X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fum%2Fkernel%2Ftrap.c;h=6a5a846b6e968128aa10c554606c04ae79df0699;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=8c90a63d9fea9c886c94b38c1a87f01bab72eb38;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index 8c90a63d9..6a5a846b6 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -119,7 +119,7 @@ out_nosemaphore:
  * us unable to handle the page fault gracefully.
  */
 out_of_memory:
-	if (current->pid == 1) {
+	if (is_init(current)) {
 		up_read(&mm->mmap_sem);
 		yield();
 		down_read(&mm->mmap_sem);
@@ -139,14 +139,6 @@ void segv_handler(int sig, union uml_pt_regs *regs)
 	segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs);
 }
 
-struct kern_handlers handlinfo_kern = {
-	.relay_signal = relay_signal,
-	.winch = winch,
-	.bus_handler = relay_signal,
-	.page_fault = segv_handler,
-	.sigio_handler = sigio_handler,
-	.timer_handler = timer_handler
-};
 /*
  * We give a *copy* of the faultinfo in the regs to segv.
  * This must be done, since nesting SEGVs could overwrite
@@ -201,7 +193,8 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
                 current->thread.arch.faultinfo = fi;
 		force_sig_info(SIGBUS, &si, current);
 	} else if (err == -ENOMEM) {
-		printk("VM: killing process %s\n", current->comm);
+		printk("VM: killing process %s(%d:#%u)\n",
+			current->comm, current->pid, current->xid);
 		do_exit(SIGKILL);
 	} else {
 		BUG_ON(err != -EFAULT);
@@ -226,9 +219,16 @@ void bad_segv(struct faultinfo fi, unsigned long ip)
 
 void relay_signal(int sig, union uml_pt_regs *regs)
 {
-	if(arch_handle_signal(sig, regs)) return;
-	if(!UPT_IS_USER(regs))
+	if(arch_handle_signal(sig, regs))
+		return;
+
+	if(!UPT_IS_USER(regs)){
+		if(sig == SIGBUS)
+			printk("Bus error - the /dev/shm or /tmp mount likely "
+			       "just ran out of space\n");
 		panic("Kernel mode signal %d", sig);
+	}
+
         current->thread.arch.faultinfo = *UPT_FAULTINFO(regs);
 	force_sig(sig, current);
 }
@@ -245,6 +245,15 @@ void winch(int sig, union uml_pt_regs *regs)
 	do_IRQ(WINCH_IRQ, regs);
 }
 
+const struct kern_handlers handlinfo_kern = {
+	.relay_signal = relay_signal,
+	.winch = winch,
+	.bus_handler = bus_handler,
+	.page_fault = segv_handler,
+	.sigio_handler = sigio_handler,
+	.timer_handler = timer_handler
+};
+
 void trap_init(void)
 {
 }