From: Vasily Gorbik gor@linux.ibm.com
stable inclusion from stable-v5.10.133 commit fbf60f83e241f0ef967644ca06455f37fcea064b category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5PTAS CVE: CVE-2022-29900,CVE-2022-23816,CVE-2022-29901
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 46c7405df7de8deb97229eacebcee96d61415f3f upstream.
Currently x86 cross-compilation fails on big endian system with:
x86_64-cross-ld: init/main.o: invalid string offset 488112128 >= 6229 for section `.strtab'
Mark new ELF data in elf_create_undef_symbol() as symbol, so that libelf does endianness handling correctly.
Fixes: 2f2f7e47f052 ("objtool: Add elf_create_undef_symbol()") Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Ingo Molnar mingo@kernel.org Acked-by: Peter Zijlstra a.p.zijlstra@chello.nl Link: https://lore.kernel.org/r/patch-1.thread-6c9df9.git-d39264656387.your-ad-her... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Lin Yujun linyujun809@huawei.com Reviewed-by: Zhang Jianhua chris.zjh@huawei.com --- tools/objtool/elf.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index 74f4b3bb7961..de6e42040d75 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -758,6 +758,7 @@ static int elf_add_string(struct elf *elf, struct section *strtab, char *str) data->d_buf = str; data->d_size = strlen(str) + 1; data->d_align = 1; + data->d_type = ELF_T_SYM;
len = strtab->len; strtab->len += data->d_size;