[PATCH] arm64/module-plts: Consider the special case where plt_max_entries is 0

Peng Hao
2020-07-07T11:48:10Z

If plt_max_entries is 0, a warning is triggered.
WARNING: CPU: 200 PID: 3000 at arch/arm64/kernel/module-plts.c:97 module_emit_plt_entry+0xa4/0x150

Signed-off-by: Peng Hao <richard.peng@oppo.com>
---
arch/arm64/kernel/module-plts.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/module-plts.c b/arch/arm64/kernel/module-plts.c
index 65b08a74aec6..1868c9ac13f2 100644
--- a/arch/arm64/kernel/module-plts.c
+++ b/arch/arm64/kernel/module-plts.c
@@ -79,7 +79,8 @@ u64 module_emit_plt_entry(struct module *mod, Elf64_Shdr *sechdrs,
int i = pltsec->plt_num_entries;
int j = i - 1;
u64 val = sym->st_value + rela->r_addend;
-
+ if (pltsec->plt_max_entries == 0)
+ return 0;
if (is_forbidden_offset_for_adrp(&plt[i].adrp))
i++;

--
2.18.4