[ Upstream commit
b84fc2e0139ba4b23b8039bd7cfd242894fe8f8b ]
Ensure sym_tab and sym_names are zero-initialized and add an early-out
condition in the unlikely (erroneous) case that the enclave ELF file would
not contain a symbol table.
This addresses -Werror=maybe-uninitialized compiler warnings for gcc -O2.
Fixes:
33c5aac3bf32 ("selftests/sgx: Test complete changing of page type flow")
Signed-off-by: Jo Van Bulck <jo.vanbulck@cs.kuleuven.be>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/all/20231005153854.25566-3-jo.vanbulck%40cs.kuleuven.be
Signed-off-by: Sasha Levin <sashal@kernel.org>
*/
uint64_t encl_get_entry(struct encl *encl, const char *symbol)
{
+ Elf64_Sym *symtab = NULL;
+ char *sym_names = NULL;
Elf64_Shdr *sections;
- Elf64_Sym *symtab;
Elf64_Ehdr *ehdr;
- char *sym_names;
- int num_sym;
+ int num_sym = 0;
int i;
ehdr = encl->bin;
}
}
+ if (!symtab || !sym_names)
+ return 0;
+
for (i = 0; i < num_sym; i++) {
Elf64_Sym *sym = &symtab[i];