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-rw-r--r--arch/parisc/include/asm/uaccess.h1
-rw-r--r--arch/parisc/include/uapi/asm/siginfo.h4
-rw-r--r--arch/parisc/kernel/asm-offsets.c1
-rw-r--r--arch/parisc/kernel/irq.c8
-rw-r--r--arch/parisc/kernel/module.c2
-rw-r--r--arch/parisc/kernel/parisc_ksyms.c10
-rw-r--r--arch/parisc/kernel/ptrace.c16
-rw-r--r--arch/parisc/kernel/syscall.S9
-rw-r--r--arch/parisc/kernel/traps.c3
-rw-r--r--arch/parisc/kernel/unaligned.c10
-rw-r--r--arch/parisc/lib/fixup.S10
-rw-r--r--arch/parisc/mm/fault.c1
12 files changed, 56 insertions, 19 deletions
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index a5cb070b54bf..df9d8dd72db2 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -76,6 +76,7 @@ struct exception_table_entry {
*/
struct exception_data {
unsigned long fault_ip;
+ unsigned long fault_gp;
unsigned long fault_space;
unsigned long fault_addr;
};
diff --git a/arch/parisc/include/uapi/asm/siginfo.h b/arch/parisc/include/uapi/asm/siginfo.h
index d7034728f377..1c75565d984b 100644
--- a/arch/parisc/include/uapi/asm/siginfo.h
+++ b/arch/parisc/include/uapi/asm/siginfo.h
@@ -1,6 +1,10 @@
#ifndef _PARISC_SIGINFO_H
#define _PARISC_SIGINFO_H
+#if defined(__LP64__)
+#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
+#endif
+
#include <asm-generic/siginfo.h>
#undef NSIGTRAP
diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c
index dcd55103a4bb..a0dc1e50e3a3 100644
--- a/arch/parisc/kernel/asm-offsets.c
+++ b/arch/parisc/kernel/asm-offsets.c
@@ -292,6 +292,7 @@ int main(void)
DEFINE(ASM_PT_INITIAL, PT_INITIAL);
BLANK();
DEFINE(EXCDATA_IP, offsetof(struct exception_data, fault_ip));
+ DEFINE(EXCDATA_GP, offsetof(struct exception_data, fault_gp));
DEFINE(EXCDATA_SPACE, offsetof(struct exception_data, fault_space));
DEFINE(EXCDATA_ADDR, offsetof(struct exception_data, fault_addr));
BLANK();
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index cfe056fe7f5c..34f06be569d9 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -507,8 +507,8 @@ void do_cpu_irq_mask(struct pt_regs *regs)
struct pt_regs *old_regs;
unsigned long eirr_val;
int irq, cpu = smp_processor_id();
-#ifdef CONFIG_SMP
struct irq_desc *desc;
+#ifdef CONFIG_SMP
cpumask_t dest;
#endif
@@ -521,8 +521,12 @@ void do_cpu_irq_mask(struct pt_regs *regs)
goto set_out;
irq = eirr_to_irq(eirr_val);
-#ifdef CONFIG_SMP
+ /* Filter out spurious interrupts, mostly from serial port at bootup */
desc = irq_to_desc(irq);
+ if (unlikely(!desc->action))
+ goto set_out;
+
+#ifdef CONFIG_SMP
cpumask_copy(&dest, desc->irq_data.affinity);
if (irqd_is_per_cpu(&desc->irq_data) &&
!cpu_isset(smp_processor_id(), dest)) {
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index 50dfafc3f2c1..0d498efddab2 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -219,7 +219,7 @@ void *module_alloc(unsigned long size)
* init_data correctly */
return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
GFP_KERNEL | __GFP_HIGHMEM,
- PAGE_KERNEL_RWX, NUMA_NO_NODE,
+ PAGE_KERNEL_RWX, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
diff --git a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c
index 568b2c61ea02..3cad8aadc69e 100644
--- a/arch/parisc/kernel/parisc_ksyms.c
+++ b/arch/parisc/kernel/parisc_ksyms.c
@@ -47,11 +47,11 @@ EXPORT_SYMBOL(__cmpxchg_u64);
EXPORT_SYMBOL(lclear_user);
EXPORT_SYMBOL(lstrnlen_user);
-/* Global fixups */
-extern void fixup_get_user_skip_1(void);
-extern void fixup_get_user_skip_2(void);
-extern void fixup_put_user_skip_1(void);
-extern void fixup_put_user_skip_2(void);
+/* Global fixups - defined as int to avoid creation of function pointers */
+extern int fixup_get_user_skip_1;
+extern int fixup_get_user_skip_2;
+extern int fixup_put_user_skip_1;
+extern int fixup_put_user_skip_2;
EXPORT_SYMBOL(fixup_get_user_skip_1);
EXPORT_SYMBOL(fixup_get_user_skip_2);
EXPORT_SYMBOL(fixup_put_user_skip_1);
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 9585c81f755f..ce0b2b4075c7 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -269,14 +269,19 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
long do_syscall_trace_enter(struct pt_regs *regs)
{
- long ret = 0;
-
/* Do the secure computing check first. */
secure_computing_strict(regs->gr[20]);
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
- tracehook_report_syscall_entry(regs))
- ret = -1L;
+ tracehook_report_syscall_entry(regs)) {
+ /*
+ * Tracing decided this syscall should not happen or the
+ * debugger stored an invalid system call number. Skip
+ * the system call and the system call restart handling.
+ */
+ regs->gr[20] = -1UL;
+ goto out;
+ }
#ifdef CONFIG_64BIT
if (!is_compat_task())
@@ -290,7 +295,8 @@ long do_syscall_trace_enter(struct pt_regs *regs)
regs->gr[24] & 0xffffffff,
regs->gr[23] & 0xffffffff);
- return ret ? : regs->gr[20];
+out:
+ return regs->gr[20];
}
void do_syscall_trace_exit(struct pt_regs *regs)
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 7ef22e3387e0..099c23616901 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -342,8 +342,8 @@ tracesys_next:
stw %r21, -56(%r30) /* 6th argument */
#endif
- comiclr,>>= __NR_Linux_syscalls, %r20, %r0
- b,n .Lsyscall_nosys
+ comiclr,>> __NR_Linux_syscalls, %r20, %r0
+ b,n .Ltracesys_nosys
LDREGX %r20(%r19), %r19
@@ -359,6 +359,9 @@ tracesys_next:
be 0(%sr7,%r19)
ldo R%tracesys_exit(%r2),%r2
+.Ltracesys_nosys:
+ ldo -ENOSYS(%r0),%r28 /* set errno */
+
/* Do *not* call this function on the gateway page, because it
makes a direct call to syscall_trace. */
@@ -821,7 +824,7 @@ cas2_action:
/* 64bit CAS */
#ifdef CONFIG_64BIT
19: ldd,ma 0(%sr3,%r26), %r29
- sub,= %r29, %r25, %r0
+ sub,*= %r29, %r25, %r0
b,n cas2_end
20: std,ma %r24, 0(%sr3,%r26)
copy %r0, %r28
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 47ee620d15d2..05aab1333dfa 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -802,6 +802,9 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
if (fault_space == 0 && !in_atomic())
{
+ /* Clean up and return if in exception table. */
+ if (fixup_exception(regs))
+ return;
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
parisc_terminate("Kernel Fault", regs, code, fault_address);
}
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index d7c0acb35ec2..8d49614d600d 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -666,7 +666,7 @@ void handle_unaligned(struct pt_regs *regs)
break;
}
- if (modify && R1(regs->iir))
+ if (ret == 0 && modify && R1(regs->iir))
regs->gr[R1(regs->iir)] = newbase;
@@ -677,6 +677,14 @@ void handle_unaligned(struct pt_regs *regs)
if (ret)
{
+ /*
+ * The unaligned handler failed.
+ * If we were called by __get_user() or __put_user() jump
+ * to it's exception fixup handler instead of crashing.
+ */
+ if (!user_mode(regs) && fixup_exception(regs))
+ return;
+
printk(KERN_CRIT "Unaligned handler failed, ret = %d\n", ret);
die_if_kernel("Unaligned data reference", regs, 28);
diff --git a/arch/parisc/lib/fixup.S b/arch/parisc/lib/fixup.S
index f8c45cc2947d..1052b747e011 100644
--- a/arch/parisc/lib/fixup.S
+++ b/arch/parisc/lib/fixup.S
@@ -26,6 +26,7 @@
#ifdef CONFIG_SMP
.macro get_fault_ip t1 t2
+ loadgp
addil LT%__per_cpu_offset,%r27
LDREG RT%__per_cpu_offset(%r1),\t1
/* t2 = smp_processor_id() */
@@ -38,16 +39,21 @@
LDREGX \t2(\t1),\t2
addil LT%exception_data,%r27
LDREG RT%exception_data(%r1),\t1
- /* t1 = &__get_cpu_var(exception_data) */
+ /* t1 = this_cpu_ptr(&exception_data) */
add,l \t1,\t2,\t1
+ /* %r27 = t1->fault_gp - restore gp */
+ LDREG EXCDATA_GP(\t1), %r27
/* t1 = t1->fault_ip */
LDREG EXCDATA_IP(\t1), \t1
.endm
#else
.macro get_fault_ip t1 t2
- /* t1 = &__get_cpu_var(exception_data) */
+ loadgp
+ /* t1 = this_cpu_ptr(&exception_data) */
addil LT%exception_data,%r27
LDREG RT%exception_data(%r1),\t2
+ /* %r27 = t2->fault_gp - restore gp */
+ LDREG EXCDATA_GP(\t2), %r27
/* t1 = t2->fault_ip */
LDREG EXCDATA_IP(\t2), \t1
.endm
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 065c957adbff..3ba51259167f 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -151,6 +151,7 @@ int fixup_exception(struct pt_regs *regs)
struct exception_data *d;
d = this_cpu_ptr(&exception_data);
d->fault_ip = regs->iaoq[0];
+ d->fault_gp = regs->gr[27];
d->fault_space = regs->isr;
d->fault_addr = regs->ior;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 15:18:46 +0000