X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fmips%2Fmm%2Ffault.c;h=7ebea331edb805802daf6aef5679691e3a22e96e;hb=e63340ae6b6205fef26b40a75673d1c9c0c8bb90;hp=2d9624fd10ecb4ad61cc33f55901f2109d6a4137;hpb=fe00f943e0ef98b4057abcc2940d631a975b43cd;p=safe%2Fjmp%2Flinux-2.6

diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 2d9624f..7ebea33 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -16,7 +16,6 @@
 #include <linux/mman.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
-#include <linux/smp_lock.h>
 #include <linux/vt_kern.h>		/* For unblank_screen() */
 #include <linux/module.h>
 
@@ -42,7 +41,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
 	siginfo_t info;
 
 #if 0
-	printk("Cpu%d[%s:%d:%0*lx:%ld:%0*lx]\n", smp_processor_id(),
+	printk("Cpu%d[%s:%d:%0*lx:%ld:%0*lx]\n", raw_smp_processor_id(),
 	       current->comm, current->pid, field, address, write,
 	       field, regs->cp0_epc);
 #endif
@@ -60,6 +59,10 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
 	 */
 	if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
 		goto vmalloc_fault;
+#ifdef MODULE_START
+	if (unlikely(address >= MODULE_START && address < MODULE_END))
+		goto vmalloc_fault;
+#endif
 
 	/*
 	 * If we're in an interrupt or have no user
@@ -89,7 +92,7 @@ good_area:
 		if (!(vma->vm_flags & VM_WRITE))
 			goto bad_area;
 	} else {
-		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+		if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
 			goto bad_area;
 	}
 
@@ -157,12 +160,11 @@ no_context:
 	 * Oops. The kernel tried to access some bad page. We'll have to
 	 * terminate things with extreme prejudice.
 	 */
-
 	bust_spinlocks(1);
 
 	printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
 	       "virtual address %0*lx, epc == %0*lx, ra == %0*lx\n",
-	       smp_processor_id(), field, address, field, regs->cp0_epc,
+	       raw_smp_processor_id(), field, address, field, regs->cp0_epc,
 	       field,  regs->regs[31]);
 	die("Oops", regs);
 
@@ -172,7 +174,7 @@ no_context:
  */
 out_of_memory:
 	up_read(&mm->mmap_sem);
-	if (tsk->pid == 1) {
+	if (is_init(tsk)) {
 		yield();
 		down_read(&mm->mmap_sem);
 		goto survive;
@@ -188,11 +190,20 @@ do_sigbus:
 	/* Kernel mode? Handle exceptions or die */
 	if (!user_mode(regs))
 		goto no_context;
-
+	else
 	/*
 	 * Send a sigbus, regardless of whether we were in kernel
 	 * or user mode.
 	 */
+#if 0
+		printk("do_page_fault() #3: sending SIGBUS to %s for "
+		       "invalid %s\n%0*lx (epc == %0*lx, ra == %0*lx)\n",
+		       tsk->comm,
+		       write ? "write access to" : "read access from",
+		       field, address,
+		       field, (unsigned long) regs->cp0_epc,
+		       field, (unsigned long) regs->regs[31]);
+#endif
 	tsk->thread.cp0_badvaddr = address;
 	info.si_signo = SIGBUS;
 	info.si_errno = 0;
@@ -201,7 +212,6 @@ do_sigbus:
 	force_sig_info(SIGBUS, &info, tsk);
 
 	return;
-
 vmalloc_fault:
 	{
 		/*
@@ -217,7 +227,7 @@ vmalloc_fault:
 		pmd_t *pmd, *pmd_k;
 		pte_t *pte_k;
 
-		pgd = (pgd_t *) pgd_current[smp_processor_id()] + offset;
+		pgd = (pgd_t *) pgd_current[raw_smp_processor_id()] + offset;
 		pgd_k = init_mm.pgd + offset;
 
 		if (!pgd_present(*pgd_k))