9 files changed, 94 insertions, 181 deletions

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 6538928..a6f3f7d 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -26,6 +26,7 @@
 #include <asm/errno.h>
 #include <asm/thread_info.h>
 #include <asm/unistd.h>
+#include <asm/unistd32.h>
 
 /*
  * Bad Abort numbers
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index ac3550e..6e1e77f 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -234,28 +234,33 @@ static int ptrace_hbp_fill_attr_ctrl(unsigned int note_type,
 				     struct arch_hw_breakpoint_ctrl ctrl,
 				     struct perf_event_attr *attr)
 {
-	int err, len, type;
+	int err, len, type, disabled = !ctrl.enabled;
 
-	err = arch_bp_generic_fields(ctrl, &len, &type);
-	if (err)
-		return err;
-
-	switch (note_type) {
-	case NT_ARM_HW_BREAK:
-		if ((type & HW_BREAKPOINT_X) != type)
-			return -EINVAL;
-		break;
-	case NT_ARM_HW_WATCH:
-		if ((type & HW_BREAKPOINT_RW) != type)
+	if (disabled) {
+		len = 0;
+		type = HW_BREAKPOINT_EMPTY;
+	} else {
+		err = arch_bp_generic_fields(ctrl, &len, &type);
+		if (err)
+			return err;
+
+		switch (note_type) {
+		case NT_ARM_HW_BREAK:
+			if ((type & HW_BREAKPOINT_X) != type)
+				return -EINVAL;
+			break;
+		case NT_ARM_HW_WATCH:
+			if ((type & HW_BREAKPOINT_RW) != type)
+				return -EINVAL;
+			break;
+		default:
 			return -EINVAL;
-		break;
-	default:
-		return -EINVAL;
+		}
 	}
 
 	attr->bp_len	= len;
 	attr->bp_type	= type;
-	attr->disabled	= !ctrl.enabled;
+	attr->disabled	= disabled;
 
 	return 0;
 }
@@ -372,7 +377,7 @@ static int ptrace_hbp_set_addr(unsigned int note_type,
 
 #define PTRACE_HBP_ADDR_SZ	sizeof(u64)
 #define PTRACE_HBP_CTRL_SZ	sizeof(u32)
-#define PTRACE_HBP_REG_OFF	sizeof(u32)
+#define PTRACE_HBP_PAD_SZ	sizeof(u32)
 
 static int hw_break_get(struct task_struct *target,
 			const struct user_regset *regset,
@@ -380,7 +385,7 @@ static int hw_break_get(struct task_struct *target,
 			void *kbuf, void __user *ubuf)
 {
 	unsigned int note_type = regset->core_note_type;
-	int ret, idx = 0, offset = PTRACE_HBP_REG_OFF, limit;
+	int ret, idx = 0, offset, limit;
 	u32 info, ctrl;
 	u64 addr;
 
@@ -389,11 +394,20 @@ static int hw_break_get(struct task_struct *target,
 	if (ret)
 		return ret;
 
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, &info, 0, 4);
+	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, &info, 0,
+				  sizeof(info));
+	if (ret)
+		return ret;
+
+	/* Pad */
+	offset = offsetof(struct user_hwdebug_state, pad);
+	ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, offset,
+				       offset + PTRACE_HBP_PAD_SZ);
 	if (ret)
 		return ret;
 
 	/* (address, ctrl) registers */
+	offset = offsetof(struct user_hwdebug_state, dbg_regs);
 	limit = regset->n * regset->size;
 	while (count && offset < limit) {
 		ret = ptrace_hbp_get_addr(note_type, target, idx, &addr);
@@ -413,6 +427,13 @@ static int hw_break_get(struct task_struct *target,
 		if (ret)
 			return ret;
 		offset += PTRACE_HBP_CTRL_SZ;
+
+		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+					       offset,
+					       offset + PTRACE_HBP_PAD_SZ);
+		if (ret)
+			return ret;
+		offset += PTRACE_HBP_PAD_SZ;
 		idx++;
 	}
 
@@ -425,12 +446,13 @@ static int hw_break_set(struct task_struct *target,
 			const void *kbuf, const void __user *ubuf)
 {
 	unsigned int note_type = regset->core_note_type;
-	int ret, idx = 0, offset = PTRACE_HBP_REG_OFF, limit;
+	int ret, idx = 0, offset, limit;
 	u32 ctrl;
 	u64 addr;
 
-	/* Resource info */
-	ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, 0, 4);
+	/* Resource info and pad */
+	offset = offsetof(struct user_hwdebug_state, dbg_regs);
+	ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, 0, offset);
 	if (ret)
 		return ret;
 
@@ -454,6 +476,13 @@ static int hw_break_set(struct task_struct *target,
 		if (ret)
 			return ret;
 		offset += PTRACE_HBP_CTRL_SZ;
+
+		ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+						offset,
+						offset + PTRACE_HBP_PAD_SZ);
+		if (ret)
+			return ret;
+		offset += PTRACE_HBP_PAD_SZ;
 		idx++;
 	}
 
@@ -823,11 +852,11 @@ static int compat_ptrace_read_user(struct task_struct *tsk, compat_ulong_t off,
 	if (off & 3)
 		return -EIO;
 
-	if (off == PT_TEXT_ADDR)
+	if (off == COMPAT_PT_TEXT_ADDR)
 		tmp = tsk->mm->start_code;
-	else if (off == PT_DATA_ADDR)
+	else if (off == COMPAT_PT_DATA_ADDR)
 		tmp = tsk->mm->start_data;
-	else if (off == PT_TEXT_END_ADDR)
+	else if (off == COMPAT_PT_TEXT_END_ADDR)
 		tmp = tsk->mm->end_code;
 	else if (off < sizeof(compat_elf_gregset_t))
 		return copy_regset_to_user(tsk, &user_aarch32_view,
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 48ffb9f..7665a9b 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -170,7 +170,19 @@ static void __init setup_machine_fdt(phys_addr_t dt_phys)
 
 void __init early_init_dt_add_memory_arch(u64 base, u64 size)
 {
+	base &= PAGE_MASK;
 	size &= PAGE_MASK;
+	if (base + size < PHYS_OFFSET) {
+		pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
+			   base, base + size);
+		return;
+	}
+	if (base < PHYS_OFFSET) {
+		pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
+			   base, PHYS_OFFSET);
+		size -= PHYS_OFFSET - base;
+		base = PHYS_OFFSET;
+	}
 	memblock_add(base, size);
 }
 
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index 0790a87..4654824 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -18,8 +18,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define __SYSCALL_COMPAT
-
 #include <linux/compat.h>
 #include <linux/signal.h>
 #include <linux/syscalls.h>
@@ -28,7 +26,7 @@
 #include <asm/fpsimd.h>
 #include <asm/signal32.h>
 #include <asm/uaccess.h>
-#include <asm/unistd.h>
+#include <asm/unistd32.h>
 
 struct compat_sigaction {
 	compat_uptr_t			sa_handler;
@@ -126,19 +124,19 @@ struct compat_rt_sigframe {
  * For ARM syscalls, the syscall number has to be loaded into r7.
  * We do not support an OABI userspace.
  */
-#define MOV_R7_NR_SIGRETURN	(0xe3a07000 | __NR_sigreturn)
-#define SVC_SYS_SIGRETURN	(0xef000000 | __NR_sigreturn)
-#define MOV_R7_NR_RT_SIGRETURN	(0xe3a07000 | __NR_rt_sigreturn)
-#define SVC_SYS_RT_SIGRETURN	(0xef000000 | __NR_rt_sigreturn)
+#define MOV_R7_NR_SIGRETURN	(0xe3a07000 | __NR_compat_sigreturn)
+#define SVC_SYS_SIGRETURN	(0xef000000 | __NR_compat_sigreturn)
+#define MOV_R7_NR_RT_SIGRETURN	(0xe3a07000 | __NR_compat_rt_sigreturn)
+#define SVC_SYS_RT_SIGRETURN	(0xef000000 | __NR_compat_rt_sigreturn)
 
 /*
  * For Thumb syscalls, we also pass the syscall number via r7. We therefore
  * need two 16-bit instructions.
  */
-#define SVC_THUMB_SIGRETURN	(((0xdf00 | __NR_sigreturn) << 16) | \
-				   0x2700 | __NR_sigreturn)
-#define SVC_THUMB_RT_SIGRETURN	(((0xdf00 | __NR_rt_sigreturn) << 16) | \
-				   0x2700 | __NR_rt_sigreturn)
+#define SVC_THUMB_SIGRETURN	(((0xdf00 | __NR_compat_sigreturn) << 16) | \
+				   0x2700 | __NR_compat_sigreturn)
+#define SVC_THUMB_RT_SIGRETURN	(((0xdf00 | __NR_compat_rt_sigreturn) << 16) | \
+				   0x2700 | __NR_compat_rt_sigreturn)
 
 const compat_ulong_t aarch32_sigret_code[6] = {
 	/*
@@ -819,5 +817,5 @@ asmlinkage int compat_sys_rt_sigqueueinfo(int pid, int sig,
 
 void compat_setup_restart_syscall(struct pt_regs *regs)
 {
-       regs->regs[7] = __NR_restart_syscall;
+       regs->regs[7] = __NR_compat_restart_syscall;
 }
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index b711525..226b6bf 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -46,7 +46,6 @@
 #include <asm/sections.h>
 #include <asm/tlbflush.h>
 #include <asm/ptrace.h>
-#include <asm/mmu_context.h>
 
 /*
  * as from 2.5, kernels no longer have an init_tasks structure
diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c
index 905fcfb..b120df3 100644
--- a/arch/arm64/kernel/sys.c
+++ b/arch/arm64/kernel/sys.c
@@ -50,13 +50,13 @@ asmlinkage long sys_execve(const char __user *filenamei,
 			   struct pt_regs *regs)
 {
 	long error;
-	char * filename;
+	struct filename *filename;
 
 	filename = getname(filenamei);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
 		goto out;
-	error = do_execve(filename, argv, envp, regs);
+	error = do_execve(filename->name, argv, envp, regs);
 	putname(filename);
 out:
 	return error;
diff --git a/arch/arm64/kernel/sys32.S b/arch/arm64/kernel/sys32.S
index 5e4dc93..54c4aec 100644
--- a/arch/arm64/kernel/sys32.S
+++ b/arch/arm64/kernel/sys32.S
@@ -147,136 +147,12 @@ compat_sys_fanotify_mark_wrapper:
 	b	sys_fanotify_mark
 ENDPROC(compat_sys_fanotify_mark_wrapper)
 
-/*
- * Use the compat system call wrappers.
- */
-#define sys_fork		compat_sys_fork_wrapper
-#define sys_open		compat_sys_open
-#define sys_execve		compat_sys_execve_wrapper
-#define sys_lseek		compat_sys_lseek_wrapper
-#define sys_mount		compat_sys_mount
-#define sys_ptrace		compat_sys_ptrace
-#define sys_times		compat_sys_times
-#define sys_ioctl		compat_sys_ioctl
-#define sys_fcntl		compat_sys_fcntl
-#define sys_ustat		compat_sys_ustat
-#define sys_sigaction		compat_sys_sigaction
-#define sys_sigsuspend		compat_sys_sigsuspend
-#define sys_sigpending		compat_sys_sigpending
-#define sys_setrlimit		compat_sys_setrlimit
-#define sys_getrusage		compat_sys_getrusage
-#define sys_gettimeofday	compat_sys_gettimeofday
-#define sys_settimeofday	compat_sys_settimeofday
-#define sys_statfs		compat_sys_statfs
-#define sys_fstatfs		compat_sys_fstatfs
-#define sys_setitimer		compat_sys_setitimer
-#define sys_getitimer		compat_sys_getitimer
-#define sys_newstat		compat_sys_newstat
-#define sys_newlstat		compat_sys_newlstat
-#define sys_newfstat		compat_sys_newfstat
-#define sys_wait4		compat_sys_wait4
-#define sys_sysinfo		compat_sys_sysinfo
-#define sys_sigreturn		compat_sys_sigreturn_wrapper
-#define sys_clone		compat_sys_clone_wrapper
-#define sys_adjtimex		compat_sys_adjtimex
-#define sys_sigprocmask		compat_sys_sigprocmask
-#define sys_getdents		compat_sys_getdents
-#define sys_select		compat_sys_select
-#define sys_readv		compat_sys_readv
-#define sys_writev		compat_sys_writev
-#define sys_sysctl		compat_sys_sysctl
-#define sys_sched_rr_get_interval compat_sys_sched_rr_get_interval
-#define sys_nanosleep		compat_sys_nanosleep
-#define sys_rt_sigreturn	compat_sys_rt_sigreturn_wrapper
-#define sys_rt_sigaction	compat_sys_rt_sigaction
-#define sys_rt_sigprocmask	compat_sys_rt_sigprocmask
-#define sys_rt_sigpending	compat_sys_rt_sigpending
-#define sys_rt_sigtimedwait	compat_sys_rt_sigtimedwait
-#define sys_rt_sigqueueinfo	compat_sys_rt_sigqueueinfo
-#define sys_rt_sigsuspend	compat_sys_rt_sigsuspend
-#define sys_pread64		compat_sys_pread64_wrapper
-#define sys_pwrite64		compat_sys_pwrite64_wrapper
-#define sys_sigaltstack		compat_sys_sigaltstack_wrapper
-#define sys_sendfile		compat_sys_sendfile
-#define sys_vfork		compat_sys_vfork_wrapper
-#define sys_getrlimit		compat_sys_getrlimit
-#define sys_mmap2		sys_mmap_pgoff
-#define sys_truncate64		compat_sys_truncate64_wrapper
-#define sys_ftruncate64		compat_sys_ftruncate64_wrapper
-#define sys_getdents64		compat_sys_getdents64
-#define sys_fcntl64		compat_sys_fcntl64
-#define sys_readahead		compat_sys_readahead_wrapper
-#define sys_futex		compat_sys_futex
-#define sys_sched_setaffinity	compat_sys_sched_setaffinity
-#define sys_sched_getaffinity	compat_sys_sched_getaffinity
-#define sys_io_setup		compat_sys_io_setup
-#define sys_io_getevents	compat_sys_io_getevents
-#define sys_io_submit		compat_sys_io_submit
-#define sys_lookup_dcookie	compat_sys_lookup_dcookie
-#define sys_timer_create	compat_sys_timer_create
-#define sys_timer_settime	compat_sys_timer_settime
-#define sys_timer_gettime	compat_sys_timer_gettime
-#define sys_clock_settime	compat_sys_clock_settime
-#define sys_clock_gettime	compat_sys_clock_gettime
-#define sys_clock_getres	compat_sys_clock_getres
-#define sys_clock_nanosleep	compat_sys_clock_nanosleep
-#define sys_statfs64		compat_sys_statfs64_wrapper
-#define sys_fstatfs64		compat_sys_fstatfs64_wrapper
-#define sys_utimes		compat_sys_utimes
-#define sys_fadvise64_64	compat_sys_fadvise64_64_wrapper
-#define sys_mq_open		compat_sys_mq_open
-#define sys_mq_timedsend	compat_sys_mq_timedsend
-#define sys_mq_timedreceive	compat_sys_mq_timedreceive
-#define sys_mq_notify		compat_sys_mq_notify
-#define sys_mq_getsetattr	compat_sys_mq_getsetattr
-#define sys_waitid		compat_sys_waitid
-#define sys_recv		compat_sys_recv
-#define sys_recvfrom		compat_sys_recvfrom
-#define sys_setsockopt		compat_sys_setsockopt
-#define sys_getsockopt		compat_sys_getsockopt
-#define sys_sendmsg		compat_sys_sendmsg
-#define sys_recvmsg		compat_sys_recvmsg
-#define sys_semctl		compat_sys_semctl
-#define sys_msgsnd		compat_sys_msgsnd
-#define sys_msgrcv		compat_sys_msgrcv
-#define sys_msgctl		compat_sys_msgctl
-#define sys_shmat		compat_sys_shmat
-#define sys_shmctl		compat_sys_shmctl
-#define sys_keyctl		compat_sys_keyctl
-#define sys_semtimedop		compat_sys_semtimedop
-#define sys_mbind		compat_sys_mbind
-#define sys_get_mempolicy	compat_sys_get_mempolicy
-#define sys_set_mempolicy	compat_sys_set_mempolicy
-#define sys_openat		compat_sys_openat
-#define sys_futimesat		compat_sys_futimesat
-#define sys_pselect6		compat_sys_pselect6
-#define sys_ppoll		compat_sys_ppoll
-#define sys_set_robust_list	compat_sys_set_robust_list
-#define sys_get_robust_list	compat_sys_get_robust_list
-#define sys_sync_file_range2	compat_sys_sync_file_range2_wrapper
-#define sys_vmsplice		compat_sys_vmsplice
-#define sys_move_pages		compat_sys_move_pages
-#define sys_epoll_pwait		compat_sys_epoll_pwait
-#define sys_kexec_load		compat_sys_kexec_load
-#define sys_utimensat		compat_sys_utimensat
-#define sys_signalfd		compat_sys_signalfd
-#define sys_fallocate		compat_sys_fallocate_wrapper
-#define sys_timerfd_settime	compat_sys_timerfd_settime
-#define sys_timerfd_gettime	compat_sys_timerfd_gettime
-#define sys_signalfd4		compat_sys_signalfd4
-#define sys_preadv		compat_sys_preadv
-#define sys_pwritev		compat_sys_pwritev
-#define sys_rt_tgsigqueueinfo	compat_sys_rt_tgsigqueueinfo
-#define sys_recvmmsg		compat_sys_recvmmsg
-#define sys_fanotify_mark	compat_sys_fanotify_mark_wrapper
-
 #undef __SYSCALL
 #define __SYSCALL(x, y)		.quad	y	// x
-#define __SYSCALL_COMPAT
 
 /*
  * The system calls table must be 4KB aligned.
  */
 	.align	12
 ENTRY(compat_sys_call_table)
-#include <asm/unistd.h>
+#include <asm/unistd32.h>
diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c
index 93f10e2..906e3bd 100644
--- a/arch/arm64/kernel/sys_compat.c
+++ b/arch/arm64/kernel/sys_compat.c
@@ -18,8 +18,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define __SYSCALL_COMPAT
-
 #include <linux/compat.h>
 #include <linux/personality.h>
 #include <linux/sched.h>
@@ -28,7 +26,7 @@
 #include <linux/uaccess.h>
 
 #include <asm/cacheflush.h>
-#include <asm/unistd.h>
+#include <asm/unistd32.h>
 
 asmlinkage int compat_sys_fork(struct pt_regs *regs)
 {
@@ -56,14 +54,14 @@ asmlinkage int compat_sys_execve(const char __user *filenamei,
 				 struct pt_regs *regs)
 {
 	int error;
-	char * filename;
+	struct filename *filename;
 
 	filename = getname(filenamei);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
 		goto out;
-	error = compat_do_execve(filename, compat_ptr(argv), compat_ptr(envp),
-				 regs);
+	error = compat_do_execve(filename->name, compat_ptr(argv),
+					compat_ptr(envp), regs);
 	putname(filename);
 out:
 	return error;
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index 17948fc..ba45794 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -28,6 +28,7 @@
 #include <linux/sched.h>
 #include <linux/signal.h>
 #include <linux/slab.h>
+#include <linux/timekeeper_internal.h>
 #include <linux/vmalloc.h>
 
 #include <asm/cacheflush.h>
@@ -222,11 +223,10 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
 /*
  * Update the vDSO data page to keep in sync with kernel timekeeping.
  */
-void update_vsyscall(struct timespec *ts, struct timespec *wtm,
-		     struct clocksource *clock, u32 mult)
+void update_vsyscall(struct timekeeper *tk)
 {
 	struct timespec xtime_coarse;
-	u32 use_syscall = strcmp(clock->name, "arch_sys_counter");
+	u32 use_syscall = strcmp(tk->clock->name, "arch_sys_counter");
 
 	++vdso_data->tb_seq_count;
 	smp_wmb();
@@ -237,13 +237,13 @@ void update_vsyscall(struct timespec *ts, struct timespec *wtm,
 	vdso_data->xtime_coarse_nsec		= xtime_coarse.tv_nsec;
 
 	if (!use_syscall) {
-		vdso_data->cs_cycle_last	= clock->cycle_last;
-		vdso_data->xtime_clock_sec	= ts->tv_sec;
-		vdso_data->xtime_clock_nsec	= ts->tv_nsec;
-		vdso_data->cs_mult		= mult;
-		vdso_data->cs_shift		= clock->shift;
-		vdso_data->wtm_clock_sec	= wtm->tv_sec;
-		vdso_data->wtm_clock_nsec	= wtm->tv_nsec;
+		vdso_data->cs_cycle_last	= tk->clock->cycle_last;
+		vdso_data->xtime_clock_sec	= tk->xtime_sec;
+		vdso_data->xtime_clock_nsec	= tk->xtime_nsec >> tk->shift;
+		vdso_data->cs_mult		= tk->mult;
+		vdso_data->cs_shift		= tk->shift;
+		vdso_data->wtm_clock_sec	= tk->wall_to_monotonic.tv_sec;
+		vdso_data->wtm_clock_nsec	= tk->wall_to_monotonic.tv_nsec;
 	}
 
 	smp_wmb();