Date: Sat, 12 Mar 2016 17:23:16 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r296729 - stable/10/sys/kern Message-ID: <201603121723.u2CHNG5A041700@repo.freebsd.org>
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Author: kib Date: Sat Mar 12 17:23:15 2016 New Revision: 296729 URL: https://svnweb.freebsd.org/changeset/base/296729 Log: MFC r295489: Remove useless checks for NULL before calling free(9), in the kernel elf linkers. Modified: stable/10/sys/kern/link_elf.c stable/10/sys/kern/link_elf_obj.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/kern/link_elf.c ============================================================================== --- stable/10/sys/kern/link_elf.c Sat Mar 12 17:17:34 2016 (r296728) +++ stable/10/sys/kern/link_elf.c Sat Mar 12 17:23:15 2016 (r296729) @@ -1027,10 +1027,8 @@ out: vn_close(nd.ni_vp, FREAD, td->td_ucred, td); if (error != 0 && lf != NULL) linker_file_unload(lf, LINKER_UNLOAD_FORCE); - if (shdr != NULL) - free(shdr, M_LINKER); - if (firstpage != NULL) - free(firstpage, M_LINKER); + free(shdr, M_LINKER); + free(firstpage, M_LINKER); return (error); } @@ -1092,19 +1090,13 @@ link_elf_unload_file(linker_file_t file) + (ef->object->size << PAGE_SHIFT)); } #else - if (ef->address != NULL) - free(ef->address, M_LINKER); + free(ef->address, M_LINKER); #endif - if (ef->symbase != NULL) - free(ef->symbase, M_LINKER); - if (ef->strbase != NULL) - free(ef->strbase, M_LINKER); - if (ef->ctftab != NULL) - free(ef->ctftab, M_LINKER); - if (ef->ctfoff != NULL) - free(ef->ctfoff, M_LINKER); - if (ef->typoff != NULL) - free(ef->typoff, M_LINKER); + free(ef->symbase, M_LINKER); + free(ef->strbase, M_LINKER); + free(ef->ctftab, M_LINKER); + free(ef->ctfoff, M_LINKER); + free(ef->typoff, M_LINKER); } static void Modified: stable/10/sys/kern/link_elf_obj.c ============================================================================== --- stable/10/sys/kern/link_elf_obj.c Sat Mar 12 17:17:34 2016 (r296728) +++ stable/10/sys/kern/link_elf_obj.c Sat Mar 12 17:23:15 2016 (r296729) @@ -896,8 +896,7 @@ out: vn_close(nd.ni_vp, FREAD, td->td_ucred, td); if (error && lf) linker_file_unload(lf, LINKER_UNLOAD_FORCE); - if (hdr) - free(hdr, M_LINKER); + free(hdr, M_LINKER); return error; } @@ -928,18 +927,12 @@ link_elf_unload_file(linker_file_t file) } } if (ef->preloaded) { - if (ef->reltab) - free(ef->reltab, M_LINKER); - if (ef->relatab) - free(ef->relatab, M_LINKER); - if (ef->progtab) - free(ef->progtab, M_LINKER); - if (ef->ctftab) - free(ef->ctftab, M_LINKER); - if (ef->ctfoff) - free(ef->ctfoff, M_LINKER); - if (ef->typoff) - free(ef->typoff, M_LINKER); + free(ef->reltab, M_LINKER); + free(ef->relatab, M_LINKER); + free(ef->progtab, M_LINKER); + free(ef->ctftab, M_LINKER); + free(ef->ctfoff, M_LINKER); + free(ef->typoff, M_LINKER); if (file->filename != NULL) preload_delete_name(file->filename); /* XXX reclaim module memory? */ @@ -947,37 +940,25 @@ link_elf_unload_file(linker_file_t file) } for (i = 0; i < ef->nreltab; i++) - if (ef->reltab[i].rel) - free(ef->reltab[i].rel, M_LINKER); + free(ef->reltab[i].rel, M_LINKER); for (i = 0; i < ef->nrelatab; i++) - if (ef->relatab[i].rela) - free(ef->relatab[i].rela, M_LINKER); - if (ef->reltab) - free(ef->reltab, M_LINKER); - if (ef->relatab) - free(ef->relatab, M_LINKER); - if (ef->progtab) - free(ef->progtab, M_LINKER); + free(ef->relatab[i].rela, M_LINKER); + free(ef->reltab, M_LINKER); + free(ef->relatab, M_LINKER); + free(ef->progtab, M_LINKER); if (ef->object) { vm_map_remove(kernel_map, (vm_offset_t) ef->address, (vm_offset_t) ef->address + (ef->object->size << PAGE_SHIFT)); } - if (ef->e_shdr) - free(ef->e_shdr, M_LINKER); - if (ef->ddbsymtab) - free(ef->ddbsymtab, M_LINKER); - if (ef->ddbstrtab) - free(ef->ddbstrtab, M_LINKER); - if (ef->shstrtab) - free(ef->shstrtab, M_LINKER); - if (ef->ctftab) - free(ef->ctftab, M_LINKER); - if (ef->ctfoff) - free(ef->ctfoff, M_LINKER); - if (ef->typoff) - free(ef->typoff, M_LINKER); + free(ef->e_shdr, M_LINKER); + free(ef->ddbsymtab, M_LINKER); + free(ef->ddbstrtab, M_LINKER); + free(ef->shstrtab, M_LINKER); + free(ef->ctftab, M_LINKER); + free(ef->ctfoff, M_LINKER); + free(ef->typoff, M_LINKER); } static const char *
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