Date: Mon, 20 Mar 2023 13:33:44 GMT From: Mark Johnston <markj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 440dbf8a4b7a - stable/13 - readelf: fix -wR option, memory leaks, and -wf minor bug Message-ID: <202303201333.32KDXiYT073614@gitrepo.freebsd.org>
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The branch stable/13 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=440dbf8a4b7a983e3b93f5e357700093117b6b32 commit 440dbf8a4b7a983e3b93f5e357700093117b6b32 Author: Christos Margiolis <christos@FreeBSD.org> AuthorDate: 2023-03-06 17:50:13 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2023-03-20 12:52:57 +0000 readelf: fix -wR option, memory leaks, and -wf minor bug Reviewed by: markj MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D38419 (cherry picked from commit cec2d0b1c7ac3196613813c0b07a2387916a8ccd) --- contrib/elftoolchain/readelf/readelf.c | 39 ++++++++++++++++++++++------------ 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/contrib/elftoolchain/readelf/readelf.c b/contrib/elftoolchain/readelf/readelf.c index 77125b77ebef..daaa7bf62dff 100644 --- a/contrib/elftoolchain/readelf/readelf.c +++ b/contrib/elftoolchain/readelf/readelf.c @@ -4938,8 +4938,10 @@ dump_dwarf_line(struct readelf *re) return; } if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, - &de) != DW_DLV_OK) + &de) != DW_DLV_OK) { + dwarf_dealloc(re->dbg, die, DW_DLA_DIE); continue; + } length = re->dw_read(d, &offset, 4); if (length == 0xffffffff) { @@ -4950,6 +4952,7 @@ dump_dwarf_line(struct readelf *re) if (length > d->d_size - offset) { warnx("invalid .dwarf_line section"); + dwarf_dealloc(re->dbg, die, DW_DLA_DIE); continue; } @@ -5147,9 +5150,8 @@ dump_dwarf_line(struct readelf *re) (uintmax_t) line); p++; } - - } + dwarf_dealloc(re->dbg, die, DW_DLA_DIE); } if (ret == DW_DLV_ERROR) warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); @@ -5192,9 +5194,9 @@ dump_dwarf_line_decoded(struct readelf *re) printf("%-37s %11s %s\n", "Filename", "Line Number", "Starting Address"); if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) - continue; + goto done; if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) - continue; + goto done; for (i = 0; i < linecount; i++) { ln = linebuf[i]; if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) @@ -5208,6 +5210,8 @@ dump_dwarf_line_decoded(struct readelf *re) (uintmax_t) lineaddr); } putchar('\n'); +done: + dwarf_dealloc(re->dbg, die, DW_DLA_DIE); } } @@ -5840,7 +5844,8 @@ dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) Dwarf_Addr base0; Dwarf_Half attr; Dwarf_Signed attr_count, cnt; - Dwarf_Unsigned off, bytecnt; + Dwarf_Unsigned bytecnt; + Dwarf_Off off; int i, j, ret; if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != @@ -5857,11 +5862,12 @@ dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) } if (attr != DW_AT_ranges) continue; - if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { - warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); + if (dwarf_global_formref(attr_list[i], &off, &de) != DW_DLV_OK) { + warnx("dwarf_global_formref failed: %s", + dwarf_errmsg(de)); continue; } - if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, + if (dwarf_get_ranges(re->dbg, off, &ranges, &cnt, &bytecnt, &de) != DW_DLV_OK) continue; base0 = base; @@ -5900,6 +5906,8 @@ cont_search: warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); else if (ret == DW_DLV_OK) dump_dwarf_ranges_foreach(re, ret_die, base); + + dwarf_dealloc(re->dbg, die, DW_DLA_DIE); } static void @@ -6204,7 +6212,7 @@ dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) Dwarf_Small cie_version; Dwarf_Ptr fde_addr, fde_inst, cie_inst; char *cie_aug, c; - int i, eh_frame; + int i, ret, eh_frame; Dwarf_Error de; printf("\nThe section %s contains:\n\n", s->name); @@ -6219,10 +6227,13 @@ dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) } } else if (!strcmp(s->name, ".eh_frame")) { eh_frame = 1; - if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, - &fde_list, &fde_count, &de) != DW_DLV_OK) { - warnx("dwarf_get_fde_list_eh failed: %s", - dwarf_errmsg(de)); + ret = dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, + &fde_list, &fde_count, &de); + if (ret != DW_DLV_OK) { + if (ret == DW_DLV_ERROR) { + warnx("dwarf_get_fde_list_eh failed: %s", + dwarf_errmsg(de)); + } return; } } else
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