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annotate src/core/ngx_slab.h @ 5418:6961d52ebc49 stable-1.4

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Core: fix misallocation at ngx_crypt_apr1 (ticket #412). Found by using auth_basic.t from mdounin nginx-tests under valgrind. ==10470== Invalid write of size 1 ==10470== at 0x43603D: ngx_crypt_to64 (ngx_crypt.c:168) ==10470== by 0x43648E: ngx_crypt (ngx_crypt.c:153) ==10470== by 0x489D8B: ngx_http_auth_basic_crypt_handler (ngx_http_auth_basic_module.c:297) ==10470== by 0x48A24A: ngx_http_auth_basic_handler (ngx_http_auth_basic_module.c:240) ==10470== by 0x44EAB9: ngx_http_core_access_phase (ngx_http_core_module.c:1121) ==10470== by 0x44A822: ngx_http_core_run_phases (ngx_http_core_module.c:895) ==10470== by 0x44A932: ngx_http_handler (ngx_http_core_module.c:878) ==10470== by 0x455EEF: ngx_http_process_request (ngx_http_request.c:1852) ==10470== by 0x456527: ngx_http_process_request_headers (ngx_http_request.c:1283) ==10470== by 0x456A91: ngx_http_process_request_line (ngx_http_request.c:964) ==10470== by 0x457097: ngx_http_wait_request_handler (ngx_http_request.c:486) ==10470== by 0x4411EE: ngx_epoll_process_events (ngx_epoll_module.c:691) ==10470== Address 0x5866fab is 0 bytes after a block of size 27 alloc'd ==10470== at 0x4A074CD: malloc (vg_replace_malloc.c:236) ==10470== by 0x43B251: ngx_alloc (ngx_alloc.c:22) ==10470== by 0x421B0D: ngx_malloc (ngx_palloc.c:119) ==10470== by 0x421B65: ngx_pnalloc (ngx_palloc.c:147) ==10470== by 0x436368: ngx_crypt (ngx_crypt.c:140) ==10470== by 0x489D8B: ngx_http_auth_basic_crypt_handler (ngx_http_auth_basic_module.c:297) ==10470== by 0x48A24A: ngx_http_auth_basic_handler (ngx_http_auth_basic_module.c:240) ==10470== by 0x44EAB9: ngx_http_core_access_phase (ngx_http_core_module.c:1121) ==10470== by 0x44A822: ngx_http_core_run_phases (ngx_http_core_module.c:895) ==10470== by 0x44A932: ngx_http_handler (ngx_http_core_module.c:878) ==10470== by 0x455EEF: ngx_http_process_request (ngx_http_request.c:1852) ==10470== by 0x456527: ngx_http_process_request_headers (ngx_http_request.c:1283) ==10470==
author Markus Linnala <Markus.Linnala@cybercom.com>
date Fri, 20 Sep 2013 17:57:21 +0300
parents d620f497c50f
children 5024d29354f1
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_SLAB_H_INCLUDED_
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9 #define _NGX_SLAB_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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16 typedef struct ngx_slab_page_s ngx_slab_page_t;
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18 struct ngx_slab_page_s {
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19 uintptr_t slab;
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20 ngx_slab_page_t *next;
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21 uintptr_t prev;
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22 };
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25 typedef struct {
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26 ngx_shmtx_sh_t lock;
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27
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28 size_t min_size;
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29 size_t min_shift;
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31 ngx_slab_page_t *pages;
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32 ngx_slab_page_t free;
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34 u_char *start;
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35 u_char *end;
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36
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37 ngx_shmtx_t mutex;
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39 u_char *log_ctx;
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40 u_char zero;
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42 void *data;
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43 void *addr;
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44 } ngx_slab_pool_t;
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47 void ngx_slab_init(ngx_slab_pool_t *pool);
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48 void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size);
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49 void *ngx_slab_alloc_locked(ngx_slab_pool_t *pool, size_t size);
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50 void ngx_slab_free(ngx_slab_pool_t *pool, void *p);
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51 void ngx_slab_free_locked(ngx_slab_pool_t *pool, void *p);
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54 #endif /* _NGX_SLAB_H_INCLUDED_ */