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commit 2d7d545c4c4bfce7fdcbcbe9baaeb437915742f0
Merge: 625a1249 b178914b
Author: Yukihiro "Matz" Matsumoto <matz@ruby.or.jp>
Date:   Fri Jun 5 14:35:13 2020 +0900

    Merge branch 'fix-mrb_open-with-nomem' of https://github.com/dearblue/mruby into dearblue-fix-mrb_open-with-nomem

commit b178914b11
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sat Jan 19 22:22:44 2019 +0900

    Fix invalid pointer free inside other heap's block

     1. `e = mrb_obj_alloc(...)`
     2. `e->stack = mrb->c->stack` (`mrb->c->stack` is anywhere in the range `stbase...stend`)
     3. And raised exception by `mrb_malloc()`!
     4. `mrb_free(e->stack)` by GC part (wrong free)

commit 52e3d5d858
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sat Jan 19 21:55:36 2019 +0900

    Fix memory leak for temporary symbols when out of memory

commit 4c5499b88e
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 11:42:07 2019 +0900

    Fix uninitialized pointer dereference for debug section

commit 8e993167de
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 11:41:09 2019 +0900

    Fix memory leak for temporary filenames when out of memory

commit 8b422577e6
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 10:57:51 2019 +0900

    Fix memory leak for irep when out of memory

commit 6b35ebf49a
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 10:55:50 2019 +0900

    Fix uninitialized pointer dereference when do not finished initializing irep

commit 2531f2631e
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 10:48:15 2019 +0900

    Fix NULL pointer dereference when do not finished initializing irep

commit e2d6896eba
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sat Jan 19 12:54:19 2019 +0900

    Fix memory leak for irep when out of memory by `mrb_proc_new()`

commit b6214ff8a0
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sat Jan 19 12:53:07 2019 +0900

    Fix memory leak for `khash_t` in `kh_init_size()` when out of memory by `kh_alloc()`

commit 19162dd6c1
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 02:15:07 2019 +0900

    Fix memory leak for symbol string when out of memory in `kh_put()`

commit 15e67297ff
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 02:12:24 2019 +0900

    Fix keep wrong symbol index when out of memory

commit 3f8e2b3752
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 02:08:13 2019 +0900

    Fix keep wrong symbol capacity when out of memory

commit a3cfe755ab
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sat Jan 19 10:11:37 2019 +0900

    Fix NULL pointer dereference `mrb->c` by `mark_context()`

commit d9c7b6be6e
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 15:25:09 2019 +0900

    Fix protect exception for print error message

commit 100642750e
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 11:59:02 2019 +0900

    Protect exception for mruby core initialization

commit 7a0418304e
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Fri Jan 18 20:38:27 2019 +0900

    Fix memory leak for string object when out of memory

    The `mrb_str_pool()` function has a path to call `malloc()` twice.

    If occurs `NoMemoryError` exception in second `malloc()`,
    first `malloc()` pointer is not freed.

commit fef1c152ce
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sat Jan 19 13:05:09 2019 +0900

    Fix stack overflow when out of memory

    As a result of this change, no backtrace information is set
    for NoMemoryError (`mrb->nomem_err`).

    Detailes:

    When generating a backtrace, called `mrb_intern_lit()`,
    `mrb_str_new_cstr()` and `mrb_obj_iv_set()` function with
    `exc_debug_info()` function in `src/error.c`.

    If a `NoMemoryError` exception occurs at this time,
    the `exc_debug_info()` function will be called again,
    and in the same way `NoMemoryError` exception raised will result
    in an infinite loop to occurs stack overflow (and SIGSEGV).

commit da7d7f881b
Author: dearblue <dearblue@users.noreply.github.com>
Date:   Sun Jan 20 12:00:38 2019 +0900

    Fix NULL pointer dereference `mrb->nomem_err` when not initialized

    Add internal functions (not `static`):

      * `mrb_raise_nomemory()`
      * `mrb_core_init_abort()`
This commit is contained in:
Yukihiro "Matz" Matsumoto
2020-06-05 14:38:56 +09:00
parent 00f6271e3b
commit f1523d2404
9 changed files with 236 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/mruby/khash.h
+23 -5
View File
@@ -73,6 +73,7 @@ static const uint8_t __m_either[] = {0x03, 0x0c, 0x30, 0xc0};
void kh_clear_##name(mrb_state *mrb, kh_##name##_t *h); \
khint_t kh_get_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key); \
khint_t kh_put_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key, int *ret); \
void kh_put_prepare_##name(mrb_state *mrb, kh_##name##_t *h); \
void kh_resize_##name(mrb_state *mrb, kh_##name##_t *h, khint_t new_n_buckets); \
void kh_del_##name(mrb_state *mrb, kh_##name##_t *h, khint_t x); \
kh_##name##_t *kh_copy_##name(mrb_state *mrb, kh_##name##_t *h);
@@ -95,16 +96,25 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
__hash_equal: hash comparation function
*/
#define KHASH_DEFINE(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
void kh_alloc_##name(mrb_state *mrb, kh_##name##_t *h) \
mrb_noreturn void mrb_raise_nomemory(mrb_state *mrb); \
int kh_alloc_simple_##name(mrb_state *mrb, kh_##name##_t *h) \
{ \
khint_t sz = h->n_buckets; \
size_t len = sizeof(khkey_t) + (kh_is_map ? sizeof(khval_t) : 0); \
uint8_t *p = (uint8_t*)mrb_malloc(mrb, sizeof(uint8_t)*sz/4+len*sz); \
uint8_t *p = (uint8_t*)mrb_malloc_simple(mrb, sizeof(uint8_t)*sz/4+len*sz); \
if (!p) { return 1; } \
h->size = h->n_occupied = 0; \
h->keys = (khkey_t *)p; \
h->vals = kh_is_map ? (khval_t *)(p+sizeof(khkey_t)*sz) : NULL; \
h->ed_flags = p+len*sz; \
kh_fill_flags(h->ed_flags, 0xaa, sz/4); \
return 0; \
} \
void kh_alloc_##name(mrb_state *mrb, kh_##name##_t *h) \
{ \
if (kh_alloc_simple_##name(mrb, h)) { \
mrb_raise_nomemory(mrb); \
} \
} \
kh_##name##_t *kh_init_##name##_size(mrb_state *mrb, khint_t size) { \
kh_##name##_t *h = (kh_##name##_t*)mrb_calloc(mrb, 1, sizeof(kh_##name##_t)); \
@@ -112,7 +122,10 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
size = KHASH_MIN_SIZE; \
khash_power2(size); \
h->n_buckets = size; \
kh_alloc_##name(mrb, h); \
if (kh_alloc_simple_##name(mrb, h)) { \
mrb_free(mrb, h); \
mrb_raise_nomemory(mrb); \
} \
return h; \
} \
kh_##name##_t *kh_init_##name(mrb_state *mrb) { \
@@ -171,12 +184,16 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
mrb_free(mrb, old_keys); \
} \
} \
khint_t kh_put_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key, int *ret) \
void kh_put_prepare_##name(mrb_state *mrb, kh_##name##_t *h) \
{ \
khint_t k, del_k, step = 0; \
if (h->n_occupied >= khash_upper_bound(h)) { \
kh_resize_##name(mrb, h, h->n_buckets*2); \
} \
} \
khint_t kh_put_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key, int *ret) \
{ \
khint_t k, del_k, step = 0; \
kh_put_prepare_##name(mrb, h); \
k = __hash_func(mrb,key) & khash_mask(h); \
del_k = kh_end(h); \
while (!__ac_isempty(h->ed_flags, k)) { \
@@ -239,6 +256,7 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
#define kh_destroy(name, mrb, h) kh_destroy_##name(mrb, h)
#define kh_clear(name, mrb, h) kh_clear_##name(mrb, h)
#define kh_resize(name, mrb, h, s) kh_resize_##name(mrb, h, s)
#define kh_put_prepare(name, mrb, h) kh_put_prepare_##name(mrb, h)
#define kh_put(name, mrb, h, k) kh_put_##name(mrb, h, k, NULL)
#define kh_put2(name, mrb, h, k, r) kh_put_##name(mrb, h, k, r)
#define kh_get(name, mrb, h, k) kh_get_##name(mrb, h, k)