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author | markj <markj@FreeBSD.org> | 2015-11-13 01:25:02 +0000 |
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committer | markj <markj@FreeBSD.org> | 2015-11-13 01:25:02 +0000 |
commit | 2f7340b2834385328346377b624f6b4694749e02 (patch) | |
tree | 2a2a782ffe9d046159e584960af9c59b0fccd7f6 /sys/kern | |
parent | 63e6b748374f5613b5b76e9beb6bceb75df45323 (diff) | |
download | FreeBSD-src-2f7340b2834385328346377b624f6b4694749e02.zip FreeBSD-src-2f7340b2834385328346377b624f6b4694749e02.tar.gz |
MFC r290320:
Have elf_lookup() return an error if the specified non-weak symbol could
not be found. Otherwise, relocations against such symbols will be silently
ignored instead of causing an error to be raised.
Diffstat (limited to 'sys/kern')
-rw-r--r-- | sys/kern/link_elf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/kern/link_elf.c b/sys/kern/link_elf.c index b4f6586..3b03d6f 100644 --- a/sys/kern/link_elf.c +++ b/sys/kern/link_elf.c @@ -1544,6 +1544,10 @@ elf_lookup(linker_file_t lf, Elf_Size symidx, int deps, Elf_Addr *res) } addr = ((Elf_Addr)linker_file_lookup_symbol(lf, symbol, deps)); + if (addr == 0 && ELF_ST_BIND(sym->st_info) != STB_WEAK) { + *res = 0; + return (EINVAL); + } if (elf_set_find(&set_pcpu_list, addr, &start, &base)) addr = addr - start + base; |