arm64: compat: fix compat types affecting struct compat_elf_prpsinfo

commit 971a5b6fe634bb7b617d8c5f25b6a3ddbc600194 upstream.

The compat_elf_prpsinfo structure does not match the arch/arm struct
elf_pspsinfo definition. As result NT_PRPSINFO note in core file
created by arm64 kernel for aarch32 (compat) process has wrong size.
So gdb cannot display command that caused process crash.

Fix is to change size of __compat_uid_t, __compat_gid_t so it would
match size of similar fields in arch/arm case.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index 899af807ef0ff3d789491d6e0ee8d9684886f849..c30a548cee5608f89a8769f42ffd1550feac6ba1 100644 (file)
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -33,8 +33,8 @@ typedef s32           compat_ssize_t;
 typedef s32            compat_time_t;
 typedef s32            compat_clock_t;
 typedef s32            compat_pid_t;
-typedef u32            __compat_uid_t;
-typedef u32            __compat_gid_t;
+typedef u16            __compat_uid_t;
+typedef u16            __compat_gid_t;
 typedef u16            __compat_uid16_t;
 typedef u16            __compat_gid16_t;
 typedef u32            __compat_uid32_t;