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| author | WANG Cong <xiyou.wangcong@gmail.com> | 2008-05-08 21:52:33 +0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-05-16 17:23:11 -0400 |
| commit | 23c4971e3d97de4e1b7961ca6eacee35aa15ce5f (patch) | |
| tree | 5bf0df37e7232b5a867074242645a98a217688f0 | |
| parent | 08a6fac1c63233c87eec129938022f1a9a4d51f6 (diff) | |
| download | lwn-23c4971e3d97de4e1b7961ca6eacee35aa15ce5f.tar.gz lwn-23c4971e3d97de4e1b7961ca6eacee35aa15ce5f.zip | |
[Patch] fs/binfmt_elf.c: fix wrong return values
create_elf_tables() returns 0 on success. But when strnlen_user() "fails",
it returns 0 directly. So this is wrong.
Signed-off-by: WANG Cong <wangcong@zeuux.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/binfmt_elf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index bd08332079cf..0fa95b198e6e 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -256,7 +256,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, return -EFAULT; len = strnlen_user((void __user *)p, MAX_ARG_STRLEN); if (!len || len > MAX_ARG_STRLEN) - return 0; + return -EINVAL; p += len; } if (__put_user(0, argv)) @@ -268,7 +268,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, return -EFAULT; len = strnlen_user((void __user *)p, MAX_ARG_STRLEN); if (!len || len > MAX_ARG_STRLEN) - return 0; + return -EINVAL; p += len; } if (__put_user(0, envp)) |