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Jeff Epler 9f434dd8de py/gc: Ensure a gap of one byte after the ATB. 
Prior to this fix the follow crash occurred.  With a GC layout of:

    GC layout:
      alloc table at 0x3fd80428, length 32001 bytes, 128004 blocks
      finaliser table at 0x3fd88129, length 16001 bytes, 128008 blocks
      pool at 0x3fd8bfc0, length 2048064 bytes, 128004 blocks

Block 128003 is an AT_HEAD and eventually is passed to gc_mark_subtree.
This causes gc_mark_subtree to call ATB_GET_KIND(128004).  When block 1 is
created with a finaliser, the first byte of the finaliser table becomes
0x2, but ATB_GET_KIND(128004) reads these bits as AT_TAIL, and then
gc_mark_subtree references past the end of the heap, which happened to be
past the end of PSRAM on the esp32-s2.

The fix in this commit is to ensure there is a one-byte gap after the ATB
filled permanently with AT_FREE.

Fixes issue #7116.

See also https://github.com/adafruit/circuitpython/issues/5021

Signed-off-by: Jeff Epler <jepler@gmail.com>
Signed-off-by: Damien George <damien@micropython.org>
 		2022-12-08 14:29:58 +11:00
..
argcheck.c py: Remove the word "yet" from exception messages. 2022-12-06 13:34:52 +11:00
asmarm.c py/asmarm: Add asm_arm_ldrh_reg_reg_offset() helper func. 2022-05-23 14:21:16 +10:00
asmarm.h py/asm: Add ASM_LOAD16_REG_REG_OFFSET macro for load-u16 with offset. 2022-05-23 14:21:16 +10:00
asmbase.c py/emit: Suppress unreachable bytecode/native code that follows jump. 2022-06-20 22:28:18 +10:00
asmbase.h py/emit: Suppress unreachable bytecode/native code that follows jump. 2022-06-20 22:28:18 +10:00
asmthumb.c py/asmthumb: Provide implementations of clz/ctz for msvc. 2022-05-24 22:27:18 +10:00
asmthumb.h py/asmthumb: Make ARMv7-M instruction use dynamically selectable. 2022-05-23 23:01:12 +10:00
asmx64.c py/asmx64: Support full range of regs in asm_x64_lea_disp_to_r64. 2022-05-17 14:25:51 +10:00
asmx64.h py/asm: Add ASM_LOAD16_REG_REG_OFFSET macro for load-u16 with offset. 2022-05-23 14:21:16 +10:00
asmx86.c py/asm: Add funcs/macros to emit machine code for logical-shift-right. 2020-06-27 00:24:04 +10:00
asmx86.h py/asm: Add ASM_LOAD16_REG_REG_OFFSET macro for load-u16 with offset. 2022-05-23 14:21:16 +10:00
asmxtensa.c py/asmxtensa: Fix use of l32i/s32i when offset won't fit in encoding. 2022-03-30 16:32:17 +11:00
asmxtensa.h py/asm: Add ASM_LOAD16_REG_REG_OFFSET macro for load-u16 with offset. 2022-05-23 14:21:16 +10:00
bc.c py/bc: Fix checking for duplicate **kwargs. 2022-11-28 11:23:22 +11:00
bc.h py: Pass in address to compiled module instead of returning it. 2022-12-08 12:27:23 +11:00
bc0.h py: Change jump-if-x-or-pop opcodes to have unsigned offset argument. 2022-03-28 15:43:09 +11:00
binary.c py: Clean up formatting of union definitions. 2022-08-23 13:09:57 +10:00
binary.h py/binary: Change mp_uint_t to size_t for index, size, align args. 2019-09-02 13:14:27 +10:00
builtin.h py/builtinimport: Allow overriding of mp_builtin___import__. 2022-08-23 13:34:06 +10:00
builtinevex.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
builtinhelp.c py/obj: Add accessors for type slots and use everywhere. 2022-09-19 19:06:07 +10:00
builtinimport.c py: Pass in address to compiled module instead of returning it. 2022-12-08 12:27:23 +11:00
compile.c py: Pass in address to compiled module instead of returning it. 2022-12-08 12:27:23 +11:00
compile.h py: Pass in address to compiled module instead of returning it. 2022-12-08 12:27:23 +11:00
dynruntime.h py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
dynruntime.mk py/dynruntime.mk: Allow building assembly source in natmods. 2022-08-11 14:00:13 +10:00
emit.h py/emit: Remove logic to detect last-emit-was-return-value. 2022-06-20 22:28:18 +10:00
emitbc.c py/emit: Suppress unreachable bytecode/native code that follows jump. 2022-06-20 22:28:18 +10:00
emitcommon.c py/compile: De-duplicate constant objects in module's constant table. 2022-05-18 15:23:11 +10:00
emitglue.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitglue.h py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitinlinethumb.c py/emitinlinethumb: Make float instruction use dynamically selectable. 2022-05-26 12:22:07 +10:00
emitinlinextensa.c py: Use unsigned comparison of chars. 2020-10-22 11:47:36 +02:00
emitnarm.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitnative.c py/emitnative: Ensure load_subscr does not clobber existing REG_ARG_2. 2022-11-11 12:25:32 +11:00
emitnthumb.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitnx64.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitnx86.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitnxtensa.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
emitnxtensawin.c py/emitnative: Access qstr values using indirection table qstr_table. 2022-05-23 15:43:06 +10:00
formatfloat.c py/formatfloat: Use pow(10, e) instead of pos/neg_pow lookup tables. 2022-08-12 23:53:34 +10:00
formatfloat.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
frozenmod.c py: Rework bytecode and .mpy file format to be mostly static data. 2022-02-24 18:08:43 +11:00
frozenmod.h py/builtin: Clean up and simplify import_stat and builtin_open config. 2022-05-25 13:04:45 +10:00
gc.c py/gc: Ensure a gap of one byte after the ATB. 2022-12-08 14:29:58 +11:00
gc.h py/gc: Allow the GC heap to be split over multiple memory areas. 2022-07-23 00:42:54 +10:00
grammar.h py/compile: Implement PEP 526, syntax for variable annotations. 2020-06-16 23:18:01 +10:00
lexer.c py/persistentcode: Remove unicode feature flag from .mpy file. 2022-05-17 12:51:54 +10:00
lexer.h py/builtin: Clean up and simplify import_stat and builtin_open config. 2022-05-25 13:04:45 +10:00
make_root_pointers.py py/make_root_pointers: Add MP_REGISTER_ROOT_POINTER parser/generator. 2022-07-18 13:48:23 +10:00
makecompresseddata.py py/makecompresseddata.py: Make compression deterministic. 2020-04-20 10:32:49 +10:00
makemoduledefs.py py/makemoduledefs.py: Emit useful error for legacy MP_REGISTER_MODULE. 2022-06-14 15:05:37 +01:00
makeqstrdata.py py/qstr: Separate hash and len from string data. 2022-02-11 22:52:32 +11:00
makeqstrdefs.py py/make_root_pointers: Add MP_REGISTER_ROOT_POINTER parser/generator. 2022-07-18 13:48:23 +10:00
makeversionhdr.py py/makeversionhdr.py: Allow running outside of repo. 2022-11-22 14:36:21 +11:00
malloc.c py/malloc: Introduce m_tracked_calloc, m_tracked_free functions. 2022-05-05 10:31:50 +10:00
map.c py/obj: Add static safety checks to mp_obj_is_type(). 2022-07-18 11:17:46 +10:00
misc.h py/misc: Remove use of bitfield from vstr_t. 2022-10-12 00:33:09 +11:00
mkenv.mk py/mkenv.mk: Make CPP definition explicit for consistency. 2022-09-29 14:17:37 +02:00
mkrules.cmake rp2/Makefile: Add support for BOARD_VARIANTS. 2022-09-26 12:38:58 +10:00
mkrules.mk py/mkrules.mk: Add link to build troubleshooting on failure. 2022-09-15 12:22:18 +10:00
modarray.c all: Remove third argument to MP_REGISTER_MODULE. 2022-06-02 16:31:37 +10:00
modbuiltins.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
modcmath.c all: Remove third argument to MP_REGISTER_MODULE. 2022-06-02 16:31:37 +10:00
modcollections.c all: Remove third argument to MP_REGISTER_MODULE. 2022-06-02 16:31:37 +10:00
modgc.c all: Remove third argument to MP_REGISTER_MODULE. 2022-06-02 16:31:37 +10:00
modio.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
modmath.c all: Remove third argument to MP_REGISTER_MODULE. 2022-06-02 16:31:37 +10:00
modmicropython.c py/modmicropython: Make module optional. 2022-12-06 13:34:17 +11:00
modstruct.c py/objstr: Split mp_obj_str_from_vstr into bytes/str versions. 2022-08-26 16:43:55 +10:00
modsys.c py/modsys: Add support for sys.executable. 2022-10-11 18:10:26 +11:00
modthread.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
moduerrno.c all: Remove third argument to MP_REGISTER_MODULE. 2022-06-02 16:31:37 +10:00
mpconfig.h py/gc: Avoid valgrind false positives. 2022-12-08 14:29:22 +11:00
mperrno.h py/mperrno: Add MP_ECANCELED error code. 2021-06-24 23:14:01 +10:00
mphal.h all: Rename absolute time-based functions to include "epoch". 2020-09-18 17:20:34 +10:00
mpprint.c py/mpprint: Fix length calculation for strings with precision-modifier. 2020-12-07 23:32:06 +11:00
mpprint.h py/mpprint: Fix formatting typo with mp_print_ext_t struct name. 2022-08-10 14:30:47 +10:00
mpstate.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
mpstate.h py/gc: Reduce code size when MICROPY_GC_SPLIT_HEAP is disabled. 2022-07-23 00:43:08 +10:00
mpthread.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
mpz.c py/mpz: Fix bugs with bitwise of -0 by ensuring all 0's are positive. 2021-12-21 18:00:05 +11:00
mpz.h py/mpz: Fix bugs with bitwise of -0 by ensuring all 0's are positive. 2021-12-21 18:00:05 +11:00
nativeglue.c py/bc: Provide separate code-state setup funcs for bytecode and native. 2022-05-17 14:25:51 +10:00
nativeglue.h py/bc: Provide separate code-state setup funcs for bytecode and native. 2022-05-17 14:25:51 +10:00
nlr.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
nlr.h py/nlrmips: Add native NLR support for MIPS architecture. 2022-11-15 17:09:49 +11:00
nlraarch64.c py/nlraarch64: Add underscore prefix to function symbols for Darwin ABI. 2021-05-18 11:46:30 +10:00
nlrmips.c py/nlrmips: Add native NLR support for MIPS architecture. 2022-11-15 17:09:49 +11:00
nlrpowerpc.c py/nlrpowerpc: Fix generation of ppc64 code on ppc32 build. 2022-08-11 14:04:13 +10:00
nlrsetjmp.c py/nlr: Factor out common NLR code to macro and generic funcs in nlr.c. 2017-12-28 16:46:30 +11:00
nlrthumb.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
nlrx64.c py/nlrx64: Correct the detection of Darwin ABI. 2021-05-18 11:52:00 +10:00
nlrx86.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
nlrxtensa.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
obj.c py/obj: Merge getiter and iternext mp_obj_type_t slots. 2022-09-19 19:06:13 +10:00
obj.h py/obj: Add comments explaining the slot index scheme. 2022-10-26 00:08:41 +11:00
objarray.c py/objarray: Detect bytearray(str) without an encoding. 2022-11-08 23:09:22 +11:00
objarray.h py/objstr: Consolidate methods for str/bytes/bytearray/array. 2022-08-11 23:18:02 +10:00
objattrtuple.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objbool.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objboundmeth.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objcell.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objclosure.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objcomplex.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objdeque.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objdict.c py/objdict: Implement dictionary union (PEP 584). 2022-11-25 12:46:14 +11:00
objenumerate.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objexcept.c py/obj: Optimise code size and performance for make_new as a slot. 2022-09-19 19:06:16 +10:00
objexcept.h py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objfilter.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objfloat.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objfun.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objfun.h py: Rework bytecode and .mpy file format to be mostly static data. 2022-02-24 18:08:43 +11:00
objgenerator.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objgenerator.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
objgetitemiter.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objint.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objint.h py/modsys: Use consistent naming pattern for module-level const objects. 2020-05-28 10:02:14 +10:00
objint_longlong.c py/obj: Add static safety checks to mp_obj_is_type(). 2022-07-18 11:17:46 +10:00
objint_mpz.c py/obj: Add static safety checks to mp_obj_is_type(). 2022-07-18 11:17:46 +10:00
objlist.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objlist.h py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objmap.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objmodule.c py/objmodule: Add support for __dict__. 2022-09-19 23:22:46 +10:00
objmodule.h py/objmodule: Support delegating failed attr lookups. 2022-03-10 10:35:44 +11:00
objnamedtuple.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objnamedtuple.h py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objnone.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objobject.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objpolyiter.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objproperty.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objrange.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objreversed.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objset.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objsingleton.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objslice.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objstr.c py: Remove the word "yet" from exception messages. 2022-12-06 13:34:52 +11:00
objstr.h py/objstr: Add a helper to set mp_obj_str_t data. 2022-10-11 17:50:19 +11:00
objstringio.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objstringio.h py/objstringio: If created from immutable object, follow copy on write policy. 2017-06-09 17:33:01 +03:00
objstrunicode.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objtuple.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
objtuple.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
objtype.c py/obj: Optimise code size and performance for make_new as a slot. 2022-09-19 19:06:16 +10:00
objtype.h py/obj: Optimise code size and performance for make_new as a slot. 2022-09-19 19:06:16 +10:00
objzip.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
opmethods.c py/obj: Add accessors for type slots and use everywhere. 2022-09-19 19:06:07 +10:00
pairheap.c py/pairheap: Properly unlink node on pop and delete. 2020-03-26 01:21:04 +11:00
pairheap.h py/pairheap: Add helper function to initialise a new node. 2020-03-26 01:21:04 +11:00
parse.c py/parse: Allow const types other than int to optimise as true/false. 2022-09-23 16:04:13 +10:00
parse.h py/parse: Factor obj extract code to mp_parse_node_extract_const_object. 2022-04-14 22:44:56 +10:00
parsenum.c py/objstr: Optimise mp_obj_new_str_from_vstr for known-safe strings. 2022-08-26 16:44:35 +10:00
parsenum.h py/parsenum: Optimise when building with complex disabled. 2022-06-23 11:46:47 +10:00
parsenumbase.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
parsenumbase.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
persistentcode.c py: Pass in address to compiled module instead of returning it. 2022-12-08 12:27:23 +11:00
persistentcode.h py: Pass in address to compiled module instead of returning it. 2022-12-08 12:27:23 +11:00
profile.c py/obj: Convert make_new into a mp_obj_type_t slot. 2022-09-19 19:06:15 +10:00
profile.h py: Rework bytecode and .mpy file format to be mostly static data. 2022-02-24 18:08:43 +11:00
py.cmake py/nlrmips: Add native NLR support for MIPS architecture. 2022-11-15 17:09:49 +11:00
py.mk py/nlrmips: Add native NLR support for MIPS architecture. 2022-11-15 17:09:49 +11:00
pystack.c py: Introduce and use mp_raise_type_arg helper. 2021-07-15 00:12:41 +10:00
pystack.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
qstr.c py/qstr: Change qstr hash type from mp_uint_t to size_t. 2022-08-11 23:18:02 +10:00
qstr.h py/qstr: Change qstr hash type from mp_uint_t to size_t. 2022-08-11 23:18:02 +10:00
qstrdefs.h py/modsys: Add optional mutable attributes sys.ps1/ps2 and use them. 2022-03-10 10:58:33 +11:00
reader.c py: Include filename in errors from loading/saving files via "open". 2022-09-19 23:27:08 +10:00
reader.h py: Allow lexer to raise exceptions during construction. 2017-03-14 11:52:05 +11:00
repl.c shared/readline: Make tab insert an indent when it follows whitespace. 2022-04-22 17:00:16 +10:00
repl.h py/modsys: Add optional mutable attributes sys.ps1/ps2 and use them. 2022-03-10 10:58:33 +11:00
ringbuf.c py/ringbuf: Add peek16 method. 2019-11-21 12:04:53 +11:00
ringbuf.h extmod/modbluetooth: Make modbluetooth event not a bitfield. 2020-06-05 14:04:20 +10:00
runtime.c py/runtime: Add mp_raise_OSError_with_filename helper function. 2022-09-19 23:25:26 +10:00
runtime.h py/runtime: Add mp_raise_OSError_with_filename helper function. 2022-09-19 23:25:26 +10:00
runtime0.h py/obj: Add support for __float__ and __complex__ functions. 2022-07-25 14:23:34 +10:00
runtime_utils.c py: mp_call_function_*_protected(): Pass-thru return value if possible. 2017-12-05 00:38:41 +02:00
scheduler.c py/scheduler: Use MP_REGISTER_ROOT_POINTER(). 2022-07-18 13:52:01 +10:00
scope.c py: Rework bytecode and .mpy file format to be mostly static data. 2022-02-24 18:08:43 +11:00
scope.h py/emitcommon: Don't implicitly close class vars that are assigned to. 2022-05-03 16:38:43 +10:00
sequence.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
showbc.c py: Change jump-if-x-or-pop opcodes to have unsigned offset argument. 2022-03-28 15:43:09 +11:00
smallint.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
smallint.h py/smallint: Introduce MP_SMALL_INT_BITS macro. 2022-03-25 12:23:43 +11:00
stackctrl.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
stackctrl.h py/stackctrl: Prevent unused-var warning when stack checking disabled. 2021-06-05 11:03:09 +10:00
stream.c py/obj: Add accessors for type slots and use everywhere. 2022-09-19 19:06:07 +10:00
stream.h py/obj: Add accessors for type slots and use everywhere. 2022-09-19 19:06:07 +10:00
unicode.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
unicode.h py/objstr: Add check for valid UTF-8 when making a str from bytes. 2017-09-06 16:43:09 +10:00
usermod.cmake rp2: Add support for USER_C_MODULES to CMake build system. 2021-03-31 00:26:01 +11:00
vm.c py/vm: Consistently indent #if guards to match the code they surround. 2022-07-12 22:48:55 +10:00
vmentrytable.h py/vmentrytable: Ignore GCC -Woverride-init. 2020-10-22 11:47:36 +02:00
vstr.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
warning.c py: Update my copyright info on some files. 2019-02-06 00:19:00 +11:00