[PATCH] arm64: take SHN_LIVEPATCH syms into account when calculating plt_max_entries
From: Jessica Yu
Date: Tue Jul 12 2016 - 20:11:42 EST
SHN_LIVEPATCH symbols are technically a subset of SHN_UNDEF/undefined
symbols, except that their addresses are resolved by livepatch at runtime.
Therefore, when calculating the upper-bound for the number of plt entries
to allocate, make sure to take livepatch symbols into account as well.
Signed-off-by: Jessica Yu <jeyu@xxxxxxxxxx>
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 1ce90d8..1e95dc1 100644
@@ -122,7 +122,8 @@ static unsigned int count_plts(Elf64_Sym *syms, Elf64_Rela *rela, int num)
* as well, so modules can never grow beyond that limit.
s = syms + ELF64_R_SYM(rela[i].r_info);
- if (s->st_shndx != SHN_UNDEF)
+ if (s->st_shndx != SHN_UNDEF &&
+ s->st_shndx != SHN_LIVEPATCH)