linux: remove deprecated 4.6 support

1 files changed, 0 insertions, 295 deletions

diff --git a/target/linux/patches/4.6.6/revert-sparc.patch b/target/linux/patches/4.6.6/revert-sparc.patch
deleted file mode 100644
index d5bb8ad37..000000000
--- a/target/linux/patches/4.6.6/revert-sparc.patch
+++ /dev/null
@@ -1,295 +0,0 @@
-diff -Nur linux-4.6.4.orig/arch/sparc/kernel/signal_32.c linux-4.6.4/arch/sparc/kernel/signal_32.c
---- linux-4.6.4.orig/arch/sparc/kernel/signal_32.c	2016-07-11 18:30:07.000000000 +0200
-+++ linux-4.6.4/arch/sparc/kernel/signal_32.c	2016-07-18 21:55:43.720763787 +0200
-@@ -60,22 +60,10 @@
- #define SF_ALIGNEDSZ  (((sizeof(struct signal_frame) + 7) & (~7)))
- #define RT_ALIGNEDSZ  (((sizeof(struct rt_signal_frame) + 7) & (~7)))
- 
--/* Checks if the fp is valid.  We always build signal frames which are
-- * 16-byte aligned, therefore we can always enforce that the restore
-- * frame has that property as well.
-- */
--static inline bool invalid_frame_pointer(void __user *fp, int fplen)
--{
--	if ((((unsigned long) fp) & 15) || !__access_ok((unsigned long)fp, fplen))
--		return true;
--
--	return false;
--}
--
- asmlinkage void do_sigreturn(struct pt_regs *regs)
- {
--	unsigned long up_psr, pc, npc, ufp;
- 	struct signal_frame __user *sf;
-+	unsigned long up_psr, pc, npc;
- 	sigset_t set;
- 	__siginfo_fpu_t __user *fpu_save;
- 	__siginfo_rwin_t __user *rwin_save;
-@@ -89,13 +77,10 @@
- 	sf = (struct signal_frame __user *) regs->u_regs[UREG_FP];
- 
- 	/* 1. Make sure we are not getting garbage from the user */
--	if (!invalid_frame_pointer(sf, sizeof(*sf)))
-+	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)))
- 		goto segv_and_exit;
- 
--	if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP]))
--		goto segv_and_exit;
--
--	if (ufp & 0x7)
-+	if (((unsigned long) sf) & 3)
- 		goto segv_and_exit;
- 
- 	err = __get_user(pc,  &sf->info.si_regs.pc);
-@@ -142,7 +127,7 @@
- asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
- {
- 	struct rt_signal_frame __user *sf;
--	unsigned int psr, pc, npc, ufp;
-+	unsigned int psr, pc, npc;
- 	__siginfo_fpu_t __user *fpu_save;
- 	__siginfo_rwin_t __user *rwin_save;
- 	sigset_t set;
-@@ -150,13 +135,8 @@
- 
- 	synchronize_user_stack();
- 	sf = (struct rt_signal_frame __user *) regs->u_regs[UREG_FP];
--	if (!invalid_frame_pointer(sf, sizeof(*sf)))
--		goto segv;
--
--	if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
--		goto segv;
--
--	if (ufp & 0x7)
-+	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
-+	    (((unsigned long) sf) & 0x03))
- 		goto segv;
- 
- 	err = __get_user(pc, &sf->regs.pc);
-@@ -198,6 +178,15 @@
- 	force_sig(SIGSEGV, current);
- }
- 
-+/* Checks if the fp is valid */
-+static inline int invalid_frame_pointer(void __user *fp, int fplen)
-+{
-+	if ((((unsigned long) fp) & 7) || !__access_ok((unsigned long)fp, fplen))
-+		return 1;
-+
-+	return 0;
-+}
-+
- static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize)
- {
- 	unsigned long sp = regs->u_regs[UREG_FP];
-diff -Nur linux-4.6.4.orig/arch/sparc/kernel/signal32.c linux-4.6.4/arch/sparc/kernel/signal32.c
---- linux-4.6.4.orig/arch/sparc/kernel/signal32.c	2016-07-11 18:30:07.000000000 +0200
-+++ linux-4.6.4/arch/sparc/kernel/signal32.c	2016-07-18 21:56:41.807007836 +0200
-@@ -138,24 +138,12 @@
- 	return 0;
- }
- 
--/* Checks if the fp is valid.  We always build signal frames which are
-- * 16-byte aligned, therefore we can always enforce that the restore
-- * frame has that property as well.
-- */
--static bool invalid_frame_pointer(void __user *fp, int fplen)
--{
--	if ((((unsigned long) fp) & 15) ||
--	    ((unsigned long)fp) > 0x100000000ULL - fplen)
--		return true;
--	return false;
--}
--
- void do_sigreturn32(struct pt_regs *regs)
- {
- 	struct signal_frame32 __user *sf;
- 	compat_uptr_t fpu_save;
- 	compat_uptr_t rwin_save;
--	unsigned int psr, ufp;
-+	unsigned int psr;
- 	unsigned int pc, npc;
- 	sigset_t set;
- 	compat_sigset_t seta;
-@@ -170,16 +158,11 @@
- 	sf = (struct signal_frame32 __user *) regs->u_regs[UREG_FP];
- 
- 	/* 1. Make sure we are not getting garbage from the user */
--	if (invalid_frame_pointer(sf, sizeof(*sf)))
--		goto segv;
--
--	if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP]))
--		goto segv;
--
--	if (ufp & 0x7)
-+	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
-+	    (((unsigned long) sf) & 3))
- 		goto segv;
- 
--	if (__get_user(pc, &sf->info.si_regs.pc) ||
-+	if (get_user(pc, &sf->info.si_regs.pc) ||
- 	    __get_user(npc, &sf->info.si_regs.npc))
- 		goto segv;
- 
-@@ -244,7 +227,7 @@
- asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
- {
- 	struct rt_signal_frame32 __user *sf;
--	unsigned int psr, pc, npc, ufp;
-+	unsigned int psr, pc, npc;
- 	compat_uptr_t fpu_save;
- 	compat_uptr_t rwin_save;
- 	sigset_t set;
-@@ -259,16 +242,11 @@
- 	sf = (struct rt_signal_frame32 __user *) regs->u_regs[UREG_FP];
- 
- 	/* 1. Make sure we are not getting garbage from the user */
--	if (invalid_frame_pointer(sf, sizeof(*sf)))
-+	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
-+	    (((unsigned long) sf) & 3))
- 		goto segv;
- 
--	if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
--		goto segv;
--
--	if (ufp & 0x7)
--		goto segv;
--
--	if (__get_user(pc, &sf->regs.pc) ||
-+	if (get_user(pc, &sf->regs.pc) || 
- 	    __get_user(npc, &sf->regs.npc))
- 		goto segv;
- 
-@@ -329,6 +307,14 @@
- 	force_sig(SIGSEGV, current);
- }
- 
-+/* Checks if the fp is valid */
-+static int invalid_frame_pointer(void __user *fp, int fplen)
-+{
-+	if ((((unsigned long) fp) & 7) || ((unsigned long)fp) > 0x100000000ULL - fplen)
-+		return 1;
-+	return 0;
-+}
-+
- static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize)
- {
- 	unsigned long sp;
-diff -Nur linux-4.6.4.orig/arch/sparc/kernel/signal_64.c linux-4.6.4/arch/sparc/kernel/signal_64.c
---- linux-4.6.4.orig/arch/sparc/kernel/signal_64.c	2016-07-11 18:30:07.000000000 +0200
-+++ linux-4.6.4/arch/sparc/kernel/signal_64.c	2016-07-18 21:55:43.720763787 +0200
-@@ -234,17 +234,6 @@
- 	goto out;
- }
- 
--/* Checks if the fp is valid.  We always build rt signal frames which
-- * are 16-byte aligned, therefore we can always enforce that the
-- * restore frame has that property as well.
-- */
--static bool invalid_frame_pointer(void __user *fp)
--{
--	if (((unsigned long) fp) & 15)
--		return true;
--	return false;
--}
--
- struct rt_signal_frame {
- 	struct sparc_stackf	ss;
- 	siginfo_t		info;
-@@ -257,8 +246,8 @@
- 
- void do_rt_sigreturn(struct pt_regs *regs)
- {
--	unsigned long tpc, tnpc, tstate, ufp;
- 	struct rt_signal_frame __user *sf;
-+	unsigned long tpc, tnpc, tstate;
- 	__siginfo_fpu_t __user *fpu_save;
- 	__siginfo_rwin_t __user *rwin_save;
- 	sigset_t set;
-@@ -272,16 +261,10 @@
- 		(regs->u_regs [UREG_FP] + STACK_BIAS);
- 
- 	/* 1. Make sure we are not getting garbage from the user */
--	if (invalid_frame_pointer(sf))
--		goto segv;
--
--	if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
-+	if (((unsigned long) sf) & 3)
- 		goto segv;
- 
--	if ((ufp + STACK_BIAS) & 0x7)
--		goto segv;
--
--	err = __get_user(tpc, &sf->regs.tpc);
-+	err = get_user(tpc, &sf->regs.tpc);
- 	err |= __get_user(tnpc, &sf->regs.tnpc);
- 	if (test_thread_flag(TIF_32BIT)) {
- 		tpc &= 0xffffffff;
-@@ -325,6 +308,14 @@
- 	force_sig(SIGSEGV, current);
- }
- 
-+/* Checks if the fp is valid */
-+static int invalid_frame_pointer(void __user *fp)
-+{
-+	if (((unsigned long) fp) & 15)
-+		return 1;
-+	return 0;
-+}
-+
- static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize)
- {
- 	unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
-diff -Nur linux-4.6.4.orig/arch/sparc/kernel/sigutil_32.c linux-4.6.4/arch/sparc/kernel/sigutil_32.c
---- linux-4.6.4.orig/arch/sparc/kernel/sigutil_32.c	2016-07-11 18:30:07.000000000 +0200
-+++ linux-4.6.4/arch/sparc/kernel/sigutil_32.c	2016-07-18 21:55:43.720763787 +0200
-@@ -48,10 +48,6 @@
- int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
- {
- 	int err;
--
--	if (((unsigned long) fpu) & 3)
--		return -EFAULT;
--
- #ifdef CONFIG_SMP
- 	if (test_tsk_thread_flag(current, TIF_USEDFPU))
- 		regs->psr &= ~PSR_EF;
-@@ -101,10 +97,7 @@
- 	struct thread_info *t = current_thread_info();
- 	int i, wsaved, err;
- 
--	if (((unsigned long) rp) & 3)
--		return -EFAULT;
--
--	get_user(wsaved, &rp->wsaved);
-+	__get_user(wsaved, &rp->wsaved);
- 	if (wsaved > NSWINS)
- 		return -EFAULT;
- 
-diff -Nur linux-4.6.4.orig/arch/sparc/kernel/sigutil_64.c linux-4.6.4/arch/sparc/kernel/sigutil_64.c
---- linux-4.6.4.orig/arch/sparc/kernel/sigutil_64.c	2016-07-11 18:30:07.000000000 +0200
-+++ linux-4.6.4/arch/sparc/kernel/sigutil_64.c	2016-07-18 21:55:43.720763787 +0200
-@@ -37,10 +37,7 @@
- 	unsigned long fprs;
- 	int err;
- 
--	if (((unsigned long) fpu) & 7)
--		return -EFAULT;
--
--	err = get_user(fprs, &fpu->si_fprs);
-+	err = __get_user(fprs, &fpu->si_fprs);
- 	fprs_write(0);
- 	regs->tstate &= ~TSTATE_PEF;
- 	if (fprs & FPRS_DL)
-@@ -75,10 +72,7 @@
- 	struct thread_info *t = current_thread_info();
- 	int i, wsaved, err;
- 
--	if (((unsigned long) rp) & 7)
--		return -EFAULT;
--
--	get_user(wsaved, &rp->wsaved);
-+	__get_user(wsaved, &rp->wsaved);
- 	if (wsaved > NSWINS)
- 		return -EFAULT;
-