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GET /api/patches/2217996/?format=api
{ "id": 2217996, "url": "http://patchwork.ozlabs.org/api/patches/2217996/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/patch/20260331082631.217802-1-marocketbd@gmail.com/", "project": { "id": 41, "url": "http://patchwork.ozlabs.org/api/projects/41/?format=api", "name": "GNU C Library", "link_name": "glibc", "list_id": "libc-alpha.sourceware.org", "list_email": "libc-alpha@sourceware.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260331082631.217802-1-marocketbd@gmail.com>", "list_archive_url": null, "date": "2026-03-31T08:26:31", "name": "malloc: free original oldmem with tcache in realloc", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "4d189cb2ba7bee0fe66feb007e124fab90636f71", "submitter": { "id": 92898, "url": "http://patchwork.ozlabs.org/api/people/92898/?format=api", "name": "Rocket Ma", "email": "marocketbd@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/glibc/patch/20260331082631.217802-1-marocketbd@gmail.com/mbox/", "series": [ { "id": 498143, "url": "http://patchwork.ozlabs.org/api/series/498143/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/list/?series=498143", "date": "2026-03-31T08:26:31", "name": "malloc: free original oldmem with tcache in realloc", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498143/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217996/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217996/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "libc-alpha@sourceware.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "libc-alpha@sourceware.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=WN8a7uGP;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org\n (client-ip=2620:52:6:3111::32; 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In commit cd335350,\nall chunks released in realloc is directly put into bins for\nperformance. For remainder ones, it's OK, since user never allocate\nthese manually; though if the chunk grows instead of shrinks, the chunk\nto free is allocated by user some time ago. These chunks requested by\nuser should be put in tcache if available.\n\nSigned-off-by: Rocket Ma <marocketbd@gmail.com>\n---\n malloc/malloc.c | 5 ++---\n 1 file changed, 2 insertions(+), 3 deletions(-)", "diff": "diff --git a/malloc/malloc.c b/malloc/malloc.c\nindex 6455a1b0e0..503e981271 100644\n--- a/malloc/malloc.c\n+++ b/malloc/malloc.c\n@@ -3471,8 +3471,7 @@ __libc_realloc (void *oldmem, size_t bytes)\n {\n \t size_t sz = memsize (oldp);\n \t memcpy (newp, oldmem, sz);\n-\t (void) tag_region (chunk2mem (oldp), sz);\n- _int_free_chunk (ar_ptr, oldp, chunksize (oldp), 0);\n+\t __libc_free (oldmem);\n }\n }\n \n@@ -4549,7 +4548,7 @@ _int_realloc (mstate av, mchunkptr oldp, INTERNAL_SIZE_T oldsize,\n \t (void) tag_region (oldmem, sz);\n \t newmem = tag_new_usable (newmem);\n \t memcpy (newmem, oldmem, sz);\n-\t _int_free_chunk (av, oldp, chunksize (oldp), 1);\n+\t __libc_free (oldmem);\n \t check_inuse_chunk (av, newp);\n \t return newmem;\n }\n", "prefixes": [] }