diff options
author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 14:32:06 +0100 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 14:32:06 +0100 |
commit | 32aca03c2ce868d3412da0bb6ce6798c7bea357e (patch) | |
tree | 01630dc4a6935df99bf7d11d34ff8d384fed86e2 /tools/objtool/elf.c | |
parent | cfbbc7703fff59c67761c93a8b1de29a79f9841c (diff) | |
parent | 60771fc402877163d07569addadcf18b86acb455 (diff) |
Merge tag 'v4.9.166' into 4.9-2.3.x-imx
This is the 4.9.166 stable release
Diffstat (limited to 'tools/objtool/elf.c')
-rw-r--r-- | tools/objtool/elf.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index 0d1acb704f64..dd4ed7c3c062 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -31,6 +31,8 @@ #include "elf.h" #include "warn.h" +#define MAX_NAME_LEN 128 + struct section *find_section_by_name(struct elf *elf, const char *name) { struct section *sec; @@ -298,6 +300,8 @@ static int read_symbols(struct elf *elf) /* Create parent/child links for any cold subfunctions */ list_for_each_entry(sec, &elf->sections, list) { list_for_each_entry(sym, &sec->symbol_list, list) { + char pname[MAX_NAME_LEN + 1]; + size_t pnamelen; if (sym->type != STT_FUNC) continue; sym->pfunc = sym->cfunc = sym; @@ -305,14 +309,21 @@ static int read_symbols(struct elf *elf) if (!coldstr) continue; - coldstr[0] = '\0'; - pfunc = find_symbol_by_name(elf, sym->name); - coldstr[0] = '.'; + pnamelen = coldstr - sym->name; + if (pnamelen > MAX_NAME_LEN) { + WARN("%s(): parent function name exceeds maximum length of %d characters", + sym->name, MAX_NAME_LEN); + return -1; + } + + strncpy(pname, sym->name, pnamelen); + pname[pnamelen] = '\0'; + pfunc = find_symbol_by_name(elf, pname); if (!pfunc) { WARN("%s(): can't find parent function", sym->name); - goto err; + return -1; } sym->pfunc = pfunc; |