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-rw-r--r--fs/binfmt_elf_fdpic.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index f3e72c5c19f5..70cfc4b84ae0 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -972,9 +972,12 @@ static int elf_fdpic_map_file_constdisp_on_uclinux(
params->elfhdr_addr = seg->addr;
/* clear any space allocated but not loaded */
- if (phdr->p_filesz < phdr->p_memsz)
- clear_user((void *) (seg->addr + phdr->p_filesz),
- phdr->p_memsz - phdr->p_filesz);
+ if (phdr->p_filesz < phdr->p_memsz) {
+ ret = clear_user((void *) (seg->addr + phdr->p_filesz),
+ phdr->p_memsz - phdr->p_filesz);
+ if (ret)
+ return ret;
+ }
if (mm) {
if (phdr->p_flags & PF_X) {
@@ -1014,7 +1017,7 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
struct elf32_fdpic_loadseg *seg;
struct elf32_phdr *phdr;
unsigned long load_addr, delta_vaddr;
- int loop, dvset;
+ int loop, dvset, ret;
load_addr = params->load_addr;
delta_vaddr = 0;
@@ -1114,7 +1117,9 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
* PT_LOAD */
if (prot & PROT_WRITE && disp > 0) {
kdebug("clear[%d] ad=%lx sz=%lx", loop, maddr, disp);
- clear_user((void __user *) maddr, disp);
+ ret = clear_user((void __user *) maddr, disp);
+ if (ret)
+ return ret;
maddr += disp;
}
@@ -1149,15 +1154,19 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
if (prot & PROT_WRITE && excess1 > 0) {
kdebug("clear[%d] ad=%lx sz=%lx",
loop, maddr + phdr->p_filesz, excess1);
- clear_user((void __user *) maddr + phdr->p_filesz,
- excess1);
+ ret = clear_user((void __user *) maddr + phdr->p_filesz,
+ excess1);
+ if (ret)
+ return ret;
}
#else
if (excess > 0) {
kdebug("clear[%d] ad=%lx sz=%lx",
loop, maddr + phdr->p_filesz, excess);
- clear_user((void *) maddr + phdr->p_filesz, excess);
+ ret = clear_user((void *) maddr + phdr->p_filesz, excess);
+ if (ret)
+ return ret;
}
#endif