!40 crash：fix null pointer reference when CONFIG_KASAN is open

From: @wangbin224
Reviewed-by: @overweight
Signed-off-by: @overweight

add-SDEI-stack-resolution.patch

@@ -225,7 +225,7 @@ index fdf77bd..cc32d9d 100644
  			bt->flags &= ~BT_IRQSTACK;
  			if (arm64_switch_stack(bt, &stackframe, ofp) == USER_MODE)
  				break;
-@@ -2965,6 +3068,79 @@ arm64_in_kdump_text(struct bt_info *bt, struct arm64_stackframe *frame)
+@@ -2965,6 +3068,81 @@ arm64_in_kdump_text(struct bt_info *bt, struct arm64_stackframe *frame)
  }
  
  static int
@@ -241,6 +241,8 @@ index fdf77bd..cc32d9d 100644
 +		return FALSE;
 +
 +	ms = machdep->machspec;
++	if (!ms->sdei_stacks)
++		return FALSE;
 +	cpu = bt->tc->processor;
 +	stackbase = ms->sdei_stacks[cpu];
 +	stackbuf = GETBUF(ms->sdei_stack_size);

crash.spec

@@ -1,6 +1,6 @@
 Name: crash
 Version: 7.2.9
-Release: 4
+Release: 5
 Summary: Linux kernel crash utility.
 License: GPLv3
 URL: https://crash-utility.github.io
@@ -76,6 +76,9 @@ install -D -m 0644 defs.h %{buildroot}%{_includedir}/%{name}/defs.h
 %{_mandir}/man8/crash.8*
 
 %changelog
+* Fri Sep 03 2021 wangbin <wangbin224@huawei.com> - 7.2.9-5
+- fix null pointer reference when CONFIG_KASAN is open
+
 * Tue Jun 29 2021 zhouwenpei <zhouwenpei1@huawei.com> - 7.2.9-4
 - add buildrequires m4