From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/arch/alpha/kernel/traps.c | 68 +++++++++++++++++-----------------
1 files changed, 34 insertions(+), 34 deletions(-)
diff --git a/kernel/arch/alpha/kernel/traps.c b/kernel/arch/alpha/kernel/traps.c
index bc96276..751d319 100644
--- a/kernel/arch/alpha/kernel/traps.c
+++ b/kernel/arch/alpha/kernel/traps.c
@@ -121,10 +121,10 @@
}
static void
-dik_show_trace(unsigned long *sp)
+dik_show_trace(unsigned long *sp, const char *loglvl)
{
long i = 0;
- printk("Trace:\n");
+ printk("%sTrace:\n", loglvl);
while (0x1ff8 & (unsigned long) sp) {
extern char _stext[], _etext[];
unsigned long tmp = *sp;
@@ -133,24 +133,24 @@
continue;
if (tmp >= (unsigned long) &_etext)
continue;
- printk("[<%lx>] %pSR\n", tmp, (void *)tmp);
+ printk("%s[<%lx>] %pSR\n", loglvl, tmp, (void *)tmp);
if (i > 40) {
- printk(" ...");
+ printk("%s ...", loglvl);
break;
}
}
- printk("\n");
+ printk("%s\n", loglvl);
}
static int kstack_depth_to_print = 24;
-void show_stack(struct task_struct *task, unsigned long *sp)
+void show_stack(struct task_struct *task, unsigned long *sp, const char *loglvl)
{
unsigned long *stack;
int i;
/*
- * debugging aid: "show_stack(NULL);" prints the
+ * debugging aid: "show_stack(NULL, NULL, KERN_EMERG);" prints the
* back trace for this cpu.
*/
if(sp==NULL)
@@ -163,14 +163,14 @@
if ((i % 4) == 0) {
if (i)
pr_cont("\n");
- printk(" ");
+ printk("%s ", loglvl);
} else {
pr_cont(" ");
}
pr_cont("%016lx", *stack++);
}
pr_cont("\n");
- dik_show_trace(sp);
+ dik_show_trace(sp, loglvl);
}
void
@@ -184,7 +184,7 @@
printk("%s(%d): %s %ld\n", current->comm, task_pid_nr(current), str, err);
dik_show_regs(regs, r9_15);
add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
- dik_show_trace((unsigned long *)(regs+1));
+ dik_show_trace((unsigned long *)(regs+1), KERN_DEFAULT);
dik_show_code((unsigned int *)regs->pc);
if (test_and_set_thread_flag (TIF_DIE_IF_KERNEL)) {
@@ -192,7 +192,7 @@
local_irq_enable();
while (1);
}
- do_exit(SIGSEGV);
+ make_task_dead(SIGSEGV);
}
#ifndef CONFIG_MATHEMU
@@ -235,7 +235,21 @@
{
int signo, code;
- if ((regs->ps & ~IPL_MAX) == 0) {
+ if (type == 3) { /* FEN fault */
+ /* Irritating users can call PAL_clrfen to disable the
+ FPU for the process. The kernel will then trap in
+ do_switch_stack and undo_switch_stack when we try
+ to save and restore the FP registers.
+
+ Given that GCC by default generates code that uses the
+ FP registers, PAL_clrfen is not useful except for DoS
+ attacks. So turn the bleeding FPU back on and be done
+ with it. */
+ current_thread_info()->pcb.flags |= 1;
+ __reload_thread(¤t_thread_info()->pcb);
+ return;
+ }
+ if (!user_mode(regs)) {
if (type == 1) {
const unsigned int *data
= (const unsigned int *) regs->pc;
@@ -368,20 +382,6 @@
}
break;
- case 3: /* FEN fault */
- /* Irritating users can call PAL_clrfen to disable the
- FPU for the process. The kernel will then trap in
- do_switch_stack and undo_switch_stack when we try
- to save and restore the FP registers.
-
- Given that GCC by default generates code that uses the
- FP registers, PAL_clrfen is not useful except for DoS
- attacks. So turn the bleeding FPU back on and be done
- with it. */
- current_thread_info()->pcb.flags |= 1;
- __reload_thread(¤t_thread_info()->pcb);
- return;
-
case 5: /* illoc */
default: /* unexpected instruction-fault type */
;
@@ -402,7 +402,7 @@
{
die_if_kernel("Instruction fault", regs, 0, NULL);
- force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, 0, current);
+ force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, 0);
}
@@ -577,7 +577,7 @@
printk("Bad unaligned kernel access at %016lx: %p %lx %lu\n",
pc, va, opcode, reg);
- do_exit(SIGSEGV);
+ make_task_dead(SIGSEGV);
got_exception:
/* Ok, we caught the exception, but we don't want it. Is there
@@ -625,14 +625,14 @@
printk("gp = %016lx sp = %p\n", regs->gp, regs+1);
dik_show_code((unsigned int *)pc);
- dik_show_trace((unsigned long *)(regs+1));
+ dik_show_trace((unsigned long *)(regs+1), KERN_DEFAULT);
if (test_and_set_thread_flag (TIF_DIE_IF_KERNEL)) {
printk("die_if_kernel recursion detected.\n");
local_irq_enable();
while (1);
}
- do_exit(SIGSEGV);
+ make_task_dead(SIGSEGV);
}
/*
@@ -883,7 +883,7 @@
case 0x26: /* sts */
fake_reg = s_reg_to_mem(alpha_read_fp_reg(reg));
- /* FALLTHRU */
+ fallthrough;
case 0x2c: /* stl */
__asm__ __volatile__(
@@ -911,7 +911,7 @@
case 0x27: /* stt */
fake_reg = alpha_read_fp_reg(reg);
- /* FALLTHRU */
+ fallthrough;
case 0x2d: /* stq */
__asm__ __volatile__(
@@ -957,12 +957,12 @@
si_code = SEGV_ACCERR;
else {
struct mm_struct *mm = current->mm;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
if (find_vma(mm, (unsigned long)va))
si_code = SEGV_ACCERR;
else
si_code = SEGV_MAPERR;
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
}
send_sig_fault(SIGSEGV, si_code, va, 0, current);
return;
--
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