kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 88 insertions, 0 deletions

diff --git a/target/linux/generic/backport-4.19/013-disable-Wattribute-alias-warning-for-SYSCALL_DEFINEx.patch b/target/linux/generic/backport-4.19/013-disable-Wattribute-alias-warning-for-SYSCALL_DEFINEx.patch
new file mode 100644
index 0000000000..2440ed8c0d
--- /dev/null
+++ b/target/linux/generic/backport-4.19/013-disable-Wattribute-alias-warning-for-SYSCALL_DEFINEx.patch
@@ -0,0 +1,88 @@
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Tue, 19 Jun 2018 13:14:57 -0700
+Subject: [PATCH] disable -Wattribute-alias warning for SYSCALL_DEFINEx()
+
+gcc-8 warns for every single definition of a system call entry
+point, e.g.:
+
+include/linux/compat.h:56:18: error: 'compat_sys_rt_sigprocmask' alias between functions of incompatible types 'long int(int,  compat_sigset_t *, compat_sigset_t *, compat_size_t)' {aka 'long int(int,  struct <anonymous> *, struct <anonymous> *, unsigned int)'} and 'long int(long int,  long int,  long int,  long int)' [-Werror=attribute-alias]
+  asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
+                  ^~~~~~~~~~
+include/linux/compat.h:45:2: note: in expansion of macro 'COMPAT_SYSCALL_DEFINEx'
+  COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
+  ^~~~~~~~~~~~~~~~~~~~~~
+kernel/signal.c:2601:1: note: in expansion of macro 'COMPAT_SYSCALL_DEFINE4'
+ COMPAT_SYSCALL_DEFINE4(rt_sigprocmask, int, how, compat_sigset_t __user *, nset,
+ ^~~~~~~~~~~~~~~~~~~~~~
+include/linux/compat.h:60:18: note: aliased declaration here
+  asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
+                  ^~~~~~~~~~
+
+The new warning seems reasonable in principle, but it doesn't
+help us here, since we rely on the type mismatch to sanitize the
+system call arguments. After I reported this as GCC PR82435, a new
+-Wno-attribute-alias option was added that could be used to turn the
+warning off globally on the command line, but I'd prefer to do it a
+little more fine-grained.
+
+Interestingly, turning a warning off and on again inside of
+a single macro doesn't always work, in this case I had to add
+an extra statement inbetween and decided to copy the __SC_TEST
+one from the native syscall to the compat syscall macro.  See
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83256 for more details
+about this.
+
+[paul.burton@mips.com:
+  - Rebase atop current master.
+  - Split GCC & version arguments to __diag_ignore() in order to match
+    changes to the preceding patch.
+  - Add the comment argument to match the preceding patch.]
+
+Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82435
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Signed-off-by: Paul Burton <paul.burton@mips.com>
+Tested-by: Christophe Leroy <christophe.leroy@c-s.fr>
+Tested-by: Stafford Horne <shorne@gmail.com>
+Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
+---
+
+--- a/include/linux/compat.h
++++ b/include/linux/compat.h
+@@ -48,6 +48,9 @@
+ 	COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
+ 
+ #define COMPAT_SYSCALL_DEFINEx(x, name, ...)				\
++	__diag_push();							\
++	__diag_ignore(GCC, 8, "-Wattribute-alias",			\
++		      "Type aliasing is used to sanitize syscall arguments");\
+ 	asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\
+ 		__attribute__((alias(__stringify(compat_SyS##name))));  \
+ 	static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
+@@ -56,6 +59,7 @@
+ 	{								\
+ 		return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));	\
+ 	}								\
++	__diag_pop();							\
+ 	static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
+ 
+ #ifndef compat_user_stack_pointer
+--- a/include/linux/syscalls.h
++++ b/include/linux/syscalls.h
+@@ -208,6 +208,9 @@ static inline int is_syscall_trace_event
+ 
+ #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
+ #define __SYSCALL_DEFINEx(x, name, ...)					\
++	__diag_push();							\
++	__diag_ignore(GCC, 8, "-Wattribute-alias",			\
++		      "Type aliasing is used to sanitize syscall arguments");\
+ 	asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))	\
+ 		__attribute__((alias(__stringify(SyS##name))));		\
+ 	static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));	\
+@@ -219,6 +222,7 @@ static inline int is_syscall_trace_event
+ 		__PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__));	\
+ 		return ret;						\
+ 	}								\
++	__diag_pop();							\
+ 	static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
+ 
+ /*