From fa4751f454e6b51ef93babfd8b6c8b43a65c9db2 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 5 May 2020 12:12:54 +0200 Subject: binfmt_elf: remove the set_fs in fill_siginfo_note The code in binfmt_elf.c is differnt from the rest of the code that processes siginfo, as it sends siginfo from a kernel buffer to a file rather than from kernel memory to userspace buffers. To remove it's use of set_fs the code needs some different siginfo helpers. Add the helper copy_siginfo_to_external to copy from the kernel's internal siginfo layout to a buffer in the siginfo layout that userspace expects. Modify fill_siginfo_note to use copy_siginfo_to_external instead of set_fs and copy_siginfo_to_user. Update compat_binfmt_elf.c to use the previously added copy_siginfo_to_external32 to handle the compat case. Signed-off-by: "Eric W. Biederman" Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/compat_binfmt_elf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/compat_binfmt_elf.c') diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c index aaad4ca1217e..fa0e24e1b726 100644 --- a/fs/compat_binfmt_elf.c +++ b/fs/compat_binfmt_elf.c @@ -39,7 +39,7 @@ */ #define user_long_t compat_long_t #define user_siginfo_t compat_siginfo_t -#define copy_siginfo_to_user copy_siginfo_to_user32 +#define copy_siginfo_to_external copy_siginfo_to_external32 /* * The machine-dependent core note format types are defined in elfcore-compat.h, -- cgit