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esp32: sanity check ISR handler address passed into esp_intr_alloc

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Return ESP_ERR_INVALID_ARG if the handler is not in IRAM (or RTC fast memory)
This commit is contained in:
Ivan Grokhotkov
2017-01-11 01:14:18 +08:00
parent 833102cbf3
commit a2e0c2432e
4 changed files with 41 additions and 3 deletions
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6
components/esp32/intr_alloc.c
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@@ -446,6 +446,12 @@ esp_err_t esp_intr_alloc_intrstatus(int source, int flags, uint32_t intrstatusre
if ((flags&ESP_INTR_FLAG_SHARED) && (!handler || source<0)) return ESP_ERR_INVALID_ARG;
//Statusreg should have a mask
if (intrstatusreg && !intrstatusmask) return ESP_ERR_INVALID_ARG;
//If the ISR is marked to be IRAM-resident, the handler must not be in the cached region
if ((flags&ESP_INTR_FLAG_IRAM) &&
(ptrdiff_t) handler >= 0x400C0000 &&
(ptrdiff_t) handler < 0x50000000 ) {
return ESP_ERR_INVALID_ARG;
}
//Default to prio 1 for shared interrupts. Default to prio 1, 2 or 3 for non-shared interrupts.
if ((flags&ESP_INTR_FLAG_LEVELMASK)==0) {