Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index c05f24f..b40fc63 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -15,7 +15,6 @@
  * This structure is used to hold the arguments that are used when loading binaries.
  */
 struct linux_binprm {
-	char buf[BINPRM_BUF_SIZE];
 #ifdef CONFIG_MMU
 	struct vm_area_struct *vma;
 	unsigned long vma_pages;
@@ -25,6 +24,7 @@
 #endif
 	struct mm_struct *mm;
 	unsigned long p; /* current top of mem */
+	unsigned long argmin; /* rlimit marker for copy_strings() */
 	unsigned int
 		/*
 		 * True after the bprm_set_creds hook has been called once
@@ -63,6 +63,8 @@
 	unsigned long loader, exec;
 
 	struct rlimit rlim_stack; /* Saved RLIMIT_STACK used during exec. */
+
+	char buf[BINPRM_BUF_SIZE];
 } __randomize_layout;
 
 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
@@ -78,7 +80,7 @@
 
 /* Function parameter for binfmt->coredump */
 struct coredump_params {
-	const siginfo_t *siginfo;
+	const kernel_siginfo_t *siginfo;
 	struct pt_regs *regs;
 	struct file *file;
 	unsigned long limit;
@@ -138,7 +140,6 @@
 extern int bprm_change_interp(const char *interp, struct linux_binprm *bprm);
 extern int copy_strings_kernel(int argc, const char *const *argv,
 			       struct linux_binprm *bprm);
-extern int prepare_bprm_creds(struct linux_binprm *bprm);
 extern void install_exec_creds(struct linux_binprm *bprm);
 extern void set_binfmt(struct linux_binfmt *new);
 extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);