Bug 93151 - _csi_intern_string _csi_perm_alloc invalid free()
Summary: _csi_intern_string _csi_perm_alloc invalid free()
Alias: None
Product: cairo
Classification: Unclassified
Component: general (show other bugs)
Version: unspecified
Hardware: Other All
: medium major
Assignee: Chris Wilson
QA Contact: cairo-bugs mailing list
Depends on:
Reported: 2015-11-28 23:14 UTC by Sami Farin
Modified: 2018-08-25 13:26 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Description Sami Farin 2015-11-28 23:14:23 UTC

    if (istring == NULL) {
        istring = _csi_perm_alloc (ctx,
                                   sizeof (csi_intern_string_t) + len + 1);

_csi_perm_alloc is where the fun happens! (cleaned up a bit)
    csi_chunk_t *chunk = _csi_alloc (ctx, sizeof (csi_chunk_t) + chunk_size);
    chunk->ptr = (char *) (chunk + 1);
    ptr = chunk->ptr;
    return ptr;

in _csi_intern_string , if _csi_hash_table_insert fails:
    _csi_free (ctx, istring);

so basically it does malloc(something) and free(something + sizeof(csi_chunk_t)).
Comment 1 Sami Farin 2015-11-29 12:31:48 UTC
I meant to say free(malloc(something) + sizeof(csi_chunk_t))
Comment 2 GitLab Migration User 2018-08-25 13:26:14 UTC
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