inside each custom pbuf at allocation time. This keeps delayed pbuf_free() independent from later esp_netif driver config teardown. Add an esp_netif regression test that clears the driver config before freeing a custom pbuf.
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TD-er
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May 27, 2026
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May 27, 2026
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Summary
pbuf_free()independent from lateresp_netifdriver config teardown.esp_netifregression test that clears the driver config before freeing the custom pbuf.Root cause
esp_pbuf_allocate()kept anesp_netif_t *inside the custom pbuf. If the netif driver config was cleared before a queued pbuf was drained,esp_pbuf_free()could later call through the cleared/staleesp_netif->driver_free_rx_bufferpath.Verification
git diff --checkidf.py -C examples/wifi/getting_started/station -B /tmp/espnetif_pbuf_station_build -D SDKCONFIG=/tmp/espnetif_pbuf_station_sdkconfig set-target esp32 buildidf.py -C components/esp_netif/test_apps/test_app_esp_netif -B /tmp/espnetif_test_app_build -D SDKCONFIG=/tmp/espnetif_test_app_sdkconfig set-target esp32 buildRefs espressif/arduino-esp32#12517