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Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/calls.S2
-rw-r--r--arch/arm/kernel/process.c63
-rw-r--r--arch/arm/kernel/sys_arm.c13
-rw-r--r--arch/arm/kernel/traps.c22
4 files changed, 55 insertions, 45 deletions
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index 19326d7cdeb..a98d0c933db 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -350,7 +350,7 @@
CALL(sys_set_robust_list)
CALL(sys_get_robust_list)
/* 340 */ CALL(sys_splice)
- CALL(sys_arm_sync_file_range)
+ CALL(sys_sync_file_range2)
CALL(sys_tee)
CALL(sys_vmsplice)
CALL(sys_move_pages)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 5d6e6523598..842361777d4 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -28,6 +28,7 @@
#include <linux/elfcore.h>
#include <linux/pm.h>
#include <linux/tick.h>
+#include <linux/utsname.h>
#include <asm/leds.h>
#include <asm/processor.h>
@@ -199,16 +200,19 @@ void machine_restart(char * __unused)
void __show_regs(struct pt_regs *regs)
{
- unsigned long flags = condition_codes(regs);
+ unsigned long flags;
+ char buf[64];
- printk("CPU: %d\n", smp_processor_id());
+ printk("CPU: %d %s (%s %.*s)\n",
+ smp_processor_id(), print_tainted(), init_utsname()->release,
+ (int)strcspn(init_utsname()->version, " "),
+ init_utsname()->version);
print_symbol("PC is at %s\n", instruction_pointer(regs));
print_symbol("LR is at %s\n", regs->ARM_lr);
- printk("pc : [<%08lx>] lr : [<%08lx>] %s\n"
+ printk("pc : [<%08lx>] lr : [<%08lx>] psr: %08lx\n"
"sp : %08lx ip : %08lx fp : %08lx\n",
- instruction_pointer(regs),
- regs->ARM_lr, print_tainted(), regs->ARM_sp,
- regs->ARM_ip, regs->ARM_fp);
+ regs->ARM_pc, regs->ARM_lr, regs->ARM_cpsr,
+ regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
printk("r10: %08lx r9 : %08lx r8 : %08lx\n",
regs->ARM_r10, regs->ARM_r9,
regs->ARM_r8);
@@ -218,36 +222,39 @@ void __show_regs(struct pt_regs *regs)
printk("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
regs->ARM_r3, regs->ARM_r2,
regs->ARM_r1, regs->ARM_r0);
- printk("Flags: %c%c%c%c",
- flags & PSR_N_BIT ? 'N' : 'n',
- flags & PSR_Z_BIT ? 'Z' : 'z',
- flags & PSR_C_BIT ? 'C' : 'c',
- flags & PSR_V_BIT ? 'V' : 'v');
- printk(" IRQs o%s FIQs o%s Mode %s%s Segment %s\n",
- interrupts_enabled(regs) ? "n" : "ff",
+
+ flags = regs->ARM_cpsr;
+ buf[0] = flags & PSR_N_BIT ? 'N' : 'n';
+ buf[1] = flags & PSR_Z_BIT ? 'Z' : 'z';
+ buf[2] = flags & PSR_C_BIT ? 'C' : 'c';
+ buf[3] = flags & PSR_V_BIT ? 'V' : 'v';
+ buf[4] = '\0';
+
+ printk("Flags: %s IRQs o%s FIQs o%s Mode %s%s Segment %s\n",
+ buf, interrupts_enabled(regs) ? "n" : "ff",
fast_interrupts_enabled(regs) ? "n" : "ff",
processor_modes[processor_mode(regs)],
thumb_mode(regs) ? " (T)" : "",
get_fs() == get_ds() ? "kernel" : "user");
-#if CONFIG_CPU_CP15
+#ifdef CONFIG_CPU_CP15
{
unsigned int ctrl;
- __asm__ (
- " mrc p15, 0, %0, c1, c0\n"
- : "=r" (ctrl));
- printk("Control: %04X\n", ctrl);
- }
+
+ buf[0] = '\0';
#ifdef CONFIG_CPU_CP15_MMU
- {
- unsigned int transbase, dac;
- __asm__ (
- " mrc p15, 0, %0, c2, c0\n"
- " mrc p15, 0, %1, c3, c0\n"
- : "=r" (transbase), "=r" (dac));
- printk("Table: %08X DAC: %08X\n",
- transbase, dac);
- }
+ {
+ unsigned int transbase, dac;
+ asm("mrc p15, 0, %0, c2, c0\n\t"
+ "mrc p15, 0, %1, c3, c0\n"
+ : "=r" (transbase), "=r" (dac));
+ snprintf(buf, sizeof(buf), " Table: %08x DAC: %08x",
+ transbase, dac);
+ }
#endif
+ asm("mrc p15, 0, %0, c1, c0\n" : "=r" (ctrl));
+
+ printk("Control: %08x%s\n", ctrl, buf);
+ }
#endif
}
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index 1ca2d5174fc..4d25e49a14f 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -328,16 +328,3 @@ asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
{
return sys_fadvise64_64(fd, offset, len, advice);
}
-
-/*
- * Yet more syscall fsckage - we can't fit sys_sync_file_range's
- * arguments into the available registers with EABI. So, let's
- * create an ARM specific syscall for this which has _sane_
- * arguments. (This incidentally also has an ABI-independent
- * argument layout.)
- */
-asmlinkage long sys_arm_sync_file_range(int fd, unsigned int flags,
- loff_t offset, loff_t nbytes)
-{
- return sys_sync_file_range(fd, offset, nbytes, flags);
-}
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 10ff36e4e41..237f4999b9a 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -181,9 +181,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
void dump_stack(void)
{
-#ifdef CONFIG_DEBUG_ERRORS
__backtrace();
-#endif
}
EXPORT_SYMBOL(dump_stack);
@@ -204,12 +202,24 @@ void show_stack(struct task_struct *tsk, unsigned long *sp)
barrier();
}
+#ifdef CONFIG_PREEMPT
+#define S_PREEMPT " PREEMPT"
+#else
+#define S_PREEMPT ""
+#endif
+#ifdef CONFIG_SMP
+#define S_SMP " SMP"
+#else
+#define S_SMP ""
+#endif
+
static void __die(const char *str, int err, struct thread_info *thread, struct pt_regs *regs)
{
struct task_struct *tsk = thread->task;
static int die_counter;
- printk("Internal error: %s: %x [#%d]\n", str, err, ++die_counter);
+ printk("Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
+ str, err, ++die_counter);
print_modules();
__show_regs(regs);
printk("Process %s (pid: %d, stack limit = 0x%p)\n",
@@ -232,6 +242,8 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
{
struct thread_info *thread = current_thread_info();
+ oops_enter();
+
console_verbose();
spin_lock_irq(&die_lock);
bust_spinlocks(1);
@@ -239,9 +251,13 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
bust_spinlocks(0);
spin_unlock_irq(&die_lock);
+ if (in_interrupt())
+ panic("Fatal exception in interrupt");
+
if (panic_on_oops)
panic("Fatal exception");
+ oops_exit();
do_exit(SIGSEGV);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-10 22:36:17 +0000