Possible bug in crosscore_int.c missing IRAM_ATTR in function esp_crosscore_isr_handle_yield
Posted: Tue Jun 12, 2018 6:41 pm
I can reproduce an unexpected exception trying to use esp-idf ota ops. My code is calling esp_ota_begin() which in turn erases a partition of the flash. The other core at this time is handling an rf protocol with interrupts, which are marked with IRAM_ATTR to ensure that they run from ram.
However, the exception is occurring in esp-idf code, specifically esp_crosscore_isr_handle_yield in crosscore_int.c (see below). I find that if I add the IRAM_ATTR attribute to the function esp_crosscore_isr_handle_yield() which is called from esp_crosscore_isr(), I can no longer reproduce the crash. Is this a bug due to the missing attribute?
However, the exception is occurring in esp-idf code, specifically esp_crosscore_isr_handle_yield in crosscore_int.c (see below). I find that if I add the IRAM_ATTR attribute to the function esp_crosscore_isr_handle_yield() which is called from esp_crosscore_isr(), I can no longer reproduce the crash. Is this a bug due to the missing attribute?
Code: Select all
Guru Meditation Error: Core 1 panic'ed (Cache disabled but cached memory region accessed)
Register dump:
PC : 0x400d1bd8 PS : 0x00060034 A0 : 0x40082c48 A1 : 0x3ffc0bf0
0x400d1bd8: esp_crosscore_isr_handle_yield at ..../firmware/esp-idf/components/esp32/./crosscore_int.c:48
0x40082c48: _xt_lowint1 at ..../firmware/esp-idf/components/freertos/./xtensa_vectors.S:1105
A2 : 0x3ffc5604 A3 : 0x3ffc10e0 A4 : 0x00000001 A5 : 0x4008bd58
0x4008bd58: _frxt_int_enter at ..../firmware/esp-idf/components/freertos/./portasm.S:119
A6 : 0x3ff42000 A7 : 0x700000bb A8 : 0x80081f42 A9 : 0x3ffc0bd0
A10 : 0x00000000 A11 : 0x00000000 A12 : 0x8008b5f1 A13 : 0x3ffe8e20
A14 : 0x00000001 A15 : 0x00000000 SAR : 0x00000017 EXCCAUSE: 0x00000007
EXCVADDR: 0x00000000 LBEG : 0x400012e5 LEND : 0x40001309 LCOUNT : 0x80121969 
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